{"transactions":[{"id":684899,"issuer":{"id":3952,"kind":"organization","name":"FIRST FINANCIAL BANKSHARES INC","symbol":"FFIN"},"owners":[{"id":22667,"kind":"person","name":"Butler Ronald David II","position":1,"cik":"0001554713","reported_name":"Butler Ronald David II","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP/CAO"}}],"security":"Employee Stock Option, Right to Buy","published_at":"2026-08-18T18:10:10.000Z","date":"2026-08-17","kind":"exercise","planned":false,"acquired":false,"shares":5000,"price":21.18,"value":105900.0,"ownership":{"direct":true},"balance_after":15000,"derivative":{"exercise_price":21.18,"exercise_date":"2020-06-12","expiration_date":"2027-06-12","underlying":"Common Stock","underlying_shares":5000},"source":{"system":"sec-edgar","filing":"0001193125-26-355206","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":7,"url":"https://www.sec.gov/Archives/edgar/data/36029/000119312526355206/ownership.xml","form_type":"4"}},{"id":684898,"issuer":{"id":3952,"kind":"organization","name":"FIRST FINANCIAL BANKSHARES INC","symbol":"FFIN"},"owners":[{"id":22667,"kind":"person","name":"Butler Ronald David II","position":1,"cik":"0001554713","reported_name":"Butler Ronald David II","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP/CAO"}}],"security":"Deferred Stock Unit","published_at":"2026-08-18T18:10:10.000Z","date":"2026-08-16","kind":"grant","planned":false,"acquired":true,"shares":1354,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"In connection with the vesting on August 16, 2026, of 1,354 restricted stock units previously granted to the reporting person, the reporting person's receipt of 1,354 shares of common stock was deferred resulting in the reporting person's receipt instead of 1,354 shares of deferred stock units into the First Financial Bankshares, Inc. Supplemental Executive Retirement Plan, as amended and restated effected July 26, 2022 (the \"SERP\"). The reporting person is therefore reporting the disposition of 1,354 restricted stock units in exchange for an equal number of deferred stock units under the SERP, which are payable upon the reporting person's termination."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"In connection with the vesting on August 16, 2026, of 1,354 restricted stock units previously granted to the reporting person, the reporting person's receipt of 1,354 shares of common stock was deferred resulting in the reporting person's receipt instead of 1,354 shares of deferred stock units into the First Financial Bankshares, Inc. Supplemental Executive Retirement Plan, as amended and restated effected July 26, 2022 (the \"SERP\"). The reporting person is therefore reporting the disposition of 1,354 restricted stock units in exchange for an equal number of deferred stock units under the SERP, which are payable upon the reporting person's termination."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"In connection with the vesting on August 16, 2026, of 1,354 restricted stock units previously granted to the reporting person, the reporting person's receipt of 1,354 shares of common stock was deferred resulting in the reporting person's receipt instead of 1,354 shares of deferred stock units into the First Financial Bankshares, Inc. Supplemental Executive Retirement Plan, as amended and restated effected July 26, 2022 (the \"SERP\"). The reporting person is therefore reporting the disposition of 1,354 restricted stock units in exchange for an equal number of deferred stock units under the SERP, which are payable upon the reporting person's termination."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"In connection with the vesting on August 16, 2026, of 1,354 restricted stock units previously granted to the reporting person, the reporting person's receipt of 1,354 shares of common stock was deferred resulting in the reporting person's receipt instead of 1,354 shares of deferred stock units into the First Financial Bankshares, Inc. Supplemental Executive Retirement Plan, as amended and restated effected July 26, 2022 (the \"SERP\"). The reporting person is therefore reporting the disposition of 1,354 restricted stock units in exchange for an equal number of deferred stock units under the SERP, which are payable upon the reporting person's termination."}],"balance_after":17991,"derivative":{"underlying":"Common Stock","underlying_shares":1354},"source":{"system":"sec-edgar","filing":"0001193125-26-355206","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/36029/000119312526355206/ownership.xml","form_type":"4"}},{"id":684897,"issuer":{"id":3952,"kind":"organization","name":"FIRST FINANCIAL BANKSHARES INC","symbol":"FFIN"},"owners":[{"id":22667,"kind":"person","name":"Butler Ronald David II","position":1,"cik":"0001554713","reported_name":"Butler Ronald David II","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP/CAO"}}],"security":"Deferred Stock Units","published_at":"2026-08-18T18:10:10.000Z","date":"2026-08-14","kind":"grant","planned":false,"acquired":true,"shares":2375,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"In connection with the vesting on August 14, 2026, of 2,375 restricted stock units previously granted to the reporting person, the reporting person's receipt of 2,375 shares of common stock was deferred resulting in the reporting person's receipt instead of 2,375 shares of deferred stock units into the First Financial Bankshares, Inc. Supplemental Executive Retirement Plan, as amended and restated effected July 26, 2022 (the \"SERP\"). The reporting person is therefore reporting the disposition of 2,375 restricted stock units in exchange for an equal number of deferred stock units under the SERP, which are payable upon the reporting person's termination."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"In connection with the vesting on August 14, 2026, of 2,375 restricted stock units previously granted to the reporting person, the reporting person's receipt of 2,375 shares of common stock was deferred resulting in the reporting person's receipt instead of 2,375 shares of deferred stock units into the First Financial Bankshares, Inc. Supplemental Executive Retirement Plan, as amended and restated effected July 26, 2022 (the \"SERP\"). The reporting person is therefore reporting the disposition of 2,375 restricted stock units in exchange for an equal number of deferred stock units under the SERP, which are payable upon the reporting person's termination."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"In connection with the vesting on August 14, 2026, of 2,375 restricted stock units previously granted to the reporting person, the reporting person's receipt of 2,375 shares of common stock was deferred resulting in the reporting person's receipt instead of 2,375 shares of deferred stock units into the First Financial Bankshares, Inc. Supplemental Executive Retirement Plan, as amended and restated effected July 26, 2022 (the \"SERP\"). The reporting person is therefore reporting the disposition of 2,375 restricted stock units in exchange for an equal number of deferred stock units under the SERP, which are payable upon the reporting person's termination."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F1","text":"In connection with the vesting on August 14, 2026, of 2,375 restricted stock units previously granted to the reporting person, the reporting person's receipt of 2,375 shares of common stock was deferred resulting in the reporting person's receipt instead of 2,375 shares of deferred stock units into the First Financial Bankshares, Inc. Supplemental Executive Retirement Plan, as amended and restated effected July 26, 2022 (the \"SERP\"). The reporting person is therefore reporting the disposition of 2,375 restricted stock units in exchange for an equal number of deferred stock units under the SERP, which are payable upon the reporting person's termination."}],"balance_after":16637,"derivative":{"underlying":"Common Stock","underlying_shares":2375},"source":{"system":"sec-edgar","filing":"0001193125-26-355206","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/36029/000119312526355206/ownership.xml","form_type":"4"}},{"id":684896,"issuer":{"id":3952,"kind":"organization","name":"FIRST FINANCIAL BANKSHARES INC","symbol":"FFIN"},"owners":[{"id":22667,"kind":"person","name":"Butler Ronald David II","position":1,"cik":"0001554713","reported_name":"Butler Ronald David II","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP/CAO"}}],"security":"Common Stock","published_at":"2026-08-18T18:10:10.000Z","date":"2026-08-17","kind":"exercise","planned":false,"acquired":true,"shares":5000,"price":21.18,"value":105900.0,"ownership":{"direct":true},"balance_after":157223,"source":{"system":"sec-edgar","filing":"0001193125-26-355206","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/36029/000119312526355206/ownership.xml","form_type":"4"}},{"id":684895,"issuer":{"id":3952,"kind":"organization","name":"FIRST FINANCIAL BANKSHARES INC","symbol":"FFIN"},"owners":[{"id":22667,"kind":"person","name":"Butler Ronald David II","position":1,"cik":"0001554713","reported_name":"Butler Ronald David II","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP/CAO"}}],"security":"Common Stock","published_at":"2026-08-18T18:10:10.000Z","date":"2026-08-17","kind":"sale","planned":false,"acquired":false,"shares":15000,"price":34.95,"value":524250.0,"ownership":{"direct":true},"balance_after":152223,"source":{"system":"sec-edgar","filing":"0001193125-26-355206","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/36029/000119312526355206/ownership.xml","form_type":"4"}},{"id":684894,"issuer":{"id":3952,"kind":"organization","name":"FIRST FINANCIAL BANKSHARES INC","symbol":"FFIN"},"owners":[{"id":22667,"kind":"person","name":"Butler Ronald David II","position":1,"cik":"0001554713","reported_name":"Butler Ronald David II","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP/CAO"}}],"security":"Common Stock","published_at":"2026-08-18T18:10:10.000Z","date":"2026-08-16","kind":"disposition_to_issuer","planned":false,"acquired":false,"shares":1354,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F2","text":"In connection with the vesting on August 16, 2026, of 1,354 restricted stock units previously granted to the reporting person, the reporting person's receipt of 1,354 shares of common stock was deferred resulting in the reporting person's receipt instead of 1,354 shares of deferred stock units into the First Financial Bankshares, Inc. Supplemental Executive Retirement Plan, as amended and restated effected July 26, 2022 (the \"SERP\"). The reporting person is therefore reporting the disposition of 1,354 restricted stock units in exchange for an equal number of deferred stock units under the SERP, which are payable upon the reporting person's termination."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"In connection with the vesting on August 16, 2026, of 1,354 restricted stock units previously granted to the reporting person, the reporting person's receipt of 1,354 shares of common stock was deferred resulting in the reporting person's receipt instead of 1,354 shares of deferred stock units into the First Financial Bankshares, Inc. Supplemental Executive Retirement Plan, as amended and restated effected July 26, 2022 (the \"SERP\"). The reporting person is therefore reporting the disposition of 1,354 restricted stock units in exchange for an equal number of deferred stock units under the SERP, which are payable upon the reporting person's termination."}],"balance_after":167223,"source":{"system":"sec-edgar","filing":"0001193125-26-355206","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/36029/000119312526355206/ownership.xml","form_type":"4"}},{"id":684893,"issuer":{"id":3952,"kind":"organization","name":"FIRST FINANCIAL BANKSHARES INC","symbol":"FFIN"},"owners":[{"id":22667,"kind":"person","name":"Butler Ronald David II","position":1,"cik":"0001554713","reported_name":"Butler Ronald David II","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP/CAO"}}],"security":"Common Stock","published_at":"2026-08-18T18:10:10.000Z","date":"2026-08-14","kind":"disposition_to_issuer","planned":false,"acquired":false,"shares":2375,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"In connection with the vesting on August 14, 2026, of 2,375 restricted stock units previously granted to the reporting person, the reporting person's receipt of 2,375 shares of common stock was deferred resulting in the reporting person's receipt instead of 2,375 shares of deferred stock units into the First Financial Bankshares, Inc. Supplemental Executive Retirement Plan, as amended and restated effected July 26, 2022 (the \"SERP\"). The reporting person is therefore reporting the disposition of 2,375 restricted stock units in exchange for an equal number of deferred stock units under the SERP, which are payable upon the reporting person's termination."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"In connection with the vesting on August 14, 2026, of 2,375 restricted stock units previously granted to the reporting person, the reporting person's receipt of 2,375 shares of common stock was deferred resulting in the reporting person's receipt instead of 2,375 shares of deferred stock units into the First Financial Bankshares, Inc. Supplemental Executive Retirement Plan, as amended and restated effected July 26, 2022 (the \"SERP\"). The reporting person is therefore reporting the disposition of 2,375 restricted stock units in exchange for an equal number of deferred stock units under the SERP, which are payable upon the reporting person's termination."}],"balance_after":168577,"source":{"system":"sec-edgar","filing":"0001193125-26-355206","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/36029/000119312526355206/ownership.xml","form_type":"4"}},{"id":840728,"issuer":{"id":3952,"kind":"organization","name":"FIRST FINANCIAL BANKSHARES INC","symbol":"FFIN"},"owners":[{"id":22667,"kind":"person","name":"Butler Ronald David II","position":1,"cik":"0001554713","reported_name":"Butler Ronald David II","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CAO"}}],"security":"Deferred Stock Units","published_at":"2026-03-17T20:54:36.000Z","date":"2026-03-13","kind":"grant","planned":false,"acquired":true,"shares":6094,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"In connection with the vesting of performance stock units previously granted on August 16, 2023, Mr. Butler's receipt of 6,094 shares of common stock was deferred resulting in Mr. Butler's receipt instead of 6,094 shares of deferred stock units into the First Financial Bankshares, Inc. Supplemental Executive Retirement Plan, as amended and restated effective July 26, 2022 (the \"SERP\"). Mr. Butler is therefore reporting the disposition of 6,094 performance stock units in exchange for an equal number of shares of deferred stock units under the SERP, which are payable upon Mr. Butler's termination of employment."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"In connection with the vesting of performance stock units previously granted on August 16, 2023, Mr. Butler's receipt of 6,094 shares of common stock was deferred resulting in Mr. Butler's receipt instead of 6,094 shares of deferred stock units into the First Financial Bankshares, Inc. Supplemental Executive Retirement Plan, as amended and restated effective July 26, 2022 (the \"SERP\"). Mr. Butler is therefore reporting the disposition of 6,094 performance stock units in exchange for an equal number of shares of deferred stock units under the SERP, which are payable upon Mr. Butler's termination of employment."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"In connection with the vesting of performance stock units previously granted on August 16, 2023, Mr. Butler's receipt of 6,094 shares of common stock was deferred resulting in Mr. Butler's receipt instead of 6,094 shares of deferred stock units into the First Financial Bankshares, Inc. Supplemental Executive Retirement Plan, as amended and restated effective July 26, 2022 (the \"SERP\"). Mr. Butler is therefore reporting the disposition of 6,094 performance stock units in exchange for an equal number of shares of deferred stock units under the SERP, which are payable upon Mr. Butler's termination of employment."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"In connection with the vesting of performance stock units previously granted on August 16, 2023, Mr. Butler's receipt of 6,094 shares of common stock was deferred resulting in Mr. Butler's receipt instead of 6,094 shares of deferred stock units into the First Financial Bankshares, Inc. Supplemental Executive Retirement Plan, as amended and restated effective July 26, 2022 (the \"SERP\"). Mr. Butler is therefore reporting the disposition of 6,094 performance stock units in exchange for an equal number of shares of deferred stock units under the SERP, which are payable upon Mr. Butler's termination of employment."}],"balance_after":14262,"derivative":{"underlying":"Common Stock","underlying_shares":6094},"source":{"system":"sec-edgar","filing":"0001193125-26-111084","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/36029/000119312526111084/ownership.xml","form_type":"4"}},{"id":840727,"issuer":{"id":3952,"kind":"organization","name":"FIRST FINANCIAL BANKSHARES INC","symbol":"FFIN"},"owners":[{"id":22667,"kind":"person","name":"Butler Ronald David II","position":1,"cik":"0001554713","reported_name":"Butler Ronald David II","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CAO"}}],"security":"Common Stock","published_at":"2026-03-17T20:54:36.000Z","date":"2026-03-13","kind":"disposition_to_issuer","planned":false,"acquired":false,"shares":6094,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F2","text":"In connection with the vesting of performance stock units previously granted on August 16, 2023, Mr. Butler's receipt of 6,094 shares of common stock was deferred resulting in Mr. Butler's receipt instead of 6,094 shares of deferred stock units into the First Financial Bankshares, Inc. Supplemental Executive Retirement Plan, as amended and restated effective July 26, 2022 (the \"SERP\"). Mr. Butler is therefore reporting the disposition of 6,094 performance stock units in exchange for an equal number of shares of deferred stock units under the SERP, which are payable upon Mr. Butler's termination of employment."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"In connection with the vesting of performance stock units previously granted on August 16, 2023, Mr. Butler's receipt of 6,094 shares of common stock was deferred resulting in Mr. Butler's receipt instead of 6,094 shares of deferred stock units into the First Financial Bankshares, Inc. Supplemental Executive Retirement Plan, as amended and restated effective July 26, 2022 (the \"SERP\"). Mr. Butler is therefore reporting the disposition of 6,094 performance stock units in exchange for an equal number of shares of deferred stock units under the SERP, which are payable upon Mr. Butler's termination of employment."}],"balance_after":170952,"source":{"system":"sec-edgar","filing":"0001193125-26-111084","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/36029/000119312526111084/ownership.xml","form_type":"4"}},{"id":840726,"issuer":{"id":3952,"kind":"organization","name":"FIRST FINANCIAL BANKSHARES INC","symbol":"FFIN"},"owners":[{"id":22667,"kind":"person","name":"Butler Ronald David II","position":1,"cik":"0001554713","reported_name":"Butler Ronald David II","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CAO"}}],"security":"Common Stock","published_at":"2026-03-17T20:54:36.000Z","date":"2026-03-13","kind":"grant","planned":false,"acquired":true,"shares":6094,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents shares of common stock issued upon the vesting of outstanding performance stock units that were subject to performance criteria other than the issuer's stock price."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Represents shares of common stock issued upon the vesting of outstanding performance stock units that were subject to performance criteria other than the issuer's stock price."}],"balance_after":177046,"source":{"system":"sec-edgar","filing":"0001193125-26-111084","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/36029/000119312526111084/ownership.xml","form_type":"4"}},{"id":989492,"issuer":{"id":3952,"kind":"organization","name":"FIRST FINANCIAL BANKSHARES INC","symbol":"FFIN"},"owners":[{"id":22667,"kind":"person","name":"Butler Ronald David II","position":1,"cik":"0001554713","reported_name":"Butler Ronald David II","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CAO"}}],"security":"Common Stock","published_at":"2025-11-25T21:20:51.000Z","date":"2025-11-24","kind":"gift","planned":false,"acquired":false,"shares":1179,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"This distribution was a charitable gift to a nonprofit foundation."}],"balance_after":170952,"source":{"system":"sec-edgar","filing":"0001193125-25-297268","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/36029/000119312525297268/ownership.xml","form_type":"4"}},{"id":1063350,"issuer":{"id":3952,"kind":"organization","name":"FIRST FINANCIAL BANKSHARES INC","symbol":"FFIN"},"owners":[{"id":22667,"kind":"person","name":"Butler Ronald David II","position":1,"cik":"0001554713","reported_name":"Butler Ronald David II","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CAO"}}],"security":"Deferred Stock Unit","published_at":"2025-08-19T19:46:55.000Z","date":"2025-08-16","kind":"grant","planned":false,"acquired":true,"shares":1919,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"In connection with the vesting on August 16, 2025, of 1,919 restricted stock units previously granted to the reporting person, the reporting person's receipt of 1,919 shares of common stock was deferred resulting in the reporting person's receipt instead of 1,919 shares of deferred stock units into the First Financial Bankshares, Inc. Supplemental Executive Retirement Plan, as amended and restated effected July 26, 2022 (the \"SERP\"). The reporting person is therefore reporting the disposition of 1,919 restricted stock units in exchange for an equal number of deferred stock units under the SERP, which are payable upon the reporting person's termination."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"In connection with the vesting on August 16, 2025, of 1,919 restricted stock units previously granted to the reporting person, the reporting person's receipt of 1,919 shares of common stock was deferred resulting in the reporting person's receipt instead of 1,919 shares of deferred stock units into the First Financial Bankshares, Inc. Supplemental Executive Retirement Plan, as amended and restated effected July 26, 2022 (the \"SERP\"). The reporting person is therefore reporting the disposition of 1,919 restricted stock units in exchange for an equal number of deferred stock units under the SERP, which are payable upon the reporting person's termination."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"In connection with the vesting on August 16, 2025, of 1,919 restricted stock units previously granted to the reporting person, the reporting person's receipt of 1,919 shares of common stock was deferred resulting in the reporting person's receipt instead of 1,919 shares of deferred stock units into the First Financial Bankshares, Inc. Supplemental Executive Retirement Plan, as amended and restated effected July 26, 2022 (the \"SERP\"). The reporting person is therefore reporting the disposition of 1,919 restricted stock units in exchange for an equal number of deferred stock units under the SERP, which are payable upon the reporting person's termination."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F1","text":"In connection with the vesting on August 16, 2025, of 1,919 restricted stock units previously granted to the reporting person, the reporting person's receipt of 1,919 shares of common stock was deferred resulting in the reporting person's receipt instead of 1,919 shares of deferred stock units into the First Financial Bankshares, Inc. Supplemental Executive Retirement Plan, as amended and restated effected July 26, 2022 (the \"SERP\"). The reporting person is therefore reporting the disposition of 1,919 restricted stock units in exchange for an equal number of deferred stock units under the SERP, which are payable upon the reporting person's termination."}],"balance_after":8168,"derivative":{"underlying":"Common Stock","underlying_shares":1919},"source":{"system":"sec-edgar","filing":"0000950170-25-110056","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/36029/000095017025110056/ownership.xml","form_type":"4"}},{"id":1063349,"issuer":{"id":3952,"kind":"organization","name":"FIRST FINANCIAL BANKSHARES INC","symbol":"FFIN"},"owners":[{"id":22667,"kind":"person","name":"Butler Ronald David II","position":1,"cik":"0001554713","reported_name":"Butler Ronald David II","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CAO"}}],"security":"Common Stock","published_at":"2025-08-19T19:46:55.000Z","date":"2025-08-16","kind":"disposition_to_issuer","planned":false,"acquired":false,"shares":1919,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"In connection with the vesting on August 16, 2025, of 1,919 restricted stock units previously granted to the reporting person, the reporting person's receipt of 1,919 shares of common stock was deferred resulting in the reporting person's receipt instead of 1,919 shares of deferred stock units into the First Financial Bankshares, Inc. Supplemental Executive Retirement Plan, as amended and restated effected July 26, 2022 (the \"SERP\"). The reporting person is therefore reporting the disposition of 1,919 restricted stock units in exchange for an equal number of deferred stock units under the SERP, which are payable upon the reporting person's termination."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"In connection with the vesting on August 16, 2025, of 1,919 restricted stock units previously granted to the reporting person, the reporting person's receipt of 1,919 shares of common stock was deferred resulting in the reporting person's receipt instead of 1,919 shares of deferred stock units into the First Financial Bankshares, Inc. Supplemental Executive Retirement Plan, as amended and restated effected July 26, 2022 (the \"SERP\"). The reporting person is therefore reporting the disposition of 1,919 restricted stock units in exchange for an equal number of deferred stock units under the SERP, which are payable upon the reporting person's termination."}],"balance_after":172131,"source":{"system":"sec-edgar","filing":"0000950170-25-110056","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/36029/000095017025110056/ownership.xml","form_type":"4"}},{"id":1064861,"issuer":{"id":3952,"kind":"organization","name":"FIRST FINANCIAL BANKSHARES INC","symbol":"FFIN"},"owners":[{"id":22667,"kind":"person","name":"Butler Ronald David II","position":1,"cik":"0001554713","reported_name":"Butler Ronald David II","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CAO"}}],"security":"Deferred Stock Unit","published_at":"2025-08-18T18:54:33.000Z","date":"2025-08-14","kind":"grant","planned":false,"acquired":true,"shares":1222,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"In connection with the vesting on August 14, 2025, of 1,222 restricted stock units previously granted to the reporting person, the reporting person's receipt of 1,222 shares of common stock was deferred resulting in the reporting person's receipt instead of 1,222 shares of deferred stock units into the First Financial Bankshares, Inc. Supplemental Executive Retirement Plan, as amended and restated effected July 26, 2022 (the \"SERP\"). The reporting person is therefore reporting the disposition of 1,222 restricted stock units in exchange for an equal number of deferred stock units under the SERP, which are payable upon the reporting person's termination."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"In connection with the vesting on August 14, 2025, of 1,222 restricted stock units previously granted to the reporting person, the reporting person's receipt of 1,222 shares of common stock was deferred resulting in the reporting person's receipt instead of 1,222 shares of deferred stock units into the First Financial Bankshares, Inc. Supplemental Executive Retirement Plan, as amended and restated effected July 26, 2022 (the \"SERP\"). The reporting person is therefore reporting the disposition of 1,222 restricted stock units in exchange for an equal number of deferred stock units under the SERP, which are payable upon the reporting person's termination."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"In connection with the vesting on August 14, 2025, of 1,222 restricted stock units previously granted to the reporting person, the reporting person's receipt of 1,222 shares of common stock was deferred resulting in the reporting person's receipt instead of 1,222 shares of deferred stock units into the First Financial Bankshares, Inc. Supplemental Executive Retirement Plan, as amended and restated effected July 26, 2022 (the \"SERP\"). The reporting person is therefore reporting the disposition of 1,222 restricted stock units in exchange for an equal number of deferred stock units under the SERP, which are payable upon the reporting person's termination."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"In connection with the vesting on August 14, 2025, of 1,222 restricted stock units previously granted to the reporting person, the reporting person's receipt of 1,222 shares of common stock was deferred resulting in the reporting person's receipt instead of 1,222 shares of deferred stock units into the First Financial Bankshares, Inc. Supplemental Executive Retirement Plan, as amended and restated effected July 26, 2022 (the \"SERP\"). The reporting person is therefore reporting the disposition of 1,222 restricted stock units in exchange for an equal number of deferred stock units under the SERP, which are payable upon the reporting person's termination."}],"balance_after":6249,"derivative":{"underlying":"Common Stock","underlying_shares":1222},"source":{"system":"sec-edgar","filing":"0000950170-25-109643","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/36029/000095017025109643/ownership.xml","form_type":"4"}},{"id":1064860,"issuer":{"id":3952,"kind":"organization","name":"FIRST FINANCIAL BANKSHARES INC","symbol":"FFIN"},"owners":[{"id":22667,"kind":"person","name":"Butler Ronald David II","position":1,"cik":"0001554713","reported_name":"Butler Ronald David II","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CAO"}}],"security":"Employee Stock Option, Right to Buy","published_at":"2025-08-18T18:54:33.000Z","date":"2025-08-14","kind":"grant","planned":false,"acquired":true,"shares":11615,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"The options vest 33.33% after one year from the grant date, 66.66% after the second year, and 100% after the third year."}],"balance_after":11615,"derivative":{"exercise_price":36.43,"expiration_date":"2035-08-14","underlying":"Common Stock","underlying_shares":11615},"source":{"system":"sec-edgar","filing":"0000950170-25-109643","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/36029/000095017025109643/ownership.xml","form_type":"4"}},{"id":1064859,"issuer":{"id":3952,"kind":"organization","name":"FIRST FINANCIAL BANKSHARES INC","symbol":"FFIN"},"owners":[{"id":22667,"kind":"person","name":"Butler Ronald David II","position":1,"cik":"0001554713","reported_name":"Butler Ronald David II","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CAO"}}],"security":"Common Stock","published_at":"2025-08-18T18:54:33.000Z","date":"2025-08-14","kind":"disposition_to_issuer","planned":false,"acquired":false,"shares":1222,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F2","text":"In connection with the vesting on August 14, 2025, of 1,222 restricted stock units previously granted to the reporting person, the reporting person's receipt of 1,222 shares of common stock was deferred resulting in the reporting person's receipt instead of 1,222 shares of deferred stock units into the First Financial Bankshares, Inc. Supplemental Executive Retirement Plan, as amended and restated effected July 26, 2022 (the \"SERP\"). The reporting person is therefore reporting the disposition of 1,222 restricted stock units in exchange for an equal number of deferred stock units under the SERP, which are payable upon the reporting person's termination."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"In connection with the vesting on August 14, 2025, of 1,222 restricted stock units previously granted to the reporting person, the reporting person's receipt of 1,222 shares of common stock was deferred resulting in the reporting person's receipt instead of 1,222 shares of deferred stock units into the First Financial Bankshares, Inc. Supplemental Executive Retirement Plan, as amended and restated effected July 26, 2022 (the \"SERP\"). The reporting person is therefore reporting the disposition of 1,222 restricted stock units in exchange for an equal number of deferred stock units under the SERP, which are payable upon the reporting person's termination."}],"balance_after":174050,"source":{"system":"sec-edgar","filing":"0000950170-25-109643","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/36029/000095017025109643/ownership.xml","form_type":"4"}},{"id":1064858,"issuer":{"id":3952,"kind":"organization","name":"FIRST FINANCIAL BANKSHARES INC","symbol":"FFIN"},"owners":[{"id":22667,"kind":"person","name":"Butler Ronald David II","position":1,"cik":"0001554713","reported_name":"Butler Ronald David II","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CAO"}}],"security":"Common Stock","published_at":"2025-08-18T18:54:33.000Z","date":"2025-08-14","kind":"grant","planned":false,"acquired":true,"shares":3458,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Reflects grant of restricted stock units (RSUs) which vest in three approximately equal installments on each of the three anniversaries of the grant date."}],"balance_after":175272,"source":{"system":"sec-edgar","filing":"0000950170-25-109643","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/36029/000095017025109643/ownership.xml","form_type":"4"}},{"id":1078836,"issuer":{"id":3952,"kind":"organization","name":"FIRST FINANCIAL BANKSHARES INC","symbol":"FFIN"},"owners":[{"id":22667,"kind":"person","name":"Butler Ronald David II","position":1,"cik":"0001554713","reported_name":"Butler Ronald David II","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CAO"}}],"security":"Employee Stock Option, Right to Buy","published_at":"2025-07-31T18:56:04.000Z","date":"2025-07-29","kind":"exercise","planned":false,"acquired":false,"shares":10150,"price":16.95,"value":172042.5,"ownership":{"direct":true},"balance_after":0,"derivative":{"exercise_price":16.95,"exercise_date":"2021-10-27","expiration_date":"2025-10-27","underlying":"Common Stock","underlying_shares":10150},"source":{"system":"sec-edgar","filing":"0000950170-25-100830","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/36029/000095017025100830/ownership.xml","form_type":"4"}},{"id":1078835,"issuer":{"id":3952,"kind":"organization","name":"FIRST FINANCIAL BANKSHARES INC","symbol":"FFIN"},"owners":[{"id":22667,"kind":"person","name":"Butler Ronald David II","position":1,"cik":"0001554713","reported_name":"Butler Ronald David II","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CAO"}}],"security":"Common Stock","published_at":"2025-07-31T18:56:04.000Z","date":"2025-07-29","kind":"exercise","planned":false,"acquired":true,"shares":10150,"price":16.95,"value":172042.5,"ownership":{"direct":true},"balance_after":171814,"source":{"system":"sec-edgar","filing":"0000950170-25-100830","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/36029/000095017025100830/ownership.xml","form_type":"4"}},{"id":1192996,"issuer":{"id":3952,"kind":"organization","name":"FIRST FINANCIAL BANKSHARES INC","symbol":"FFIN"},"owners":[{"id":22667,"kind":"person","name":"Butler Ronald David II","position":1,"cik":"0001554713","reported_name":"Butler Ronald David II","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CAO"}}],"security":"Deferred Stock Units","published_at":"2025-03-25T20:34:56.000Z","date":"2025-03-21","kind":"grant","planned":false,"acquired":true,"shares":2542,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"In connection with the vesting of performance stock units previously granted on August 16, 2022, Mr. Butler's receipt of 2,542 shares of common stock was deferred resulting in Mr. Butler's receipt instead of 2,542 shares of deferred stock units into the First Financial Bankshares, Inc. Supplemental Executive Retirement Plan, as amended and restated effective July 26, 2022 (the \"SERP\"). Mr. Butler is therefore reporting the disposition of 2,542 performance stock units in exchange for an equal number of shares of deferred stock units under the SERP, which are payable upon Mr. Butler's termination of employment."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"In connection with the vesting of performance stock units previously granted on August 16, 2022, Mr. Butler's receipt of 2,542 shares of common stock was deferred resulting in Mr. Butler's receipt instead of 2,542 shares of deferred stock units into the First Financial Bankshares, Inc. Supplemental Executive Retirement Plan, as amended and restated effective July 26, 2022 (the \"SERP\"). Mr. Butler is therefore reporting the disposition of 2,542 performance stock units in exchange for an equal number of shares of deferred stock units under the SERP, which are payable upon Mr. Butler's termination of employment."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"In connection with the vesting of performance stock units previously granted on August 16, 2022, Mr. Butler's receipt of 2,542 shares of common stock was deferred resulting in Mr. Butler's receipt instead of 2,542 shares of deferred stock units into the First Financial Bankshares, Inc. Supplemental Executive Retirement Plan, as amended and restated effective July 26, 2022 (the \"SERP\"). Mr. Butler is therefore reporting the disposition of 2,542 performance stock units in exchange for an equal number of shares of deferred stock units under the SERP, which are payable upon Mr. Butler's termination of employment."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"In connection with the vesting of performance stock units previously granted on August 16, 2022, Mr. Butler's receipt of 2,542 shares of common stock was deferred resulting in Mr. Butler's receipt instead of 2,542 shares of deferred stock units into the First Financial Bankshares, Inc. Supplemental Executive Retirement Plan, as amended and restated effective July 26, 2022 (the \"SERP\"). Mr. Butler is therefore reporting the disposition of 2,542 performance stock units in exchange for an equal number of shares of deferred stock units under the SERP, which are payable upon Mr. Butler's termination of employment."}],"balance_after":5027,"derivative":{"underlying":"Common Stock","underlying_shares":2542},"source":{"system":"sec-edgar","filing":"0000950170-25-044454","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/36029/000095017025044454/ownership.xml","form_type":"4"}},{"id":1192995,"issuer":{"id":3952,"kind":"organization","name":"FIRST FINANCIAL BANKSHARES INC","symbol":"FFIN"},"owners":[{"id":22667,"kind":"person","name":"Butler Ronald David II","position":1,"cik":"0001554713","reported_name":"Butler Ronald David II","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CAO"}}],"security":"Common Stock","published_at":"2025-03-25T20:34:56.000Z","date":"2025-03-21","kind":"disposition_to_issuer","planned":false,"acquired":false,"shares":2542,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F2","text":"In connection with the vesting of performance stock units previously granted on August 16, 2022, Mr. Butler's receipt of 2,542 shares of common stock was deferred resulting in Mr. Butler's receipt instead of 2,542 shares of deferred stock units into the First Financial Bankshares, Inc. Supplemental Executive Retirement Plan, as amended and restated effective July 26, 2022 (the \"SERP\"). Mr. Butler is therefore reporting the disposition of 2,542 performance stock units in exchange for an equal number of shares of deferred stock units under the SERP, which are payable upon Mr. Butler's termination of employment."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"In connection with the vesting of performance stock units previously granted on August 16, 2022, Mr. Butler's receipt of 2,542 shares of common stock was deferred resulting in Mr. Butler's receipt instead of 2,542 shares of deferred stock units into the First Financial Bankshares, Inc. Supplemental Executive Retirement Plan, as amended and restated effective July 26, 2022 (the \"SERP\"). Mr. Butler is therefore reporting the disposition of 2,542 performance stock units in exchange for an equal number of shares of deferred stock units under the SERP, which are payable upon Mr. Butler's termination of employment."}],"balance_after":161664,"source":{"system":"sec-edgar","filing":"0000950170-25-044454","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/36029/000095017025044454/ownership.xml","form_type":"4"}},{"id":1192994,"issuer":{"id":3952,"kind":"organization","name":"FIRST FINANCIAL BANKSHARES INC","symbol":"FFIN"},"owners":[{"id":22667,"kind":"person","name":"Butler Ronald David II","position":1,"cik":"0001554713","reported_name":"Butler Ronald David II","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CAO"}}],"security":"Common 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price."}],"balance_after":164206,"source":{"system":"sec-edgar","filing":"0000950170-25-044454","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/36029/000095017025044454/ownership.xml","form_type":"4"}},{"id":1370608,"issuer":{"id":3952,"kind":"organization","name":"FIRST FINANCIAL BANKSHARES INC","symbol":"FFIN"},"owners":[{"id":22667,"kind":"person","name":"Butler Ronald David II","position":1,"cik":"0001554713","reported_name":"Butler Ronald David II","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CAO"}}],"security":"Common 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II","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CAO"}}],"security":"Common Stock","published_at":"2024-08-30T21:20:07.000Z","date":"2024-08-29","kind":"exercise","planned":false,"acquired":true,"shares":9850,"price":16.95,"value":166957.5,"ownership":{"direct":true},"balance_after":162664,"source":{"system":"sec-edgar","filing":"0000950170-24-102446","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/36029/000095017024102446/ownership.xml","form_type":"4"}},{"id":1428576,"issuer":{"id":3952,"kind":"organization","name":"FIRST FINANCIAL BANKSHARES INC","symbol":"FFIN"},"owners":[{"id":22667,"kind":"person","name":"Butler Ronald David II","position":1,"cik":"0001554713","reported_name":"Butler Ronald David II","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CAO"}}],"security":"Deferred Stock Units","published_at":"2024-08-20T21:25:24.000Z","date":"2024-08-16","kind":"grant","planned":false,"acquired":true,"shares":1920,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"In connection with the vesting on August 16, 2024, of 1,920 restricted stock units previously granted to Mr. Butler, Mr. Butler's receipt of 1,920 shares of common stock was deferred resulting in Mr. Butler's receipt instead of 1,920 shares of deferred stock units into the First Financial Bankshares, Inc. Supplemental Executive Retirement Plan, as amended and restated effective July 26, 2022 (the \"SERP\"). Mr. Butler is therefore reporting the disposition of 1,920 restricted stock units in exchange for an equal number of shares of deferred stock units under the SERP, which are payable upon Mr. Butler's termination of employment."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"In connection with the vesting on August 16, 2024, of 1,920 restricted stock units previously granted to Mr. Butler, Mr. Butler's receipt of 1,920 shares of common stock was deferred resulting in Mr. Butler's receipt instead of 1,920 shares of deferred stock units into the First Financial Bankshares, Inc. Supplemental Executive Retirement Plan, as amended and restated effective July 26, 2022 (the \"SERP\"). Mr. Butler is therefore reporting the disposition of 1,920 restricted stock units in exchange for an equal number of shares of deferred stock units under the SERP, which are payable upon Mr. Butler's termination of employment."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"In connection with the vesting on August 16, 2024, of 1,920 restricted stock units previously granted to Mr. Butler, Mr. Butler's receipt of 1,920 shares of common stock was deferred resulting in Mr. Butler's receipt instead of 1,920 shares of deferred stock units into the First Financial Bankshares, Inc. Supplemental Executive Retirement Plan, as amended and restated effective July 26, 2022 (the \"SERP\"). Mr. Butler is therefore reporting the disposition of 1,920 restricted stock units in exchange for an equal number of shares of deferred stock units under the SERP, which are payable upon Mr. Butler's termination of employment."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"In connection with the vesting on August 16, 2024, of 1,920 restricted stock units previously granted to Mr. Butler, Mr. Butler's receipt of 1,920 shares of common stock was deferred resulting in Mr. Butler's receipt instead of 1,920 shares of deferred stock units into the First Financial Bankshares, Inc. Supplemental Executive Retirement Plan, as amended and restated effective July 26, 2022 (the \"SERP\"). Mr. Butler is therefore reporting the disposition of 1,920 restricted stock units in exchange for an equal number of shares of deferred stock units under the SERP, which are payable upon Mr. Butler's termination of employment."}],"balance_after":2485,"derivative":{"underlying":"Common Stock","underlying_shares":1920},"source":{"system":"sec-edgar","filing":"0000950170-24-099235","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/36029/000095017024099235/ownership.xml","form_type":"4"}},{"id":1428575,"issuer":{"id":3952,"kind":"organization","name":"FIRST FINANCIAL BANKSHARES INC","symbol":"FFIN"},"owners":[{"id":22667,"kind":"person","name":"Butler Ronald David II","position":1,"cik":"0001554713","reported_name":"Butler Ronald David II","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CAO"}}],"security":"Common Stock","published_at":"2024-08-20T21:25:24.000Z","date":"2024-08-16","kind":"disposition_to_issuer","planned":false,"acquired":false,"shares":1920,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F2","text":"In connection with the vesting on August 16, 2024, of 1,920 restricted stock units previously granted to Mr. Butler, Mr. Butler's receipt of 1,920 shares of common stock was deferred resulting in Mr. Butler's receipt instead of 1,920 shares of deferred stock units into the First Financial Bankshares, Inc. Supplemental Executive Retirement Plan, as amended and restated effective July 26, 2022 (the \"SERP\"). Mr. Butler is therefore reporting the disposition of 1,920 restricted stock units in exchange for an equal number of shares of deferred stock units under the SERP, which are payable upon Mr. Butler's termination of employment."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"In connection with the vesting on August 16, 2024, of 1,920 restricted stock units previously granted to Mr. Butler, Mr. Butler's receipt of 1,920 shares of common stock was deferred resulting in Mr. Butler's receipt instead of 1,920 shares of deferred stock units into the First Financial Bankshares, Inc. Supplemental Executive Retirement Plan, as amended and restated effective July 26, 2022 (the \"SERP\"). Mr. Butler is therefore reporting the disposition of 1,920 restricted stock units in exchange for an equal number of shares of deferred stock units under the SERP, which are payable upon Mr. Butler's termination of employment."}],"balance_after":152814,"source":{"system":"sec-edgar","filing":"0000950170-24-099235","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/36029/000095017024099235/ownership.xml","form_type":"4"}},{"id":1428574,"issuer":{"id":3952,"kind":"organization","name":"FIRST FINANCIAL BANKSHARES INC","symbol":"FFIN"},"owners":[{"id":22667,"kind":"person","name":"Butler Ronald David II","position":1,"cik":"0001554713","reported_name":"Butler Ronald David II","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CAO"}}],"security":"Common 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Mr. Butler is therefore reporting the disposition of 565 restricted stock units in exchange for an equal number of shares of deferred stock units under the SERP, which are payable upon Mr. Butler's termination of employment."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"In connection with the vesting on August 16, 2023, of 565 restricted stock units previously granted to Mr. Butler on August 16, 2022, Mr. Butler's receipt of 565 shares of common stock was deferred resulting in Mr. Butler's receipt instead of 565 shares of deferred stock units into the First Financial Bankshares, Inc. Supplemental Executive Retirement Plan, as amended and restated effective July 26, 2022 (the \"SERP\"). 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