{"transactions":[{"id":684907,"issuer":{"id":3952,"kind":"organization","name":"FIRST FINANCIAL BANKSHARES INC","symbol":"FFIN"},"owners":[{"id":22669,"kind":"person","name":"Roewe Randall Allen","position":1,"cik":"0001642844","reported_name":"Roewe Randall Allen","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP, Chief Risk Officer"}}],"security":"Deferred Stock Units","published_at":"2026-08-18T20:38:02.000Z","date":"2026-08-16","kind":"grant","planned":false,"acquired":true,"shares":564,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F3","text":"In connection with the vesting on August 16, 2026, of 564 restricted stock units previously granted to the reporting person, the reporting person's receipt of 564 shares of common stock was deferred resulting in the reporting person's receipt instead of 564 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 564 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":"F3","text":"In connection with the vesting on August 16, 2026, of 564 restricted stock units previously granted to the reporting person, the reporting person's receipt of 564 shares of common stock was deferred resulting in the reporting person's receipt instead of 564 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 564 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":"F3","text":"In connection with the vesting on August 16, 2026, of 564 restricted stock units previously granted to the reporting person, the reporting person's receipt of 564 shares of common stock was deferred resulting in the reporting person's receipt instead of 564 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 564 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":"F3","text":"In connection with the vesting on August 16, 2026, of 564 restricted stock units previously granted to the reporting person, the reporting person's receipt of 564 shares of common stock was deferred resulting in the reporting person's receipt instead of 564 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 564 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":7960,"derivative":{"underlying":"Common Stock","underlying_shares":564},"source":{"system":"sec-edgar","filing":"0001193125-26-355596","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/36029/000119312526355596/ownership.xml","form_type":"4"}},{"id":684906,"issuer":{"id":3952,"kind":"organization","name":"FIRST FINANCIAL BANKSHARES INC","symbol":"FFIN"},"owners":[{"id":22669,"kind":"person","name":"Roewe Randall Allen","position":1,"cik":"0001642844","reported_name":"Roewe Randall Allen","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP, Chief Risk Officer"}}],"security":"Deferred Stock Units","published_at":"2026-08-18T20:38:02.000Z","date":"2026-08-14","kind":"grant","planned":false,"acquired":true,"shares":1100,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"In connection with the vesting on August 14, 2026, of 1,100 restricted stock units previously granted to the reporting person, the reporting person's receipt of 1,100 shares of common stock was deferred resulting in the reporting person's receipt instead of 1,100 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 1,100 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, 2026, of 1,100 restricted stock units previously granted to the reporting person, the reporting person's receipt of 1,100 shares of common stock was deferred resulting in the reporting person's receipt instead of 1,100 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 1,100 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, 2026, of 1,100 restricted stock units previously granted to the reporting person, the reporting person's receipt of 1,100 shares of common stock was deferred resulting in the reporting person's receipt instead of 1,100 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 1,100 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, 2026, of 1,100 restricted stock units previously granted to the reporting person, the reporting person's receipt of 1,100 shares of common stock was deferred resulting in the reporting person's receipt instead of 1,100 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 1,100 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":7396,"derivative":{"underlying":"Common Stock","underlying_shares":1100},"source":{"system":"sec-edgar","filing":"0001193125-26-355596","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/36029/000119312526355596/ownership.xml","form_type":"4"}},{"id":684905,"issuer":{"id":3952,"kind":"organization","name":"FIRST FINANCIAL BANKSHARES INC","symbol":"FFIN"},"owners":[{"id":22669,"kind":"person","name":"Roewe Randall Allen","position":1,"cik":"0001642844","reported_name":"Roewe Randall Allen","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP, Chief Risk Officer"}}],"security":"Employee Stock Option, Right to Buy","published_at":"2026-08-18T20:38:02.000Z","date":"2026-08-14","kind":"grant","planned":false,"acquired":true,"shares":3684,"price":35.28,"value":129971.52,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F4","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":3684,"derivative":{"exercise_price":35.28,"expiration_date":"2036-08-14","underlying":"Common Stock","underlying_shares":3684},"source":{"system":"sec-edgar","filing":"0001193125-26-355596","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/36029/000119312526355596/ownership.xml","form_type":"4"}},{"id":684904,"issuer":{"id":3952,"kind":"organization","name":"FIRST FINANCIAL BANKSHARES INC","symbol":"FFIN"},"owners":[{"id":22669,"kind":"person","name":"Roewe Randall Allen","position":1,"cik":"0001642844","reported_name":"Roewe Randall Allen","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP, Chief Risk Officer"}}],"security":"Common Stock","published_at":"2026-08-18T20:38:02.000Z","date":"2026-08-16","kind":"disposition_to_issuer","planned":false,"acquired":false,"shares":564,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F3","text":"In connection with the vesting on August 16, 2026, of 564 restricted stock units previously granted to the reporting person, the reporting person's receipt of 564 shares of common stock was deferred resulting in the reporting person's receipt instead of 564 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 564 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":"F3","text":"In connection with the vesting on August 16, 2026, of 564 restricted stock units previously granted to the reporting person, the reporting person's receipt of 564 shares of common stock was deferred resulting in the reporting person's receipt instead of 564 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 564 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":33635,"source":{"system":"sec-edgar","filing":"0001193125-26-355596","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/36029/000119312526355596/ownership.xml","form_type":"4"}},{"id":684903,"issuer":{"id":3952,"kind":"organization","name":"FIRST FINANCIAL BANKSHARES INC","symbol":"FFIN"},"owners":[{"id":22669,"kind":"person","name":"Roewe Randall Allen","position":1,"cik":"0001642844","reported_name":"Roewe Randall Allen","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP, Chief Risk Officer"}}],"security":"Common Stock","published_at":"2026-08-18T20:38:02.000Z","date":"2026-08-14","kind":"disposition_to_issuer","planned":false,"acquired":false,"shares":1100,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F2","text":"In connection with the vesting on August 14, 2026, of 1,100 restricted stock units previously granted to the reporting person, the reporting person's receipt of 1,100 shares of common stock was deferred resulting in the reporting person's receipt instead of 1,100 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 1,100 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, 2026, of 1,100 restricted stock units previously granted to the reporting person, the reporting person's receipt of 1,100 shares of common stock was deferred resulting in the reporting person's receipt instead of 1,100 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 1,100 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":34199,"source":{"system":"sec-edgar","filing":"0001193125-26-355596","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/36029/000119312526355596/ownership.xml","form_type":"4"}},{"id":684902,"issuer":{"id":3952,"kind":"organization","name":"FIRST FINANCIAL BANKSHARES INC","symbol":"FFIN"},"owners":[{"id":22669,"kind":"person","name":"Roewe Randall Allen","position":1,"cik":"0001642844","reported_name":"Roewe Randall Allen","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP, Chief Risk Officer"}}],"security":"Common Stock","published_at":"2026-08-18T20:38:02.000Z","date":"2026-08-14","kind":"grant","planned":false,"acquired":true,"shares":1984,"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":35299,"source":{"system":"sec-edgar","filing":"0001193125-26-355596","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/36029/000119312526355596/ownership.xml","form_type":"4"}},{"id":840737,"issuer":{"id":3952,"kind":"organization","name":"FIRST FINANCIAL BANKSHARES INC","symbol":"FFIN"},"owners":[{"id":22669,"kind":"person","name":"Roewe Randall Allen","position":1,"cik":"0001642844","reported_name":"Roewe Randall Allen","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Risk Officer"}}],"security":"Deferred Stock Units","published_at":"2026-03-17T21:03:19.000Z","date":"2026-03-13","kind":"grant","planned":false,"acquired":true,"shares":2539,"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. Roewe's receipt of 2,539 shares of common stock was deferred resulting in Mr. Roewe's receipt instead of 2,539 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. Roewe is therefore reporting the disposition of 2,539 performance stock units in exchange for an equal number of shares of deferred stock units under the SERP, which are payable upon Mr. Roewe'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. Roewe's receipt of 2,539 shares of common stock was deferred resulting in Mr. Roewe's receipt instead of 2,539 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. Roewe is therefore reporting the disposition of 2,539 performance stock units in exchange for an equal number of shares of deferred stock units under the SERP, which are payable upon Mr. Roewe'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. Roewe's receipt of 2,539 shares of common stock was deferred resulting in Mr. Roewe's receipt instead of 2,539 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. Roewe is therefore reporting the disposition of 2,539 performance stock units in exchange for an equal number of shares of deferred stock units under the SERP, which are payable upon Mr. Roewe'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. Roewe's receipt of 2,539 shares of common stock was deferred resulting in Mr. Roewe's receipt instead of 2,539 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. Roewe is therefore reporting the disposition of 2,539 performance stock units in exchange for an equal number of shares of deferred stock units under the SERP, which are payable upon Mr. Roewe's termination of employment."}],"balance_after":6296,"derivative":{"underlying":"Common Stock","underlying_shares":2539},"source":{"system":"sec-edgar","filing":"0001193125-26-111136","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/36029/000119312526111136/ownership.xml","form_type":"4"}},{"id":840736,"issuer":{"id":3952,"kind":"organization","name":"FIRST FINANCIAL BANKSHARES INC","symbol":"FFIN"},"owners":[{"id":22669,"kind":"person","name":"Roewe Randall Allen","position":1,"cik":"0001642844","reported_name":"Roewe Randall Allen","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Risk Officer"}}],"security":"Common Stock","published_at":"2026-03-17T21:03:19.000Z","date":"2026-03-13","kind":"disposition_to_issuer","planned":false,"acquired":false,"shares":2539,"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. Roewe's receipt of 2,539 shares of common stock was deferred resulting in Mr. Roewe's receipt instead of 2,539 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. Roewe is therefore reporting the disposition of 2,539 performance stock units in exchange for an equal number of shares of deferred stock units under the SERP, which are payable upon Mr. Roewe'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. Roewe's receipt of 2,539 shares of common stock was deferred resulting in Mr. Roewe's receipt instead of 2,539 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. Roewe is therefore reporting the disposition of 2,539 performance stock units in exchange for an equal number of shares of deferred stock units under the SERP, which are payable upon Mr. Roewe's termination of employment."}],"balance_after":33315,"source":{"system":"sec-edgar","filing":"0001193125-26-111136","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/36029/000119312526111136/ownership.xml","form_type":"4"}},{"id":840735,"issuer":{"id":3952,"kind":"organization","name":"FIRST FINANCIAL BANKSHARES INC","symbol":"FFIN"},"owners":[{"id":22669,"kind":"person","name":"Roewe Randall Allen","position":1,"cik":"0001642844","reported_name":"Roewe Randall Allen","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Risk Officer"}}],"security":"Common Stock","published_at":"2026-03-17T21:03:19.000Z","date":"2026-03-13","kind":"grant","planned":false,"acquired":true,"shares":2539,"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":35854,"source":{"system":"sec-edgar","filing":"0001193125-26-111136","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/36029/000119312526111136/ownership.xml","form_type":"4"}},{"id":1063352,"issuer":{"id":3952,"kind":"organization","name":"FIRST FINANCIAL BANKSHARES INC","symbol":"FFIN"},"owners":[{"id":22669,"kind":"person","name":"Roewe Randall Allen","position":1,"cik":"0001642844","reported_name":"Roewe Randall Allen","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Risk Officer"}}],"security":"Deferred Stock Units","published_at":"2025-08-19T19:49:12.000Z","date":"2025-08-16","kind":"grant","planned":false,"acquired":true,"shares":839,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"In connection with the vesting on August 16, 2025, of 839 restricted stock units previously granted to the reporting person, the reporting person's receipt of 839 shares of common stock was deferred resulting in the reporting person's receipt instead of 839 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 839 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 839 restricted stock units previously granted to the reporting person, the reporting person's receipt of 839 shares of common stock was deferred resulting in the reporting person's receipt instead of 839 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 839 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 839 restricted stock units previously granted to the reporting person, the reporting person's receipt of 839 shares of common stock was deferred resulting in the reporting person's receipt instead of 839 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 839 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 839 restricted stock units previously granted to the reporting person, the reporting person's receipt of 839 shares of common stock was deferred resulting in the reporting person's receipt instead of 839 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 839 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":3757,"derivative":{"underlying":"Common Stock","underlying_shares":839},"source":{"system":"sec-edgar","filing":"0000950170-25-110058","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/36029/000095017025110058/ownership.xml","form_type":"4"}},{"id":1063351,"issuer":{"id":3952,"kind":"organization","name":"FIRST FINANCIAL BANKSHARES INC","symbol":"FFIN"},"owners":[{"id":22669,"kind":"person","name":"Roewe Randall Allen","position":1,"cik":"0001642844","reported_name":"Roewe Randall Allen","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Risk Officer"}}],"security":"Common Stock","published_at":"2025-08-19T19:49:12.000Z","date":"2025-08-16","kind":"disposition_to_issuer","planned":false,"acquired":false,"shares":839,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"In connection with the vesting on August 16, 2025, of 839 restricted stock units previously granted to the reporting person, the reporting person's receipt of 839 shares of common stock was deferred resulting in the reporting person's receipt instead of 839 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 839 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 839 restricted stock units previously granted to the reporting person, the reporting person's receipt of 839 shares of common stock was deferred resulting in the reporting person's receipt instead of 839 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 839 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":33315,"source":{"system":"sec-edgar","filing":"0000950170-25-110058","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/36029/000095017025110058/ownership.xml","form_type":"4"}},{"id":1064877,"issuer":{"id":3952,"kind":"organization","name":"FIRST FINANCIAL BANKSHARES INC","symbol":"FFIN"},"owners":[{"id":22669,"kind":"person","name":"Roewe Randall Allen","position":1,"cik":"0001642844","reported_name":"Roewe Randall Allen","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Risk Officer"}}],"security":"Deferred Stock Units","published_at":"2025-08-18T19:05:53.000Z","date":"2025-08-14","kind":"grant","planned":false,"acquired":true,"shares":566,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"In connection with the vesting on August 14, 2025, of 566 restricted stock units previously granted to the reporting person, the reporting person's receipt of 566 shares of common stock was deferred resulting in the reporting person's receipt instead of 566 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 566 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 566 restricted stock units previously granted to the reporting person, the reporting person's receipt of 566 shares of common stock was deferred resulting in the reporting person's receipt instead of 566 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 566 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 566 restricted stock units previously granted to the reporting person, the reporting person's receipt of 566 shares of common stock was deferred resulting in the reporting person's receipt instead of 566 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 566 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 566 restricted stock units previously granted to the reporting person, the reporting person's receipt of 566 shares of common stock was deferred resulting in the reporting person's receipt instead of 566 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 566 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":2918,"derivative":{"underlying":"Common Stock","underlying_shares":566},"source":{"system":"sec-edgar","filing":"0000950170-25-109655","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/36029/000095017025109655/ownership.xml","form_type":"4"}},{"id":1064876,"issuer":{"id":3952,"kind":"organization","name":"FIRST FINANCIAL BANKSHARES INC","symbol":"FFIN"},"owners":[{"id":22669,"kind":"person","name":"Roewe Randall Allen","position":1,"cik":"0001642844","reported_name":"Roewe Randall Allen","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Risk Officer"}}],"security":"Employee Stock Option, Right to Buy","published_at":"2025-08-18T19:05:53.000Z","date":"2025-08-14","kind":"grant","planned":false,"acquired":true,"shares":5377,"price":36.43,"value":195884.11,"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":5377,"derivative":{"exercise_price":36.43,"expiration_date":"2035-08-14","underlying":"Common Stock","underlying_shares":5377},"source":{"system":"sec-edgar","filing":"0000950170-25-109655","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/36029/000095017025109655/ownership.xml","form_type":"4"}},{"id":1064875,"issuer":{"id":3952,"kind":"organization","name":"FIRST FINANCIAL BANKSHARES INC","symbol":"FFIN"},"owners":[{"id":22669,"kind":"person","name":"Roewe Randall Allen","position":1,"cik":"0001642844","reported_name":"Roewe Randall Allen","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Risk Officer"}}],"security":"Common Stock","published_at":"2025-08-18T19:05:53.000Z","date":"2025-08-14","kind":"disposition_to_issuer","planned":false,"acquired":false,"shares":566,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F2","text":"In connection with the vesting on August 14, 2025, of 566 restricted stock units previously granted to the reporting person, the reporting person's receipt of 566 shares of common stock was deferred resulting in the reporting person's receipt instead of 566 shares of deferred stock units into the First Financial Bankshares, Inc. 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The reporting person is therefore reporting the disposition of 566 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":34154,"source":{"system":"sec-edgar","filing":"0000950170-25-109655","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/36029/000095017025109655/ownership.xml","form_type":"4"}},{"id":1064874,"issuer":{"id":3952,"kind":"organization","name":"FIRST FINANCIAL BANKSHARES INC","symbol":"FFIN"},"owners":[{"id":22669,"kind":"person","name":"Roewe Randall Allen","position":1,"cik":"0001642844","reported_name":"Roewe Randall Allen","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Risk Officer"}}],"security":"Common 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Supplemental Executive Retirement Plan, as amended and restated effective July 26, 2022 (the \"SERP\"). Mr. Roewe is therefore reporting the disposition of 1,237 performance stock units in exchange for an equal number of shares of deferred stock units under the SERP, which are payable upon Mr. Roewe'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. Roewe's receipt of 1,237 shares of common stock was deferred resulting in Mr. Roewe's receipt instead of 1,237 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. Roewe is therefore reporting the disposition of 1,237 performance stock units in exchange for an equal number of shares of deferred stock units under the SERP, which are payable upon Mr. Roewe'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. Roewe's receipt of 1,237 shares of common stock was deferred resulting in Mr. Roewe's receipt instead of 1,237 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. Roewe is therefore reporting the disposition of 1,237 performance stock units in exchange for an equal number of shares of deferred stock units under the SERP, which are payable upon Mr. Roewe'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. Roewe's receipt of 1,237 shares of common stock was deferred resulting in Mr. Roewe's receipt instead of 1,237 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. Roewe is therefore reporting the disposition of 1,237 performance stock units in exchange for an equal number of shares of deferred stock units under the SERP, which are payable upon Mr. Roewe's termination of employment."}],"balance_after":2352,"derivative":{"underlying":"Common Stock","underlying_shares":1237},"source":{"system":"sec-edgar","filing":"0000950170-25-044459","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/36029/000095017025044459/ownership.xml","form_type":"4"}},{"id":1192998,"issuer":{"id":3952,"kind":"organization","name":"FIRST FINANCIAL BANKSHARES INC","symbol":"FFIN"},"owners":[{"id":22669,"kind":"person","name":"Roewe Randall Allen","position":1,"cik":"0001642844","reported_name":"Roewe Randall Allen","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Risk Officer"}}],"security":"Common Stock","published_at":"2025-03-25T20:37:17.000Z","date":"2025-03-21","kind":"disposition_to_issuer","planned":false,"acquired":false,"shares":1237,"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. Roewe's receipt of 1,237 shares of common stock was deferred resulting in Mr. Roewe's receipt instead of 1,237 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. Roewe is therefore reporting the disposition of 1,237 performance stock units in exchange for an equal number of shares of deferred stock units under the SERP, which are payable upon Mr. Roewe'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. Roewe's receipt of 1,237 shares of common stock was deferred resulting in Mr. Roewe's receipt instead of 1,237 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. Roewe is therefore reporting the disposition of 1,237 performance stock units in exchange for an equal number of shares of deferred stock units under the SERP, which are payable upon Mr. Roewe's termination of employment."}],"balance_after":31435,"source":{"system":"sec-edgar","filing":"0000950170-25-044459","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/36029/000095017025044459/ownership.xml","form_type":"4"}},{"id":1192997,"issuer":{"id":3952,"kind":"organization","name":"FIRST FINANCIAL BANKSHARES INC","symbol":"FFIN"},"owners":[{"id":22669,"kind":"person","name":"Roewe Randall Allen","position":1,"cik":"0001642844","reported_name":"Roewe Randall Allen","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Risk Officer"}}],"security":"Common Stock","published_at":"2025-03-25T20:37:17.000Z","date":"2025-03-21","kind":"grant","planned":false,"acquired":true,"shares":1237,"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":32672,"source":{"system":"sec-edgar","filing":"0000950170-25-044459","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/36029/000095017025044459/ownership.xml","form_type":"4"}},{"id":1428568,"issuer":{"id":3952,"kind":"organization","name":"FIRST FINANCIAL BANKSHARES INC","symbol":"FFIN"},"owners":[{"id":22669,"kind":"person","name":"Roewe Randall Allen","position":1,"cik":"0001642844","reported_name":"Roewe Randall Allen","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Risk Officer"}}],"security":"Deferred Stock Units","published_at":"2024-08-20T21:01:33.000Z","date":"2024-08-16","kind":"grant","planned":false,"acquired":true,"shares":840,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"In connection with the vesting on August 16, 2024, of 840 restricted stock units previously granted to Mr. Roewe, Mr. Roewe's receipt of 840 shares of common stock was deferred resulting in Mr. Roewe's receipt instead of 840 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. Roewe is therefore reporting the disposition of 840 restricted stock units in exchange for an equal number of shares of deferred stock units under the SERP, which are payable upon Mr. Roewe's termination of employment."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"In connection with the vesting on August 16, 2024, of 840 restricted stock units previously granted to Mr. Roewe, Mr. Roewe's receipt of 840 shares of common stock was deferred resulting in Mr. Roewe's receipt instead of 840 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. Roewe is therefore reporting the disposition of 840 restricted stock units in exchange for an equal number of shares of deferred stock units under the SERP, which are payable upon Mr. Roewe's termination of employment."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"In connection with the vesting on August 16, 2024, of 840 restricted stock units previously granted to Mr. Roewe, Mr. Roewe's receipt of 840 shares of common stock was deferred resulting in Mr. Roewe's receipt instead of 840 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. Roewe is therefore reporting the disposition of 840 restricted stock units in exchange for an equal number of shares of deferred stock units under the SERP, which are payable upon Mr. Roewe's termination of employment."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"In connection with the vesting on August 16, 2024, of 840 restricted stock units previously granted to Mr. Roewe, Mr. Roewe's receipt of 840 shares of common stock was deferred resulting in Mr. Roewe's receipt instead of 840 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. Roewe is therefore reporting the disposition of 840 restricted stock units in exchange for an equal number of shares of deferred stock units under the SERP, which are payable upon Mr. Roewe's termination of employment."}],"balance_after":1115,"derivative":{"underlying":"Common Stock","underlying_shares":840},"source":{"system":"sec-edgar","filing":"0000950170-24-099191","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/36029/000095017024099191/ownership.xml","form_type":"4"}},{"id":1428567,"issuer":{"id":3952,"kind":"organization","name":"FIRST FINANCIAL BANKSHARES INC","symbol":"FFIN"},"owners":[{"id":22669,"kind":"person","name":"Roewe Randall Allen","position":1,"cik":"0001642844","reported_name":"Roewe Randall Allen","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Risk Officer"}}],"security":"Common Stock","published_at":"2024-08-20T21:01:33.000Z","date":"2024-08-16","kind":"disposition_to_issuer","planned":false,"acquired":false,"shares":840,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F2","text":"In connection with the vesting on August 16, 2024, of 840 restricted stock units previously granted to Mr. Roewe, Mr. Roewe's receipt of 840 shares of common stock was deferred resulting in Mr. Roewe's receipt instead of 840 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. Roewe is therefore reporting the disposition of 840 restricted stock units in exchange for an equal number of shares of deferred stock units under the SERP, which are payable upon Mr. Roewe's termination of employment."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"In connection with the vesting on August 16, 2024, of 840 restricted stock units previously granted to Mr. Roewe, Mr. Roewe's receipt of 840 shares of common stock was deferred resulting in Mr. Roewe's receipt instead of 840 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. Roewe is therefore reporting the disposition of 840 restricted stock units in exchange for an equal number of shares of deferred stock units under the SERP, which are payable upon Mr. Roewe's termination of employment."}],"balance_after":31435,"source":{"system":"sec-edgar","filing":"0000950170-24-099191","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/36029/000095017024099191/ownership.xml","form_type":"4"}},{"id":1428566,"issuer":{"id":3952,"kind":"organization","name":"FIRST FINANCIAL BANKSHARES INC","symbol":"FFIN"},"owners":[{"id":22669,"kind":"person","name":"Roewe Randall Allen","position":1,"cik":"0001642844","reported_name":"Roewe Randall Allen","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Risk Officer"}}],"security":"Common 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The restricted stock vests\n33 1/3% at the end of one year, 66 2/3% at the end of two years, and 100% at the end of three years."}],"balance_after":1283,"source":{"system":"sec-edgar","filing":"0001209191-17-057929","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/36029/000120919117057929/doc4.xml","form_type":"4"}},{"id":4280289,"issuer":{"id":3952,"kind":"organization","name":"FIRST FINANCIAL BANKSHARES INC","symbol":"FFIN"},"owners":[{"id":22669,"kind":"person","name":"Roewe Randall Allen","position":1,"cik":"0001642844","reported_name":"Roewe Randall Allen","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Risk Officer"}}],"security":"Employee Stock Option, Right to Buy","published_at":"2017-06-16T19:42:58.000Z","date":"2017-06-12","kind":"grant","acquired":true,"shares":4000,"price":42.35,"value":169400.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"On June 12, 2017, First Financial Bankshares, Inc. granted the reporting person options to purchase 4,000 shares of the Company's common stock at $42.35 per share.  The options vest 20% at the end of two years, 40% at the end of three years, 60% at the end of four years, 80% at the end of five years and 100% at the end of six years."}],"balance_after":4000,"derivative":{"exercise_price":42.35,"exercise_date":"2019-06-12","expiration_date":"2027-06-12","underlying":"Common Stock","underlying_shares":4000},"source":{"system":"sec-edgar","filing":"0001209191-17-040411","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/36029/000120919117040411/doc4.xml","form_type":"4"}}]}