Ruzicka John James Jr

SEC source: 0001193125-26-355113 · ownership.xml · derivative · entry 4

Ruzicka John James Jr · CIK 0001773890 · EVP, Chief Banking Ops Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 7,243

Underlying: Common Stock · 526 shares

Expires not disclosed

F2 · derivative.exercise_price: In connection with the vesting on August 16, 2026, of 526 restricted stock units previously granted to the reporting person, the reporting person's receipt of 526 shares of common stock was deferred resulting in the reporting person's receipt instead of 526 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 526 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 16, 2026, of 526 restricted stock units previously granted to the reporting person, the reporting person's receipt of 526 shares of common stock was deferred resulting in the reporting person's receipt instead of 526 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 526 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 16, 2026, of 526 restricted stock units previously granted to the reporting person, the reporting person's receipt of 526 shares of common stock was deferred resulting in the reporting person's receipt instead of 526 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 526 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 16, 2026, of 526 restricted stock units previously granted to the reporting person, the reporting person's receipt of 526 shares of common stock was deferred resulting in the reporting person's receipt instead of 526 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 526 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: 0001193125-26-355113 · ownership.xml · nonDerivative · entry 2

Ruzicka John James Jr · CIK 0001773890 · EVP, Chief Banking Ops Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 10,580

F2 · shares: In connection with the vesting on August 16, 2026, of 526 restricted stock units previously granted to the reporting person, the reporting person's receipt of 526 shares of common stock was deferred resulting in the reporting person's receipt instead of 526 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 526 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 16, 2026, of 526 restricted stock units previously granted to the reporting person, the reporting person's receipt of 526 shares of common stock was deferred resulting in the reporting person's receipt instead of 526 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 526 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: 0001193125-26-355113 · ownership.xml · derivative · entry 3

Ruzicka John James Jr · CIK 0001773890 · EVP, Chief Banking Ops Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 6,717

Underlying: Common Stock · 880 shares

Expires not disclosed

F1 · derivative.exercise_price: In connection with the vesting on August 14, 2026, of 880 restricted stock units previously granted to the reporting person, the reporting person's receipt of 880 shares of common stock was deferred resulting in the reporting person's receipt instead of 880 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 880 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 14, 2026, of 880 restricted stock units previously granted to the reporting person, the reporting person's receipt of 880 shares of common stock was deferred resulting in the reporting person's receipt instead of 880 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 880 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 14, 2026, of 880 restricted stock units previously granted to the reporting person, the reporting person's receipt of 880 shares of common stock was deferred resulting in the reporting person's receipt instead of 880 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 880 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 14, 2026, of 880 restricted stock units previously granted to the reporting person, the reporting person's receipt of 880 shares of common stock was deferred resulting in the reporting person's receipt instead of 880 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 880 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: 0001193125-26-355113 · ownership.xml · nonDerivative · entry 1

Ruzicka John James Jr · CIK 0001773890 · EVP, Chief Banking Ops Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 11,106

F1 · shares: In connection with the vesting on August 14, 2026, of 880 restricted stock units previously granted to the reporting person, the reporting person's receipt of 880 shares of common stock was deferred resulting in the reporting person's receipt instead of 880 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 880 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 14, 2026, of 880 restricted stock units previously granted to the reporting person, the reporting person's receipt of 880 shares of common stock was deferred resulting in the reporting person's receipt instead of 880 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 880 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: 0001193125-26-111195 · ownership.xml · derivative · entry 3

Ruzicka John James Jr · CIK 0001773890 · EVP, Chief Banking Ops Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 5,837

Underlying: Common Stock · 2,370 shares

Expires not disclosed

F2 · derivative.exercise_price: In connection with the vesting of performance stock units previously granted on August 16, 2023, Mr. Ruzicka's receipt of 2,370 shares of common stock was deferred resulting in Mr. Ruzicka's receipt instead of 2,370 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. Ruzicka is therefore reporting the disposition of 2,370 performance stock units in exchange for an equal number of shares of deferred stock units under the SERP, which are payable upon Mr. Ruzicka's termination of employment.

F2 · price: In connection with the vesting of performance stock units previously granted on August 16, 2023, Mr. Ruzicka's receipt of 2,370 shares of common stock was deferred resulting in Mr. Ruzicka's receipt instead of 2,370 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. Ruzicka is therefore reporting the disposition of 2,370 performance stock units in exchange for an equal number of shares of deferred stock units under the SERP, which are payable upon Mr. Ruzicka's termination of employment.

F2 · derivative.exercise_date: In connection with the vesting of performance stock units previously granted on August 16, 2023, Mr. Ruzicka's receipt of 2,370 shares of common stock was deferred resulting in Mr. Ruzicka's receipt instead of 2,370 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. Ruzicka is therefore reporting the disposition of 2,370 performance stock units in exchange for an equal number of shares of deferred stock units under the SERP, which are payable upon Mr. Ruzicka's termination of employment.

F2 · derivative.expiration_date: In connection with the vesting of performance stock units previously granted on August 16, 2023, Mr. Ruzicka's receipt of 2,370 shares of common stock was deferred resulting in Mr. Ruzicka's receipt instead of 2,370 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. Ruzicka is therefore reporting the disposition of 2,370 performance stock units in exchange for an equal number of shares of deferred stock units under the SERP, which are payable upon Mr. Ruzicka's termination of employment.

SEC source: 0001193125-26-111195 · ownership.xml · nonDerivative · entry 2

Ruzicka John James Jr · CIK 0001773890 · EVP, Chief Banking Ops Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 11,986

F2 · shares: In connection with the vesting of performance stock units previously granted on August 16, 2023, Mr. Ruzicka's receipt of 2,370 shares of common stock was deferred resulting in Mr. Ruzicka's receipt instead of 2,370 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. Ruzicka is therefore reporting the disposition of 2,370 performance stock units in exchange for an equal number of shares of deferred stock units under the SERP, which are payable upon Mr. Ruzicka's termination of employment.

F2 · price: In connection with the vesting of performance stock units previously granted on August 16, 2023, Mr. Ruzicka's receipt of 2,370 shares of common stock was deferred resulting in Mr. Ruzicka's receipt instead of 2,370 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. Ruzicka is therefore reporting the disposition of 2,370 performance stock units in exchange for an equal number of shares of deferred stock units under the SERP, which are payable upon Mr. Ruzicka's termination of employment.

SEC source: 0001193125-26-111195 · ownership.xml · nonDerivative · entry 1

Ruzicka John James Jr · CIK 0001773890 · EVP, Chief Banking Ops Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 14,356

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: 0000950170-25-110068 · ownership.xml · derivative · entry 2

Ruzicka John James Jr · CIK 0001773890 · EVP-CIO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,467

Underlying: Common Stock · 788 shares

Expires not disclosed

F1 · derivative.exercise_price: In connection with the vesting on August 16, 2025, of 788 restricted stock units previously granted to the reporting person, the reporting person's receipt of 788 shares of common stock was deferred resulting in the reporting person's receipt instead of 788 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 788 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 788 restricted stock units previously granted to the reporting person, the reporting person's receipt of 788 shares of common stock was deferred resulting in the reporting person's receipt instead of 788 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 788 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 788 restricted stock units previously granted to the reporting person, the reporting person's receipt of 788 shares of common stock was deferred resulting in the reporting person's receipt instead of 788 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 788 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 788 restricted stock units previously granted to the reporting person, the reporting person's receipt of 788 shares of common stock was deferred resulting in the reporting person's receipt instead of 788 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 788 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: 0000950170-25-110068 · ownership.xml · nonDerivative · entry 1

Ruzicka John James Jr · CIK 0001773890 · EVP-CIO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 11,986

F1 · shares: In connection with the vesting on August 16, 2025, of 788 restricted stock units previously granted to the reporting person, the reporting person's receipt of 788 shares of common stock was deferred resulting in the reporting person's receipt instead of 788 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 788 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 788 restricted stock units previously granted to the reporting person, the reporting person's receipt of 788 shares of common stock was deferred resulting in the reporting person's receipt instead of 788 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 788 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: 0000950170-25-109671 · ownership.xml · derivative · entry 4

Ruzicka John James Jr · CIK 0001773890 · EVP-CIO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,679

Underlying: Common Stock · 453 shares

Expires not disclosed

F2 · derivative.exercise_price: In connection with the vesting on August 14, 2025, of 453 restricted stock units previously granted to the reporting person, the reporting person's receipt of 453 shares of common stock was deferred resulting in the reporting person's receipt instead of 453 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 453 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 453 restricted stock units previously granted to the reporting person, the reporting person's receipt of 453 shares of common stock was deferred resulting in the reporting person's receipt instead of 453 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 453 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 453 restricted stock units previously granted to the reporting person, the reporting person's receipt of 453 shares of common stock was deferred resulting in the reporting person's receipt instead of 453 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 453 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 453 restricted stock units previously granted to the reporting person, the reporting person's receipt of 453 shares of common stock was deferred resulting in the reporting person's receipt instead of 453 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 453 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: 0000950170-25-109671 · ownership.xml · derivative · entry 3

Ruzicka John James Jr · CIK 0001773890 · EVP-CIO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 4,302

Underlying: Common Stock · 4,302 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: 0000950170-25-109671 · ownership.xml · nonDerivative · entry 2

Ruzicka John James Jr · CIK 0001773890 · EVP-CIO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 12,774

F2 · shares: In connection with the vesting on August 14, 2025, of 453 restricted stock units previously granted to the reporting person, the reporting person's receipt of 453 shares of common stock was deferred resulting in the reporting person's receipt instead of 453 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 453 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 453 restricted stock units previously granted to the reporting person, the reporting person's receipt of 453 shares of common stock was deferred resulting in the reporting person's receipt instead of 453 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 453 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: 0000950170-25-109671 · ownership.xml · nonDerivative · entry 1

Ruzicka John James Jr · CIK 0001773890 · EVP-CIO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 13,227

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: 0000950170-25-044481 · ownership.xml · derivative · entry 3

Ruzicka John James Jr · CIK 0001773890 · EVP-CIO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,226

Underlying: Common Stock · 1,176 shares

Expires not disclosed

F2 · derivative.exercise_price: In connection with the vesting of performance stock units previously granted on August 16, 2022, Mr. Ruzicka's receipt of 1,176 shares of common stock was deferred resulting in Mr. Ruzicka's receipt instead of 1,176 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. Ruzicka is therefore reporting the disposition of 1,176 performance stock units in exchange for an equal number of shares of deferred stock units under the SERP, which are payable upon Mr. Ruzicka's termination of employment.

F2 · price: In connection with the vesting of performance stock units previously granted on August 16, 2022, Mr. Ruzicka's receipt of 1,176 shares of common stock was deferred resulting in Mr. Ruzicka's receipt instead of 1,176 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. Ruzicka is therefore reporting the disposition of 1,176 performance stock units in exchange for an equal number of shares of deferred stock units under the SERP, which are payable upon Mr. Ruzicka's termination of employment.

F2 · derivative.exercise_date: In connection with the vesting of performance stock units previously granted on August 16, 2022, Mr. Ruzicka's receipt of 1,176 shares of common stock was deferred resulting in Mr. Ruzicka's receipt instead of 1,176 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. Ruzicka is therefore reporting the disposition of 1,176 performance stock units in exchange for an equal number of shares of deferred stock units under the SERP, which are payable upon Mr. Ruzicka's termination of employment.

F2 · derivative.expiration_date: In connection with the vesting of performance stock units previously granted on August 16, 2022, Mr. Ruzicka's receipt of 1,176 shares of common stock was deferred resulting in Mr. Ruzicka's receipt instead of 1,176 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. Ruzicka is therefore reporting the disposition of 1,176 performance stock units in exchange for an equal number of shares of deferred stock units under the SERP, which are payable upon Mr. Ruzicka's termination of employment.

SEC source: 0000950170-25-044481 · ownership.xml · nonDerivative · entry 2

Ruzicka John James Jr · CIK 0001773890 · EVP-CIO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 11,946

F2 · shares: In connection with the vesting of performance stock units previously granted on August 16, 2022, Mr. Ruzicka's receipt of 1,176 shares of common stock was deferred resulting in Mr. Ruzicka's receipt instead of 1,176 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. Ruzicka is therefore reporting the disposition of 1,176 performance stock units in exchange for an equal number of shares of deferred stock units under the SERP, which are payable upon Mr. Ruzicka's termination of employment.

F2 · price: In connection with the vesting of performance stock units previously granted on August 16, 2022, Mr. Ruzicka's receipt of 1,176 shares of common stock was deferred resulting in Mr. Ruzicka's receipt instead of 1,176 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. Ruzicka is therefore reporting the disposition of 1,176 performance stock units in exchange for an equal number of shares of deferred stock units under the SERP, which are payable upon Mr. Ruzicka's termination of employment.

SEC source: 0000950170-25-044481 · ownership.xml · nonDerivative · entry 1

Ruzicka John James Jr · CIK 0001773890 · EVP-CIO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 13,122

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: 0000950170-25-011013 · ownership.xml · derivative · entry 2

Ruzicka John James Jr · CIK 0001773890 · EVP-CIO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 7,300

Underlying: Common Stock · 500 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: 0000950170-25-011013 · ownership.xml · nonDerivative · entry 1

Ruzicka John James Jr · CIK 0001773890 · EVP-CIO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 11,946

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: 0000950170-24-099165 · ownership.xml · derivative · entry 3

Ruzicka John James Jr · CIK 0001773890 · EVP-CIO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,050

Underlying: Common Stock · 788 shares

Expires not disclosed

F2 · derivative.exercise_price: In connection with the vesting on August 16, 2024, of 788 restricted stock units previously granted to Mr. Ruzicka, Mr. Ruzicka's receipt of 788 shares of common stock was deferred resulting in Mr. Ruzicka's receipt instead of 788 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. Ruzicka is therefore reporting the disposition of 788 restricted stock units in exchange for an equal number of shares of deferred stock units under the SERP, which are payable upon Mr. Ruzicka's termination of employment.

F2 · price: In connection with the vesting on August 16, 2024, of 788 restricted stock units previously granted to Mr. Ruzicka, Mr. Ruzicka's receipt of 788 shares of common stock was deferred resulting in Mr. Ruzicka's receipt instead of 788 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. Ruzicka is therefore reporting the disposition of 788 restricted stock units in exchange for an equal number of shares of deferred stock units under the SERP, which are payable upon Mr. Ruzicka's termination of employment.

F2 · derivative.exercise_date: In connection with the vesting on August 16, 2024, of 788 restricted stock units previously granted to Mr. Ruzicka, Mr. Ruzicka's receipt of 788 shares of common stock was deferred resulting in Mr. Ruzicka's receipt instead of 788 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. Ruzicka is therefore reporting the disposition of 788 restricted stock units in exchange for an equal number of shares of deferred stock units under the SERP, which are payable upon Mr. Ruzicka's termination of employment.

F2 · derivative.expiration_date: In connection with the vesting on August 16, 2024, of 788 restricted stock units previously granted to Mr. Ruzicka, Mr. Ruzicka's receipt of 788 shares of common stock was deferred resulting in Mr. Ruzicka's receipt instead of 788 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. Ruzicka is therefore reporting the disposition of 788 restricted stock units in exchange for an equal number of shares of deferred stock units under the SERP, which are payable upon Mr. Ruzicka's termination of employment.

SEC source: 0000950170-24-099165 · ownership.xml · nonDerivative · entry 2

Ruzicka John James Jr · CIK 0001773890 · EVP-CIO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 11,446

F2 · shares: In connection with the vesting on August 16, 2024, of 788 restricted stock units previously granted to Mr. Ruzicka, Mr. Ruzicka's receipt of 788 shares of common stock was deferred resulting in Mr. Ruzicka's receipt instead of 788 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. Ruzicka is therefore reporting the disposition of 788 restricted stock units in exchange for an equal number of shares of deferred stock units under the SERP, which are payable upon Mr. Ruzicka's termination of employment.

F2 · price: In connection with the vesting on August 16, 2024, of 788 restricted stock units previously granted to Mr. Ruzicka, Mr. Ruzicka's receipt of 788 shares of common stock was deferred resulting in Mr. Ruzicka's receipt instead of 788 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. Ruzicka is therefore reporting the disposition of 788 restricted stock units in exchange for an equal number of shares of deferred stock units under the SERP, which are payable upon Mr. Ruzicka's termination of employment.

SEC source: 0000950170-24-099165 · ownership.xml · nonDerivative · entry 1

Ruzicka John James Jr · CIK 0001773890 · EVP-CIO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 12,234

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 58 shares of the Registrant's common stock to pay income taxes related to vesting of previously granted restricted stock units.

SEC source: 0000950170-24-097412 · ownership.xml · derivative · entry 2

Ruzicka John James Jr · CIK 0001773890 · EVP-CIO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 4,686

Underlying: Common Stock · 4,686 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: 0000950170-24-097412 · ownership.xml · nonDerivative · entry 1

Ruzicka John James Jr · CIK 0001773890 · EVP-CIO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 12,292

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: 0001209191-24-004994 · doc4.xml · nonDerivative · entry 2

Ruzicka John James Jr · CIK 0001773890 · EVP-CIO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 10,934

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 213 shares of the Registrant's common stock to pay income taxes related to vesting of previously granted performance stock units.

SEC source: 0001209191-24-004994 · doc4.xml · nonDerivative · entry 1

Ruzicka John James Jr · CIK 0001773890 · EVP-CIO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 11,147

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: 0001209191-23-053957 · doc4.xml · nonDerivative · entry 1

Ruzicka John James Jr · CIK 0001773890 · EVP-CIO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 10,431

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: 0001209191-23-046579 · doc4.xml · derivative · entry 5

Ruzicka John James Jr · CIK 0001773890 · EVP-CIO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 262

Underlying: Common Stock · 262 shares

Expires not disclosed

F3 · derivative.exercise_price: In connection with the vesting on August 16, 2023, of 262 restricted stock units previously granted to Mr. Ruzicka on August 16, 2022, Mr. Ruzicka's receipt of 262 shares of common stock was deferred resulting in Mr. Ruzicka's receipt instead of 262 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. Ruzicka is therefore reporting the disposition of 262 restricted stock units in exchange for an equal number of shares of deferred stock units under the SERP, which are payable upon Mr. Ruzicka's termination of employment.

F3 · price: In connection with the vesting on August 16, 2023, of 262 restricted stock units previously granted to Mr. Ruzicka on August 16, 2022, Mr. Ruzicka's receipt of 262 shares of common stock was deferred resulting in Mr. Ruzicka's receipt instead of 262 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. Ruzicka is therefore reporting the disposition of 262 restricted stock units in exchange for an equal number of shares of deferred stock units under the SERP, which are payable upon Mr. Ruzicka's termination of employment.

F3 · derivative.exercise_date: In connection with the vesting on August 16, 2023, of 262 restricted stock units previously granted to Mr. Ruzicka on August 16, 2022, Mr. Ruzicka's receipt of 262 shares of common stock was deferred resulting in Mr. Ruzicka's receipt instead of 262 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. Ruzicka is therefore reporting the disposition of 262 restricted stock units in exchange for an equal number of shares of deferred stock units under the SERP, which are payable upon Mr. Ruzicka's termination of employment.

F3 · derivative.expiration_date: In connection with the vesting on August 16, 2023, of 262 restricted stock units previously granted to Mr. Ruzicka on August 16, 2022, Mr. Ruzicka's receipt of 262 shares of common stock was deferred resulting in Mr. Ruzicka's receipt instead of 262 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. Ruzicka is therefore reporting the disposition of 262 restricted stock units in exchange for an equal number of shares of deferred stock units under the SERP, which are payable upon Mr. Ruzicka's termination of employment.

SEC source: 0001209191-23-046579 · doc4.xml · derivative · entry 4

Ruzicka John James Jr · CIK 0001773890 · EVP-CIO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 5,557

Underlying: Common Stock · 5,557 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: 0001209191-23-046579 · doc4.xml · nonDerivative · entry 3

Ruzicka John James Jr · CIK 0001773890 · EVP-CIO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 10,634

F3 · shares: In connection with the vesting on August 16, 2023, of 262 restricted stock units previously granted to Mr. Ruzicka on August 16, 2022, Mr. Ruzicka's receipt of 262 shares of common stock was deferred resulting in Mr. Ruzicka's receipt instead of 262 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. Ruzicka is therefore reporting the disposition of 262 restricted stock units in exchange for an equal number of shares of deferred stock units under the SERP, which are payable upon Mr. Ruzicka's termination of employment.

F3 · price: In connection with the vesting on August 16, 2023, of 262 restricted stock units previously granted to Mr. Ruzicka on August 16, 2022, Mr. Ruzicka's receipt of 262 shares of common stock was deferred resulting in Mr. Ruzicka's receipt instead of 262 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. Ruzicka is therefore reporting the disposition of 262 restricted stock units in exchange for an equal number of shares of deferred stock units under the SERP, which are payable upon Mr. Ruzicka's termination of employment.

SEC source: 0001209191-23-046579 · doc4.xml · nonDerivative · entry 2

Ruzicka John James Jr · CIK 0001773890 · EVP-CIO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 10,896

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: 0001209191-23-046579 · doc4.xml · nonDerivative · entry 1

Ruzicka John James Jr · CIK 0001773890 · EVP-CIO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 9,316

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 59 shares of the Registrant's common stock to pay income taxes related to vesting of previously granted restricted stock units.

SEC source: 0001209191-23-005690 · doc4.xml · derivative · entry 2

Ruzicka John James Jr · CIK 0001773890 · EVP-CIO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 7,800

Underlying: Common Stock · 200 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: 0001209191-23-005690 · doc4.xml · nonDerivative · entry 1

Ruzicka John James Jr · CIK 0001773890 · EVP-CIO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 9,375

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: 0001209191-22-055619 · doc4.xml · nonDerivative · entry 2

Ruzicka John James Jr · CIK 0001773890 · EVP-CIO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 9,175

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: 0001209191-22-055619 · doc4.xml · nonDerivative · entry 1

Ruzicka John James Jr · CIK 0001773890 · EVP-CIO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 9,377

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: 0001209191-22-046681 · doc4.xml · derivative · entry 3

Ruzicka John James Jr · CIK 0001773890 · EVP-CIO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 3,218

Underlying: Common Stock · 3,218 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: 0001209191-22-046681 · doc4.xml · nonDerivative · entry 2

Ruzicka John James Jr · CIK 0001773890 · EVP-CIO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 9,549

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: 0001209191-22-046681 · doc4.xml · nonDerivative · entry 1

Ruzicka John James Jr · CIK 0001773890 · EVP-CIO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 8,765

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 59 shares of the Registrant's common stock to pay income taxes related to vesting of previously granted restricted stock units.

SEC source: 0001209191-21-062049 · doc4.xml · nonDerivative · entry 1

Ruzicka John James Jr · CIK 0001773890 · EVP-CIO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 8,824

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 597 shares of the Registrant's common stock to pay income taxes related to vesting of previously granted restricted stock.

SEC source: 0001209191-21-052274 · doc4.xml · derivative · entry 2

Ruzicka John James Jr · CIK 0001773890 · EVP-CIO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 2,694

Underlying: Common Stock · 2,694 shares

Expires 2031-08-16

F2 · 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: 0001209191-21-052274 · doc4.xml · nonDerivative · entry 1

Ruzicka John James Jr · CIK 0001773890 · EVP-CIO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 9,421

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: 0001209191-21-050372 · doc4.xml · derivative · entry 2

Ruzicka John James Jr · CIK 0001773890 · EVP-CIO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 8,000

Underlying: Common Stock · 2,000 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: 0001209191-21-050372 · doc4.xml · nonDerivative · entry 1

Ruzicka John James Jr · CIK 0001773890 · EVP-CIO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 8,705

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: 0001209191-20-056121 · doc4.xml · nonDerivative · entry 2

Ruzicka John James Jr · CIK 0001773890 · EVP-CIO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 6,705

F2 · shares: The reporting person elected, in accordance with the Registrant's 2015 Restricted Stock Plan, to exercise his right to have the Registrant withhold 393 shares of the Registrant's common stock to pay income taxes related to vesting of previously granted restricted stock.

SEC source: 0001209191-20-056121 · doc4.xml · nonDerivative · entry 1

Ruzicka John James Jr · CIK 0001773890 · EVP-CIO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 7,098

F1 · shares: On October 27,2020, First Financial Bankshares, Inc. granted the reporting person restricted stock totaling 2,488 shares. The restricted stock vests 33 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.

SEC source: 0001209191-19-053824 · doc4.xml · nonDerivative · entry 2

Ruzicka John James Jr · CIK 0001773890 · EVP-CIO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 4,610

F3 · shares: The reporting person elected, in accordance with the Registrant's 2015 Restricted Stock Plan, to exercise his right to have the Registrant withhold 220 shares of the Registrant's common stock to pay income taxes related to vesting of previously granted restricted stock.

F2 · balance_after: Amounts have been adjusted for the two-for-one stock split effective June 3, 2019.

SEC source: 0001209191-19-053824 · doc4.xml · nonDerivative · entry 1

Ruzicka John James Jr · CIK 0001773890 · EVP-CIO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 4,830

F1 · shares: On October 22,2019, First Financial Bankshares, Inc. granted the reporting person restricted stock totaling 2,120 shares. The restricted stock vests 33 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.

F2 · balance_after: Amounts have been adjusted for the two-for-one stock split effective June 3, 2019.

SEC source: 0001209191-19-039157 · doc4.xml · derivative · entry 1

Ruzicka John James Jr · CIK 0001773890 · EVP-CIO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 10,000

Underlying: Common Stock · 10,000 shares

Expires 2029-06-26

F1 · shares: On June 26, 2019, First Financial Bankshares, Inc. granted the reporting person options to purchase 10,000 shares of the Company's common stock at $29.70 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.