Roewe Randall Allen

SEC source: 0001193125-26-355596 · ownership.xml · derivative · entry 6

Roewe Randall Allen · CIK 0001642844 · EVP, Chief Risk Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 7,960

Underlying: Common Stock · 564 shares

Expires not disclosed

F3 · derivative.exercise_price: 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.

F3 · price: 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.

F3 · derivative.exercise_date: 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.

F3 · derivative.expiration_date: 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.

SEC source: 0001193125-26-355596 · ownership.xml · nonDerivative · entry 3

Roewe Randall Allen · CIK 0001642844 · EVP, Chief Risk Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 33,635

F3 · shares: 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.

F3 · price: 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.

SEC source: 0001193125-26-355596 · ownership.xml · derivative · entry 5

Roewe Randall Allen · CIK 0001642844 · EVP, Chief Risk Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 7,396

Underlying: Common Stock · 1,100 shares

Expires not disclosed

F2 · derivative.exercise_price: 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.

F2 · price: 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.

F2 · derivative.exercise_date: 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.

F2 · derivative.expiration_date: 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.

SEC source: 0001193125-26-355596 · ownership.xml · derivative · entry 4

Roewe Randall Allen · CIK 0001642844 · EVP, Chief Risk Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,684

Underlying: Common Stock · 3,684 shares

Expires 2036-08-14

F4 · derivative.exercise_date: The options vest 33.33% after one year from the grant date, 66.66% after the second year, and 100% after the third year.

SEC source: 0001193125-26-355596 · ownership.xml · nonDerivative · entry 2

Roewe Randall Allen · CIK 0001642844 · EVP, Chief Risk Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 34,199

F2 · shares: 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.

F2 · price: 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.

SEC source: 0001193125-26-355596 · ownership.xml · nonDerivative · entry 1

Roewe Randall Allen · CIK 0001642844 · EVP, Chief Risk Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 35,299

F1 · shares: Reflects grant of restricted stock units (RSUs) which vest in three approximately equal installments on each of the three anniversaries of the grant date.

SEC source: 0001193125-26-111136 · ownership.xml · derivative · entry 3

Roewe Randall Allen · CIK 0001642844 · Chief Risk Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 6,296

Underlying: Common Stock · 2,539 shares

Expires not disclosed

F2 · derivative.exercise_price: 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.

F2 · price: 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.

F2 · derivative.exercise_date: 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.

F2 · derivative.expiration_date: 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.

SEC source: 0001193125-26-111136 · ownership.xml · nonDerivative · entry 2

Roewe Randall Allen · CIK 0001642844 · Chief Risk Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 33,315

F2 · shares: 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.

F2 · price: 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.

SEC source: 0001193125-26-111136 · ownership.xml · nonDerivative · entry 1

Roewe Randall Allen · CIK 0001642844 · Chief Risk Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 35,854

F1 · shares: 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.

F1 · price: 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.

SEC source: 0000950170-25-110058 · ownership.xml · derivative · entry 2

Roewe Randall Allen · CIK 0001642844 · Chief Risk Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,757

Underlying: Common Stock · 839 shares

Expires not disclosed

F1 · derivative.exercise_price: 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.

F1 · price: 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.

F1 · derivative.exercise_date: 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.

F1 · derivative.expiration_date: 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.

SEC source: 0000950170-25-110058 · ownership.xml · nonDerivative · entry 1

Roewe Randall Allen · CIK 0001642844 · Chief Risk Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 33,315

F1 · shares: 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.

F1 · price: 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.

SEC source: 0000950170-25-109655 · ownership.xml · derivative · entry 4

Roewe Randall Allen · CIK 0001642844 · Chief Risk Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,918

Underlying: Common Stock · 566 shares

Expires not disclosed

F2 · derivative.exercise_price: 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.

F2 · price: 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.

F2 · derivative.exercise_date: 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.

F2 · derivative.expiration_date: 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.

SEC source: 0000950170-25-109655 · ownership.xml · derivative · entry 3

Roewe Randall Allen · CIK 0001642844 · Chief Risk Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 5,377

Underlying: Common Stock · 5,377 shares

Expires 2035-08-14

F3 · derivative.exercise_date: The options vest 33.33% after one year from the grant date, 66.66% after the second year, and 100% after the third year.

SEC source: 0000950170-25-109655 · ownership.xml · nonDerivative · entry 2

Roewe Randall Allen · CIK 0001642844 · Chief Risk Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 34,154

F2 · shares: 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.

F2 · price: 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.

SEC source: 0000950170-25-109655 · ownership.xml · nonDerivative · entry 1

Roewe Randall Allen · CIK 0001642844 · Chief Risk Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 34,720

F1 · shares: Reflects grant of restricted stock units (RSUs) which vest in three approximately equal installments on each of the three anniversaries of the grant date.

SEC source: 0000950170-25-100841 · ownership.xml · derivative · entry 4

Roewe Randall Allen · CIK 0001642844 · Chief Risk Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 5,858

Underlying: Common Stock · 96 shares

Expires 2033-08-16

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0000950170-25-100841 · ownership.xml · derivative · entry 3

Roewe Randall Allen · CIK 0001642844 · Chief Risk Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 812

Underlying: Common Stock · 1,588 shares

Expires 2029-06-26

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0000950170-25-100841 · ownership.xml · nonDerivative · entry 2

Roewe Randall Allen · CIK 0001642844 · Chief Risk Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 33,119

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0000950170-25-100841 · ownership.xml · nonDerivative · entry 1

Roewe Randall Allen · CIK 0001642844 · Chief Risk Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 33,023

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0000950170-25-044459 · ownership.xml · derivative · entry 3

Roewe Randall Allen · CIK 0001642844 · Chief Risk Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,352

Underlying: Common Stock · 1,237 shares

Expires not disclosed

F2 · derivative.exercise_price: 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.

F2 · price: 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.

F2 · derivative.exercise_date: 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.

F2 · derivative.expiration_date: 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.

SEC source: 0000950170-25-044459 · ownership.xml · nonDerivative · entry 2

Roewe Randall Allen · CIK 0001642844 · Chief Risk Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 31,435

F2 · shares: 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.

F2 · price: 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.

SEC source: 0000950170-25-044459 · ownership.xml · nonDerivative · entry 1

Roewe Randall Allen · CIK 0001642844 · Chief Risk Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 32,672

F1 · shares: 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.

F1 · price: 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.

SEC source: 0000950170-24-099191 · ownership.xml · derivative · entry 3

Roewe Randall Allen · CIK 0001642844 · Chief Risk Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,115

Underlying: Common Stock · 840 shares

Expires not disclosed

F2 · derivative.exercise_price: 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.

F2 · price: 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.

F2 · derivative.exercise_date: 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.

F2 · derivative.expiration_date: 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.

SEC source: 0000950170-24-099191 · ownership.xml · nonDerivative · entry 2

Roewe Randall Allen · CIK 0001642844 · Chief Risk Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 31,435

F2 · shares: 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.

F2 · price: 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.

SEC source: 0000950170-24-099191 · ownership.xml · nonDerivative · entry 1

Roewe Randall Allen · CIK 0001642844 · Chief Risk Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 32,275

F1 · shares: The reporting person elected, in accordance with the Registrant's 2021 Omnibus Stock and Incentive Plan, to exercise his right to have the Registrant withhold 65 shares of the Registrant's common stock to pay income taxes related to vesting of previously granted restricted stock units.

SEC source: 0000950170-24-097434 · ownership.xml · derivative · entry 2

Roewe Randall Allen · CIK 0001642844 · Chief Risk Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 5,858

Underlying: Common Stock · 5,858 shares

Expires 2034-08-14

F2 · derivative.exercise_date: The options vest 33.33% after one year from the grant date, 66.66% after the second year, and 100% after the third year.

SEC source: 0000950170-24-097434 · ownership.xml · nonDerivative · entry 1

Roewe Randall Allen · CIK 0001642844 · Chief Risk Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 32,340

F1 · shares: Reflects grant of restricted stock units (RSUs) which vest in three approximately equal installments on each of the three anniversaries of the grant date.

SEC source: 0001209191-24-004990 · doc4.xml · nonDerivative · entry 2

Roewe Randall Allen · CIK 0001642844 · Chief Risk Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 30,643

F2 · shares: The reporting person elected, in accordance with the Registrant's 2021 Omnibus Stock and Incentive Plan, to exercise his right to have the Registrant withhold 237 shares of the Registrant's common stock to pay income taxes related to vesting of previously granted performance stock units.

SEC source: 0001209191-24-004990 · doc4.xml · nonDerivative · entry 1

Roewe Randall Allen · CIK 0001642844 · Chief Risk Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 30,880

F1 · shares: 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.

F1 · price: 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.

SEC source: 0001209191-24-002988 · doc4.xml · derivative · entry 2

Roewe Randall Allen · CIK 0001642844 · Chief Risk Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,400

Underlying: Common Stock · 360 shares

Expires 2029-06-26

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0001209191-24-002988 · doc4.xml · nonDerivative · entry 1

Roewe Randall Allen · CIK 0001642844 · Chief Risk Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 30,082

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0001209191-23-058745 · doc4.xml · derivative · entry 2

Roewe Randall Allen · CIK 0001642844 · Chief Risk Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,760

Underlying: Common Stock · 840 shares

Expires 2029-06-26

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0001209191-23-058745 · doc4.xml · nonDerivative · entry 1

Roewe Randall Allen · CIK 0001642844 · Chief Risk Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 29,722

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0001209191-23-053960 · doc4.xml · nonDerivative · entry 1

Roewe Randall Allen · CIK 0001642844 · Chief Risk Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 28,882

F1 · shares: The reporting person elected, in accordance with the Registrant's 2015 Restricted Stock Plan, to exercise his right to have the Registrant withhold 203 shares of the Registrant's common stock to pay income taxes related to vesting of previously granted restricted stock.

SEC source: 0001209191-23-046574 · doc4.xml · derivative · entry 5

Roewe Randall Allen · CIK 0001642844 · Chief Risk Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 275

Underlying: Common Stock · 275 shares

Expires not disclosed

F3 · derivative.exercise_price: In connection with the vesting on August 16, 2023, of 275 restricted stock units previously granted to Mr. Roewe on August 16, 2022, Mr. Roewe's receipt of 275 shares of common stock was deferred resulting in Mr. Roewe's receipt instead of 275 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 275 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.

F3 · price: In connection with the vesting on August 16, 2023, of 275 restricted stock units previously granted to Mr. Roewe on August 16, 2022, Mr. Roewe's receipt of 275 shares of common stock was deferred resulting in Mr. Roewe's receipt instead of 275 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 275 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.

F3 · derivative.exercise_date: In connection with the vesting on August 16, 2023, of 275 restricted stock units previously granted to Mr. Roewe on August 16, 2022, Mr. Roewe's receipt of 275 shares of common stock was deferred resulting in Mr. Roewe's receipt instead of 275 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 275 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.

F3 · derivative.expiration_date: In connection with the vesting on August 16, 2023, of 275 restricted stock units previously granted to Mr. Roewe on August 16, 2022, Mr. Roewe's receipt of 275 shares of common stock was deferred resulting in Mr. Roewe's receipt instead of 275 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 275 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.

SEC source: 0001209191-23-046574 · doc4.xml · derivative · entry 4

Roewe Randall Allen · CIK 0001642844 · Chief Risk Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 5,954

Underlying: Common Stock · 5,954 shares

Expires 2033-08-16

F4 · derivative.exercise_date: The options vest 33.33% after one year from the grant date, 66.66% after the second year, and 100% after the third year.

SEC source: 0001209191-23-046574 · doc4.xml · nonDerivative · entry 3

Roewe Randall Allen · CIK 0001642844 · Chief Risk Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 29,085

F3 · shares: In connection with the vesting on August 16, 2023, of 275 restricted stock units previously granted to Mr. Roewe on August 16, 2022, Mr. Roewe's receipt of 275 shares of common stock was deferred resulting in Mr. Roewe's receipt instead of 275 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 275 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.

F3 · price: In connection with the vesting on August 16, 2023, of 275 restricted stock units previously granted to Mr. Roewe on August 16, 2022, Mr. Roewe's receipt of 275 shares of common stock was deferred resulting in Mr. Roewe's receipt instead of 275 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 275 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.

SEC source: 0001209191-23-046574 · doc4.xml · nonDerivative · entry 2

Roewe Randall Allen · CIK 0001642844 · Chief Risk Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 29,360

F2 · shares: Reflects grant of restricted stock units (RSUs) which vest in three approximately equal installments on each of the three anniversaries of the grant date.

SEC source: 0001209191-23-046574 · doc4.xml · nonDerivative · entry 1

Roewe Randall Allen · CIK 0001642844 · Chief Risk Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 27,667

F1 · shares: The reporting person elected, in accordance with the Registrant's 2021 Omnibus Stock and Incentive Plan, to exercise his right to have the Registrant withhold 65 shares of the Registrant's common stock to pay income taxes related to vesting of previously granted restricted stock units.

SEC source: 0001209191-23-044125 · doc4.xml · derivative · entry 2

Roewe Randall Allen · CIK 0001642844 · Chief Risk Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 1,600 shares

Expires 2027-06-12

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0001209191-23-044125 · doc4.xml · nonDerivative · entry 1

Roewe Randall Allen · CIK 0001642844 · Chief Risk Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 27,732

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0001209191-23-005495 · doc4.xml · derivative · entry 2

Roewe Randall Allen · CIK 0001642844 · Chief Risk Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 3,600

Underlying: Common Stock · 225 shares

Expires 2029-06-26

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0001209191-23-005495 · doc4.xml · nonDerivative · entry 1

Roewe Randall Allen · CIK 0001642844 · Chief Risk Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 26,132

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0001209191-22-056378 · doc4.xml · derivative · entry 2

Roewe Randall Allen · CIK 0001642844 · Chief Risk Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 3,825

Underlying: Common Stock · 675 shares

Expires 2029-06-26

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0001209191-22-056378 · doc4.xml · nonDerivative · entry 1

Roewe Randall Allen · CIK 0001642844 · Chief Risk Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 25,907

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0001209191-22-055615 · doc4.xml · nonDerivative · entry 2

Roewe Randall Allen · CIK 0001642844 · Chief Risk Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 25,232

F1 · shares: The reporting person elected, in accordance with the Registrant's 2015 Restricted Stock Plan, to exercise his right to have the Registrant withhold 374 shares of the Registrant's common stock to pay income taxes related to vesting of previously granted restricted stock.

SEC source: 0001209191-22-055615 · doc4.xml · nonDerivative · entry 1

Roewe Randall Allen · CIK 0001642844 · Chief Risk Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 25,434

F1 · shares: The reporting person elected, in accordance with the Registrant's 2015 Restricted Stock Plan, to exercise his right to have the Registrant withhold 374 shares of the Registrant's common stock to pay income taxes related to vesting of previously granted restricted stock.

SEC source: 0001209191-22-046604 · doc4.xml · derivative · entry 3

Roewe Randall Allen · CIK 0001642844 · Chief Risk Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 3,386

Underlying: Common Stock · 3,386 shares

Expires 2032-08-16

F3 · derivative.exercise_date: The options vest 20% after one year from the grant date, 40% after the second year, 60% after the third year, 80% after the fourth year and 100% after the fifth year.

SEC source: 0001209191-22-046604 · doc4.xml · nonDerivative · entry 2

Roewe Randall Allen · CIK 0001642844 · Chief Risk Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 25,606

F2 · shares: Reflects grant of restricted stock units (RSUs) which vest in three approximately equal installments on each of the three anniversaries of the grant date.

SEC source: 0001209191-22-046604 · doc4.xml · nonDerivative · entry 1

Roewe Randall Allen · CIK 0001642844 · Chief Risk Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 24,781

F1 · shares: The reporting person elected, in accordance with the Registrant's 2021 Omnibus Stock and Incentive Plan, to exercise his right to have the Registrant withhold 66 shares of the Registrant's common stock to pay income taxes related to vesting of previously granted restricted stock units.