{"transactions":[{"id":687811,"issuer":{"id":3906,"kind":"organization","name":"ONE Gas, Inc."},"owners":[{"id":23656,"kind":"person","name":"STAVROPOULOS NICKOLAS","position":1,"cik":"0001195025","reported_name":"STAVROPOULOS NICKOLAS","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Phantom Stock","published_at":"2026-08-13T20:15:17.000Z","date":"2026-08-11","kind":"grant","planned":false,"acquired":true,"shares":1502.7058,"price":79.6,"value":119615.38168,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Shares of phantom stock are convertible into ONE Gas' common stock on a 1-for-1 ratio."},{"field":"kind","element":"transactionCoding","label":"F2","text":"Annual stock retainer elected to be deferred to phantom stock under ONE Gas' Deferred Compensation Plan for Non-Employee Directors."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"Phantom stock is accrued under ONE Gas' Deferred Compensation Plan for Non-Employee Directors (the \"Plan\") and is settled in shares of ONE Gas common stock at the distribution date described in the Plan."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F3","text":"Phantom stock is accrued under ONE Gas' Deferred Compensation Plan for Non-Employee Directors (the \"Plan\") and is settled in shares of ONE Gas common stock at the distribution date described in the Plan."}],"balance_after":1502.7058,"derivative":{"underlying":"Common stock, par value $0.01","underlying_shares":1502.7058},"source":{"system":"sec-edgar","filing":"0001193125-26-349233","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1195025/000119312526349233/ownership.xml","form_type":"4"}},{"id":742714,"issuer":{"id":3906,"kind":"organization","name":"ONE Gas, Inc."},"owners":[{"id":39569,"kind":"person","name":"McCormick Joseph L","position":1,"cik":"0001595607","reported_name":"McCormick Joseph L","relationship":{"director":false,"officer":false,"ten_percent_owner":false,"other":true,"other_text":"See Remarks"}}],"security":"Restricted Units 2025","published_at":"2026-06-10T20:15:04.000Z","date":"2026-06-09","kind":"exercise","planned":false,"acquired":false,"shares":3132,"price":76,"value":238032.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"In conjunction with Mr. McCormick's retirement on December 9, 2025, distribution of restricted units awarded under Issuer's Amended and Restated Equity Compensation Plan (2018).  The award vested on a pro-rata basis six months following the date of retirement in accordance with the terms of the grant agreement. The award and credited dividend equivalents are payable one share of the Issuer's common stock for each vested restricted unit and dividend equivalent."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"In conjunction with Mr. McCormick's retirement on December 9, 2025, distribution of restricted units awarded under Issuer's Amended and Restated Equity Compensation Plan (2018).  The award vested on a pro-rata basis six months following the date of retirement in accordance with the terms of the grant agreement. The award and credited dividend equivalents are payable one share of the Issuer's common stock for each vested restricted unit and dividend equivalent."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"In conjunction with Mr. McCormick's retirement on December 9, 2025, distribution of restricted units awarded under Issuer's Amended and Restated Equity Compensation Plan (2018).  The award vested on a pro-rata basis six months following the date of retirement in accordance with the terms of the grant agreement. The award and credited dividend equivalents are payable one share of the Issuer's common stock for each vested restricted unit and dividend equivalent."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F1","text":"In conjunction with Mr. McCormick's retirement on December 9, 2025, distribution of restricted units awarded under Issuer's Amended and Restated Equity Compensation Plan (2018).  The award vested on a pro-rata basis six months following the date of retirement in accordance with the terms of the grant agreement. The award and credited dividend equivalents are payable one share of the Issuer's common stock for each vested restricted unit and dividend equivalent."}],"balance_after":0,"derivative":{"underlying":"Common stock, par value $0.01","underlying_shares":3132},"source":{"system":"sec-edgar","filing":"0001193125-26-265855","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":9,"url":"https://www.sec.gov/Archives/edgar/data/1587732/000119312526265855/ownership.xml","form_type":"4"}},{"id":742713,"issuer":{"id":3906,"kind":"organization","name":"ONE Gas, Inc."},"owners":[{"id":39569,"kind":"person","name":"McCormick Joseph L","position":1,"cik":"0001595607","reported_name":"McCormick Joseph L","relationship":{"director":false,"officer":false,"ten_percent_owner":false,"other":true,"other_text":"See Remarks"}}],"security":"Restricted Units 2024","published_at":"2026-06-10T20:15:04.000Z","date":"2026-06-09","kind":"exercise","planned":false,"acquired":false,"shares":1926,"price":76,"value":146376.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"In conjunction with Mr. McCormick's retirement on December 9, 2025, distribution of restricted units awarded under Issuer's Amended and Restated Equity Compensation Plan (2018).  The award vested on a pro-rata basis six months following the date of retirement in accordance with the terms of the grant agreement. The award and credited dividend equivalents are payable one share of the Issuer's common stock for each vested restricted unit and dividend equivalent."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"In conjunction with Mr. McCormick's retirement on December 9, 2025, distribution of restricted units awarded under Issuer's Amended and Restated Equity Compensation Plan (2018).  The award vested on a pro-rata basis six months following the date of retirement in accordance with the terms of the grant agreement. The award and credited dividend equivalents are payable one share of the Issuer's common stock for each vested restricted unit and dividend equivalent."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"In conjunction with Mr. McCormick's retirement on December 9, 2025, distribution of restricted units awarded under Issuer's Amended and Restated Equity Compensation Plan (2018).  The award vested on a pro-rata basis six months following the date of retirement in accordance with the terms of the grant agreement. The award and credited dividend equivalents are payable one share of the Issuer's common stock for each vested restricted unit and dividend equivalent."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F1","text":"In conjunction with Mr. McCormick's retirement on December 9, 2025, distribution of restricted units awarded under Issuer's Amended and Restated Equity Compensation Plan (2018).  The award vested on a pro-rata basis six months following the date of retirement in accordance with the terms of the grant agreement. The award and credited dividend equivalents are payable one share of the Issuer's common stock for each vested restricted unit and dividend equivalent."}],"balance_after":0,"derivative":{"underlying":"Common stock, par value $0.01","underlying_shares":1926},"source":{"system":"sec-edgar","filing":"0001193125-26-265855","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":8,"url":"https://www.sec.gov/Archives/edgar/data/1587732/000119312526265855/ownership.xml","form_type":"4"}},{"id":742712,"issuer":{"id":3906,"kind":"organization","name":"ONE Gas, Inc."},"owners":[{"id":39569,"kind":"person","name":"McCormick Joseph L","position":1,"cik":"0001595607","reported_name":"McCormick Joseph L","relationship":{"director":false,"officer":false,"ten_percent_owner":false,"other":true,"other_text":"See Remarks"}}],"security":"Restricted Units 2023","published_at":"2026-06-10T20:15:04.000Z","date":"2026-06-09","kind":"exercise","planned":false,"acquired":false,"shares":1223,"price":76,"value":92948.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"In conjunction with Mr. McCormick's retirement on December 9, 2025, distribution of restricted units awarded under Issuer's Amended and Restated Equity Compensation Plan (2018).  The award vested on a pro-rata basis six months following the date of retirement in accordance with the terms of the grant agreement. The award and credited dividend equivalents are payable one share of the Issuer's common stock for each vested restricted unit and dividend equivalent."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"In conjunction with Mr. McCormick's retirement on December 9, 2025, distribution of restricted units awarded under Issuer's Amended and Restated Equity Compensation Plan (2018).  The award vested on a pro-rata basis six months following the date of retirement in accordance with the terms of the grant agreement. The award and credited dividend equivalents are payable one share of the Issuer's common stock for each vested restricted unit and dividend equivalent."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"In conjunction with Mr. McCormick's retirement on December 9, 2025, distribution of restricted units awarded under Issuer's Amended and Restated Equity Compensation Plan (2018).  The award vested on a pro-rata basis six months following the date of retirement in accordance with the terms of the grant agreement. The award and credited dividend equivalents are payable one share of the Issuer's common stock for each vested restricted unit and dividend equivalent."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F1","text":"In conjunction with Mr. McCormick's retirement on December 9, 2025, distribution of restricted units awarded under Issuer's Amended and Restated Equity Compensation Plan (2018).  The award vested on a pro-rata basis six months following the date of retirement in accordance with the terms of the grant agreement. The award and credited dividend equivalents are payable one share of the Issuer's common stock for each vested restricted unit and dividend equivalent."}],"balance_after":0,"derivative":{"underlying":"Common stock, par value $0.01","underlying_shares":1223},"source":{"system":"sec-edgar","filing":"0001193125-26-265855","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":7,"url":"https://www.sec.gov/Archives/edgar/data/1587732/000119312526265855/ownership.xml","form_type":"4"}},{"id":742711,"issuer":{"id":3906,"kind":"organization","name":"ONE Gas, Inc."},"owners":[{"id":39569,"kind":"person","name":"McCormick Joseph L","position":1,"cik":"0001595607","reported_name":"McCormick Joseph L","relationship":{"director":false,"officer":false,"ten_percent_owner":false,"other":true,"other_text":"See Remarks"}}],"security":"Common stock, par value $0.01","published_at":"2026-06-10T20:15:04.000Z","date":"2026-06-09","kind":"tax_withholding","planned":false,"acquired":false,"shares":361.55,"price":76,"value":27477.8,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"In conjunction with Mr. McCormick's retirement on December 9, 2025, distribution of restricted units awarded under Issuer's Amended and Restated Equity Compensation Plan (2018).  The award vested on a pro-rata basis six months following the date of retirement in accordance with the terms of the grant agreement. The award and credited dividend equivalents are payable one share of the Issuer's common stock for each vested restricted unit and dividend equivalent."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"In conjunction with Mr. McCormick's retirement on December 9, 2025, distribution of restricted units awarded under Issuer's Amended and Restated Equity Compensation Plan (2018).  The award vested on a pro-rata basis six months following the date of retirement in accordance with the terms of the grant agreement. The award and credited dividend equivalents are payable one share of the Issuer's common stock for each vested restricted unit and dividend equivalent."}],"balance_after":76775.423,"source":{"system":"sec-edgar","filing":"0001193125-26-265855","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/1587732/000119312526265855/ownership.xml","form_type":"4"}},{"id":742710,"issuer":{"id":3906,"kind":"organization","name":"ONE Gas, Inc."},"owners":[{"id":39569,"kind":"person","name":"McCormick Joseph L","position":1,"cik":"0001595607","reported_name":"McCormick Joseph L","relationship":{"director":false,"officer":false,"ten_percent_owner":false,"other":true,"other_text":"See Remarks"}}],"security":"Common stock, par value $0.01","published_at":"2026-06-10T20:15:04.000Z","date":"2026-06-09","kind":"exercise","planned":false,"acquired":true,"shares":824.509,"price":76,"value":62662.684,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"In conjunction with Mr. McCormick's retirement on December 9, 2025, distribution of restricted units awarded under Issuer's Amended and Restated Equity Compensation Plan (2018).  The award vested on a pro-rata basis six months following the date of retirement in accordance with the terms of the grant agreement. The award and credited dividend equivalents are payable one share of the Issuer's common stock for each vested restricted unit and dividend equivalent."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"In conjunction with Mr. McCormick's retirement on December 9, 2025, distribution of restricted units awarded under Issuer's Amended and Restated Equity Compensation Plan (2018).  The award vested on a pro-rata basis six months following the date of retirement in accordance with the terms of the grant agreement. The award and credited dividend equivalents are payable one share of the Issuer's common stock for each vested restricted unit and dividend equivalent."}],"balance_after":77136.973,"source":{"system":"sec-edgar","filing":"0001193125-26-265855","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1587732/000119312526265855/ownership.xml","form_type":"4"}},{"id":742709,"issuer":{"id":3906,"kind":"organization","name":"ONE Gas, Inc."},"owners":[{"id":39569,"kind":"person","name":"McCormick Joseph L","position":1,"cik":"0001595607","reported_name":"McCormick Joseph L","relationship":{"director":false,"officer":false,"ten_percent_owner":false,"other":true,"other_text":"See Remarks"}}],"security":"Common stock, par value $0.01","published_at":"2026-06-10T20:15:04.000Z","date":"2026-06-09","kind":"tax_withholding","planned":false,"acquired":false,"shares":539.422,"price":76,"value":40996.072,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"In conjunction with Mr. McCormick's retirement on December 9, 2025, distribution of restricted units awarded under Issuer's Amended and Restated Equity Compensation Plan (2018).  The award vested on a pro-rata basis six months following the date of retirement in accordance with the terms of the grant agreement. The award and credited dividend equivalents are payable one share of the Issuer's common stock for each vested restricted unit and dividend equivalent."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"In conjunction with Mr. McCormick's retirement on December 9, 2025, distribution of restricted units awarded under Issuer's Amended and Restated Equity Compensation Plan (2018).  The award vested on a pro-rata basis six months following the date of retirement in accordance with the terms of the grant agreement. The award and credited dividend equivalents are payable one share of the Issuer's common stock for each vested restricted unit and dividend equivalent."}],"balance_after":76312.464,"source":{"system":"sec-edgar","filing":"0001193125-26-265855","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1587732/000119312526265855/ownership.xml","form_type":"4"}},{"id":742708,"issuer":{"id":3906,"kind":"organization","name":"ONE Gas, Inc."},"owners":[{"id":39569,"kind":"person","name":"McCormick Joseph L","position":1,"cik":"0001595607","reported_name":"McCormick Joseph L","relationship":{"director":false,"officer":false,"ten_percent_owner":false,"other":true,"other_text":"See Remarks"}}],"security":"Common stock, par value $0.01","published_at":"2026-06-10T20:15:04.000Z","date":"2026-06-09","kind":"exercise","planned":false,"acquired":true,"shares":1230.156,"price":76,"value":93491.856,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"In conjunction with Mr. McCormick's retirement on December 9, 2025, distribution of restricted units awarded under Issuer's Amended and Restated Equity Compensation Plan (2018).  The award vested on a pro-rata basis six months following the date of retirement in accordance with the terms of the grant agreement. The award and credited dividend equivalents are payable one share of the Issuer's common stock for each vested restricted unit and dividend equivalent."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"In conjunction with Mr. McCormick's retirement on December 9, 2025, distribution of restricted units awarded under Issuer's Amended and Restated Equity Compensation Plan (2018).  The award vested on a pro-rata basis six months following the date of retirement in accordance with the terms of the grant agreement. The award and credited dividend equivalents are payable one share of the Issuer's common stock for each vested restricted unit and dividend equivalent."}],"balance_after":76851.886,"source":{"system":"sec-edgar","filing":"0001193125-26-265855","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1587732/000119312526265855/ownership.xml","form_type":"4"}},{"id":742707,"issuer":{"id":3906,"kind":"organization","name":"ONE Gas, Inc."},"owners":[{"id":39569,"kind":"person","name":"McCormick Joseph L","position":1,"cik":"0001595607","reported_name":"McCormick Joseph L","relationship":{"director":false,"officer":false,"ten_percent_owner":false,"other":true,"other_text":"See Remarks"}}],"security":"Common stock, par value $0.01","published_at":"2026-06-10T20:15:04.000Z","date":"2026-06-09","kind":"tax_withholding","planned":false,"acquired":false,"shares":558.145,"price":76,"value":42419.02,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"In conjunction with Mr. McCormick's retirement on December 9, 2025, distribution of restricted units awarded under Issuer's Amended and Restated Equity Compensation Plan (2018).  The award vested on a pro-rata basis six months following the date of retirement in accordance with the terms of the grant agreement. The award and credited dividend equivalents are payable one share of the Issuer's common stock for each vested restricted unit and dividend equivalent."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"In conjunction with Mr. McCormick's retirement on December 9, 2025, distribution of restricted units awarded under Issuer's Amended and Restated Equity Compensation Plan (2018).  The award vested on a pro-rata basis six months following the date of retirement in accordance with the terms of the grant agreement. The award and credited dividend equivalents are payable one share of the Issuer's common stock for each vested restricted unit and dividend equivalent."}],"balance_after":75621.73,"source":{"system":"sec-edgar","filing":"0001193125-26-265855","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1587732/000119312526265855/ownership.xml","form_type":"4"}},{"id":742706,"issuer":{"id":3906,"kind":"organization","name":"ONE Gas, Inc."},"owners":[{"id":39569,"kind":"person","name":"McCormick Joseph L","position":1,"cik":"0001595607","reported_name":"McCormick Joseph L","relationship":{"director":false,"officer":false,"ten_percent_owner":false,"other":true,"other_text":"See Remarks"}}],"security":"Common stock, par value $0.01","published_at":"2026-06-10T20:15:04.000Z","date":"2026-06-09","kind":"exercise","planned":false,"acquired":true,"shares":1272.855,"price":76,"value":96736.98,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"In conjunction with Mr. McCormick's retirement on December 9, 2025, distribution of restricted units awarded under Issuer's Amended and Restated Equity Compensation Plan (2018).  The award vested on a pro-rata basis six months following the date of retirement in accordance with the terms of the grant agreement. The award and credited dividend equivalents are payable one share of the Issuer's common stock for each vested restricted unit and dividend equivalent."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"In conjunction with Mr. McCormick's retirement on December 9, 2025, distribution of restricted units awarded under Issuer's Amended and Restated Equity Compensation Plan (2018).  The award vested on a pro-rata basis six months following the date of retirement in accordance with the terms of the grant agreement. The award and credited dividend equivalents are payable one share of the Issuer's common stock for each vested restricted unit and dividend equivalent."}],"balance_after":76179.875,"source":{"system":"sec-edgar","filing":"0001193125-26-265855","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1587732/000119312526265855/ownership.xml","form_type":"4"}},{"id":749401,"issuer":{"id":3906,"kind":"organization","name":"ONE Gas, Inc."},"owners":[{"id":41287,"kind":"person","name":"GIBSON JOHN WILLIAM","position":1,"cik":"0001239209","reported_name":"GIBSON JOHN WILLIAM","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Phantom Stock","published_at":"2026-06-04T20:15:04.000Z","date":"2026-06-03","kind":"exercise","planned":false,"acquired":false,"shares":19976,"price":77.74,"value":1552934.24,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Represents settlement of deferred stock units credited under the ONE Gas Deferred Compensation Plan for Non-Employee Directors (the \"Plan\"), payable in shares of common stock and convertible on a 1-for-1 ratio pursuant to the ONE Gas, Inc. Amended and Restated Equity Compensation Plan (2018) following the reporting person's retirement on May 21, 2026. 19,976 phantom stock units, including dividend-equivalent units credited through the June 2, 2026 dividend payment date, were settled in shares of common stock on June 3, 2026."},{"field":"shares","element":"transactionShares","label":"F1","text":"Represents settlement of deferred stock units credited under the ONE Gas Deferred Compensation Plan for Non-Employee Directors (the \"Plan\"), payable in shares of common stock and convertible on a 1-for-1 ratio pursuant to the ONE Gas, Inc. Amended and Restated Equity Compensation Plan (2018) following the reporting person's retirement on May 21, 2026. 19,976 phantom stock units, including dividend-equivalent units credited through the June 2, 2026 dividend payment date, were settled in shares of common stock on June 3, 2026."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Represents settlement of deferred stock units credited under the ONE Gas Deferred Compensation Plan for Non-Employee Directors (the \"Plan\"), payable in shares of common stock and convertible on a 1-for-1 ratio pursuant to the ONE Gas, Inc. Amended and Restated Equity Compensation Plan (2018) following the reporting person's retirement on May 21, 2026. 19,976 phantom stock units, including dividend-equivalent units credited through the June 2, 2026 dividend payment date, were settled in shares of common stock on June 3, 2026."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"Represents settlement of deferred stock units credited under the ONE Gas Deferred Compensation Plan for Non-Employee Directors (the \"Plan\"), payable in shares of common stock and convertible on a 1-for-1 ratio pursuant to the ONE Gas, Inc. Amended and Restated Equity Compensation Plan (2018) following the reporting person's retirement on May 21, 2026. 19,976 phantom stock units, including dividend-equivalent units credited through the June 2, 2026 dividend payment date, were settled in shares of common stock on June 3, 2026."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F1","text":"Represents settlement of deferred stock units credited under the ONE Gas Deferred Compensation Plan for Non-Employee Directors (the \"Plan\"), payable in shares of common stock and convertible on a 1-for-1 ratio pursuant to the ONE Gas, Inc. Amended and Restated Equity Compensation Plan (2018) following the reporting person's retirement on May 21, 2026. 19,976 phantom stock units, including dividend-equivalent units credited through the June 2, 2026 dividend payment date, were settled in shares of common stock on June 3, 2026."},{"field":"derivative.underlying_shares","element":"underlyingSecurityShares","label":"F1","text":"Represents settlement of deferred stock units credited under the ONE Gas Deferred Compensation Plan for Non-Employee Directors (the \"Plan\"), payable in shares of common stock and convertible on a 1-for-1 ratio pursuant to the ONE Gas, Inc. Amended and Restated Equity Compensation Plan (2018) following the reporting person's retirement on May 21, 2026. 19,976 phantom stock units, including dividend-equivalent units credited through the June 2, 2026 dividend payment date, were settled in shares of common stock on June 3, 2026."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"The reporting person continues to hold phantom stock units subject to prior deferred distribution elections, which remain payable in future installments pursuant to the Plan."}],"balance_after":6010,"derivative":{"underlying":"Common stock, par value $0.01","underlying_shares":19976},"source":{"system":"sec-edgar","filing":"0001193125-26-257425","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1239209/000119312526257425/ownership.xml","form_type":"4"}},{"id":749400,"issuer":{"id":3906,"kind":"organization","name":"ONE Gas, Inc."},"owners":[{"id":41287,"kind":"person","name":"GIBSON JOHN WILLIAM","position":1,"cik":"0001239209","reported_name":"GIBSON JOHN WILLIAM","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common stock, par value $0.01","published_at":"2026-06-04T20:15:04.000Z","date":"2026-06-03","kind":"exercise","planned":false,"acquired":true,"shares":19976,"price":77.47,"value":1547540.72,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents settlement of deferred stock units credited under the ONE Gas Deferred Compensation Plan for Non-Employee Directors (the \"Plan\"), payable in shares of common stock and convertible on a 1-for-1 ratio pursuant to the ONE Gas, Inc. Amended and Restated Equity Compensation Plan (2018) following the reporting person's retirement on May 21, 2026. 19,976 phantom stock units, including dividend-equivalent units credited through the June 2, 2026 dividend payment date, were settled in shares of common stock on June 3, 2026."}],"balance_after":292670,"source":{"system":"sec-edgar","filing":"0001193125-26-257425","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1239209/000119312526257425/ownership.xml","form_type":"4"}},{"id":749384,"issuer":{"id":3906,"kind":"organization","name":"ONE Gas, Inc."},"owners":[{"id":41283,"kind":"person","name":"MOORE PATTYE L","position":1,"cik":"0001185026","reported_name":"MOORE PATTYE L","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Phantom Stock","published_at":"2026-06-04T20:15:03.000Z","date":"2026-06-03","kind":"exercise","planned":false,"acquired":false,"shares":5638,"price":77.74,"value":438298.12,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Pursuant to the ONEOK distribution the reporting person received one share of ONE Gas common stock for every four shares of ONEOK common stock on January 21, 2014. Represents settlement of deferred stock units credited under the ONE Gas Deferred Compensation Plan for Non-Employee Directors (the \"Plan\"), payable in shares of common stock and convertible on a 1-for-1 ratio pursuant to the ONE Gas, Inc. Amended and Restated Equity Compensation Plan (2018) following the reporting person's retirement from ONEOK, Inc. on May 20, 2026. 5,638 phantom stock units, including dividend-equivalent units credited through the June 2, 2026, dividend payment date, were settled in shares of common stock on June 3, 2026."},{"field":"shares","element":"transactionShares","label":"F1","text":"Pursuant to the ONEOK distribution the reporting person received one share of ONE Gas common stock for every four shares of ONEOK common stock on January 21, 2014. Represents settlement of deferred stock units credited under the ONE Gas Deferred Compensation Plan for Non-Employee Directors (the \"Plan\"), payable in shares of common stock and convertible on a 1-for-1 ratio pursuant to the ONE Gas, Inc. Amended and Restated Equity Compensation Plan (2018) following the reporting person's retirement from ONEOK, Inc. on May 20, 2026. 5,638 phantom stock units, including dividend-equivalent units credited through the June 2, 2026, dividend payment date, were settled in shares of common stock on June 3, 2026."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Pursuant to the ONEOK distribution the reporting person received one share of ONE Gas common stock for every four shares of ONEOK common stock on January 21, 2014. Represents settlement of deferred stock units credited under the ONE Gas Deferred Compensation Plan for Non-Employee Directors (the \"Plan\"), payable in shares of common stock and convertible on a 1-for-1 ratio pursuant to the ONE Gas, Inc. Amended and Restated Equity Compensation Plan (2018) following the reporting person's retirement from ONEOK, Inc. on May 20, 2026. 5,638 phantom stock units, including dividend-equivalent units credited through the June 2, 2026, dividend payment date, were settled in shares of common stock on June 3, 2026."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"Pursuant to the ONEOK distribution the reporting person received one share of ONE Gas common stock for every four shares of ONEOK common stock on January 21, 2014. Represents settlement of deferred stock units credited under the ONE Gas Deferred Compensation Plan for Non-Employee Directors (the \"Plan\"), payable in shares of common stock and convertible on a 1-for-1 ratio pursuant to the ONE Gas, Inc. Amended and Restated Equity Compensation Plan (2018) following the reporting person's retirement from ONEOK, Inc. on May 20, 2026. 5,638 phantom stock units, including dividend-equivalent units credited through the June 2, 2026, dividend payment date, were settled in shares of common stock on June 3, 2026."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F1","text":"Pursuant to the ONEOK distribution the reporting person received one share of ONE Gas common stock for every four shares of ONEOK common stock on January 21, 2014. Represents settlement of deferred stock units credited under the ONE Gas Deferred Compensation Plan for Non-Employee Directors (the \"Plan\"), payable in shares of common stock and convertible on a 1-for-1 ratio pursuant to the ONE Gas, Inc. Amended and Restated Equity Compensation Plan (2018) following the reporting person's retirement from ONEOK, Inc. on May 20, 2026. 5,638 phantom stock units, including dividend-equivalent units credited through the June 2, 2026, dividend payment date, were settled in shares of common stock on June 3, 2026."},{"field":"derivative.underlying_shares","element":"underlyingSecurityShares","label":"F1","text":"Pursuant to the ONEOK distribution the reporting person received one share of ONE Gas common stock for every four shares of ONEOK common stock on January 21, 2014. Represents settlement of deferred stock units credited under the ONE Gas Deferred Compensation Plan for Non-Employee Directors (the \"Plan\"), payable in shares of common stock and convertible on a 1-for-1 ratio pursuant to the ONE Gas, Inc. Amended and Restated Equity Compensation Plan (2018) following the reporting person's retirement from ONEOK, Inc. on May 20, 2026. 5,638 phantom stock units, including dividend-equivalent units credited through the June 2, 2026, dividend payment date, were settled in shares of common stock on June 3, 2026."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"The reporting person continues to hold phantom stock units subject to prior deferred distribution elections, which remain payable pursuant to the Plan."}],"balance_after":50714,"derivative":{"underlying":"Common stock, par value $0.01","underlying_shares":5638},"source":{"system":"sec-edgar","filing":"0001193125-26-257421","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1185026/000119312526257421/ownership.xml","form_type":"4"}},{"id":749383,"issuer":{"id":3906,"kind":"organization","name":"ONE Gas, Inc."},"owners":[{"id":41283,"kind":"person","name":"MOORE PATTYE L","position":1,"cik":"0001185026","reported_name":"MOORE PATTYE L","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common stock, par value $0.01","published_at":"2026-06-04T20:15:03.000Z","date":"2026-06-03","kind":"exercise","planned":false,"acquired":true,"shares":5638,"price":77.47,"value":436775.86,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Pursuant to the ONEOK distribution the reporting person received one share of ONE Gas common stock for every four shares of ONEOK common stock on January 21, 2014. Represents settlement of deferred stock units credited under the ONE Gas Deferred Compensation Plan for Non-Employee Directors (the \"Plan\"), payable in shares of common stock and convertible on a 1-for-1 ratio pursuant to the ONE Gas, Inc. Amended and Restated Equity Compensation Plan (2018) following the reporting person's retirement from ONEOK, Inc. on May 20, 2026. 5,638 phantom stock units, including dividend-equivalent units credited through the June 2, 2026, dividend payment date, were settled in shares of common stock on June 3, 2026."}],"balance_after":6088,"source":{"system":"sec-edgar","filing":"0001193125-26-257421","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1185026/000119312526257421/ownership.xml","form_type":"4"}},{"id":764119,"issuer":{"id":3906,"kind":"organization","name":"ONE Gas, Inc."},"owners":[{"id":44296,"kind":"person","name":"Meshri Sanjay D.","position":1,"cik":"0002030411","reported_name":"Meshri Sanjay D.","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common stock, par value $0.01","published_at":"2026-05-26T20:15:15.000Z","date":"2026-05-21","kind":"grant","planned":false,"acquired":true,"shares":1700,"price":82.35,"value":139995.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Annual stock retainer shares are issued under the Issuer's Amended and Restated Equity Compensation Plan (2018)."}],"balance_after":5293,"source":{"system":"sec-edgar","filing":"0001193125-26-239330","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/2030411/000119312526239330/ownership.xml","form_type":"4"}},{"id":763454,"issuer":{"id":3906,"kind":"organization","name":"ONE Gas, Inc."},"owners":[{"id":41283,"kind":"person","name":"MOORE PATTYE L","position":1,"cik":"0001185026","reported_name":"MOORE PATTYE L","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Deferred Stock","published_at":"2026-05-26T20:15:10.000Z","date":"2026-05-21","kind":"grant","planned":false,"acquired":true,"shares":1700,"price":82.35,"value":139995.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Shares of deferred stock are convertible into ONE Gas' common stock on a 1-for-1 ratio."},{"field":"kind","element":"transactionCoding","label":"F2","text":"Annual cash and/or stock retainer elected to be deferred under ONE Gas' Deferred Compensation Plan for Non-Employee Directors."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"Deferred stock is accrued under ONE Gas' Deferred Compensation Plan for Non-Employee Directors (the \"Plan\") and is settled in shares of ONE Gas common stock at the distribution date described in the Plan."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F3","text":"Deferred stock is accrued under ONE Gas' Deferred Compensation Plan for Non-Employee Directors (the \"Plan\") and is settled in shares of ONE Gas common stock at the distribution date described in the Plan."}],"balance_after":55877,"derivative":{"underlying":"Common stock, par value $0.01","underlying_shares":1700},"source":{"system":"sec-edgar","filing":"0001193125-26-239327","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1185026/000119312526239327/ownership.xml","form_type":"4"}},{"id":763881,"issuer":{"id":3906,"kind":"organization","name":"ONE Gas, Inc."},"owners":[{"id":40956,"kind":"person","name":"Hersman Deborah","position":1,"cik":"0001778660","reported_name":"Hersman Deborah","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Deferred Stock","published_at":"2026-05-26T20:15:09.000Z","date":"2026-05-21","kind":"grant","planned":false,"acquired":true,"shares":1700,"price":82.35,"value":139995.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Shares of deferred stock are convertible into ONE Gas' common stock on a 1-for-1 ratio."},{"field":"kind","element":"transactionCoding","label":"F2","text":"Annual stock retainer elected to be deferred under ONE Gas' Deferred Compensation Plan for Non-Employee Directors."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"Deferred stock is accrued under ONE Gas' Deferred Compensation Plan for Non-Employee Directors (the \"Plan\") and is settled in shares of ONE Gas common stock at the distribution date described in the Plan."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F3","text":"Deferred stock is accrued under ONE Gas' Deferred Compensation Plan for Non-Employee Directors (the \"Plan\") and is settled in shares of ONE Gas common stock at the distribution date described in the Plan."}],"balance_after":7533,"derivative":{"underlying":"Common stock, par value $0.01","underlying_shares":1700},"source":{"system":"sec-edgar","filing":"0001193125-26-239326","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1778660/000119312526239326/ownership.xml","form_type":"4"}},{"id":763517,"issuer":{"id":3906,"kind":"organization","name":"ONE Gas, Inc."},"owners":[{"id":44171,"kind":"person","name":"RODRIGUEZ EDUARDO A","position":1,"cik":"0001286450","reported_name":"RODRIGUEZ EDUARDO A","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Deferred Stock","published_at":"2026-05-26T20:15:07.000Z","date":"2026-05-21","kind":"grant","planned":false,"acquired":true,"shares":425,"price":82.35,"value":34998.75,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"Shares of deferred stock are convertible into ONE Gas' common stock on a 1-for-1 ratio."},{"field":"kind","element":"transactionCoding","label":"F3","text":"Annual cash and/or stock retainer elected to be deferred under ONE Gas' Deferred Compensation Plan for Non-Employee Directors."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F4","text":"Deferred stock is accrued under ONE Gas' Deferred Compensation Plan for Non-Employee Directors (the \"Plan\") and is settled in shares of ONE Gas common stock at the distribution date described in the Plan."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F4","text":"Deferred stock is accrued under ONE Gas' Deferred Compensation Plan for Non-Employee Directors (the \"Plan\") and is settled in shares of ONE Gas common stock at the distribution date described in the Plan."}],"balance_after":5276,"derivative":{"underlying":"Common stock, par value $0.01","underlying_shares":425},"source":{"system":"sec-edgar","filing":"0001193125-26-239324","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1286450/000119312526239324/ownership.xml","form_type":"4"}},{"id":763516,"issuer":{"id":3906,"kind":"organization","name":"ONE Gas, Inc."},"owners":[{"id":44171,"kind":"person","name":"RODRIGUEZ EDUARDO A","position":1,"cik":"0001286450","reported_name":"RODRIGUEZ EDUARDO A","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common stock, par value $0.01","published_at":"2026-05-26T20:15:07.000Z","date":"2026-05-21","kind":"grant","planned":false,"acquired":true,"shares":1275,"price":82.35,"value":104996.25,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Annual stock retainer shares are issued under ONE Gas' Amended and Restated Equity Compensation Plan (2018)."}],"balance_after":14637,"source":{"system":"sec-edgar","filing":"0001193125-26-239324","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1286450/000119312526239324/ownership.xml","form_type":"4"}},{"id":763277,"issuer":{"id":3906,"kind":"organization","name":"ONE Gas, Inc."},"owners":[{"id":44120,"kind":"person","name":"Hutchinson Michael G","position":1,"cik":"0001555428","reported_name":"Hutchinson Michael G","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common stock, par value $0.01","published_at":"2026-05-26T20:15:06.000Z","date":"2026-05-21","kind":"grant","planned":false,"acquired":true,"shares":1700,"price":82.35,"value":139995.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Annual stock retainer shares are issued under the Issuer's Equity Compensation Plan."}],"balance_after":16331,"source":{"system":"sec-edgar","filing":"0001193125-26-239325","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1555428/000119312526239325/ownership.xml","form_type":"4"}},{"id":763250,"issuer":{"id":3906,"kind":"organization","name":"ONE Gas, Inc."},"owners":[{"id":44116,"kind":"person","name":"Siegel Yves C","position":1,"cik":"0001572715","reported_name":"Siegel Yves C","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Deferred Stock","published_at":"2026-05-26T20:15:04.000Z","date":"2026-05-21","kind":"grant","planned":false,"acquired":true,"shares":1700,"price":82.35,"value":139995.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Shares of deferred stock are convertible into ONE Gas' common stock on a 1-for-1 ratio."},{"field":"kind","element":"transactionCoding","label":"F2","text":"Annual stock retainer elected to be deferred under ONE Gas' Deferred Compensation Plan for Non-Employee Directors."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"Deferred stock is accrued under ONE Gas' Deferred Compensation Plan for Non-Employee Directors (the \"Plan\") and is settled in shares of ONE Gas common stock at the distribution date described in the Plan."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F3","text":"Deferred stock is accrued under ONE Gas' Deferred Compensation Plan for Non-Employee Directors (the \"Plan\") and is settled in shares of ONE Gas common stock at the distribution date described in the Plan."}],"balance_after":5447,"derivative":{"underlying":"Common stock, par value $0.01","underlying_shares":1700},"source":{"system":"sec-edgar","filing":"0001193125-26-239323","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1572715/000119312526239323/ownership.xml","form_type":"4"}},{"id":763875,"issuer":{"id":3906,"kind":"organization","name":"ONE Gas, Inc."},"owners":[{"id":44243,"kind":"person","name":"Hart Tracy E","position":1,"cik":"0001747990","reported_name":"Hart Tracy E","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common stock, par value $0.01","published_at":"2026-05-26T20:15:03.000Z","date":"2026-05-21","kind":"grant","planned":false,"acquired":true,"shares":1700,"price":82.35,"value":139995.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Annual stock retainer shares are issued under the Issuer's Amended and Restated Equity Compensation Plan (2018)."}],"balance_after":11302,"source":{"system":"sec-edgar","filing":"0001193125-26-239322","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1747990/000119312526239322/ownership.xml","form_type":"4"}},{"id":850752,"issuer":{"id":3906,"kind":"organization","name":"ONE Gas, Inc."},"owners":[{"id":44171,"kind":"person","name":"RODRIGUEZ EDUARDO A","position":1,"cik":"0001286450","reported_name":"RODRIGUEZ EDUARDO A","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common stock, par value $0.01","published_at":"2026-03-10T20:15:03.000Z","date":"2026-03-06","kind":"sale","planned":false,"acquired":false,"shares":850,"price":86.3401,"value":73389.085,"ownership":{"direct":true},"balance_after":13362,"source":{"system":"sec-edgar","filing":"0001193125-26-100161","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1286450/000119312526100161/ownership.xml","form_type":"4"}},{"id":881402,"issuer":{"id":3906,"kind":"organization","name":"ONE Gas, Inc."},"owners":[{"id":64683,"kind":"person","name":"Brumfield Brian F.","position":1,"cik":"0001951536","reported_name":"Brumfield Brian F.","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"See Remarks"}}],"security":"Common stock, par value $0.01","published_at":"2026-02-25T22:12:12.000Z","date":"2026-02-24","kind":"sale","planned":false,"acquired":false,"shares":1000,"price":86.44,"value":86440.0,"ownership":{"direct":true},"balance_after":2246.212,"source":{"system":"sec-edgar","filing":"0001193125-26-072079","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1587732/000119312526072079/ownership.xml","form_type":"4"}},{"id":892685,"issuer":{"id":3906,"kind":"organization","name":"ONE Gas, Inc."},"owners":[{"id":65620,"kind":"person","name":"Shortridge William Kent","position":1,"cik":"0001916652","reported_name":"Shortridge William Kent","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"See Remarks"}}],"security":"Restricted Units 2026","published_at":"2026-02-19T21:15:30.000Z","date":"2026-02-16","kind":"grant","planned":false,"acquired":true,"shares":1395,"price":86.04,"value":120025.8,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F4","text":"Restricted units awarded under the Issuer's Amended and Restated Equity Compensation Plan (2018). The award vests on February 17, 2029, in accordance with the terms of the Restricted Unit Award Agreement."},{"field":"price","element":"transactionPricePerShare","label":"F4","text":"Restricted units awarded under the Issuer's Amended and Restated Equity Compensation Plan (2018). The award vests on February 17, 2029, in accordance with the terms of the Restricted Unit Award Agreement."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F4","text":"Restricted units awarded under the Issuer's Amended and Restated Equity Compensation Plan (2018). The award vests on February 17, 2029, in accordance with the terms of the Restricted Unit Award Agreement."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F4","text":"Restricted units awarded under the Issuer's Amended and Restated Equity Compensation Plan (2018). The award vests on February 17, 2029, in accordance with the terms of the Restricted Unit Award Agreement."}],"balance_after":1395,"derivative":{"underlying":"Common stock, par value $0.01","underlying_shares":1395},"source":{"system":"sec-edgar","filing":"0001193125-26-059432","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":9,"url":"https://www.sec.gov/Archives/edgar/data/1587732/000119312526059432/ownership.xml","form_type":"4"}},{"id":892684,"issuer":{"id":3906,"kind":"organization","name":"ONE Gas, Inc."},"owners":[{"id":65620,"kind":"person","name":"Shortridge William Kent","position":1,"cik":"0001916652","reported_name":"Shortridge William Kent","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"See Remarks"}}],"security":"Performance Units 2026","published_at":"2026-02-19T21:15:30.000Z","date":"2026-02-16","kind":"grant","planned":false,"acquired":true,"shares":2092,"price":86.04,"value":179995.68,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F3","text":"Performance units awarded under the Issuer's Amended and Restated Equity Compensation Plan (2018). The award will vest on February 17, 2029, for a percentage (0% to 200%) of the performance units awarded based upon the Issuer's total shareholder return compared to total stockholder return of a selected peer group over the performance period from January 1, 2026, through December 31, 2029, in accordance with the terms of the Performance Unit Award Agreement."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"Performance units awarded under the Issuer's Amended and Restated Equity Compensation Plan (2018). The award will vest on February 17, 2029, for a percentage (0% to 200%) of the performance units awarded based upon the Issuer's total shareholder return compared to total stockholder return of a selected peer group over the performance period from January 1, 2026, through December 31, 2029, in accordance with the terms of the Performance Unit Award Agreement."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"Performance units awarded under the Issuer's Amended and Restated Equity Compensation Plan (2018). The award will vest on February 17, 2029, for a percentage (0% to 200%) of the performance units awarded based upon the Issuer's total shareholder return compared to total stockholder return of a selected peer group over the performance period from January 1, 2026, through December 31, 2029, in accordance with the terms of the Performance Unit Award Agreement."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F3","text":"Performance units awarded under the Issuer's Amended and Restated Equity Compensation Plan (2018). The award will vest on February 17, 2029, for a percentage (0% to 200%) of the performance units awarded based upon the Issuer's total shareholder return compared to total stockholder return of a selected peer group over the performance period from January 1, 2026, through December 31, 2029, in accordance with the terms of the Performance Unit Award Agreement."}],"balance_after":2092,"derivative":{"underlying":"Common stock, par value $0.01","underlying_shares":2092},"source":{"system":"sec-edgar","filing":"0001193125-26-059432","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":8,"url":"https://www.sec.gov/Archives/edgar/data/1587732/000119312526059432/ownership.xml","form_type":"4"}},{"id":892683,"issuer":{"id":3906,"kind":"organization","name":"ONE Gas, Inc."},"owners":[{"id":65620,"kind":"person","name":"Shortridge William Kent","position":1,"cik":"0001916652","reported_name":"Shortridge William Kent","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"See Remarks"}}],"security":"Restricted Units 2023","published_at":"2026-02-19T21:15:30.000Z","date":"2026-02-14","kind":"exercise","planned":false,"acquired":false,"shares":489,"price":86.04,"value":42073.56,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"Restricted units awarded under Issuer's Amended and Restated Equity Compensation Plan (2018). During the 3-year vesting period, the award was credited with dividend equivalents that were paid out in shares of common stock at the time the underlying units vested and were issued. The shares were issued pursuant to the terms of the grant agreement."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"Restricted units awarded under Issuer's Amended and Restated Equity Compensation Plan (2018). During the 3-year vesting period, the award was credited with dividend equivalents that were paid out in shares of common stock at the time the underlying units vested and were issued. The shares were issued pursuant to the terms of the grant agreement."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"Restricted units awarded under Issuer's Amended and Restated Equity Compensation Plan (2018). During the 3-year vesting period, the award was credited with dividend equivalents that were paid out in shares of common stock at the time the underlying units vested and were issued. The shares were issued pursuant to the terms of the grant agreement."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"Restricted units awarded under Issuer's Amended and Restated Equity Compensation Plan (2018). During the 3-year vesting period, the award was credited with dividend equivalents that were paid out in shares of common stock at the time the underlying units vested and were issued. The shares were issued pursuant to the terms of the grant agreement."}],"balance_after":0,"derivative":{"underlying":"Common stock, par value $0.01","underlying_shares":489},"source":{"system":"sec-edgar","filing":"0001193125-26-059432","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":7,"url":"https://www.sec.gov/Archives/edgar/data/1587732/000119312526059432/ownership.xml","form_type":"4"}},{"id":892682,"issuer":{"id":3906,"kind":"organization","name":"ONE Gas, Inc."},"owners":[{"id":65620,"kind":"person","name":"Shortridge William Kent","position":1,"cik":"0001916652","reported_name":"Shortridge William Kent","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"See Remarks"}}],"security":"Performance Units 2023","published_at":"2026-02-19T21:15:30.000Z","date":"2026-02-16","kind":"exercise","planned":false,"acquired":false,"shares":1956,"price":86.04,"value":168294.24,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Performance units awarded under the Issuer's Amended and Restated Equity Compensation Plan (2018). The award, including dividend equivalents, vested on February 14, 2026, in an amount equal to 76% of the performance units awarded based upon Issuer's total shareholder return compared to the total shareholder return of a selected peer group, was certified by the Executive Compensation Committee of the Board of Directors on February 16, 2026, and issued pursuant to the terms of the grant agreement."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Performance units awarded under the Issuer's Amended and Restated Equity Compensation Plan (2018). The award, including dividend equivalents, vested on February 14, 2026, in an amount equal to 76% of the performance units awarded based upon Issuer's total shareholder return compared to the total shareholder return of a selected peer group, was certified by the Executive Compensation Committee of the Board of Directors on February 16, 2026, and issued pursuant to the terms of the grant agreement."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"Performance units awarded under the Issuer's Amended and Restated Equity Compensation Plan (2018). The award, including dividend equivalents, vested on February 14, 2026, in an amount equal to 76% of the performance units awarded based upon Issuer's total shareholder return compared to the total shareholder return of a selected peer group, was certified by the Executive Compensation Committee of the Board of Directors on February 16, 2026, and issued pursuant to the terms of the grant agreement."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F1","text":"Performance units awarded under the Issuer's Amended and Restated Equity Compensation Plan (2018). The award, including dividend equivalents, vested on February 14, 2026, in an amount equal to 76% of the performance units awarded based upon Issuer's total shareholder return compared to the total shareholder return of a selected peer group, was certified by the Executive Compensation Committee of the Board of Directors on February 16, 2026, and issued pursuant to the terms of the grant agreement."}],"balance_after":0,"derivative":{"underlying":"Common stock, par value $0.01","underlying_shares":1956},"source":{"system":"sec-edgar","filing":"0001193125-26-059432","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/1587732/000119312526059432/ownership.xml","form_type":"4"}},{"id":892681,"issuer":{"id":3906,"kind":"organization","name":"ONE Gas, Inc."},"owners":[{"id":65620,"kind":"person","name":"Shortridge William Kent","position":1,"cik":"0001916652","reported_name":"Shortridge William Kent","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"See Remarks"}}],"security":"Common stock, par value $0.01","published_at":"2026-02-19T21:15:30.000Z","date":"2026-02-14","kind":"tax_withholding","planned":false,"acquired":false,"shares":238.932,"price":86.04,"value":20557.70928,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F2","text":"Restricted units awarded under Issuer's Amended and Restated Equity Compensation Plan (2018). During the 3-year vesting period, the award was credited with dividend equivalents that were paid out in shares of common stock at the time the underlying units vested and were issued. The shares were issued pursuant to the terms of the grant agreement."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"Restricted units awarded under Issuer's Amended and Restated Equity Compensation Plan (2018). During the 3-year vesting period, the award was credited with dividend equivalents that were paid out in shares of common stock at the time the underlying units vested and were issued. The shares were issued pursuant to the terms of the grant agreement."}],"balance_after":11607.086,"source":{"system":"sec-edgar","filing":"0001193125-26-059432","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1587732/000119312526059432/ownership.xml","form_type":"4"}},{"id":892680,"issuer":{"id":3906,"kind":"organization","name":"ONE Gas, Inc."},"owners":[{"id":65620,"kind":"person","name":"Shortridge William Kent","position":1,"cik":"0001916652","reported_name":"Shortridge William Kent","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"See Remarks"}}],"security":"Common stock, par value $0.01","published_at":"2026-02-19T21:15:30.000Z","date":"2026-02-14","kind":"exercise","planned":false,"acquired":true,"shares":545.934,"price":86.04,"value":46972.16136,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F2","text":"Restricted units awarded under Issuer's Amended and Restated Equity Compensation Plan (2018). During the 3-year vesting period, the award was credited with dividend equivalents that were paid out in shares of common stock at the time the underlying units vested and were issued. The shares were issued pursuant to the terms of the grant agreement."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"Restricted units awarded under Issuer's Amended and Restated Equity Compensation Plan (2018). During the 3-year vesting period, the award was credited with dividend equivalents that were paid out in shares of common stock at the time the underlying units vested and were issued. The shares were issued pursuant to the terms of the grant agreement."}],"balance_after":11846.018,"source":{"system":"sec-edgar","filing":"0001193125-26-059432","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1587732/000119312526059432/ownership.xml","form_type":"4"}},{"id":892679,"issuer":{"id":3906,"kind":"organization","name":"ONE Gas, Inc."},"owners":[{"id":65620,"kind":"person","name":"Shortridge William Kent","position":1,"cik":"0001916652","reported_name":"Shortridge William Kent","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"See Remarks"}}],"security":"Common stock, par value $0.01","published_at":"2026-02-19T21:15:30.000Z","date":"2026-02-16","kind":"tax_withholding","planned":false,"acquired":false,"shares":815.716,"price":86.04,"value":70184.20464,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Performance units awarded under the Issuer's Amended and Restated Equity Compensation Plan (2018). The award, including dividend equivalents, vested on February 14, 2026, in an amount equal to 76% of the performance units awarded based upon Issuer's total shareholder return compared to the total shareholder return of a selected peer group, was certified by the Executive Compensation Committee of the Board of Directors on February 16, 2026, and issued pursuant to the terms of the grant agreement."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Performance units awarded under the Issuer's Amended and Restated Equity Compensation Plan (2018). The award, including dividend equivalents, vested on February 14, 2026, in an amount equal to 76% of the performance units awarded based upon Issuer's total shareholder return compared to the total shareholder return of a selected peer group, was certified by the Executive Compensation Committee of the Board of Directors on February 16, 2026, and issued pursuant to the terms of the grant agreement."}],"balance_after":11300.084,"source":{"system":"sec-edgar","filing":"0001193125-26-059432","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1587732/000119312526059432/ownership.xml","form_type":"4"}},{"id":892678,"issuer":{"id":3906,"kind":"organization","name":"ONE Gas, Inc."},"owners":[{"id":65620,"kind":"person","name":"Shortridge William Kent","position":1,"cik":"0001916652","reported_name":"Shortridge William Kent","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"See Remarks"}}],"security":"Common stock, par value $0.01","published_at":"2026-02-19T21:15:30.000Z","date":"2026-02-16","kind":"exercise","planned":false,"acquired":true,"shares":1659.639,"price":86.04,"value":142795.33956,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Performance units awarded under the Issuer's Amended and Restated Equity Compensation Plan (2018). The award, including dividend equivalents, vested on February 14, 2026, in an amount equal to 76% of the performance units awarded based upon Issuer's total shareholder return compared to the total shareholder return of a selected peer group, was certified by the Executive Compensation Committee of the Board of Directors on February 16, 2026, and issued pursuant to the terms of the grant agreement."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Performance units awarded under the Issuer's Amended and Restated Equity Compensation Plan (2018). The award, including dividend equivalents, vested on February 14, 2026, in an amount equal to 76% of the performance units awarded based upon Issuer's total shareholder return compared to the total shareholder return of a selected peer group, was certified by the Executive Compensation Committee of the Board of Directors on February 16, 2026, and issued pursuant to the terms of the grant agreement."}],"balance_after":12115.8,"source":{"system":"sec-edgar","filing":"0001193125-26-059432","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1587732/000119312526059432/ownership.xml","form_type":"4"}},{"id":892677,"issuer":{"id":3906,"kind":"organization","name":"ONE Gas, Inc."},"owners":[{"id":39569,"kind":"person","name":"McCormick Joseph L","position":1,"cik":"0001595607","reported_name":"McCormick Joseph L","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"See Remarks"}}],"security":"Performance Units 2023","published_at":"2026-02-19T21:15:26.000Z","date":"2026-02-16","kind":"exercise","planned":false,"acquired":false,"shares":4891,"price":86.04,"value":420821.64,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Performance units awarded under the Issuer's Amended and Restated Equity Compensation Plan (2018). The award, including dividend equivalents, vested on a prorated basis upon the reporting person's December 9, 2025, retirement pursuant to the terms of the award agreement. The award vested on February 14, 2026, in an amount equal to 76% of the performance units awarded based upon Issuer's total shareholder return compared to the total shareholder return of a selected peer group, was certified by the Executive Compensation Committee of the Board of Directors on February 16, 2026, and issued pursuant to the terms of the grant agreement."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Performance units awarded under the Issuer's Amended and Restated Equity Compensation Plan (2018). The award, including dividend equivalents, vested on a prorated basis upon the reporting person's December 9, 2025, retirement pursuant to the terms of the award agreement. The award vested on February 14, 2026, in an amount equal to 76% of the performance units awarded based upon Issuer's total shareholder return compared to the total shareholder return of a selected peer group, was certified by the Executive Compensation Committee of the Board of Directors on February 16, 2026, and issued pursuant to the terms of the grant agreement."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"Performance units awarded under the Issuer's Amended and Restated Equity Compensation Plan (2018). The award, including dividend equivalents, vested on a prorated basis upon the reporting person's December 9, 2025, retirement pursuant to the terms of the award agreement. The award vested on February 14, 2026, in an amount equal to 76% of the performance units awarded based upon Issuer's total shareholder return compared to the total shareholder return of a selected peer group, was certified by the Executive Compensation Committee of the Board of Directors on February 16, 2026, and issued pursuant to the terms of the grant agreement."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F1","text":"Performance units awarded under the Issuer's Amended and Restated Equity Compensation Plan (2018). The award, including dividend equivalents, vested on a prorated basis upon the reporting person's December 9, 2025, retirement pursuant to the terms of the award agreement. The award vested on February 14, 2026, in an amount equal to 76% of the performance units awarded based upon Issuer's total shareholder return compared to the total shareholder return of a selected peer group, was certified by the Executive Compensation Committee of the Board of Directors on February 16, 2026, and issued pursuant to the terms of the grant agreement."}],"balance_after":0,"derivative":{"underlying":"Common stock, par value $0.01","underlying_shares":4891},"source":{"system":"sec-edgar","filing":"0001193125-26-059429","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1587732/000119312526059429/ownership.xml","form_type":"4"}},{"id":892676,"issuer":{"id":3906,"kind":"organization","name":"ONE Gas, Inc."},"owners":[{"id":39569,"kind":"person","name":"McCormick Joseph L","position":1,"cik":"0001595607","reported_name":"McCormick Joseph L","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"See Remarks"}}],"security":"Common stock, par value $0.01","published_at":"2026-02-19T21:15:26.000Z","date":"2026-02-16","kind":"tax_withholding","planned":false,"acquired":false,"shares":1608.29,"price":86.04,"value":138377.2716,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Performance units awarded under the Issuer's Amended and Restated Equity Compensation Plan (2018). The award, including dividend equivalents, vested on a prorated basis upon the reporting person's December 9, 2025, retirement pursuant to the terms of the award agreement. The award vested on February 14, 2026, in an amount equal to 76% of the performance units awarded based upon Issuer's total shareholder return compared to the total shareholder return of a selected peer group, was certified by the Executive Compensation Committee of the Board of Directors on February 16, 2026, and issued pursuant to the terms of the grant agreement."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Performance units awarded under the Issuer's Amended and Restated Equity Compensation Plan (2018). The award, including dividend equivalents, vested on a prorated basis upon the reporting person's December 9, 2025, retirement pursuant to the terms of the award agreement. The award vested on February 14, 2026, in an amount equal to 76% of the performance units awarded based upon Issuer's total shareholder return compared to the total shareholder return of a selected peer group, was certified by the Executive Compensation Committee of the Board of Directors on February 16, 2026, and issued pursuant to the terms of the grant agreement."}],"balance_after":74907.02,"source":{"system":"sec-edgar","filing":"0001193125-26-059429","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1587732/000119312526059429/ownership.xml","form_type":"4"}},{"id":892675,"issuer":{"id":3906,"kind":"organization","name":"ONE Gas, Inc."},"owners":[{"id":39569,"kind":"person","name":"McCormick Joseph L","position":1,"cik":"0001595607","reported_name":"McCormick Joseph L","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"See Remarks"}}],"security":"Common stock, par value $0.01","published_at":"2026-02-19T21:15:26.000Z","date":"2026-02-16","kind":"exercise","planned":false,"acquired":true,"shares":3803.8,"price":86.04,"value":327278.952,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Performance units awarded under the Issuer's Amended and Restated Equity Compensation Plan (2018). The award, including dividend equivalents, vested on a prorated basis upon the reporting person's December 9, 2025, retirement pursuant to the terms of the award agreement. The award vested on February 14, 2026, in an amount equal to 76% of the performance units awarded based upon Issuer's total shareholder return compared to the total shareholder return of a selected peer group, was certified by the Executive Compensation Committee of the Board of Directors on February 16, 2026, and issued pursuant to the terms of the grant agreement."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Performance units awarded under the Issuer's Amended and Restated Equity Compensation Plan (2018). The award, including dividend equivalents, vested on a prorated basis upon the reporting person's December 9, 2025, retirement pursuant to the terms of the award agreement. The award vested on February 14, 2026, in an amount equal to 76% of the performance units awarded based upon Issuer's total shareholder return compared to the total shareholder return of a selected peer group, was certified by the Executive Compensation Committee of the Board of Directors on February 16, 2026, and issued pursuant to the terms of the grant agreement."}],"balance_after":76515.31,"source":{"system":"sec-edgar","filing":"0001193125-26-059429","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1587732/000119312526059429/ownership.xml","form_type":"4"}},{"id":893396,"issuer":{"id":3906,"kind":"organization","name":"ONE Gas, Inc."},"owners":[{"id":47475,"kind":"person","name":"Kouplen Angela","position":1,"cik":"0001675087","reported_name":"Kouplen Angela","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"See Remarks"}}],"security":"Restricted Units 2026","published_at":"2026-02-19T21:15:18.000Z","date":"2026-02-16","kind":"grant","planned":false,"acquired":true,"shares":1534,"price":86.04,"value":131985.36,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F4","text":"Restricted units awarded under the Issuer's Amended and Restated Equity Compensation Plan (2018). The award vests on February 17, 2029, in accordance with the terms of the Restricted Unit Award Agreement."},{"field":"price","element":"transactionPricePerShare","label":"F4","text":"Restricted units awarded under the Issuer's Amended and Restated Equity Compensation Plan (2018). The award vests on February 17, 2029, in accordance with the terms of the Restricted Unit Award Agreement."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F4","text":"Restricted units awarded under the Issuer's Amended and Restated Equity Compensation Plan (2018). The award vests on February 17, 2029, in accordance with the terms of the Restricted Unit Award Agreement."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F4","text":"Restricted units awarded under the Issuer's Amended and Restated Equity Compensation Plan (2018). The award vests on February 17, 2029, in accordance with the terms of the Restricted Unit Award Agreement."}],"balance_after":1534,"derivative":{"underlying":"Common stock, par value $0.01","underlying_shares":1534},"source":{"system":"sec-edgar","filing":"0001193125-26-059425","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":8,"url":"https://www.sec.gov/Archives/edgar/data/1675087/000119312526059425/ownership.xml","form_type":"4"}},{"id":893395,"issuer":{"id":3906,"kind":"organization","name":"ONE Gas, Inc."},"owners":[{"id":47475,"kind":"person","name":"Kouplen Angela","position":1,"cik":"0001675087","reported_name":"Kouplen Angela","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"See Remarks"}}],"security":"Performance Units 2026","published_at":"2026-02-19T21:15:18.000Z","date":"2026-02-16","kind":"grant","planned":false,"acquired":true,"shares":2301,"price":86.04,"value":197978.04,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F3","text":"Performance units awarded under the Issuer's Amended and Restated Equity Compensation Plan (2018). The award will vest on February 17, 2029, for a percentage (0% to 200%) of the performance units awarded based upon the Issuer's total shareholder return compared to total stockholder return of a selected peer group over the performance period from January 1, 2026, through December 31, 2029, in accordance with the terms of the Performance Unit Award Agreement."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"Performance units awarded under the Issuer's Amended and Restated Equity Compensation Plan (2018). The award will vest on February 17, 2029, for a percentage (0% to 200%) of the performance units awarded based upon the Issuer's total shareholder return compared to total stockholder return of a selected peer group over the performance period from January 1, 2026, through December 31, 2029, in accordance with the terms of the Performance Unit Award Agreement."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"Performance units awarded under the Issuer's Amended and Restated Equity Compensation Plan (2018). The award will vest on February 17, 2029, for a percentage (0% to 200%) of the performance units awarded based upon the Issuer's total shareholder return compared to total stockholder return of a selected peer group over the performance period from January 1, 2026, through December 31, 2029, in accordance with the terms of the Performance Unit Award Agreement."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F3","text":"Performance units awarded under the Issuer's Amended and Restated Equity Compensation Plan (2018). The award will vest on February 17, 2029, for a percentage (0% to 200%) of the performance units awarded based upon the Issuer's total shareholder return compared to total stockholder return of a selected peer group over the performance period from January 1, 2026, through December 31, 2029, in accordance with the terms of the Performance Unit Award Agreement."}],"balance_after":2301,"derivative":{"underlying":"Common stock, par value $0.01","underlying_shares":2301},"source":{"system":"sec-edgar","filing":"0001193125-26-059425","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":7,"url":"https://www.sec.gov/Archives/edgar/data/1675087/000119312526059425/ownership.xml","form_type":"4"}},{"id":893394,"issuer":{"id":3906,"kind":"organization","name":"ONE Gas, Inc."},"owners":[{"id":47475,"kind":"person","name":"Kouplen Angela","position":1,"cik":"0001675087","reported_name":"Kouplen Angela","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"See Remarks"}}],"security":"Restricted Units 2023","published_at":"2026-02-19T21:15:18.000Z","date":"2026-02-14","kind":"exercise","planned":false,"acquired":false,"shares":660,"price":86.04,"value":56786.4,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"Restricted units awarded under Issuer's Amended and Restated Equity Compensation Plan (2018). During the 3-year vesting period, the award was credited with dividend equivalents that were paid out in shares of common stock at the time the underlying units vested and were issued. The shares were issued pursuant to the terms of the grant agreement."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"Restricted units awarded under Issuer's Amended and Restated Equity Compensation Plan (2018). During the 3-year vesting period, the award was credited with dividend equivalents that were paid out in shares of common stock at the time the underlying units vested and were issued. The shares were issued pursuant to the terms of the grant agreement."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"Restricted units awarded under Issuer's Amended and Restated Equity Compensation Plan (2018). During the 3-year vesting period, the award was credited with dividend equivalents that were paid out in shares of common stock at the time the underlying units vested and were issued. The shares were issued pursuant to the terms of the grant agreement."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"Restricted units awarded under Issuer's Amended and Restated Equity Compensation Plan (2018). During the 3-year vesting period, the award was credited with dividend equivalents that were paid out in shares of common stock at the time the underlying units vested and were issued. The shares were issued pursuant to the terms of the grant agreement."}],"balance_after":0,"derivative":{"underlying":"Common stock, par value $0.01","underlying_shares":660},"source":{"system":"sec-edgar","filing":"0001193125-26-059425","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/1675087/000119312526059425/ownership.xml","form_type":"4"}},{"id":893393,"issuer":{"id":3906,"kind":"organization","name":"ONE Gas, Inc."},"owners":[{"id":47475,"kind":"person","name":"Kouplen Angela","position":1,"cik":"0001675087","reported_name":"Kouplen Angela","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"See Remarks"}}],"security":"Performance Units 2023","published_at":"2026-02-19T21:15:18.000Z","date":"2026-02-16","kind":"exercise","planned":false,"acquired":false,"shares":2639,"price":86.04,"value":227059.56,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Performance units awarded under the Issuer's Amended and Restated Equity Compensation Plan (2018). The award, including dividend equivalents, vested on February 14, 2026, in an amount equal to 76% of the performance units awarded based upon Issuer's total shareholder return compared to the total shareholder return of a selected peer group, was certified by the Executive Compensation Committee of the Board of Directors on February 16, 2026, and issued pursuant to the terms of the grant agreement."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Performance units awarded under the Issuer's Amended and Restated Equity Compensation Plan (2018). The award, including dividend equivalents, vested on February 14, 2026, in an amount equal to 76% of the performance units awarded based upon Issuer's total shareholder return compared to the total shareholder return of a selected peer group, was certified by the Executive Compensation Committee of the Board of Directors on February 16, 2026, and issued pursuant to the terms of the grant agreement."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"Performance units awarded under the Issuer's Amended and Restated Equity Compensation Plan (2018). The award, including dividend equivalents, vested on February 14, 2026, in an amount equal to 76% of the performance units awarded based upon Issuer's total shareholder return compared to the total shareholder return of a selected peer group, was certified by the Executive Compensation Committee of the Board of Directors on February 16, 2026, and issued pursuant to the terms of the grant agreement."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F1","text":"Performance units awarded under the Issuer's Amended and Restated Equity Compensation Plan (2018). The award, including dividend equivalents, vested on February 14, 2026, in an amount equal to 76% of the performance units awarded based upon Issuer's total shareholder return compared to the total shareholder return of a selected peer group, was certified by the Executive Compensation Committee of the Board of Directors on February 16, 2026, and issued pursuant to the terms of the grant agreement."}],"balance_after":0,"derivative":{"underlying":"Common stock, par value $0.01","underlying_shares":2639},"source":{"system":"sec-edgar","filing":"0001193125-26-059425","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1675087/000119312526059425/ownership.xml","form_type":"4"}},{"id":893392,"issuer":{"id":3906,"kind":"organization","name":"ONE Gas, Inc."},"owners":[{"id":47475,"kind":"person","name":"Kouplen Angela","position":1,"cik":"0001675087","reported_name":"Kouplen Angela","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"See Remarks"}}],"security":"Common stock, par value $0.01","published_at":"2026-02-19T21:15:18.000Z","date":"2026-02-14","kind":"tax_withholding","planned":false,"acquired":false,"shares":300.603,"price":86.04,"value":25863.88212,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F2","text":"Restricted units awarded under Issuer's Amended and Restated Equity Compensation Plan (2018). During the 3-year vesting period, the award was credited with dividend equivalents that were paid out in shares of common stock at the time the underlying units vested and were issued. The shares were issued pursuant to the terms of the grant agreement."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"Restricted units awarded under Issuer's Amended and Restated Equity Compensation Plan (2018). During the 3-year vesting period, the award was credited with dividend equivalents that were paid out in shares of common stock at the time the underlying units vested and were issued. The shares were issued pursuant to the terms of the grant agreement."}],"balance_after":1856.663,"source":{"system":"sec-edgar","filing":"0001193125-26-059425","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1675087/000119312526059425/ownership.xml","form_type":"4"}},{"id":893391,"issuer":{"id":3906,"kind":"organization","name":"ONE Gas, Inc."},"owners":[{"id":47475,"kind":"person","name":"Kouplen Angela","position":1,"cik":"0001675087","reported_name":"Kouplen Angela","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"See Remarks"}}],"security":"Common stock, par value $0.01","published_at":"2026-02-19T21:15:18.000Z","date":"2026-02-14","kind":"exercise","planned":false,"acquired":true,"shares":718.287,"price":86.04,"value":61801.41348,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F2","text":"Restricted units awarded under Issuer's Amended and Restated Equity Compensation Plan (2018). During the 3-year vesting period, the award was credited with dividend equivalents that were paid out in shares of common stock at the time the underlying units vested and were issued. The shares were issued pursuant to the terms of the grant agreement."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"Restricted units awarded under Issuer's Amended and Restated Equity Compensation Plan (2018). During the 3-year vesting period, the award was credited with dividend equivalents that were paid out in shares of common stock at the time the underlying units vested and were issued. The shares were issued pursuant to the terms of the grant agreement."}],"balance_after":2157.266,"source":{"system":"sec-edgar","filing":"0001193125-26-059425","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1675087/000119312526059425/ownership.xml","form_type":"4"}},{"id":893390,"issuer":{"id":3906,"kind":"organization","name":"ONE Gas, Inc."},"owners":[{"id":47475,"kind":"person","name":"Kouplen Angela","position":1,"cik":"0001675087","reported_name":"Kouplen Angela","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"See Remarks"}}],"security":"Common stock, par value $0.01","published_at":"2026-02-19T21:15:18.000Z","date":"2026-02-16","kind":"tax_withholding","planned":false,"acquired":false,"shares":1000.109,"price":86.04,"value":86049.37836,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Performance units awarded under the Issuer's Amended and Restated Equity Compensation Plan (2018). The award, including dividend equivalents, vested on February 14, 2026, in an amount equal to 76% of the performance units awarded based upon Issuer's total shareholder return compared to the total shareholder return of a selected peer group, was certified by the Executive Compensation Committee of the Board of Directors on February 16, 2026, and issued pursuant to the terms of the grant agreement."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Performance units awarded under the Issuer's Amended and Restated Equity Compensation Plan (2018). The award, including dividend equivalents, vested on February 14, 2026, in an amount equal to 76% of the performance units awarded based upon Issuer's total shareholder return compared to the total shareholder return of a selected peer group, was certified by the Executive Compensation Committee of the Board of Directors on February 16, 2026, and issued pursuant to the terms of the grant agreement."}],"balance_after":1438.979,"source":{"system":"sec-edgar","filing":"0001193125-26-059425","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1675087/000119312526059425/ownership.xml","form_type":"4"}},{"id":893389,"issuer":{"id":3906,"kind":"organization","name":"ONE Gas, Inc."},"owners":[{"id":47475,"kind":"person","name":"Kouplen Angela","position":1,"cik":"0001675087","reported_name":"Kouplen Angela","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"See Remarks"}}],"security":"Common stock, par value $0.01","published_at":"2026-02-19T21:15:18.000Z","date":"2026-02-16","kind":"exercise","planned":false,"acquired":true,"shares":2182.772,"price":86.04,"value":187805.70288,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Performance units awarded under the Issuer's Amended and Restated Equity Compensation Plan (2018). The award, including dividend equivalents, vested on February 14, 2026, in an amount equal to 76% of the performance units awarded based upon Issuer's total shareholder return compared to the total shareholder return of a selected peer group, was certified by the Executive Compensation Committee of the Board of Directors on February 16, 2026, and issued pursuant to the terms of the grant agreement."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Performance units awarded under the Issuer's Amended and Restated Equity Compensation Plan (2018). The award, including dividend equivalents, vested on February 14, 2026, in an amount equal to 76% of the performance units awarded based upon Issuer's total shareholder return compared to the total shareholder return of a selected peer group, was certified by the Executive Compensation Committee of the Board of Directors on February 16, 2026, and issued pursuant to the terms of the grant agreement."}],"balance_after":2439.088,"source":{"system":"sec-edgar","filing":"0001193125-26-059425","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1675087/000119312526059425/ownership.xml","form_type":"4"}},{"id":892674,"issuer":{"id":3906,"kind":"organization","name":"ONE Gas, Inc."},"owners":[{"id":64683,"kind":"person","name":"Brumfield Brian F.","position":1,"cik":"0001951536","reported_name":"Brumfield Brian F.","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"See Remarks"}}],"security":"Restricted Units 2026","published_at":"2026-02-19T21:15:17.000Z","date":"2026-02-16","kind":"grant","planned":false,"acquired":true,"shares":959,"price":86.04,"value":82512.36,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F4","text":"Restricted units awarded under the Issuer's Amended and Restated Equity Compensation Plan (2018). The award vests on February 17, 2029, in accordance with the terms of the Restricted Unit Award Agreement."},{"field":"price","element":"transactionPricePerShare","label":"F4","text":"Restricted units awarded under the Issuer's Amended and Restated Equity Compensation Plan (2018). The award vests on February 17, 2029, in accordance with the terms of the Restricted Unit Award Agreement."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F4","text":"Restricted units awarded under the Issuer's Amended and Restated Equity Compensation Plan (2018). The award vests on February 17, 2029, in accordance with the terms of the Restricted Unit Award Agreement."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F4","text":"Restricted units awarded under the Issuer's Amended and Restated Equity Compensation Plan (2018). The award vests on February 17, 2029, in accordance with the terms of the Restricted Unit Award Agreement."}],"balance_after":959,"derivative":{"underlying":"Common stock, par value $0.01","underlying_shares":959},"source":{"system":"sec-edgar","filing":"0001193125-26-059419","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":9,"url":"https://www.sec.gov/Archives/edgar/data/1587732/000119312526059419/ownership.xml","form_type":"4"}},{"id":892673,"issuer":{"id":3906,"kind":"organization","name":"ONE Gas, Inc."},"owners":[{"id":64683,"kind":"person","name":"Brumfield Brian F.","position":1,"cik":"0001951536","reported_name":"Brumfield Brian F.","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"See Remarks"}}],"security":"Performance Units 2026","published_at":"2026-02-19T21:15:17.000Z","date":"2026-02-16","kind":"grant","planned":false,"acquired":true,"shares":959,"price":86.04,"value":82512.36,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F3","text":"Performance units awarded under the Issuer's Amended and Restated Equity Compensation Plan (2018). The award will vest on February 17, 2029, for a percentage (0% to 200%) of the performance units awarded based upon the Issuer's total shareholder return compared to total stockholder return of a selected peer group over the performance period from January 1, 2026, through December 31, 2029, in accordance with the terms of the Performance Unit Award Agreement."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"Performance units awarded under the Issuer's Amended and Restated Equity Compensation Plan (2018). The award will vest on February 17, 2029, for a percentage (0% to 200%) of the performance units awarded based upon the Issuer's total shareholder return compared to total stockholder return of a selected peer group over the performance period from January 1, 2026, through December 31, 2029, in accordance with the terms of the Performance Unit Award Agreement."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"Performance units awarded under the Issuer's Amended and Restated Equity Compensation Plan (2018). The award will vest on February 17, 2029, for a percentage (0% to 200%) of the performance units awarded based upon the Issuer's total shareholder return compared to total stockholder return of a selected peer group over the performance period from January 1, 2026, through December 31, 2029, in accordance with the terms of the Performance Unit Award Agreement."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F3","text":"Performance units awarded under the Issuer's Amended and Restated Equity Compensation Plan (2018). The award will vest on February 17, 2029, for a percentage (0% to 200%) of the performance units awarded based upon the Issuer's total shareholder return compared to total stockholder return of a selected peer group over the performance period from January 1, 2026, through December 31, 2029, in accordance with the terms of the Performance Unit Award Agreement."}],"balance_after":959,"derivative":{"underlying":"Common stock, par value $0.01","underlying_shares":959},"source":{"system":"sec-edgar","filing":"0001193125-26-059419","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":8,"url":"https://www.sec.gov/Archives/edgar/data/1587732/000119312526059419/ownership.xml","form_type":"4"}},{"id":892672,"issuer":{"id":3906,"kind":"organization","name":"ONE Gas, Inc."},"owners":[{"id":64683,"kind":"person","name":"Brumfield Brian F.","position":1,"cik":"0001951536","reported_name":"Brumfield Brian F.","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"See Remarks"}}],"security":"Restricted Units 2023","published_at":"2026-02-19T21:15:17.000Z","date":"2026-02-14","kind":"exercise","planned":false,"acquired":false,"shares":504,"price":86.04,"value":43364.16,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"Restricted units awarded under Issuer's Amended and Restated Equity Compensation Plan (2018). During the 3-year vesting period, the award was credited with dividend equivalents that were paid out in shares of common stock at the time the underlying units vested and were issued. The shares were issued pursuant to the terms of the grant agreement."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"Restricted units awarded under Issuer's Amended and Restated Equity Compensation Plan (2018). During the 3-year vesting period, the award was credited with dividend equivalents that were paid out in shares of common stock at the time the underlying units vested and were issued. The shares were issued pursuant to the terms of the grant agreement."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"Restricted units awarded under Issuer's Amended and Restated Equity Compensation Plan (2018). During the 3-year vesting period, the award was credited with dividend equivalents that were paid out in shares of common stock at the time the underlying units vested and were issued. The shares were issued pursuant to the terms of the grant agreement."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"Restricted units awarded under Issuer's Amended and Restated Equity Compensation Plan (2018). During the 3-year vesting period, the award was credited with dividend equivalents that were paid out in shares of common stock at the time the underlying units vested and were issued. The shares were issued pursuant to the terms of the grant agreement."}],"balance_after":0,"derivative":{"underlying":"Common stock, par value $0.01","underlying_shares":504},"source":{"system":"sec-edgar","filing":"0001193125-26-059419","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":7,"url":"https://www.sec.gov/Archives/edgar/data/1587732/000119312526059419/ownership.xml","form_type":"4"}},{"id":892671,"issuer":{"id":3906,"kind":"organization","name":"ONE Gas, Inc."},"owners":[{"id":64683,"kind":"person","name":"Brumfield Brian F.","position":1,"cik":"0001951536","reported_name":"Brumfield Brian F.","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"See Remarks"}}],"security":"Performance Units 2023","published_at":"2026-02-19T21:15:17.000Z","date":"2026-02-16","kind":"exercise","planned":false,"acquired":false,"shares":1513,"price":86.04,"value":130178.52,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Performance units awarded under the Issuer's Amended and Restated Equity Compensation Plan (2018). The award, including dividend equivalents, vested on February 14, 2026, in an amount equal to 76% of the performance units awarded based upon Issuer's total shareholder return compared to the total shareholder return of a selected peer group, was certified by the Executive Compensation Committee of the Board of Directors on February 16, 2026, and issued pursuant to the terms of the grant agreement."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Performance units awarded under the Issuer's Amended and Restated Equity Compensation Plan (2018). The award, including dividend equivalents, vested on February 14, 2026, in an amount equal to 76% of the performance units awarded based upon Issuer's total shareholder return compared to the total shareholder return of a selected peer group, was certified by the Executive Compensation Committee of the Board of Directors on February 16, 2026, and issued pursuant to the terms of the grant agreement."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"Performance units awarded under the Issuer's Amended and Restated Equity Compensation Plan (2018). The award, including dividend equivalents, vested on February 14, 2026, in an amount equal to 76% of the performance units awarded based upon Issuer's total shareholder return compared to the total shareholder return of a selected peer group, was certified by the Executive Compensation Committee of the Board of Directors on February 16, 2026, and issued pursuant to the terms of the grant agreement."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F1","text":"Performance units awarded under the Issuer's Amended and Restated Equity Compensation Plan (2018). The award, including dividend equivalents, vested on February 14, 2026, in an amount equal to 76% of the performance units awarded based upon Issuer's total shareholder return compared to the total shareholder return of a selected peer group, was certified by the Executive Compensation Committee of the Board of Directors on February 16, 2026, and issued pursuant to the terms of the grant agreement."}],"balance_after":0,"derivative":{"underlying":"Common stock, par value $0.01","underlying_shares":1513},"source":{"system":"sec-edgar","filing":"0001193125-26-059419","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/1587732/000119312526059419/ownership.xml","form_type":"4"}},{"id":892670,"issuer":{"id":3906,"kind":"organization","name":"ONE Gas, Inc."},"owners":[{"id":64683,"kind":"person","name":"Brumfield Brian F.","position":1,"cik":"0001951536","reported_name":"Brumfield Brian F.","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"See Remarks"}}],"security":"Common stock, par value $0.01","published_at":"2026-02-19T21:15:17.000Z","date":"2026-02-14","kind":"tax_withholding","planned":false,"acquired":false,"shares":186.914,"price":86.04,"value":16082.08056,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F2","text":"Restricted units awarded under Issuer's Amended and Restated Equity Compensation Plan (2018). During the 3-year vesting period, the award was credited with dividend equivalents that were paid out in shares of common stock at the time the underlying units vested and were issued. The shares were issued pursuant to the terms of the grant agreement."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"Restricted units awarded under Issuer's Amended and Restated Equity Compensation Plan (2018). During the 3-year vesting period, the award was credited with dividend equivalents that were paid out in shares of common stock at the time the underlying units vested and were issued. The shares were issued pursuant to the terms of the grant agreement."}],"balance_after":3246.212,"source":{"system":"sec-edgar","filing":"0001193125-26-059419","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1587732/000119312526059419/ownership.xml","form_type":"4"}},{"id":892669,"issuer":{"id":3906,"kind":"organization","name":"ONE Gas, Inc."},"owners":[{"id":64683,"kind":"person","name":"Brumfield Brian F.","position":1,"cik":"0001951536","reported_name":"Brumfield Brian F.","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"See Remarks"}}],"security":"Common stock, par value $0.01","published_at":"2026-02-19T21:15:17.000Z","date":"2026-02-14","kind":"exercise","planned":false,"acquired":true,"shares":562.68,"price":86.04,"value":48412.9872,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F2","text":"Restricted units awarded under Issuer's Amended and Restated Equity Compensation Plan (2018). During the 3-year vesting period, the award was credited with dividend equivalents that were paid out in shares of common stock at the time the underlying units vested and were issued. The shares were issued pursuant to the terms of the grant agreement."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"Restricted units awarded under Issuer's Amended and Restated Equity Compensation Plan (2018). During the 3-year vesting period, the award was credited with dividend equivalents that were paid out in shares of common stock at the time the underlying units vested and were issued. The shares were issued pursuant to the terms of the grant agreement."}],"balance_after":3433.126,"source":{"system":"sec-edgar","filing":"0001193125-26-059419","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1587732/000119312526059419/ownership.xml","form_type":"4"}},{"id":892668,"issuer":{"id":3906,"kind":"organization","name":"ONE Gas, Inc."},"owners":[{"id":64683,"kind":"person","name":"Brumfield Brian F.","position":1,"cik":"0001951536","reported_name":"Brumfield Brian F.","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"See Remarks"}}],"security":"Common stock, par value $0.01","published_at":"2026-02-19T21:15:17.000Z","date":"2026-02-16","kind":"tax_withholding","planned":false,"acquired":false,"shares":438.398,"price":86.04,"value":37719.76392,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Performance units awarded under the Issuer's Amended and Restated Equity Compensation Plan (2018). The award, including dividend equivalents, vested on February 14, 2026, in an amount equal to 76% of the performance units awarded based upon Issuer's total shareholder return compared to the total shareholder return of a selected peer group, was certified by the Executive Compensation Committee of the Board of Directors on February 16, 2026, and issued pursuant to the terms of the grant agreement."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Performance units awarded under the Issuer's Amended and Restated Equity Compensation Plan (2018). The award, including dividend equivalents, vested on February 14, 2026, in an amount equal to 76% of the performance units awarded based upon Issuer's total shareholder return compared to the total shareholder return of a selected peer group, was certified by the Executive Compensation Committee of the Board of Directors on February 16, 2026, and issued pursuant to the terms of the grant agreement."}],"balance_after":2870.446,"source":{"system":"sec-edgar","filing":"0001193125-26-059419","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1587732/000119312526059419/ownership.xml","form_type":"4"}},{"id":892667,"issuer":{"id":3906,"kind":"organization","name":"ONE Gas, Inc."},"owners":[{"id":64683,"kind":"person","name":"Brumfield Brian F.","position":1,"cik":"0001951536","reported_name":"Brumfield Brian F.","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"See Remarks"}}],"security":"Common stock, par value $0.01","published_at":"2026-02-19T21:15:17.000Z","date":"2026-02-16","kind":"exercise","planned":false,"acquired":true,"shares":1283.757,"price":86.04,"value":110454.45228,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Performance units awarded under the Issuer's Amended and Restated Equity Compensation Plan (2018). The award, including dividend equivalents, vested on February 14, 2026, in an amount equal to 76% of the performance units awarded based upon Issuer's total shareholder return compared to the total shareholder return of a selected peer group, was certified by the Executive Compensation Committee of the Board of Directors on February 16, 2026, and issued pursuant to the terms of the grant agreement."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Performance units awarded under the Issuer's Amended and Restated Equity Compensation Plan (2018). The award, including dividend equivalents, vested on February 14, 2026, in an amount equal to 76% of the performance units awarded based upon Issuer's total shareholder return compared to the total shareholder return of a selected peer group, was certified by the Executive Compensation Committee of the Board of Directors on February 16, 2026, and issued pursuant to the terms of the grant agreement."}],"balance_after":3308.844,"source":{"system":"sec-edgar","filing":"0001193125-26-059419","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1587732/000119312526059419/ownership.xml","form_type":"4"}},{"id":892658,"issuer":{"id":3906,"kind":"organization","name":"ONE Gas, Inc."},"owners":[{"id":65618,"kind":"person","name":"Gregory Regina","position":1,"cik":"0001682050","reported_name":"Gregory Regina","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"See Remarks"}}],"security":"Restricted Units 2026","published_at":"2026-02-19T21:15:15.000Z","date":"2026-02-16","kind":"grant","planned":false,"acquired":true,"shares":2557,"price":86.04,"value":220004.28,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"Restricted units awarded under the Issuer's Amended and Restated Equity Compensation Plan (2018). The award vests on February 17, 2029, in accordance with the terms of the Restricted Unit Award Agreement."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"Restricted units awarded under the Issuer's Amended and Restated Equity Compensation Plan (2018). The award vests on February 17, 2029, in accordance with the terms of the Restricted Unit Award Agreement."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"Restricted units awarded under the Issuer's Amended and Restated Equity Compensation Plan (2018). The award vests on February 17, 2029, in accordance with the terms of the Restricted Unit Award Agreement."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"Restricted units awarded under the Issuer's Amended and Restated Equity Compensation Plan (2018). The award vests on February 17, 2029, in accordance with the terms of the Restricted Unit Award Agreement."}],"balance_after":2557,"derivative":{"underlying":"Common stock, par value $0.01","underlying_shares":2557},"source":{"system":"sec-edgar","filing":"0001193125-26-059418","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1587732/000119312526059418/ownership.xml","form_type":"4"}},{"id":892657,"issuer":{"id":3906,"kind":"organization","name":"ONE Gas, Inc."},"owners":[{"id":65618,"kind":"person","name":"Gregory Regina","position":1,"cik":"0001682050","reported_name":"Gregory Regina","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"See Remarks"}}],"security":"Performance Units 2026","published_at":"2026-02-19T21:15:15.000Z","date":"2026-02-16","kind":"grant","planned":false,"acquired":true,"shares":3835,"price":86.04,"value":329963.4,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Performance units awarded under the Issuer's Amended and Restated Equity Compensation Plan (2018). The award will vest on February 17, 2029, for a percentage (0% to 200%) of the performance units awarded based upon the Issuer's total shareholder return compared to total stockholder return of a selected peer group over the performance period from January 1, 2026, through December 31, 2029, in accordance with the terms of the Performance Unit Award Agreement."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Performance units awarded under the Issuer's Amended and Restated Equity Compensation Plan (2018). The award will vest on February 17, 2029, for a percentage (0% to 200%) of the performance units awarded based upon the Issuer's total shareholder return compared to total stockholder return of a selected peer group over the performance period from January 1, 2026, through December 31, 2029, in accordance with the terms of the Performance Unit Award Agreement."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"Performance units awarded under the Issuer's Amended and Restated Equity Compensation Plan (2018). The award will vest on February 17, 2029, for a percentage (0% to 200%) of the performance units awarded based upon the Issuer's total shareholder return compared to total stockholder return of a selected peer group over the performance period from January 1, 2026, through December 31, 2029, in accordance with the terms of the Performance Unit Award Agreement."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F1","text":"Performance units awarded under the Issuer's Amended and Restated Equity Compensation Plan (2018). The award will vest on February 17, 2029, for a percentage (0% to 200%) of the performance units awarded based upon the Issuer's total shareholder return compared to total stockholder return of a selected peer group over the performance period from January 1, 2026, through December 31, 2029, in accordance with the terms of the Performance Unit Award Agreement."}],"balance_after":3835,"derivative":{"underlying":"Common stock, par value $0.01","underlying_shares":3835},"source":{"system":"sec-edgar","filing":"0001193125-26-059418","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1587732/000119312526059418/ownership.xml","form_type":"4"}},{"id":892666,"issuer":{"id":3906,"kind":"organization","name":"ONE Gas, Inc."},"owners":[{"id":65619,"kind":"person","name":"Bender Mark A.","position":1,"cik":"0001657393","reported_name":"Bender Mark A.","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"See Remarks"}}],"security":"Restricted Units 2026","published_at":"2026-02-19T21:15:13.000Z","date":"2026-02-16","kind":"grant","planned":false,"acquired":true,"shares":1534,"price":86.04,"value":131985.36,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F4","text":"Restricted units awarded under the Issuer's Amended and Restated Equity Compensation Plan (2018). The award vests on February 17, 2029, in accordance with the terms of the Restricted Unit Award Agreement."},{"field":"price","element":"transactionPricePerShare","label":"F4","text":"Restricted units awarded under the Issuer's Amended and Restated Equity Compensation Plan (2018). The award vests on February 17, 2029, in accordance with the terms of the Restricted Unit Award Agreement."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F4","text":"Restricted units awarded under the Issuer's Amended and Restated Equity Compensation Plan (2018). The award vests on February 17, 2029, in accordance with the terms of the Restricted Unit Award Agreement."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F4","text":"Restricted units awarded under the Issuer's Amended and Restated Equity Compensation Plan (2018). The award vests on February 17, 2029, in accordance with the terms of the Restricted Unit Award Agreement."}],"balance_after":1534,"derivative":{"underlying":"Common stock, par value $0.01","underlying_shares":1534},"source":{"system":"sec-edgar","filing":"0001193125-26-059424","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":8,"url":"https://www.sec.gov/Archives/edgar/data/1587732/000119312526059424/ownership.xml","form_type":"4"}},{"id":892665,"issuer":{"id":3906,"kind":"organization","name":"ONE Gas, Inc."},"owners":[{"id":65619,"kind":"person","name":"Bender Mark A.","position":1,"cik":"0001657393","reported_name":"Bender Mark A.","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"See Remarks"}}],"security":"Performance Units 2026","published_at":"2026-02-19T21:15:13.000Z","date":"2026-02-16","kind":"grant","planned":false,"acquired":true,"shares":2301,"price":86.04,"value":197978.04,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F3","text":"Performance units awarded under the Issuer's Amended and Restated Equity Compensation Plan (2018). The award will vest on February 17, 2029, for a percentage (0% to 200%) of the performance units awarded based upon the Issuer's total shareholder return compared to total stockholder return of a selected peer group over the performance period from January 1, 2026, through December 31, 2029, in accordance with the terms of the Performance Unit Award Agreement."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"Performance units awarded under the Issuer's Amended and Restated Equity Compensation Plan (2018). The award will vest on February 17, 2029, for a percentage (0% to 200%) of the performance units awarded based upon the Issuer's total shareholder return compared to total stockholder return of a selected peer group over the performance period from January 1, 2026, through December 31, 2029, in accordance with the terms of the Performance Unit Award Agreement."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"Performance units awarded under the Issuer's Amended and Restated Equity Compensation Plan (2018). The award will vest on February 17, 2029, for a percentage (0% to 200%) of the performance units awarded based upon the Issuer's total shareholder return compared to total stockholder return of a selected peer group over the performance period from January 1, 2026, through December 31, 2029, in accordance with the terms of the Performance Unit Award Agreement."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F3","text":"Performance units awarded under the Issuer's Amended and Restated Equity Compensation Plan (2018). The award will vest on February 17, 2029, for a percentage (0% to 200%) of the performance units awarded based upon the Issuer's total shareholder return compared to total stockholder return of a selected peer group over the performance period from January 1, 2026, through December 31, 2029, in accordance with the terms of the Performance Unit Award Agreement."}],"balance_after":2301,"derivative":{"underlying":"Common stock, par value $0.01","underlying_shares":2301},"source":{"system":"sec-edgar","filing":"0001193125-26-059424","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":7,"url":"https://www.sec.gov/Archives/edgar/data/1587732/000119312526059424/ownership.xml","form_type":"4"}},{"id":892664,"issuer":{"id":3906,"kind":"organization","name":"ONE Gas, Inc."},"owners":[{"id":65619,"kind":"person","name":"Bender Mark A.","position":1,"cik":"0001657393","reported_name":"Bender Mark A.","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"See Remarks"}}],"security":"Restricted Units 2023","published_at":"2026-02-19T21:15:13.000Z","date":"2026-02-14","kind":"exercise","planned":false,"acquired":false,"shares":795,"price":86.04,"value":68401.8,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"Restricted units awarded under Issuer's Amended and Restated Equity Compensation Plan (2018). During the 3-year vesting period, the award was credited with dividend equivalents that were paid out in shares of common stock at the time the underlying units vested and were issued. The shares were issued pursuant to the terms of the grant agreement."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"Restricted units awarded under Issuer's Amended and Restated Equity Compensation Plan (2018). During the 3-year vesting period, the award was credited with dividend equivalents that were paid out in shares of common stock at the time the underlying units vested and were issued. The shares were issued pursuant to the terms of the grant agreement."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"Restricted units awarded under Issuer's Amended and Restated Equity Compensation Plan (2018). During the 3-year vesting period, the award was credited with dividend equivalents that were paid out in shares of common stock at the time the underlying units vested and were issued. The shares were issued pursuant to the terms of the grant agreement."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"Restricted units awarded under Issuer's Amended and Restated Equity Compensation Plan (2018). During the 3-year vesting period, the award was credited with dividend equivalents that were paid out in shares of common stock at the time the underlying units vested and were issued. The shares were issued pursuant to the terms of the grant agreement."}],"balance_after":0,"derivative":{"underlying":"Common stock, par value $0.01","underlying_shares":795},"source":{"system":"sec-edgar","filing":"0001193125-26-059424","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/1587732/000119312526059424/ownership.xml","form_type":"4"}},{"id":892663,"issuer":{"id":3906,"kind":"organization","name":"ONE Gas, Inc."},"owners":[{"id":65619,"kind":"person","name":"Bender Mark A.","position":1,"cik":"0001657393","reported_name":"Bender Mark A.","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"See Remarks"}}],"security":"Performance Units 2023","published_at":"2026-02-19T21:15:13.000Z","date":"2026-02-16","kind":"exercise","planned":false,"acquired":false,"shares":3179,"price":86.04,"value":273521.16,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Performance units awarded under the Issuer's Amended and Restated Equity Compensation Plan (2018). The award, including dividend equivalents, vested on February 14, 2026, in an amount equal to 76% of the performance units awarded based upon Issuer's total shareholder return compared to the total shareholder return of a selected peer group, was certified by the Executive Compensation Committee of the Board of Directors on February 16, 2026, and issued pursuant to the terms of the grant agreement."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Performance units awarded under the Issuer's Amended and Restated Equity Compensation Plan (2018). The award, including dividend equivalents, vested on February 14, 2026, in an amount equal to 76% of the performance units awarded based upon Issuer's total shareholder return compared to the total shareholder return of a selected peer group, was certified by the Executive Compensation Committee of the Board of Directors on February 16, 2026, and issued pursuant to the terms of the grant agreement."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"Performance units awarded under the Issuer's Amended and Restated Equity Compensation Plan (2018). The award, including dividend equivalents, vested on February 14, 2026, in an amount equal to 76% of the performance units awarded based upon Issuer's total shareholder return compared to the total shareholder return of a selected peer group, was certified by the Executive Compensation Committee of the Board of Directors on February 16, 2026, and issued pursuant to the terms of the grant agreement."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F1","text":"Performance units awarded under the Issuer's Amended and Restated Equity Compensation Plan (2018). The award, including dividend equivalents, vested on February 14, 2026, in an amount equal to 76% of the performance units awarded based upon Issuer's total shareholder return compared to the total shareholder return of a selected peer group, was certified by the Executive Compensation Committee of the Board of Directors on February 16, 2026, and issued pursuant to the terms of the grant agreement."}],"balance_after":0,"derivative":{"underlying":"Common stock, par value $0.01","underlying_shares":3179},"source":{"system":"sec-edgar","filing":"0001193125-26-059424","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1587732/000119312526059424/ownership.xml","form_type":"4"}},{"id":892662,"issuer":{"id":3906,"kind":"organization","name":"ONE Gas, Inc."},"owners":[{"id":65619,"kind":"person","name":"Bender Mark A.","position":1,"cik":"0001657393","reported_name":"Bender Mark A.","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"See Remarks"}}],"security":"Common stock, par value $0.01","published_at":"2026-02-19T21:15:13.000Z","date":"2026-02-14","kind":"tax_withholding","planned":false,"acquired":false,"shares":389.19,"price":86.04,"value":33485.9076,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F2","text":"Restricted units awarded under Issuer's Amended and Restated Equity Compensation Plan (2018). During the 3-year vesting period, the award was credited with dividend equivalents that were paid out in shares of common stock at the time the underlying units vested and were issued. The shares were issued pursuant to the terms of the grant agreement."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"Restricted units awarded under Issuer's Amended and Restated Equity Compensation Plan (2018). During the 3-year vesting period, the award was credited with dividend equivalents that were paid out in shares of common stock at the time the underlying units vested and were issued. The shares were issued pursuant to the terms of the grant agreement."}],"balance_after":29080.769,"source":{"system":"sec-edgar","filing":"0001193125-26-059424","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1587732/000119312526059424/ownership.xml","form_type":"4"}},{"id":892661,"issuer":{"id":3906,"kind":"organization","name":"ONE Gas, Inc."},"owners":[{"id":65619,"kind":"person","name":"Bender Mark A.","position":1,"cik":"0001657393","reported_name":"Bender Mark A.","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"See Remarks"}}],"security":"Common stock, par value $0.01","published_at":"2026-02-19T21:15:13.000Z","date":"2026-02-14","kind":"exercise","planned":false,"acquired":true,"shares":887.56,"price":86.04,"value":76365.6624,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F2","text":"Restricted units awarded under Issuer's Amended and Restated Equity Compensation Plan (2018). During the 3-year vesting period, the award was credited with dividend equivalents that were paid out in shares of common stock at the time the underlying units vested and were issued. The shares were issued pursuant to the terms of the grant agreement."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"Restricted units awarded under Issuer's Amended and Restated Equity Compensation Plan (2018). During the 3-year vesting period, the award was credited with dividend equivalents that were paid out in shares of common stock at the time the underlying units vested and were issued. The shares were issued pursuant to the terms of the grant agreement."}],"balance_after":29469.959,"source":{"system":"sec-edgar","filing":"0001193125-26-059424","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1587732/000119312526059424/ownership.xml","form_type":"4"}},{"id":892660,"issuer":{"id":3906,"kind":"organization","name":"ONE Gas, Inc."},"owners":[{"id":65619,"kind":"person","name":"Bender Mark A.","position":1,"cik":"0001657393","reported_name":"Bender Mark A.","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"See Remarks"}}],"security":"Common stock, par value $0.01","published_at":"2026-02-19T21:15:13.000Z","date":"2026-02-16","kind":"tax_withholding","planned":false,"acquired":false,"shares":1268.172,"price":86.04,"value":109113.51888,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Performance units awarded under the Issuer's Amended and Restated Equity Compensation Plan (2018). The award, including dividend equivalents, vested on February 14, 2026, in an amount equal to 76% of the performance units awarded based upon Issuer's total shareholder return compared to the total shareholder return of a selected peer group, was certified by the Executive Compensation Committee of the Board of Directors on February 16, 2026, and issued pursuant to the terms of the grant agreement."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Performance units awarded under the Issuer's Amended and Restated Equity Compensation Plan (2018). The award, including dividend equivalents, vested on February 14, 2026, in an amount equal to 76% of the performance units awarded based upon Issuer's total shareholder return compared to the total shareholder return of a selected peer group, was certified by the Executive Compensation Committee of the Board of Directors on February 16, 2026, and issued pursuant to the terms of the grant agreement."}],"balance_after":28582.399,"source":{"system":"sec-edgar","filing":"0001193125-26-059424","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1587732/000119312526059424/ownership.xml","form_type":"4"}},{"id":892659,"issuer":{"id":3906,"kind":"organization","name":"ONE Gas, Inc."},"owners":[{"id":65619,"kind":"person","name":"Bender Mark A.","position":1,"cik":"0001657393","reported_name":"Bender Mark A.","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"See Remarks"}}],"security":"Common stock, par value $0.01","published_at":"2026-02-19T21:15:13.000Z","date":"2026-02-16","kind":"exercise","planned":false,"acquired":true,"shares":2697.336,"price":86.04,"value":232078.78944,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Performance units awarded under the Issuer's Amended and Restated Equity Compensation Plan (2018). The award, including dividend equivalents, vested on February 14, 2026, in an amount equal to 76% of the performance units awarded based upon Issuer's total shareholder return compared to the total shareholder return of a selected peer group, was certified by the Executive Compensation Committee of the Board of Directors on February 16, 2026, and issued pursuant to the terms of the grant agreement."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Performance units awarded under the Issuer's Amended and Restated Equity Compensation Plan (2018). The award, including dividend equivalents, vested on February 14, 2026, in an amount equal to 76% of the performance units awarded based upon Issuer's total shareholder return compared to the total shareholder return of a selected peer group, was certified by the Executive Compensation Committee of the Board of Directors on February 16, 2026, and issued pursuant to the terms of the grant agreement."}],"balance_after":29850.571,"source":{"system":"sec-edgar","filing":"0001193125-26-059424","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1587732/000119312526059424/ownership.xml","form_type":"4"}},{"id":893688,"issuer":{"id":3906,"kind":"organization","name":"ONE Gas, Inc."},"owners":[{"id":65684,"kind":"person","name":"Sighinolfi Christopher P.","position":1,"cik":"0002003976","reported_name":"Sighinolfi Christopher P.","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"See Remarks"}}],"security":"Restricted Units 2026","published_at":"2026-02-19T16:15:24.000Z","date":"2026-02-16","kind":"grant","planned":false,"acquired":true,"shares":3719,"price":86.04,"value":319982.76,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F5","text":"Restricted units awarded under the Issuer's Amended and Restated Equity Compensation Plan (2018). The award vests on February 17, 2029, in accordance with the terms of the Restricted Unit Award Agreement."},{"field":"price","element":"transactionPricePerShare","label":"F5","text":"Restricted units awarded under the Issuer's Amended and Restated Equity Compensation Plan (2018). The award vests on February 17, 2029, in accordance with the terms of the Restricted Unit Award Agreement."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F5","text":"Restricted units awarded under the Issuer's Amended and Restated Equity Compensation Plan (2018). The award vests on February 17, 2029, in accordance with the terms of the Restricted Unit Award Agreement."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F5","text":"Restricted units awarded under the Issuer's Amended and Restated Equity Compensation Plan (2018). The award vests on February 17, 2029, in accordance with the terms of the Restricted Unit Award Agreement."}],"balance_after":3719,"derivative":{"underlying":"Common stock, par value $0.01","underlying_shares":3719},"source":{"system":"sec-edgar","filing":"0001193125-26-059428","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":9,"url":"https://www.sec.gov/Archives/edgar/data/2003976/000119312526059428/ownership.xml","form_type":"4"}},{"id":893687,"issuer":{"id":3906,"kind":"organization","name":"ONE Gas, Inc."},"owners":[{"id":65684,"kind":"person","name":"Sighinolfi Christopher P.","position":1,"cik":"0002003976","reported_name":"Sighinolfi Christopher P.","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"See Remarks"}}],"security":"Performance Units 2026","published_at":"2026-02-19T16:15:24.000Z","date":"2026-02-16","kind":"grant","planned":false,"acquired":true,"shares":5579,"price":86.04,"value":480017.16,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F4","text":"Performance units awarded under the Issuer's Amended and Restated Equity Compensation Plan (2018). The award will vest on February 17, 2029, for a percentage (0% to 200%) of the performance units awarded based upon the Issuer's total shareholder return compared to total stockholder return of a selected peer group over the performance period from January 1, 2026, through December 31, 2029, in accordance with the terms of the Performance Unit Award Agreement."},{"field":"price","element":"transactionPricePerShare","label":"F4","text":"Performance units awarded under the Issuer's Amended and Restated Equity Compensation Plan (2018). The award will vest on February 17, 2029, for a percentage (0% to 200%) of the performance units awarded based upon the Issuer's total shareholder return compared to total stockholder return of a selected peer group over the performance period from January 1, 2026, through December 31, 2029, in accordance with the terms of the Performance Unit Award Agreement."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F4","text":"Performance units awarded under the Issuer's Amended and Restated Equity Compensation Plan (2018). The award will vest on February 17, 2029, for a percentage (0% to 200%) of the performance units awarded based upon the Issuer's total shareholder return compared to total stockholder return of a selected peer group over the performance period from January 1, 2026, through December 31, 2029, in accordance with the terms of the Performance Unit Award Agreement."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F4","text":"Performance units awarded under the Issuer's Amended and Restated Equity Compensation Plan (2018). The award will vest on February 17, 2029, for a percentage (0% to 200%) of the performance units awarded based upon the Issuer's total shareholder return compared to total stockholder return of a selected peer group over the performance period from January 1, 2026, through December 31, 2029, in accordance with the terms of the Performance Unit Award Agreement."}],"balance_after":5579,"derivative":{"underlying":"Common stock, par value $0.01","underlying_shares":5579},"source":{"system":"sec-edgar","filing":"0001193125-26-059428","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":8,"url":"https://www.sec.gov/Archives/edgar/data/2003976/000119312526059428/ownership.xml","form_type":"4"}},{"id":893686,"issuer":{"id":3906,"kind":"organization","name":"ONE Gas, Inc."},"owners":[{"id":65684,"kind":"person","name":"Sighinolfi Christopher P.","position":1,"cik":"0002003976","reported_name":"Sighinolfi Christopher P.","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"See Remarks"}}],"security":"Restricted Units 2023","published_at":"2026-02-19T16:15:24.000Z","date":"2026-02-14","kind":"exercise","planned":false,"acquired":false,"shares":535,"price":86.04,"value":46031.4,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F3","text":"Restricted units awarded under Issuer's Amended and Restated Equity Compensation Plan (2018). During the 3-year vesting period, the award was credited with dividend equivalents that were paid out in shares of common stock at the time the underlying units vested and were issued. The shares were issued pursuant to the terms of the grant agreement."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"Restricted units awarded under Issuer's Amended and Restated Equity Compensation Plan (2018). During the 3-year vesting period, the award was credited with dividend equivalents that were paid out in shares of common stock at the time the underlying units vested and were issued. The shares were issued pursuant to the terms of the grant agreement."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"Restricted units awarded under Issuer's Amended and Restated Equity Compensation Plan (2018). During the 3-year vesting period, the award was credited with dividend equivalents that were paid out in shares of common stock at the time the underlying units vested and were issued. The shares were issued pursuant to the terms of the grant agreement."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F3","text":"Restricted units awarded under Issuer's Amended and Restated Equity Compensation Plan (2018). During the 3-year vesting period, the award was credited with dividend equivalents that were paid out in shares of common stock at the time the underlying units vested and were issued. The shares were issued pursuant to the terms of the grant agreement."}],"balance_after":0,"derivative":{"underlying":"Common stock, par value $0.01","underlying_shares":535},"source":{"system":"sec-edgar","filing":"0001193125-26-059428","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":7,"url":"https://www.sec.gov/Archives/edgar/data/2003976/000119312526059428/ownership.xml","form_type":"4"}},{"id":893685,"issuer":{"id":3906,"kind":"organization","name":"ONE Gas, Inc."},"owners":[{"id":65684,"kind":"person","name":"Sighinolfi Christopher P.","position":1,"cik":"0002003976","reported_name":"Sighinolfi Christopher P.","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"See Remarks"}}],"security":"Performance Units 2023","published_at":"2026-02-19T16:15:24.000Z","date":"2026-02-16","kind":"exercise","planned":false,"acquired":false,"shares":1605,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Performance units awarded under the Issuer's Amended and Restated Equity Compensation Plan (2018) (the \"ECP\"). The award, including dividend equivalents, vested on February 14, 2026, in an amount equal to 76% of the performance units awarded based upon Issuer's total shareholder return compared to the total shareholder return of a selected peer group, was certified by the Executive Compensation Committee of the Board of Directors on February 16, 2026, and issued pursuant to the terms of the grant agreement.  The reporting person's receipt of 1,361.820 shares of common stock was deferred resulting in the reporting person's receipt of 1,361.820 deferred stock units. The deferred stock units become payable in shares of common stock after the reporting person's termination of service, pursuant to the reporting person's distribution election."},{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"(Continued from footnote 1) The reporting person is therefore reporting the disposition of 1,361.820 shares of common stock in exchange for an equal number of deferred stock units. The reporting person had 61.527 shares withheld and cancelled in respect of taxes in connection with the vesting of the performance units."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Performance units awarded under the Issuer's Amended and Restated Equity Compensation Plan (2018) (the \"ECP\"). The award, including dividend equivalents, vested on February 14, 2026, in an amount equal to 76% of the performance units awarded based upon Issuer's total shareholder return compared to the total shareholder return of a selected peer group, was certified by the Executive Compensation Committee of the Board of Directors on February 16, 2026, and issued pursuant to the terms of the grant agreement.  The reporting person's receipt of 1,361.820 shares of common stock was deferred resulting in the reporting person's receipt of 1,361.820 deferred stock units. The deferred stock units become payable in shares of common stock after the reporting person's termination of service, pursuant to the reporting person's distribution election."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"(Continued from footnote 1) The reporting person is therefore reporting the disposition of 1,361.820 shares of common stock in exchange for an equal number of deferred stock units. The reporting person had 61.527 shares withheld and cancelled in respect of taxes in connection with the vesting of the performance units."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"Performance units awarded under the Issuer's Amended and Restated Equity Compensation Plan (2018) (the \"ECP\"). The award, including dividend equivalents, vested on February 14, 2026, in an amount equal to 76% of the performance units awarded based upon Issuer's total shareholder return compared to the total shareholder return of a selected peer group, was certified by the Executive Compensation Committee of the Board of Directors on February 16, 2026, and issued pursuant to the terms of the grant agreement.  The reporting person's receipt of 1,361.820 shares of common stock was deferred resulting in the reporting person's receipt of 1,361.820 deferred stock units. The deferred stock units become payable in shares of common stock after the reporting person's termination of service, pursuant to the reporting person's distribution election."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"(Continued from footnote 1) The reporting person is therefore reporting the disposition of 1,361.820 shares of common stock in exchange for an equal number of deferred stock units. The reporting person had 61.527 shares withheld and cancelled in respect of taxes in connection with the vesting of the performance units."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F1","text":"Performance units awarded under the Issuer's Amended and Restated Equity Compensation Plan (2018) (the \"ECP\"). The award, including dividend equivalents, vested on February 14, 2026, in an amount equal to 76% of the performance units awarded based upon Issuer's total shareholder return compared to the total shareholder return of a selected peer group, was certified by the Executive Compensation Committee of the Board of Directors on February 16, 2026, and issued pursuant to the terms of the grant agreement.  The reporting person's receipt of 1,361.820 shares of common stock was deferred resulting in the reporting person's receipt of 1,361.820 deferred stock units. The deferred stock units become payable in shares of common stock after the reporting person's termination of service, pursuant to the reporting person's distribution election."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"(Continued from footnote 1) The reporting person is therefore reporting the disposition of 1,361.820 shares of common stock in exchange for an equal number of deferred stock units. The reporting person had 61.527 shares withheld and cancelled in respect of taxes in connection with the vesting of the performance units."}],"balance_after":0,"derivative":{"underlying":"Common stock, par value $0.01","underlying_shares":1605},"source":{"system":"sec-edgar","filing":"0001193125-26-059428","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/2003976/000119312526059428/ownership.xml","form_type":"4"}},{"id":893684,"issuer":{"id":3906,"kind":"organization","name":"ONE Gas, Inc."},"owners":[{"id":65684,"kind":"person","name":"Sighinolfi Christopher P.","position":1,"cik":"0002003976","reported_name":"Sighinolfi Christopher P.","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"See Remarks"}}],"security":"Common stock, par value $0.01","published_at":"2026-02-19T16:15:24.000Z","date":"2026-02-14","kind":"tax_withholding","planned":false,"acquired":false,"shares":203.979,"price":86.04,"value":17550.35316,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F3","text":"Restricted units awarded under Issuer's Amended and Restated Equity Compensation Plan (2018). During the 3-year vesting period, the award was credited with dividend equivalents that were paid out in shares of common stock at the time the underlying units vested and were issued. The shares were issued pursuant to the terms of the grant agreement."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"Restricted units awarded under Issuer's Amended and Restated Equity Compensation Plan (2018). During the 3-year vesting period, the award was credited with dividend equivalents that were paid out in shares of common stock at the time the underlying units vested and were issued. The shares were issued pursuant to the terms of the grant agreement."}],"balance_after":4518.114,"source":{"system":"sec-edgar","filing":"0001193125-26-059428","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/2003976/000119312526059428/ownership.xml","form_type":"4"}},{"id":893683,"issuer":{"id":3906,"kind":"organization","name":"ONE Gas, Inc."},"owners":[{"id":65684,"kind":"person","name":"Sighinolfi Christopher P.","position":1,"cik":"0002003976","reported_name":"Sighinolfi Christopher P.","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"See Remarks"}}],"security":"Common stock, par value $0.01","published_at":"2026-02-19T16:15:24.000Z","date":"2026-02-14","kind":"exercise","planned":false,"acquired":true,"shares":597.288,"price":86.04,"value":51390.65952,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F3","text":"Restricted units awarded under Issuer's Amended and Restated Equity Compensation Plan (2018). During the 3-year vesting period, the award was credited with dividend equivalents that were paid out in shares of common stock at the time the underlying units vested and were issued. The shares were issued pursuant to the terms of the grant agreement."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"Restricted units awarded under Issuer's Amended and Restated Equity Compensation Plan (2018). During the 3-year vesting period, the award was credited with dividend equivalents that were paid out in shares of common stock at the time the underlying units vested and were issued. The shares were issued pursuant to the terms of the grant agreement."}],"balance_after":4722.093,"source":{"system":"sec-edgar","filing":"0001193125-26-059428","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/2003976/000119312526059428/ownership.xml","form_type":"4"}},{"id":893682,"issuer":{"id":3906,"kind":"organization","name":"ONE Gas, Inc."},"owners":[{"id":65684,"kind":"person","name":"Sighinolfi Christopher P.","position":1,"cik":"0002003976","reported_name":"Sighinolfi Christopher P.","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"See Remarks"}}],"security":"Common stock, par value $0.01","published_at":"2026-02-19T16:15:24.000Z","date":"2026-02-16","kind":"tax_withholding","planned":false,"acquired":false,"shares":61.527,"price":86.04,"value":5293.78308,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Performance units awarded under the Issuer's Amended and Restated Equity Compensation Plan (2018) (the \"ECP\"). The award, including dividend equivalents, vested on February 14, 2026, in an amount equal to 76% of the performance units awarded based upon Issuer's total shareholder return compared to the total shareholder return of a selected peer group, was certified by the Executive Compensation Committee of the Board of Directors on February 16, 2026, and issued pursuant to the terms of the grant agreement.  The reporting person's receipt of 1,361.820 shares of common stock was deferred resulting in the reporting person's receipt of 1,361.820 deferred stock units. The deferred stock units become payable in shares of common stock after the reporting person's termination of service, pursuant to the reporting person's distribution election."},{"field":"shares","element":"transactionShares","label":"F2","text":"(Continued from footnote 1) The reporting person is therefore reporting the disposition of 1,361.820 shares of common stock in exchange for an equal number of deferred stock units. The reporting person had 61.527 shares withheld and cancelled in respect of taxes in connection with the vesting of the performance units."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Performance units awarded under the Issuer's Amended and Restated Equity Compensation Plan (2018) (the \"ECP\"). The award, including dividend equivalents, vested on February 14, 2026, in an amount equal to 76% of the performance units awarded based upon Issuer's total shareholder return compared to the total shareholder return of a selected peer group, was certified by the Executive Compensation Committee of the Board of Directors on February 16, 2026, and issued pursuant to the terms of the grant agreement.  The reporting person's receipt of 1,361.820 shares of common stock was deferred resulting in the reporting person's receipt of 1,361.820 deferred stock units. The deferred stock units become payable in shares of common stock after the reporting person's termination of service, pursuant to the reporting person's distribution election."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"(Continued from footnote 1) The reporting person is therefore reporting the disposition of 1,361.820 shares of common stock in exchange for an equal number of deferred stock units. The reporting person had 61.527 shares withheld and cancelled in respect of taxes in connection with the vesting of the performance units."}],"balance_after":4124.805,"source":{"system":"sec-edgar","filing":"0001193125-26-059428","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/2003976/000119312526059428/ownership.xml","form_type":"4"}},{"id":893681,"issuer":{"id":3906,"kind":"organization","name":"ONE Gas, Inc."},"owners":[{"id":65684,"kind":"person","name":"Sighinolfi Christopher P.","position":1,"cik":"0002003976","reported_name":"Sighinolfi Christopher P.","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"See Remarks"}}],"security":"Common stock, par value $0.01","published_at":"2026-02-19T16:15:24.000Z","date":"2026-02-16","kind":"exercise","planned":false,"acquired":true,"shares":1361.82,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Performance units awarded under the Issuer's Amended and Restated Equity Compensation Plan (2018) (the \"ECP\"). The award, including dividend equivalents, vested on February 14, 2026, in an amount equal to 76% of the performance units awarded based upon Issuer's total shareholder return compared to the total shareholder return of a selected peer group, was certified by the Executive Compensation Committee of the Board of Directors on February 16, 2026, and issued pursuant to the terms of the grant agreement.  The reporting person's receipt of 1,361.820 shares of common stock was deferred resulting in the reporting person's receipt of 1,361.820 deferred stock units. The deferred stock units become payable in shares of common stock after the reporting person's termination of service, pursuant to the reporting person's distribution election."},{"field":"shares","element":"transactionShares","label":"F2","text":"(Continued from footnote 1) The reporting person is therefore reporting the disposition of 1,361.820 shares of common stock in exchange for an equal number of deferred stock units. The reporting person had 61.527 shares withheld and cancelled in respect of taxes in connection with the vesting of the performance units."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Performance units awarded under the Issuer's Amended and Restated Equity Compensation Plan (2018) (the \"ECP\"). The award, including dividend equivalents, vested on February 14, 2026, in an amount equal to 76% of the performance units awarded based upon Issuer's total shareholder return compared to the total shareholder return of a selected peer group, was certified by the Executive Compensation Committee of the Board of Directors on February 16, 2026, and issued pursuant to the terms of the grant agreement.  The reporting person's receipt of 1,361.820 shares of common stock was deferred resulting in the reporting person's receipt of 1,361.820 deferred stock units. The deferred stock units become payable in shares of common stock after the reporting person's termination of service, pursuant to the reporting person's distribution election."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"(Continued from footnote 1) The reporting person is therefore reporting the disposition of 1,361.820 shares of common stock in exchange for an equal number of deferred stock units. The reporting person had 61.527 shares withheld and cancelled in respect of taxes in connection with the vesting of the performance units."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"Performance units awarded under the Issuer's Amended and Restated Equity Compensation Plan (2018) (the \"ECP\"). The award, including dividend equivalents, vested on February 14, 2026, in an amount equal to 76% of the performance units awarded based upon Issuer's total shareholder return compared to the total shareholder return of a selected peer group, was certified by the Executive Compensation Committee of the Board of Directors on February 16, 2026, and issued pursuant to the terms of the grant agreement.  The reporting person's receipt of 1,361.820 shares of common stock was deferred resulting in the reporting person's receipt of 1,361.820 deferred stock units. The deferred stock units become payable in shares of common stock after the reporting person's termination of service, pursuant to the reporting person's distribution election."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"(Continued from footnote 1) The reporting person is therefore reporting the disposition of 1,361.820 shares of common stock in exchange for an equal number of deferred stock units. The reporting person had 61.527 shares withheld and cancelled in respect of taxes in connection with the vesting of the performance units."}],"balance_after":4186.332,"source":{"system":"sec-edgar","filing":"0001193125-26-059428","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/2003976/000119312526059428/ownership.xml","form_type":"4"}},{"id":892999,"issuer":{"id":3906,"kind":"organization","name":"ONE Gas, Inc."},"owners":[{"id":65643,"kind":"person","name":"DINAN CURTIS","position":1,"cik":"0001278745","reported_name":"DINAN CURTIS","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"See Remarks"}}],"security":"Restricted Units 2026","published_at":"2026-02-19T16:15:12.000Z","date":"2026-02-16","kind":"grant","planned":false,"acquired":true,"shares":4649,"price":86.04,"value":399999.96,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F4","text":"Restricted units awarded under the Issuer's Amended and Restated Equity Compensation Plan (2018). The award vests on February 17, 2029, in accordance with the terms of the Restricted Unit Award Agreement."},{"field":"price","element":"transactionPricePerShare","label":"F4","text":"Restricted units awarded under the Issuer's Amended and Restated Equity Compensation Plan (2018). The award vests on February 17, 2029, in accordance with the terms of the Restricted Unit Award Agreement."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F4","text":"Restricted units awarded under the Issuer's Amended and Restated Equity Compensation Plan (2018). The award vests on February 17, 2029, in accordance with the terms of the Restricted Unit Award Agreement."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F4","text":"Restricted units awarded under the Issuer's Amended and Restated Equity Compensation Plan (2018). The award vests on February 17, 2029, in accordance with the terms of the Restricted Unit Award Agreement."}],"balance_after":4649,"derivative":{"underlying":"Common stock, par value $0.01","underlying_shares":4649},"source":{"system":"sec-edgar","filing":"0001193125-26-059415","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":9,"url":"https://www.sec.gov/Archives/edgar/data/1278745/000119312526059415/ownership.xml","form_type":"4"}},{"id":892998,"issuer":{"id":3906,"kind":"organization","name":"ONE Gas, Inc."},"owners":[{"id":65643,"kind":"person","name":"DINAN CURTIS","position":1,"cik":"0001278745","reported_name":"DINAN CURTIS","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"See Remarks"}}],"security":"Performance Units 2026","published_at":"2026-02-19T16:15:12.000Z","date":"2026-02-16","kind":"grant","planned":false,"acquired":true,"shares":6974,"price":86.04,"value":600042.96,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F3","text":"Performance units awarded under the Issuer's Amended and Restated Equity Compensation Plan (2018). The award will vest on February 17, 2029, for a percentage (0% to 200%) of the performance units awarded based upon the Issuer's total shareholder return compared to total stockholder return of a selected peer group over the performance period from January 1, 2026, through December 31, 2029, in accordance with the terms of the Performance Unit Award Agreement."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"Performance units awarded under the Issuer's Amended and Restated Equity Compensation Plan (2018). The award will vest on February 17, 2029, for a percentage (0% to 200%) of the performance units awarded based upon the Issuer's total shareholder return compared to total stockholder return of a selected peer group over the performance period from January 1, 2026, through December 31, 2029, in accordance with the terms of the Performance Unit Award Agreement."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"Performance units awarded under the Issuer's Amended and Restated Equity Compensation Plan (2018). The award will vest on February 17, 2029, for a percentage (0% to 200%) of the performance units awarded based upon the Issuer's total shareholder return compared to total stockholder return of a selected peer group over the performance period from January 1, 2026, through December 31, 2029, in accordance with the terms of the Performance Unit Award Agreement."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F3","text":"Performance units awarded under the Issuer's Amended and Restated Equity Compensation Plan (2018). The award will vest on February 17, 2029, for a percentage (0% to 200%) of the performance units awarded based upon the Issuer's total shareholder return compared to total stockholder return of a selected peer group over the performance period from January 1, 2026, through December 31, 2029, in accordance with the terms of the Performance Unit Award Agreement."}],"balance_after":6974,"derivative":{"underlying":"Common stock, par value $0.01","underlying_shares":6974},"source":{"system":"sec-edgar","filing":"0001193125-26-059415","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":8,"url":"https://www.sec.gov/Archives/edgar/data/1278745/000119312526059415/ownership.xml","form_type":"4"}},{"id":892997,"issuer":{"id":3906,"kind":"organization","name":"ONE Gas, Inc."},"owners":[{"id":65643,"kind":"person","name":"DINAN CURTIS","position":1,"cik":"0001278745","reported_name":"DINAN CURTIS","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"See Remarks"}}],"security":"Restricted Units 2023","published_at":"2026-02-19T16:15:12.000Z","date":"2026-02-14","kind":"exercise","planned":false,"acquired":false,"shares":1589,"price":86.04,"value":136717.56,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"Restricted units awarded under Issuer's Amended and Restated Equity Compensation Plan (2018). During the 3-year vesting period, the award was credited with dividend equivalents that were paid out in shares of common stock at the time the underlying units vested and were issued. The shares were issued pursuant to the terms of the grant agreement."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"Restricted units awarded under Issuer's Amended and Restated Equity Compensation Plan (2018). During the 3-year vesting period, the award was credited with dividend equivalents that were paid out in shares of common stock at the time the underlying units vested and were issued. The shares were issued pursuant to the terms of the grant agreement."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"Restricted units awarded under Issuer's Amended and Restated Equity Compensation Plan (2018). During the 3-year vesting period, the award was credited with dividend equivalents that were paid out in shares of common stock at the time the underlying units vested and were issued. The shares were issued pursuant to the terms of the grant agreement."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"Restricted units awarded under Issuer's Amended and Restated Equity Compensation Plan (2018). During the 3-year vesting period, the award was credited with dividend equivalents that were paid out in shares of common stock at the time the underlying units vested and were issued. The shares were issued pursuant to the terms of the grant agreement."}],"balance_after":0,"derivative":{"underlying":"Common stock, par value $0.01","underlying_shares":1589},"source":{"system":"sec-edgar","filing":"0001193125-26-059415","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":7,"url":"https://www.sec.gov/Archives/edgar/data/1278745/000119312526059415/ownership.xml","form_type":"4"}},{"id":892996,"issuer":{"id":3906,"kind":"organization","name":"ONE Gas, Inc."},"owners":[{"id":65643,"kind":"person","name":"DINAN CURTIS","position":1,"cik":"0001278745","reported_name":"DINAN CURTIS","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"See Remarks"}}],"security":"Performance Units 2023","published_at":"2026-02-19T16:15:12.000Z","date":"2026-02-16","kind":"exercise","planned":false,"acquired":false,"shares":6358,"price":86.04,"value":547042.32,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Performance units awarded under the Issuer's Amended and Restated Equity Compensation Plan (2018). The award, including dividend equivalents, vested on February 14, 2026, in an amount equal to 76% of the performance units awarded based upon Issuer's total shareholder return compared to the total shareholder return of a selected peer group, was certified by the Executive Compensation Committee of the Board of Directors on February 16, 2026, and issued pursuant to the terms of the grant agreement."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Performance units awarded under the Issuer's Amended and Restated Equity Compensation Plan (2018). The award, including dividend equivalents, vested on February 14, 2026, in an amount equal to 76% of the performance units awarded based upon Issuer's total shareholder return compared to the total shareholder return of a selected peer group, was certified by the Executive Compensation Committee of the Board of Directors on February 16, 2026, and issued pursuant to the terms of the grant agreement."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"Performance units awarded under the Issuer's Amended and Restated Equity Compensation Plan (2018). The award, including dividend equivalents, vested on February 14, 2026, in an amount equal to 76% of the performance units awarded based upon Issuer's total shareholder return compared to the total shareholder return of a selected peer group, was certified by the Executive Compensation Committee of the Board of Directors on February 16, 2026, and issued pursuant to the terms of the grant agreement."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F1","text":"Performance units awarded under the Issuer's Amended and Restated Equity Compensation Plan (2018). The award, including dividend equivalents, vested on February 14, 2026, in an amount equal to 76% of the performance units awarded based upon Issuer's total shareholder return compared to the total shareholder return of a selected peer group, was certified by the Executive Compensation Committee of the Board of Directors on February 16, 2026, and issued pursuant to the terms of the grant agreement."}],"balance_after":0,"derivative":{"underlying":"Common stock, par value $0.01","underlying_shares":6358},"source":{"system":"sec-edgar","filing":"0001193125-26-059415","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/1278745/000119312526059415/ownership.xml","form_type":"4"}},{"id":892995,"issuer":{"id":3906,"kind":"organization","name":"ONE Gas, Inc."},"owners":[{"id":65643,"kind":"person","name":"DINAN CURTIS","position":1,"cik":"0001278745","reported_name":"DINAN CURTIS","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"See Remarks"}}],"security":"Common stock, par value $0.01","published_at":"2026-02-19T16:15:12.000Z","date":"2026-02-14","kind":"tax_withholding","planned":false,"acquired":false,"shares":777.906,"price":86.04,"value":66931.03224,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F2","text":"Restricted units awarded under Issuer's Amended and Restated Equity Compensation Plan (2018). During the 3-year vesting period, the award was credited with dividend equivalents that were paid out in shares of common stock at the time the underlying units vested and were issued. The shares were issued pursuant to the terms of the grant agreement."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"Restricted units awarded under Issuer's Amended and Restated Equity Compensation Plan (2018). During the 3-year vesting period, the award was credited with dividend equivalents that were paid out in shares of common stock at the time the underlying units vested and were issued. The shares were issued pursuant to the terms of the grant agreement."}],"balance_after":142259.427,"source":{"system":"sec-edgar","filing":"0001193125-26-059415","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1278745/000119312526059415/ownership.xml","form_type":"4"}},{"id":892994,"issuer":{"id":3906,"kind":"organization","name":"ONE Gas, Inc."},"owners":[{"id":65643,"kind":"person","name":"DINAN CURTIS","position":1,"cik":"0001278745","reported_name":"DINAN CURTIS","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"See Remarks"}}],"security":"Common stock, par value $0.01","published_at":"2026-02-19T16:15:12.000Z","date":"2026-02-14","kind":"exercise","planned":false,"acquired":true,"shares":1774.005,"price":86.04,"value":152635.3902,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F2","text":"Restricted units awarded under Issuer's Amended and Restated Equity Compensation Plan (2018). During the 3-year vesting period, the award was credited with dividend equivalents that were paid out in shares of common stock at the time the underlying units vested and were issued. The shares were issued pursuant to the terms of the grant agreement."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"Restricted units awarded under Issuer's Amended and Restated Equity Compensation Plan (2018). During the 3-year vesting period, the award was credited with dividend equivalents that were paid out in shares of common stock at the time the underlying units vested and were issued. The shares were issued pursuant to the terms of the grant agreement."}],"balance_after":143037.333,"source":{"system":"sec-edgar","filing":"0001193125-26-059415","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1278745/000119312526059415/ownership.xml","form_type":"4"}},{"id":892993,"issuer":{"id":3906,"kind":"organization","name":"ONE Gas, Inc."},"owners":[{"id":65643,"kind":"person","name":"DINAN CURTIS","position":1,"cik":"0001278745","reported_name":"DINAN CURTIS","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"See Remarks"}}],"security":"Common stock, par value $0.01","published_at":"2026-02-19T16:15:12.000Z","date":"2026-02-16","kind":"tax_withholding","planned":false,"acquired":false,"shares":2437.54,"price":86.04,"value":209725.9416,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Performance units awarded under the Issuer's Amended and Restated Equity Compensation Plan (2018). The award, including dividend equivalents, vested on February 14, 2026, in an amount equal to 76% of the performance units awarded based upon Issuer's total shareholder return compared to the total shareholder return of a selected peer group, was certified by the Executive Compensation Committee of the Board of Directors on February 16, 2026, and issued pursuant to the terms of the grant agreement."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Performance units awarded under the Issuer's Amended and Restated Equity Compensation Plan (2018). The award, including dividend equivalents, vested on February 14, 2026, in an amount equal to 76% of the performance units awarded based upon Issuer's total shareholder return compared to the total shareholder return of a selected peer group, was certified by the Executive Compensation Committee of the Board of Directors on February 16, 2026, and issued pursuant to the terms of the grant agreement."}],"balance_after":141263.328,"source":{"system":"sec-edgar","filing":"0001193125-26-059415","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1278745/000119312526059415/ownership.xml","form_type":"4"}},{"id":892992,"issuer":{"id":3906,"kind":"organization","name":"ONE Gas, Inc."},"owners":[{"id":65643,"kind":"person","name":"DINAN CURTIS","position":1,"cik":"0001278745","reported_name":"DINAN CURTIS","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"See Remarks"}}],"security":"Common stock, par value $0.01","published_at":"2026-02-19T16:15:12.000Z","date":"2026-02-16","kind":"exercise","planned":false,"acquired":true,"shares":5394.671,"price":86.04,"value":464157.49284,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Performance units awarded under the Issuer's Amended and Restated Equity Compensation Plan (2018). The award, including dividend equivalents, vested on February 14, 2026, in an amount equal to 76% of the performance units awarded based upon Issuer's total shareholder return compared to the total shareholder return of a selected peer group, was certified by the Executive Compensation Committee of the Board of Directors on February 16, 2026, and issued pursuant to the terms of the grant agreement."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Performance units awarded under the Issuer's Amended and Restated Equity Compensation Plan (2018). The award, including dividend equivalents, vested on February 14, 2026, in an amount equal to 76% of the performance units awarded based upon Issuer's total shareholder return compared to the total shareholder return of a selected peer group, was certified by the Executive Compensation Committee of the Board of Directors on February 16, 2026, and issued pursuant to the terms of the grant agreement."}],"balance_after":143700.868,"source":{"system":"sec-edgar","filing":"0001193125-26-059415","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1278745/000119312526059415/ownership.xml","form_type":"4"}},{"id":893341,"issuer":{"id":3906,"kind":"organization","name":"ONE Gas, Inc."},"owners":[{"id":65662,"kind":"person","name":"McAnnally Robert S.","position":1,"cik":"0001636734","reported_name":"McAnnally Robert S.","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"See Remarks"}}],"security":"Restricted Units 2026","published_at":"2026-02-19T16:15:07.000Z","date":"2026-02-16","kind":"grant","planned":false,"acquired":true,"shares":11158,"price":86.04,"value":960034.32,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F4","text":"Restricted units awarded under the Issuer's Amended and Restated Equity Compensation Plan (2018). The award vests on February 17, 2029, in accordance with the terms of the Restricted Unit Award Agreement."},{"field":"price","element":"transactionPricePerShare","label":"F4","text":"Restricted units awarded under the Issuer's Amended and Restated Equity Compensation Plan (2018). The award vests on February 17, 2029, in accordance with the terms of the Restricted Unit Award Agreement."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F4","text":"Restricted units awarded under the Issuer's Amended and Restated Equity Compensation Plan (2018). The award vests on February 17, 2029, in accordance with the terms of the Restricted Unit Award Agreement."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F4","text":"Restricted units awarded under the Issuer's Amended and Restated Equity Compensation Plan (2018). The award vests on February 17, 2029, in accordance with the terms of the Restricted Unit Award Agreement."}],"balance_after":11158,"derivative":{"underlying":"Common stock, par value $0.01","underlying_shares":11158},"source":{"system":"sec-edgar","filing":"0001193125-26-059412","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":8,"url":"https://www.sec.gov/Archives/edgar/data/1636734/000119312526059412/ownership.xml","form_type":"4"}},{"id":893340,"issuer":{"id":3906,"kind":"organization","name":"ONE Gas, Inc."},"owners":[{"id":65662,"kind":"person","name":"McAnnally Robert S.","position":1,"cik":"0001636734","reported_name":"McAnnally Robert S.","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"See Remarks"}}],"security":"Performance Units 2026","published_at":"2026-02-19T16:15:07.000Z","date":"2026-02-16","kind":"grant","planned":false,"acquired":true,"shares":26034,"price":86.04,"value":2239965.36,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F3","text":"Performance units awarded under the Issuer's Amended and Restated Equity Compensation Plan (2018). The award will vest on February 17, 2029, for a percentage (0% to 200%) of the performance units awarded based upon the Issuer's total shareholder return compared to total stockholder return of a selected peer group over the performance period from January 1, 2026, through December 31, 2029, in accordance with the terms of the Performance Unit Award Agreement."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"Performance units awarded under the Issuer's Amended and Restated Equity Compensation Plan (2018). The award will vest on February 17, 2029, for a percentage (0% to 200%) of the performance units awarded based upon the Issuer's total shareholder return compared to total stockholder return of a selected peer group over the performance period from January 1, 2026, through December 31, 2029, in accordance with the terms of the Performance Unit Award Agreement."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"Performance units awarded under the Issuer's Amended and Restated Equity Compensation Plan (2018). The award will vest on February 17, 2029, for a percentage (0% to 200%) of the performance units awarded based upon the Issuer's total shareholder return compared to total stockholder return of a selected peer group over the performance period from January 1, 2026, through December 31, 2029, in accordance with the terms of the Performance Unit Award Agreement."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F3","text":"Performance units awarded under the Issuer's Amended and Restated Equity Compensation Plan (2018). The award will vest on February 17, 2029, for a percentage (0% to 200%) of the performance units awarded based upon the Issuer's total shareholder return compared to total stockholder return of a selected peer group over the performance period from January 1, 2026, through December 31, 2029, in accordance with the terms of the Performance Unit Award Agreement."}],"balance_after":26034,"derivative":{"underlying":"Common stock, par value $0.01","underlying_shares":26034},"source":{"system":"sec-edgar","filing":"0001193125-26-059412","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":7,"url":"https://www.sec.gov/Archives/edgar/data/1636734/000119312526059412/ownership.xml","form_type":"4"}},{"id":893339,"issuer":{"id":3906,"kind":"organization","name":"ONE Gas, Inc."},"owners":[{"id":65662,"kind":"person","name":"McAnnally Robert S.","position":1,"cik":"0001636734","reported_name":"McAnnally Robert S.","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"See Remarks"}}],"security":"Restricted Units 2023","published_at":"2026-02-19T16:15:07.000Z","date":"2026-02-14","kind":"exercise","planned":false,"acquired":false,"shares":5624,"price":86.04,"value":483888.96,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"Restricted units awarded under Issuer's Amended and Restated Equity Compensation Plan (2018). During the 3-year vesting period, the award was credited with dividend equivalents that were paid out in shares of common stock at the time the underlying units vested and were issued. The shares were issued pursuant to the terms of the grant agreement."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"Restricted units awarded under Issuer's Amended and Restated Equity Compensation Plan (2018). During the 3-year vesting period, the award was credited with dividend equivalents that were paid out in shares of common stock at the time the underlying units vested and were issued. The shares were issued pursuant to the terms of the grant agreement."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"Restricted units awarded under Issuer's Amended and Restated Equity Compensation Plan (2018). During the 3-year vesting period, the award was credited with dividend equivalents that were paid out in shares of common stock at the time the underlying units vested and were issued. The shares were issued pursuant to the terms of the grant agreement."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"Restricted units awarded under Issuer's Amended and Restated Equity Compensation Plan (2018). During the 3-year vesting period, the award was credited with dividend equivalents that were paid out in shares of common stock at the time the underlying units vested and were issued. The shares were issued pursuant to the terms of the grant agreement."}],"balance_after":0,"derivative":{"underlying":"Common stock, par value $0.01","underlying_shares":5624},"source":{"system":"sec-edgar","filing":"0001193125-26-059412","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/1636734/000119312526059412/ownership.xml","form_type":"4"}},{"id":893338,"issuer":{"id":3906,"kind":"organization","name":"ONE Gas, Inc."},"owners":[{"id":65662,"kind":"person","name":"McAnnally Robert S.","position":1,"cik":"0001636734","reported_name":"McAnnally Robert S.","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"See Remarks"}}],"security":"Performance Units 2023","published_at":"2026-02-19T16:15:07.000Z","date":"2026-02-16","kind":"exercise","planned":false,"acquired":false,"shares":22497,"price":86.04,"value":1935641.88,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Performance units awarded under the Issuer's Amended and Restated Equity Compensation Plan (2018). The award, including dividend equivalents, vested on February 14, 2026, in an amount equal to 76% of the performance units awarded based upon Issuer's total shareholder return compared to the total shareholder return of a selected peer group, was certified by the Executive Compensation Committee of the Board of Directors on February 16, 2026, and issued pursuant to the terms of the grant agreement."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Performance units awarded under the Issuer's Amended and Restated Equity Compensation Plan (2018). The award, including dividend equivalents, vested on February 14, 2026, in an amount equal to 76% of the performance units awarded based upon Issuer's total shareholder return compared to the total shareholder return of a selected peer group, was certified by the Executive Compensation Committee of the Board of Directors on February 16, 2026, and issued pursuant to the terms of the grant agreement."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"Performance units awarded under the Issuer's Amended and Restated Equity Compensation Plan (2018). The award, including dividend equivalents, vested on February 14, 2026, in an amount equal to 76% of the performance units awarded based upon Issuer's total shareholder return compared to the total shareholder return of a selected peer group, was certified by the Executive Compensation Committee of the Board of Directors on February 16, 2026, and issued pursuant to the terms of the grant agreement."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F1","text":"Performance units awarded under the Issuer's Amended and Restated Equity Compensation Plan (2018). The award, including dividend equivalents, vested on February 14, 2026, in an amount equal to 76% of the performance units awarded based upon Issuer's total shareholder return compared to the total shareholder return of a selected peer group, was certified by the Executive Compensation Committee of the Board of Directors on February 16, 2026, and issued pursuant to the terms of the grant agreement."}],"balance_after":0,"derivative":{"underlying":"Common stock, par value $0.01","underlying_shares":22497},"source":{"system":"sec-edgar","filing":"0001193125-26-059412","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1636734/000119312526059412/ownership.xml","form_type":"4"}},{"id":893337,"issuer":{"id":3906,"kind":"organization","name":"ONE Gas, Inc."},"owners":[{"id":65662,"kind":"person","name":"McAnnally Robert S.","position":1,"cik":"0001636734","reported_name":"McAnnally Robert S.","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"See Remarks"}}],"security":"Common stock, par value $0.01","published_at":"2026-02-19T16:15:07.000Z","date":"2026-02-14","kind":"tax_withholding","planned":false,"acquired":false,"shares":2753.249,"price":86.04,"value":236889.54396,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F2","text":"Restricted units awarded under Issuer's Amended and Restated Equity Compensation Plan (2018). During the 3-year vesting period, the award was credited with dividend equivalents that were paid out in shares of common stock at the time the underlying units vested and were issued. The shares were issued pursuant to the terms of the grant agreement."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"Restricted units awarded under Issuer's Amended and Restated Equity Compensation Plan (2018). During the 3-year vesting period, the award was credited with dividend equivalents that were paid out in shares of common stock at the time the underlying units vested and were issued. The shares were issued pursuant to the terms of the grant agreement."}],"balance_after":59530.166,"source":{"system":"sec-edgar","filing":"0001193125-26-059412","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1636734/000119312526059412/ownership.xml","form_type":"4"}},{"id":893336,"issuer":{"id":3906,"kind":"organization","name":"ONE Gas, Inc."},"owners":[{"id":65662,"kind":"person","name":"McAnnally Robert S.","position":1,"cik":"0001636734","reported_name":"McAnnally Robert S.","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"See Remarks"}}],"security":"Common stock, par value $0.01","published_at":"2026-02-19T16:15:07.000Z","date":"2026-02-14","kind":"exercise","planned":false,"acquired":true,"shares":6278.793,"price":86.04,"value":540227.34972,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F2","text":"Restricted units awarded under Issuer's Amended and Restated Equity Compensation Plan (2018). During the 3-year vesting period, the award was credited with dividend equivalents that were paid out in shares of common stock at the time the underlying units vested and were issued. The shares were issued pursuant to the terms of the grant agreement."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"Restricted units awarded under Issuer's Amended and Restated Equity Compensation Plan (2018). During the 3-year vesting period, the award was credited with dividend equivalents that were paid out in shares of common stock at the time the underlying units vested and were issued. The shares were issued pursuant to the terms of the grant agreement."}],"balance_after":62283.415,"source":{"system":"sec-edgar","filing":"0001193125-26-059412","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1636734/000119312526059412/ownership.xml","form_type":"4"}},{"id":893335,"issuer":{"id":3906,"kind":"organization","name":"ONE Gas, Inc."},"owners":[{"id":65662,"kind":"person","name":"McAnnally Robert S.","position":1,"cik":"0001636734","reported_name":"McAnnally Robert S.","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"See Remarks"}}],"security":"Common stock, par value $0.01","published_at":"2026-02-19T16:15:07.000Z","date":"2026-02-16","kind":"tax_withholding","planned":false,"acquired":false,"shares":8410.289,"price":86.04,"value":723621.26556,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Performance units awarded under the Issuer's Amended and Restated Equity Compensation Plan (2018). The award, including dividend equivalents, vested on February 14, 2026, in an amount equal to 76% of the performance units awarded based upon Issuer's total shareholder return compared to the total shareholder return of a selected peer group, was certified by the Executive Compensation Committee of the Board of Directors on February 16, 2026, and issued pursuant to the terms of the grant agreement."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Performance units awarded under the Issuer's Amended and Restated Equity Compensation Plan (2018). The award, including dividend equivalents, vested on February 14, 2026, in an amount equal to 76% of the performance units awarded based upon Issuer's total shareholder return compared to the total shareholder return of a selected peer group, was certified by the Executive Compensation Committee of the Board of Directors on February 16, 2026, and issued pursuant to the terms of the grant agreement."}],"balance_after":56004.622,"source":{"system":"sec-edgar","filing":"0001193125-26-059412","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1636734/000119312526059412/ownership.xml","form_type":"4"}},{"id":893334,"issuer":{"id":3906,"kind":"organization","name":"ONE Gas, Inc."},"owners":[{"id":65662,"kind":"person","name":"McAnnally Robert S.","position":1,"cik":"0001636734","reported_name":"McAnnally Robert S.","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"See Remarks"}}],"security":"Common stock, par value $0.01","published_at":"2026-02-19T16:15:07.000Z","date":"2026-02-16","kind":"exercise","planned":false,"acquired":true,"shares":19088.379,"price":86.04,"value":1642364.12916,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Performance units awarded under the Issuer's Amended and Restated Equity Compensation Plan (2018). The award, including dividend equivalents, vested on February 14, 2026, in an amount equal to 76% of the performance units awarded based upon Issuer's total shareholder return compared to the total shareholder return of a selected peer group, was certified by the Executive Compensation Committee of the Board of Directors on February 16, 2026, and issued pursuant to the terms of the grant agreement."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Performance units awarded under the Issuer's Amended and Restated Equity Compensation Plan (2018). The award, including dividend equivalents, vested on February 14, 2026, in an amount equal to 76% of the performance units awarded based upon Issuer's total shareholder return compared to the total shareholder return of a selected peer group, was certified by the Executive Compensation Committee of the Board of Directors on February 16, 2026, and issued pursuant to the terms of the grant agreement."}],"balance_after":64414.911,"source":{"system":"sec-edgar","filing":"0001193125-26-059412","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1636734/000119312526059412/ownership.xml","form_type":"4"}},{"id":978768,"issuer":{"id":3906,"kind":"organization","name":"ONE Gas, Inc."},"owners":[{"id":44120,"kind":"person","name":"Hutchinson Michael G","position":1,"cik":"0001555428","reported_name":"Hutchinson Michael G","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common stock, par value $0.01","published_at":"2025-12-05T21:15:03.000Z","date":"2025-12-04","kind":"sale","planned":false,"acquired":false,"shares":3000,"price":78.8579,"value":236573.7,"ownership":{"direct":true},"balance_after":14631,"source":{"system":"sec-edgar","filing":"0001193125-25-309689","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1555428/000119312525309689/ownership.xml","form_type":"4"}},{"id":1133237,"issuer":{"id":3906,"kind":"organization","name":"ONE Gas, Inc."},"owners":[{"id":44171,"kind":"person","name":"RODRIGUEZ EDUARDO A","position":1,"cik":"0001286450","reported_name":"RODRIGUEZ EDUARDO A","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Phantom Stock","published_at":"2025-05-27T20:15:29.000Z","date":"2025-05-22","kind":"grant","planned":false,"acquired":true,"shares":476,"price":73.49,"value":34981.24,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"Shares of phantom stock are convertible into ONE Gas' common stock on a 1-for-1 ratio."},{"field":"kind","element":"transactionCoding","label":"F3","text":"Annual cash and/or stock retainer elected to be deferred to phantom stock under ONE Gas' Deferred Compensation Plan for Non-Employee Directors."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F4","text":"Phantom stock is accrued under ONE Gas' Deferred Compensation Plan for Non-Employee Directors (the \"Plan\") and is settled in shares of ONE Gas common stock at the distribution date described in the Plan."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F4","text":"Phantom stock is accrued under ONE Gas' Deferred Compensation Plan for Non-Employee Directors (the \"Plan\") and is settled in shares of ONE Gas common stock at the distribution date described in the Plan."}],"balance_after":4695,"derivative":{"underlying":"Common stock, par value $0.01","underlying_shares":476},"source":{"system":"sec-edgar","filing":"0000950170-25-077706","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1286450/000095017025077706/ownership.xml","form_type":"4"}},{"id":1133236,"issuer":{"id":3906,"kind":"organization","name":"ONE Gas, Inc."},"owners":[{"id":44171,"kind":"person","name":"RODRIGUEZ EDUARDO A","position":1,"cik":"0001286450","reported_name":"RODRIGUEZ EDUARDO A","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common stock, par value $0.01","published_at":"2025-05-27T20:15:29.000Z","date":"2025-05-22","kind":"grant","planned":false,"acquired":true,"shares":1428,"price":73.49,"value":104943.72,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Annual stock retainer shares are issued under ONE Gas' Amended and Restated Equity Compensation Plan (2018)."}],"balance_after":14212,"source":{"system":"sec-edgar","filing":"0000950170-25-077706","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1286450/000095017025077706/ownership.xml","form_type":"4"}},{"id":1133184,"issuer":{"id":3906,"kind":"organization","name":"ONE Gas, Inc."},"owners":[{"id":41283,"kind":"person","name":"MOORE PATTYE L","position":1,"cik":"0001185026","reported_name":"MOORE PATTYE L","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Phantom Stock","published_at":"2025-05-27T20:15:26.000Z","date":"2025-05-22","kind":"grant","planned":false,"acquired":true,"shares":1905,"price":73.49,"value":139998.45,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Shares of phantom stock are convertible into ONE Gas' common stock on a 1-for-1 ratio."},{"field":"kind","element":"transactionCoding","label":"F2","text":"Annual cash and/or stock retainer elected to be deferred to phantom stock under ONE Gas' Deferred Compensation Plan for Non-Employee Directors."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"Phantom stock is accrued under ONE Gas' Deferred Compensation Plan for Non-Employee Directors (the \"Plan\") and is settled in shares of ONE Gas common stock at the distribution date described in the Plan."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F3","text":"Phantom stock is accrued under ONE Gas' Deferred Compensation Plan for Non-Employee Directors (the \"Plan\") and is settled in shares of ONE Gas common stock at the distribution date described in the Plan."}],"balance_after":52412,"derivative":{"underlying":"Common stock, par value $0.01","underlying_shares":1905},"source":{"system":"sec-edgar","filing":"0000950170-25-077705","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1185026/000095017025077705/ownership.xml","form_type":"4"}},{"id":1132957,"issuer":{"id":3906,"kind":"organization","name":"ONE Gas, Inc."},"owners":[{"id":44120,"kind":"person","name":"Hutchinson Michael G","position":1,"cik":"0001555428","reported_name":"Hutchinson Michael G","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common stock, par value $0.01","published_at":"2025-05-27T20:15:22.000Z","date":"2025-05-22","kind":"grant","planned":false,"acquired":true,"shares":1905,"price":73.49,"value":139998.45,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Annual stock retainer shares are issued under the Issuer's Equity Compensation Plan."}],"balance_after":17631,"source":{"system":"sec-edgar","filing":"0000950170-25-077704","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1555428/000095017025077704/ownership.xml","form_type":"4"}},{"id":1132944,"issuer":{"id":3906,"kind":"organization","name":"ONE Gas, Inc."},"owners":[{"id":44116,"kind":"person","name":"Siegel Yves C","position":1,"cik":"0001572715","reported_name":"Siegel Yves C","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Phantom Stock","published_at":"2025-05-27T20:15:16.000Z","date":"2025-05-22","kind":"grant","planned":false,"acquired":true,"shares":1905,"price":73.49,"value":139998.45,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Shares of phantom stock are convertible into ONE Gas' common stock on a 1-for-1 ratio."},{"field":"kind","element":"transactionCoding","label":"F2","text":"Annual stock retainer elected to be deferred to phantom stock under ONE Gas' Deferred Compensation Plan for Non-Employee Directors."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"Phantom stock is accrued under ONE Gas' Deferred Compensation Plan for Non-Employee Directors (the \"Plan\") and is settled in shares of ONE Gas common stock at the distribution date described in the Plan."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F3","text":"Phantom stock is accrued under ONE Gas' Deferred Compensation Plan for Non-Employee Directors (the \"Plan\") and is settled in shares of ONE Gas common stock at the distribution date described in the Plan."}],"balance_after":3640,"derivative":{"underlying":"Common stock, par value $0.01","underlying_shares":1905},"source":{"system":"sec-edgar","filing":"0000950170-25-077703","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1572715/000095017025077703/ownership.xml","form_type":"4"}},{"id":1133489,"issuer":{"id":3906,"kind":"organization","name":"ONE Gas, Inc."},"owners":[{"id":40956,"kind":"person","name":"Hersman Deborah","position":1,"cik":"0001778660","reported_name":"Hersman Deborah","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Phantom Stock","published_at":"2025-05-27T20:15:13.000Z","date":"2025-05-22","kind":"grant","planned":false,"acquired":true,"shares":1905,"price":73.49,"value":139998.45,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Shares of phantom stock are convertible into ONE Gas' common stock on a 1-for-1 ratio."},{"field":"kind","element":"transactionCoding","label":"F2","text":"Annual stock retainer elected to be deferred to phantom stock under ONE Gas' Deferred Compensation Plan for Non-Employee Directors."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"Phantom stock is accrued under ONE Gas' Deferred Compensation Plan for Non-Employee Directors (the \"Plan\") and is settled in shares of ONE Gas common stock at the distribution date described in the Plan."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F3","text":"Phantom stock is accrued under ONE Gas' Deferred Compensation Plan for Non-Employee Directors (the \"Plan\") and is settled in shares of ONE Gas common stock at the distribution date described in the Plan."}],"balance_after":5658,"derivative":{"underlying":"Common stock, par value $0.01","underlying_shares":1905},"source":{"system":"sec-edgar","filing":"0000950170-25-077702","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1778660/000095017025077702/ownership.xml","form_type":"4"}},{"id":1133695,"issuer":{"id":3906,"kind":"organization","name":"ONE Gas, Inc."},"owners":[{"id":44296,"kind":"person","name":"Meshri Sanjay D.","position":1,"cik":"0002030411","reported_name":"Meshri Sanjay D.","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common stock, par value $0.01","published_at":"2025-05-27T20:15:10.000Z","date":"2025-05-22","kind":"grant","planned":false,"acquired":true,"shares":1905,"price":73.49,"value":139998.45,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Annual stock retainer shares are issued under the Issuer's Amended and Restated Equity Compensation Plan (2018)."}],"balance_after":3593,"source":{"system":"sec-edgar","filing":"0000950170-25-077701","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/2030411/000095017025077701/ownership.xml","form_type":"4"}},{"id":1133474,"issuer":{"id":3906,"kind":"organization","name":"ONE Gas, Inc."},"owners":[{"id":44243,"kind":"person","name":"Hart Tracy E","position":1,"cik":"0001747990","reported_name":"Hart Tracy E","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common stock, par value $0.01","published_at":"2025-05-27T20:15:05.000Z","date":"2025-05-22","kind":"grant","planned":false,"acquired":true,"shares":1905,"price":73.49,"value":139998.45,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Annual stock retainer shares are issued under the Issuer's Amended and Restated Equity Compensation Plan (2018)."}],"balance_after":9602,"source":{"system":"sec-edgar","filing":"0000950170-25-077698","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1747990/000095017025077698/ownership.xml","form_type":"4"}},{"id":1133204,"issuer":{"id":3906,"kind":"organization","name":"ONE Gas, Inc."},"owners":[{"id":41287,"kind":"person","name":"GIBSON JOHN WILLIAM","position":1,"cik":"0001239209","reported_name":"GIBSON JOHN WILLIAM","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Phantom Stock","published_at":"2025-05-27T20:15:04.000Z","date":"2025-05-22","kind":"grant","planned":false,"acquired":true,"shares":1905,"price":73.49,"value":139998.45,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Shares of phantom stock are convertible into ONE Gas' common stock on a 1-for-1 ratio."},{"field":"kind","element":"transactionCoding","label":"F2","text":"Annual cash and/or stock retainer elected to be deferred to phantom stock under ONE Gas' Deferred Compensation Plan for Non-Employee Directors."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"Phantom stock is accrued under ONE Gas' Deferred Compensation Plan for Non-Employee Directors (the \"Plan\") and is settled in shares of ONE Gas common stock at the distribution date described in the Plan."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F3","text":"Phantom stock is accrued under ONE Gas' Deferred Compensation Plan for Non-Employee Directors (the \"Plan\") and is settled in shares of ONE Gas common stock at the distribution date described in the Plan."}],"balance_after":24915,"derivative":{"underlying":"Common stock, par value $0.01","underlying_shares":1905},"source":{"system":"sec-edgar","filing":"0000950170-25-077699","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1239209/000095017025077699/ownership.xml","form_type":"4"}},{"id":1176820,"issuer":{"id":3906,"kind":"organization","name":"ONE Gas, Inc."},"owners":[{"id":65684,"kind":"person","name":"Sighinolfi Christopher P.","position":1,"cik":"0002003976","reported_name":"Sighinolfi Christopher P.","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"See Remarks"}}],"security":"Common stock, par value $0.01","published_at":"2025-04-07T16:15:04.000Z","date":"2025-02-18","kind":"tax_withholding","planned":false,"acquired":false,"shares":174.043,"price":71.53,"value":12449.29579,"ownership":{"direct":true},"footnotes":[{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"After recalculation of 17.822 shares withheld and cancelled for taxes as reported on line 1 of Column 4 of Table I above, the share difference of 41.327 has been corrected in the calculations shown in Column 5 of Table I on lines 1, 2 and 3.  The new totals in Column 5 above amends the totals reported on lines 2, 3 and 4 of Column 5 of Table 1 as originally filed in the Form 4 on February 20, 2025."}],"balance_after":2502.667,"source":{"system":"sec-edgar","filing":"0000950170-25-051597","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/2003976/000095017025051597/ownership.xml","form_type":"4/A","original_submission_date":"2025-02-20"}},{"id":1176819,"issuer":{"id":3906,"kind":"organization","name":"ONE Gas, Inc."},"owners":[{"id":65684,"kind":"person","name":"Sighinolfi Christopher P.","position":1,"cik":"0002003976","reported_name":"Sighinolfi Christopher P.","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"See Remarks"}}],"security":"Common stock, par value $0.01","published_at":"2025-04-07T16:15:04.000Z","date":"2025-02-18","kind":"exercise","planned":false,"acquired":true,"shares":505.939,"price":71.53,"value":36189.81667,"ownership":{"direct":true},"footnotes":[{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"After recalculation of 17.822 shares withheld and cancelled for taxes as reported on line 1 of Column 4 of Table I above, the share difference of 41.327 has been corrected in the calculations shown in Column 5 of Table I on lines 1, 2 and 3.  The new totals in Column 5 above amends the totals reported on lines 2, 3 and 4 of Column 5 of Table 1 as originally filed in the Form 4 on February 20, 2025."}],"balance_after":2676.71,"source":{"system":"sec-edgar","filing":"0000950170-25-051597","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/2003976/000095017025051597/ownership.xml","form_type":"4/A","original_submission_date":"2025-02-20"}},{"id":1176818,"issuer":{"id":3906,"kind":"organization","name":"ONE Gas, Inc."},"owners":[{"id":65684,"kind":"person","name":"Sighinolfi Christopher P.","position":1,"cik":"0002003976","reported_name":"Sighinolfi Christopher P.","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"See Remarks"}}],"security":"Common stock, par value $0.01","published_at":"2025-04-07T16:15:04.000Z","date":"2025-02-18","kind":"tax_withholding","planned":false,"acquired":false,"shares":17.822,"price":71.53,"value":1274.80766,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"The Form 4, as originally filed on February 20, 2025, incorrectly reported in line 2 of Column 4 of Table I, 59.149 shares were withheld and cancelled for taxes in connection with vesting of 758.352 performance unit shares deferred by the reporting person. Later, the issuer revised the actual number of shares required based on updated withholding calculations. Thus, as reported in this amendment, the reporting person only surrendered 17.822 shares of the issuer's Common Stock to satisfy those tax withholding obligations, and this amendment corrects that amount."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"After recalculation of 17.822 shares withheld and cancelled for taxes as reported on line 1 of Column 4 of Table I above, the share difference of 41.327 has been corrected in the calculations shown in Column 5 of Table I on lines 1, 2 and 3.  The new totals in Column 5 above amends the totals reported on lines 2, 3 and 4 of Column 5 of Table 1 as originally filed in the Form 4 on February 20, 2025."}],"balance_after":2170.771,"source":{"system":"sec-edgar","filing":"0000950170-25-051597","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/2003976/000095017025051597/ownership.xml","form_type":"4/A","original_submission_date":"2025-02-20"}},{"id":1195439,"issuer":{"id":3906,"kind":"organization","name":"ONE Gas, Inc."},"owners":[{"id":44120,"kind":"person","name":"Hutchinson Michael G","position":1,"cik":"0001555428","reported_name":"Hutchinson Michael G","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common stock, par value $0.01","published_at":"2025-03-20T20:15:06.000Z","date":"2025-03-18","kind":"sale","planned":false,"acquired":false,"shares":1200,"price":74.03,"value":88836.0,"ownership":{"direct":true},"balance_after":15726,"source":{"system":"sec-edgar","filing":"0000950170-25-042668","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1555428/000095017025042668/ownership.xml","form_type":"4"}},{"id":1255075,"issuer":{"id":3906,"kind":"organization","name":"ONE Gas, Inc."},"owners":[{"id":65620,"kind":"person","name":"Shortridge William Kent","position":1,"cik":"0001916652","reported_name":"Shortridge William Kent","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"See Remarks"}}],"security":"Restricted Units 2025","published_at":"2025-02-20T21:15:15.000Z","date":"2025-02-18","kind":"grant","planned":false,"acquired":true,"shares":1538,"price":71.53,"value":110013.14,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F4","text":"Restricted units awarded under the Issuer's Amended and Restated Equity Compensation Plan (2018). The award vests on February 19, 2028, in accordance with the terms of the Restricted Unit Award Agreement.  During the 3-year vesting period, the award will be credited with dividend equivalents that will be paid out at the time the underlying units are issued. The award and credited dividend equivalents will be payable one share of the Issuer's common stock for each vested restricted unit and dividend equivalent."},{"field":"price","element":"transactionPricePerShare","label":"F4","text":"Restricted units awarded under the Issuer's Amended and Restated Equity Compensation Plan (2018). The award vests on February 19, 2028, in accordance with the terms of the Restricted Unit Award Agreement.  During the 3-year vesting period, the award will be credited with dividend equivalents that will be paid out at the time the underlying units are issued. The award and credited dividend equivalents will be payable one share of the Issuer's common stock for each vested restricted unit and dividend equivalent."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F4","text":"Restricted units awarded under the Issuer's Amended and Restated Equity Compensation Plan (2018). The award vests on February 19, 2028, in accordance with the terms of the Restricted Unit Award Agreement.  During the 3-year vesting period, the award will be credited with dividend equivalents that will be paid out at the time the underlying units are issued. The award and credited dividend equivalents will be payable one share of the Issuer's common stock for each vested restricted unit and dividend equivalent."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F4","text":"Restricted units awarded under the Issuer's Amended and Restated Equity Compensation Plan (2018). The award vests on February 19, 2028, in accordance with the terms of the Restricted Unit Award Agreement.  During the 3-year vesting period, the award will be credited with dividend equivalents that will be paid out at the time the underlying units are issued. The award and credited dividend equivalents will be payable one share of the Issuer's common stock for each vested restricted unit and dividend equivalent."}],"balance_after":1538,"derivative":{"underlying":"Common stock, par value $0.01","underlying_shares":1538},"source":{"system":"sec-edgar","filing":"0000950170-25-024173","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":9,"url":"https://www.sec.gov/Archives/edgar/data/1587732/000095017025024173/ownership.xml","form_type":"4"}}],"next_cursor":"2025-02-20T21:15:15.000000Z,1255075"}