{"transactions":[{"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":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":1256229,"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 2025","published_at":"2025-02-20T16:15:09.000Z","date":"2025-02-18","kind":"grant","planned":false,"acquired":true,"shares":3775,"price":71.53,"value":270025.75,"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 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":"F5","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":"F5","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":"F5","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":3775,"derivative":{"underlying":"Common stock, par value $0.01","underlying_shares":3775},"source":{"system":"sec-edgar","filing":"0000950170-25-024170","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":8,"url":"https://www.sec.gov/Archives/edgar/data/2003976/000095017025024170/ownership.xml","form_type":"4"}},{"id":1256228,"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 2025","published_at":"2025-02-20T16:15:09.000Z","date":"2025-02-18","kind":"grant","planned":false,"acquired":true,"shares":5662,"price":71.53,"value":405002.86,"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 19, 2028, 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, 2025, through December 31, 2027, in accordance with the terms of the Performance 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 performance unit and dividend equivalent."},{"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 19, 2028, 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, 2025, through December 31, 2027, in accordance with the terms of the Performance 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 performance unit and dividend equivalent."},{"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 19, 2028, 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, 2025, through December 31, 2027, in accordance with the terms of the Performance 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 performance unit and dividend equivalent."},{"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 19, 2028, 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, 2025, through December 31, 2027, in accordance with the terms of the Performance 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 performance unit and dividend equivalent."}],"balance_after":5662,"derivative":{"underlying":"Common stock, par value $0.01","underlying_shares":5662},"source":{"system":"sec-edgar","filing":"0000950170-25-024170","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":7,"url":"https://www.sec.gov/Archives/edgar/data/2003976/000095017025024170/ownership.xml","form_type":"4"}},{"id":1256227,"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 2022","published_at":"2025-02-20T16:15:09.000Z","date":"2025-02-18","kind":"exercise","planned":false,"acquired":false,"shares":455,"price":71.53,"value":32546.15,"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). The award vested on February 15, 2025. 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 award and credited dividend equivalents were payable one share of the Issuer's common stock for each vested restricted unit, including additional restricted units resulting from the dividend equivalents."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"Restricted units awarded under Issuer's Amended and Restated Equity Compensation Plan (2018). The award vested on February 15, 2025. 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 award and credited dividend equivalents were payable one share of the Issuer's common stock for each vested restricted unit, including additional restricted units resulting from the dividend equivalents."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"Restricted units awarded under Issuer's Amended and Restated Equity Compensation Plan (2018). The award vested on February 15, 2025. 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 award and credited dividend equivalents were payable one share of the Issuer's common stock for each vested restricted unit, including additional restricted units resulting from the dividend equivalents."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F3","text":"Restricted units awarded under Issuer's Amended and Restated Equity Compensation Plan (2018). The award vested on February 15, 2025. 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 award and credited dividend equivalents were payable one share of the Issuer's common stock for each vested restricted unit, including additional restricted units resulting from the dividend equivalents."}],"balance_after":0,"derivative":{"underlying":"Common stock, par value $0.01","underlying_shares":455},"source":{"system":"sec-edgar","filing":"0000950170-25-024170","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/2003976/000095017025024170/ownership.xml","form_type":"4"}},{"id":1256226,"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 2022","published_at":"2025-02-20T16:15:09.000Z","date":"2025-02-18","kind":"exercise","planned":false,"acquired":false,"shares":1364,"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 15, 2025, in an amount equal to 50% of the performance units awarded based upon Issuer's total shareholder return compared to the total shareholder return of a selected peer group and was certified by the Executive Compensation Committee of the Board of Directors on February 17, 2025.  The reporting person's receipt of 758.352 shares of common stock was deferred under the ECP resulting in the reporting person's receipt of 758.352 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 under the ECP. The reporting person is therefore reporting the disposition of 758.352 shares of common stock in exchange for an equal number of deferred stock units."},{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"(Continued from footnote 1) The reporting person had 59.149 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 15, 2025, in an amount equal to 50% of the performance units awarded based upon Issuer's total shareholder return compared to the total shareholder return of a selected peer group and was certified by the Executive Compensation Committee of the Board of Directors on February 17, 2025.  The reporting person's receipt of 758.352 shares of common stock was deferred under the ECP resulting in the reporting person's receipt of 758.352 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 under the ECP. The reporting person is therefore reporting the disposition of 758.352 shares of common stock in exchange for an equal number of deferred stock units."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"(Continued from footnote 1) The reporting person had 59.149 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 15, 2025, in an amount equal to 50% of the performance units awarded based upon Issuer's total shareholder return compared to the total shareholder return of a selected peer group and was certified by the Executive Compensation Committee of the Board of Directors on February 17, 2025.  The reporting person's receipt of 758.352 shares of common stock was deferred under the ECP resulting in the reporting person's receipt of 758.352 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 under the ECP. The reporting person is therefore reporting the disposition of 758.352 shares of common stock in exchange for an equal number of deferred stock units."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"(Continued from footnote 1) The reporting person had 59.149 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 15, 2025, in an amount equal to 50% of the performance units awarded based upon Issuer's total shareholder return compared to the total shareholder return of a selected peer group and was certified by the Executive Compensation Committee of the Board of Directors on February 17, 2025.  The reporting person's receipt of 758.352 shares of common stock was deferred under the ECP resulting in the reporting person's receipt of 758.352 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 under the ECP. The reporting person is therefore reporting the disposition of 758.352 shares of common stock in exchange for an equal number of deferred stock units."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"(Continued from footnote 1) The reporting person had 59.149 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":1364},"source":{"system":"sec-edgar","filing":"0000950170-25-024170","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/2003976/000095017025024170/ownership.xml","form_type":"4"}},{"id":1256225,"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":"2025-02-20T16:15:09.000Z","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":"shares","element":"transactionShares","label":"F3","text":"Restricted units awarded under Issuer's Amended and Restated Equity Compensation Plan (2018). The award vested on February 15, 2025. 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 award and credited dividend equivalents were payable one share of the Issuer's common stock for each vested restricted unit, including additional restricted units resulting from the dividend equivalents."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"Restricted units awarded under Issuer's Amended and Restated Equity Compensation Plan (2018). The award vested on February 15, 2025. 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 award and credited dividend equivalents were payable one share of the Issuer's common stock for each vested restricted unit, including additional restricted units resulting from the dividend equivalents."}],"balance_after":2461.34,"source":{"system":"sec-edgar","filing":"0000950170-25-024170","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/2003976/000095017025024170/ownership.xml","form_type":"4"}},{"id":1256224,"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":"2025-02-20T16:15:09.000Z","date":"2025-02-18","kind":"exercise","planned":false,"acquired":true,"shares":505.939,"price":71.53,"value":36189.81667,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F3","text":"Restricted units awarded under Issuer's Amended and Restated Equity Compensation Plan (2018). The award vested on February 15, 2025. 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 award and credited dividend equivalents were payable one share of the Issuer's common stock for each vested restricted unit, including additional restricted units resulting from the dividend equivalents."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"Restricted units awarded under Issuer's Amended and Restated Equity Compensation Plan (2018). The award vested on February 15, 2025. 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 award and credited dividend equivalents were payable one share of the Issuer's common stock for each vested restricted unit, including additional restricted units resulting from the dividend equivalents."}],"balance_after":2635.383,"source":{"system":"sec-edgar","filing":"0000950170-25-024170","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/2003976/000095017025024170/ownership.xml","form_type":"4"}},{"id":1256223,"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":"2025-02-20T16:15:09.000Z","date":"2025-02-18","kind":"tax_withholding","planned":false,"acquired":false,"shares":59.149,"price":71.53,"value":4230.92797,"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 15, 2025, in an amount equal to 50% of the performance units awarded based upon Issuer's total shareholder return compared to the total shareholder return of a selected peer group and was certified by the Executive Compensation Committee of the Board of Directors on February 17, 2025.  The reporting person's receipt of 758.352 shares of common stock was deferred under the ECP resulting in the reporting person's receipt of 758.352 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 under the ECP. The reporting person is therefore reporting the disposition of 758.352 shares of common stock in exchange for an equal number of deferred stock units."},{"field":"shares","element":"transactionShares","label":"F2","text":"(Continued from footnote 1) The reporting person had 59.149 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 15, 2025, in an amount equal to 50% of the performance units awarded based upon Issuer's total shareholder return compared to the total shareholder return of a selected peer group and was certified by the Executive Compensation Committee of the Board of Directors on February 17, 2025.  The reporting person's receipt of 758.352 shares of common stock was deferred under the ECP resulting in the reporting person's receipt of 758.352 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 under the ECP. The reporting person is therefore reporting the disposition of 758.352 shares of common stock in exchange for an equal number of deferred stock units."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"(Continued from footnote 1) The reporting person had 59.149 shares withheld and cancelled in respect of taxes in connection with the vesting of the performance units."}],"balance_after":2129.444,"source":{"system":"sec-edgar","filing":"0000950170-25-024170","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/2003976/000095017025024170/ownership.xml","form_type":"4"}},{"id":1256222,"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":"2025-02-20T16:15:09.000Z","date":"2025-02-18","kind":"exercise","planned":false,"acquired":true,"shares":758.352,"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 15, 2025, in an amount equal to 50% of the performance units awarded based upon Issuer's total shareholder return compared to the total shareholder return of a selected peer group and was certified by the Executive Compensation Committee of the Board of Directors on February 17, 2025.  The reporting person's receipt of 758.352 shares of common stock was deferred under the ECP resulting in the reporting person's receipt of 758.352 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 under the ECP. The reporting person is therefore reporting the disposition of 758.352 shares of common stock in exchange for an equal number of deferred stock units."},{"field":"shares","element":"transactionShares","label":"F2","text":"(Continued from footnote 1) The reporting person had 59.149 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 15, 2025, in an amount equal to 50% of the performance units awarded based upon Issuer's total shareholder return compared to the total shareholder return of a selected peer group and was certified by the Executive Compensation Committee of the Board of Directors on February 17, 2025.  The reporting person's receipt of 758.352 shares of common stock was deferred under the ECP resulting in the reporting person's receipt of 758.352 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 under the ECP. The reporting person is therefore reporting the disposition of 758.352 shares of common stock in exchange for an equal number of deferred stock units."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"(Continued from footnote 1) The reporting person had 59.149 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 15, 2025, in an amount equal to 50% of the performance units awarded based upon Issuer's total shareholder return compared to the total shareholder return of a selected peer group and was certified by the Executive Compensation Committee of the Board of Directors on February 17, 2025.  The reporting person's receipt of 758.352 shares of common stock was deferred under the ECP resulting in the reporting person's receipt of 758.352 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 under the ECP. The reporting person is therefore reporting the disposition of 758.352 shares of common stock in exchange for an equal number of deferred stock units."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"(Continued from footnote 1) The reporting person had 59.149 shares withheld and cancelled in respect of taxes in connection with the vesting of the performance units."}],"balance_after":2188.593,"source":{"system":"sec-edgar","filing":"0000950170-25-024170","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/2003976/000095017025024170/ownership.xml","form_type":"4"}},{"id":1629862,"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 2024","published_at":"2024-02-21T16:52:25.000Z","date":"2024-02-19","kind":"grant","planned":false,"acquired":true,"shares":1976,"price":60.74,"value":120022.24,"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 13, 2027, 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 13, 2027, 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 13, 2027, 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 13, 2027, 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":1976,"derivative":{"underlying":"Common stock, par value $0.01","underlying_shares":1976},"source":{"system":"sec-edgar","filing":"0000950170-24-018031","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/2003976/000095017024018031/ownership.xml","form_type":"4"}},{"id":1629861,"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 2024","published_at":"2024-02-21T16:52:25.000Z","date":"2024-02-19","kind":"grant","planned":false,"acquired":true,"shares":7903,"price":60.74,"value":480028.22,"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 13, 2027, 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, 2024, through December 31, 2026, in accordance with the terms of the Performance 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 performance unit and dividend equivalent."},{"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 13, 2027, 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, 2024, through December 31, 2026, in accordance with the terms of the Performance 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 performance unit and dividend equivalent."},{"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 13, 2027, 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, 2024, through December 31, 2026, in accordance with the terms of the Performance 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 performance unit and dividend equivalent."},{"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 13, 2027, 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, 2024, through December 31, 2026, in accordance with the terms of the Performance 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 performance unit and dividend equivalent."}],"balance_after":7903,"derivative":{"underlying":"Common stock, par value $0.01","underlying_shares":7903},"source":{"system":"sec-edgar","filing":"0000950170-24-018031","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/2003976/000095017024018031/ownership.xml","form_type":"4"}},{"id":1629860,"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 2021","published_at":"2024-02-21T16:52:25.000Z","date":"2024-02-19","kind":"exercise","planned":false,"acquired":false,"shares":481,"price":60.74,"value":29215.94,"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). The award vested on February 17, 2024. 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 award and credited dividend equivalents was payable one share of the Issuer's common stock for each vested restricted unit, including additional restricted units resulting from the dividend equivalents."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"Restricted units awarded under Issuer's Amended and Restated Equity Compensation Plan (2018). The award vested on February 17, 2024. 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 award and credited dividend equivalents was payable one share of the Issuer's common stock for each vested restricted unit, including additional restricted units resulting from the dividend equivalents."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"Restricted units awarded under Issuer's Amended and Restated Equity Compensation Plan (2018). The award vested on February 17, 2024. 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 award and credited dividend equivalents was payable one share of the Issuer's common stock for each vested restricted unit, including additional restricted units resulting from the dividend equivalents."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"Restricted units awarded under Issuer's Amended and Restated Equity Compensation Plan (2018). The award vested on February 17, 2024. 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 award and credited dividend equivalents was payable one share of the Issuer's common stock for each vested restricted unit, including additional restricted units resulting from the dividend equivalents."}],"balance_after":0,"derivative":{"underlying":"Common stock, par value $0.01","underlying_shares":481},"source":{"system":"sec-edgar","filing":"0000950170-24-018031","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/2003976/000095017024018031/ownership.xml","form_type":"4"}},{"id":1629859,"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 2021","published_at":"2024-02-21T16:52:25.000Z","date":"2024-02-19","kind":"exercise","planned":false,"acquired":false,"shares":1442,"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 award, including dividend equivalents, vested on February 17, 2024, at less than the 25th percentile for the Issuer's total shareholder return compared to the total shareholder return of a selected peer group, resulting in no shares being issued to the reporting person upon certification by the Executive Compensation Committee of the Board of Directors of the Company on February 19, 2024."},{"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 17, 2024, at less than the 25th percentile for the Issuer's total shareholder return compared to the total shareholder return of a selected peer group, resulting in no shares being issued to the reporting person upon certification by the Executive Compensation Committee of the Board of Directors of the Company on February 19, 2024."},{"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 17, 2024, at less than the 25th percentile for the Issuer's total shareholder return compared to the total shareholder return of a selected peer group, resulting in no shares being issued to the reporting person upon certification by the Executive Compensation Committee of the Board of Directors of the Company on February 19, 2024."},{"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 17, 2024, at less than the 25th percentile for the Issuer's total shareholder return compared to the total shareholder return of a selected peer group, resulting in no shares being issued to the reporting person upon certification by the Executive Compensation Committee of the Board of Directors of the Company on February 19, 2024."}],"balance_after":0,"derivative":{"underlying":"Common stock, par value $0.01","underlying_shares":1442},"source":{"system":"sec-edgar","filing":"0000950170-24-018031","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/2003976/000095017024018031/ownership.xml","form_type":"4"}},{"id":1629858,"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":"2024-02-21T16:52:25.000Z","date":"2024-02-19","kind":"tax_withholding","planned":false,"acquired":false,"shares":179,"price":60.74,"value":10872.46,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F2","text":"Restricted units awarded under Issuer's Amended and Restated Equity Compensation Plan (2018). The award vested on February 17, 2024. 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 award and credited dividend equivalents was payable one share of the Issuer's common stock for each vested restricted unit, including additional restricted units resulting from the dividend equivalents."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"Restricted units awarded under Issuer's Amended and Restated Equity Compensation Plan (2018). The award vested on February 17, 2024. 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 award and credited dividend equivalents was payable one share of the Issuer's common stock for each vested restricted unit, including additional restricted units resulting from the dividend equivalents."}],"balance_after":993,"source":{"system":"sec-edgar","filing":"0000950170-24-018031","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/2003976/000095017024018031/ownership.xml","form_type":"4"}},{"id":1629857,"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":"2024-02-21T16:52:25.000Z","date":"2024-02-19","kind":"exercise","planned":false,"acquired":true,"shares":518,"price":60.74,"value":31463.32,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F2","text":"Restricted units awarded under Issuer's Amended and Restated Equity Compensation Plan (2018). The award vested on February 17, 2024. 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 award and credited dividend equivalents was payable one share of the Issuer's common stock for each vested restricted unit, including additional restricted units resulting from the dividend equivalents."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"Restricted units awarded under Issuer's Amended and Restated Equity Compensation Plan (2018). The award vested on February 17, 2024. 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 award and credited dividend equivalents was payable one share of the Issuer's common stock for each vested restricted unit, including additional restricted units resulting from the dividend equivalents."}],"balance_after":1172,"source":{"system":"sec-edgar","filing":"0000950170-24-018031","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/2003976/000095017024018031/ownership.xml","form_type":"4"}}]}