DUESER F SCOTT

SEC source: 0001193125-26-355175 · ownership.xml · derivative · entry 5

DUESER F SCOTT · CIK 0001243211 · Director · Executive Chairman

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 59,245

Underlying: Common Stock · 8,875 shares

Expires not disclosed

F3 · derivative.exercise_price: In connection with the vesting on August 14, 2026, of 8,875 restricted stock units previously granted to the reporting person, the reporting person's receipt of 8,875 shares of common stock was deferred resulting in the reporting person's receipt instead of 8,875 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 8,875 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 14, 2026, of 8,875 restricted stock units previously granted to the reporting person, the reporting person's receipt of 8,875 shares of common stock was deferred resulting in the reporting person's receipt instead of 8,875 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 8,875 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 14, 2026, of 8,875 restricted stock units previously granted to the reporting person, the reporting person's receipt of 8,875 shares of common stock was deferred resulting in the reporting person's receipt instead of 8,875 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 8,875 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 14, 2026, of 8,875 restricted stock units previously granted to the reporting person, the reporting person's receipt of 8,875 shares of common stock was deferred resulting in the reporting person's receipt instead of 8,875 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 8,875 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: 0001193125-26-355175 · ownership.xml · nonDerivative · entry 2

DUESER F SCOTT · CIK 0001243211 · Director · Executive Chairman

10b5-1 filing: No plan indicated

Ownership: Indirect · By Trust

Disclosed balance after: 506,387

F3 · shares: In connection with the vesting on August 14, 2026, of 8,875 restricted stock units previously granted to the reporting person, the reporting person's receipt of 8,875 shares of common stock was deferred resulting in the reporting person's receipt instead of 8,875 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 8,875 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 14, 2026, of 8,875 restricted stock units previously granted to the reporting person, the reporting person's receipt of 8,875 shares of common stock was deferred resulting in the reporting person's receipt instead of 8,875 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 8,875 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 · ownership.nature: Represents shares held by several trusts of which Mr. Dueser is trustee, settlor and beneficiary.

SEC source: 0001193125-26-355175 · ownership.xml · nonDerivative · entry 1

DUESER F SCOTT · CIK 0001243211 · Director · Executive Chairman

10b5-1 filing: No plan indicated

Ownership: Indirect · By Trust

Disclosed balance after: 515,262

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.

F2 · ownership.nature: Represents shares held by several trusts of which Mr. Dueser is trustee, settlor and beneficiary.

SEC source: 0001193125-25-322880 · ownership.xml · nonDerivative · entry 1

DUESER F SCOTT · CIK 0001243211 · Director · Chairman and CEO

10b5-1 filing: No plan indicated

Ownership: Indirect · By Trust

Disclosed balance after: 502,507

F1 · shares: This transaction includes the reporting person's gift of 12,800 shares of the issuer's stock to the Dueser Foundation and 2,432 shares to family members. The reporting person no longer has any beneficial ownership or pecuniary interest in such shares.

F2 · ownership.nature: Represents shares held by several trusts of which Mr. Dueser is trustee, settlor and beneficiary.

SEC source: 0000950170-25-110097 · ownership.xml · derivative · entry 4

DUESER F SCOTT · CIK 0001243211 · Director · Chairman and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 50,370

Underlying: Common Stock · 3,464 shares

Expires not disclosed

F2 · derivative.exercise_price: In connection with the vesting on August 16, 2025, of 3,464 restricted stock units previously granted to the reporting person, the reporting person's receipt of 3,464 shares of common stock was deferred resulting in the reporting person's receipt instead of 3,464 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 3,464 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, 2025, of 3,464 restricted stock units previously granted to the reporting person, the reporting person's receipt of 3,464 shares of common stock was deferred resulting in the reporting person's receipt instead of 3,464 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 3,464 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, 2025, of 3,464 restricted stock units previously granted to the reporting person, the reporting person's receipt of 3,464 shares of common stock was deferred resulting in the reporting person's receipt instead of 3,464 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 3,464 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, 2025, of 3,464 restricted stock units previously granted to the reporting person, the reporting person's receipt of 3,464 shares of common stock was deferred resulting in the reporting person's receipt instead of 3,464 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 3,464 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: 0000950170-25-110097 · ownership.xml · nonDerivative · entry 1

DUESER F SCOTT · CIK 0001243211 · Director · Chairman and CEO

10b5-1 filing: No plan indicated

Ownership: Indirect · By Trust

Disclosed balance after: 517,739

F2 · shares: In connection with the vesting on August 16, 2025, of 3,464 restricted stock units previously granted to the reporting person, the reporting person's receipt of 3,464 shares of common stock was deferred resulting in the reporting person's receipt instead of 3,464 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 3,464 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, 2025, of 3,464 restricted stock units previously granted to the reporting person, the reporting person's receipt of 3,464 shares of common stock was deferred resulting in the reporting person's receipt instead of 3,464 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 3,464 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 · ownership.nature: Represents shares held by several trusts of which Mr. Dueser is trustee, settlor and beneficiary.

SEC source: 0000950170-25-109675 · ownership.xml · derivative · entry 5

DUESER F SCOTT · CIK 0001243211 · Director · Chairman and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 46,906

Underlying: Common Stock · 4,757 shares

Expires not disclosed

F3 · derivative.exercise_price: In connection with the vesting on August 14, 2025, of 4,757 restricted stock units previously granted to the reporting person, the reporting person's receipt of 4,757 shares of common stock was deferred resulting in the reporting person's receipt instead of 4,757 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 4,757 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 14, 2025, of 4,757 restricted stock units previously granted to the reporting person, the reporting person's receipt of 4,757 shares of common stock was deferred resulting in the reporting person's receipt instead of 4,757 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 4,757 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 14, 2025, of 4,757 restricted stock units previously granted to the reporting person, the reporting person's receipt of 4,757 shares of common stock was deferred resulting in the reporting person's receipt instead of 4,757 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 4,757 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 14, 2025, of 4,757 restricted stock units previously granted to the reporting person, the reporting person's receipt of 4,757 shares of common stock was deferred resulting in the reporting person's receipt instead of 4,757 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 4,757 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: 0000950170-25-109675 · ownership.xml · nonDerivative · entry 2

DUESER F SCOTT · CIK 0001243211 · Director · Chairman and CEO

10b5-1 filing: No plan indicated

Ownership: Indirect · By Trust

Disclosed balance after: 521,203

F3 · shares: In connection with the vesting on August 14, 2025, of 4,757 restricted stock units previously granted to the reporting person, the reporting person's receipt of 4,757 shares of common stock was deferred resulting in the reporting person's receipt instead of 4,757 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 4,757 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 14, 2025, of 4,757 restricted stock units previously granted to the reporting person, the reporting person's receipt of 4,757 shares of common stock was deferred resulting in the reporting person's receipt instead of 4,757 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 4,757 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 · ownership.nature: Represents shares held by several trusts of which Mr. Dueser is trustee, settlor and beneficiary.

SEC source: 0000950170-25-109675 · ownership.xml · nonDerivative · entry 1

DUESER F SCOTT · CIK 0001243211 · Director · Chairman and CEO

10b5-1 filing: No plan indicated

Ownership: Indirect · By Trust

Disclosed balance after: 525,960

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.

F2 · ownership.nature: Represents shares held by several trusts of which Mr. Dueser is trustee, settlor and beneficiary.

SEC source: 0000950170-25-044414 · ownership.xml · derivative · entry 5

DUESER F SCOTT · CIK 0001243211 · Director · Chairman and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 42,149

Underlying: Common Stock · 15,591 shares

Expires not disclosed

F4 · derivative.exercise_price: In connection with the vesting of performance stock units previously granted on August 16, 2022, Mr. Dueser's receipt of 15,591 shares of common stock was deferred resulting in Mr. Dueser's receipt instead of 15,591 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. Dueser is therefore reporting the disposition of 15,591 performance stock units in exchange for an equal number of shares of deferred stock units under the SERP, which are payable upon Mr. Dueser's termination of employment.

F4 · price: In connection with the vesting of performance stock units previously granted on August 16, 2022, Mr. Dueser's receipt of 15,591 shares of common stock was deferred resulting in Mr. Dueser's receipt instead of 15,591 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. Dueser is therefore reporting the disposition of 15,591 performance stock units in exchange for an equal number of shares of deferred stock units under the SERP, which are payable upon Mr. Dueser's termination of employment.

F4 · derivative.exercise_date: In connection with the vesting of performance stock units previously granted on August 16, 2022, Mr. Dueser's receipt of 15,591 shares of common stock was deferred resulting in Mr. Dueser's receipt instead of 15,591 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. Dueser is therefore reporting the disposition of 15,591 performance stock units in exchange for an equal number of shares of deferred stock units under the SERP, which are payable upon Mr. Dueser's termination of employment.

F4 · derivative.expiration_date: In connection with the vesting of performance stock units previously granted on August 16, 2022, Mr. Dueser's receipt of 15,591 shares of common stock was deferred resulting in Mr. Dueser's receipt instead of 15,591 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. Dueser is therefore reporting the disposition of 15,591 performance stock units in exchange for an equal number of shares of deferred stock units under the SERP, which are payable upon Mr. Dueser's termination of employment.

SEC source: 0000950170-25-044414 · ownership.xml · nonDerivative · entry 2

DUESER F SCOTT · CIK 0001243211 · Director · Chairman and CEO

10b5-1 filing: No plan indicated

Ownership: Indirect · By Trust

Disclosed balance after: 513,608

F4 · shares: In connection with the vesting of performance stock units previously granted on August 16, 2022, Mr. Dueser's receipt of 15,591 shares of common stock was deferred resulting in Mr. Dueser's receipt instead of 15,591 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. Dueser is therefore reporting the disposition of 15,591 performance stock units in exchange for an equal number of shares of deferred stock units under the SERP, which are payable upon Mr. Dueser's termination of employment.

F4 · price: In connection with the vesting of performance stock units previously granted on August 16, 2022, Mr. Dueser's receipt of 15,591 shares of common stock was deferred resulting in Mr. Dueser's receipt instead of 15,591 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. Dueser is therefore reporting the disposition of 15,591 performance stock units in exchange for an equal number of shares of deferred stock units under the SERP, which are payable upon Mr. Dueser's termination of employment.

F2 · ownership.nature: Represents shares held by several trusts of which Mr. Dueser is trustee, settlor and beneficiary.

SEC source: 0000950170-25-044414 · ownership.xml · nonDerivative · entry 1

DUESER F SCOTT · CIK 0001243211 · Director · Chairman and CEO

10b5-1 filing: No plan indicated

Ownership: Indirect · By Trust

Disclosed balance after: 529,199

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.

F2 · ownership.nature: Represents shares held by several trusts of which Mr. Dueser is trustee, settlor and beneficiary.

SEC source: 0000950170-25-004725 · ownership.xml · nonDerivative · entry 1

DUESER F SCOTT · CIK 0001243211 · Director · Chairman and CEO

10b5-1 filing: No plan indicated

Ownership: Indirect · By Trust

Disclosed balance after: 513,608

F1 · shares: Mr. Dueser previously contributed shares of First Financial Bankshares, Inc. common stock to a grantor retained annuity trust for the benefit of himself and his three adult children. Upon termination of the trust on January 9, 2024, 144,664 shares were transferred to each of the reporting person's children. Mr. Dueser no longer has any beneficial ownership or pecuniary interest in such shares.

F2 · ownership.nature: Represents shares held by several trusts of which Mr. Dueser is trustee, settlor and beneficiary.

SEC source: 0000950170-24-136478 · ownership.xml · nonDerivative · entry 2

DUESER F SCOTT · CIK 0001243211 · Director · Chairman, President and CEO

10b5-1 filing: No plan indicated

Ownership: Indirect · By Partnership

Disclosed balance after: 471,004

F3 · shares: The sale of the shares was made as part of the family limited partnership's diversification plan in connection with the manager's fiduciary obligations.

F4 · ownership.nature: Represents shares that are owned by a family limited partnership of which Mr. Dueser serves as manager of the general partner and to which he disclaims beneficial ownership with respect to 353,253 shares. This report should not be deemed an admission that Mr. Dueser is the beneficial owner of these shares for purposes of Section 16 or any other purpose.

SEC source: 0000950170-24-136478 · ownership.xml · nonDerivative · entry 1

DUESER F SCOTT · CIK 0001243211 · Director · Chairman, President and CEO

10b5-1 filing: No plan indicated

Ownership: Indirect · By Trust

Disclosed balance after: 947,600

F1 · shares: This transaction involved the reporting person's gift of 11,000 shares of the issuer's stock to the Dueser Foundation. The reporting person no longer has any beneficial ownership or pecuniary interest in such shares.

F2 · ownership.nature: Represents shares held by several trusts of which Mr. Dueser is trustee, settlor and beneficiary.

SEC source: 0000950170-24-099197 · ownership.xml · derivative · entry 4

DUESER F SCOTT · CIK 0001243211 · Director · Chairman, President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 26,558

Underlying: Common Stock · 6,736 shares

Expires not disclosed

F1 · derivative.exercise_price: In connection with the vesting on August 16, 2024, of 6,736 restricted stock units previously granted to Mr. Dueser, Mr. Dueser's receipt of 6,736 shares of common stock was deferred resulting in Mr. Dueser's receipt instead of 6,736 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. Dueser is therefore reporting the disposition of 6,736 restricted stock units in exchange for an equal number of shares of deferred stock units under the SERP, which are payable upon Mr. Dueser's termination of employment.

F1 · price: In connection with the vesting on August 16, 2024, of 6,736 restricted stock units previously granted to Mr. Dueser, Mr. Dueser's receipt of 6,736 shares of common stock was deferred resulting in Mr. Dueser's receipt instead of 6,736 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. Dueser is therefore reporting the disposition of 6,736 restricted stock units in exchange for an equal number of shares of deferred stock units under the SERP, which are payable upon Mr. Dueser's termination of employment.

F1 · derivative.exercise_date: In connection with the vesting on August 16, 2024, of 6,736 restricted stock units previously granted to Mr. Dueser, Mr. Dueser's receipt of 6,736 shares of common stock was deferred resulting in Mr. Dueser's receipt instead of 6,736 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. Dueser is therefore reporting the disposition of 6,736 restricted stock units in exchange for an equal number of shares of deferred stock units under the SERP, which are payable upon Mr. Dueser's termination of employment.

F1 · derivative.expiration_date: In connection with the vesting on August 16, 2024, of 6,736 restricted stock units previously granted to Mr. Dueser, Mr. Dueser's receipt of 6,736 shares of common stock was deferred resulting in Mr. Dueser's receipt instead of 6,736 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. Dueser is therefore reporting the disposition of 6,736 restricted stock units in exchange for an equal number of shares of deferred stock units under the SERP, which are payable upon Mr. Dueser's termination of employment.

SEC source: 0000950170-24-099197 · ownership.xml · nonDerivative · entry 1

DUESER F SCOTT · CIK 0001243211 · Director · Chairman, President and CEO

10b5-1 filing: No plan indicated

Ownership: Indirect · By Trust

Disclosed balance after: 958,600

F1 · shares: In connection with the vesting on August 16, 2024, of 6,736 restricted stock units previously granted to Mr. Dueser, Mr. Dueser's receipt of 6,736 shares of common stock was deferred resulting in Mr. Dueser's receipt instead of 6,736 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. Dueser is therefore reporting the disposition of 6,736 restricted stock units in exchange for an equal number of shares of deferred stock units under the SERP, which are payable upon Mr. Dueser's termination of employment.

F1 · price: In connection with the vesting on August 16, 2024, of 6,736 restricted stock units previously granted to Mr. Dueser, Mr. Dueser's receipt of 6,736 shares of common stock was deferred resulting in Mr. Dueser's receipt instead of 6,736 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. Dueser is therefore reporting the disposition of 6,736 restricted stock units in exchange for an equal number of shares of deferred stock units under the SERP, which are payable upon Mr. Dueser's termination of employment.

F2 · ownership.nature: Represents shares held by several trusts of which Mr. Dueser is trustee, settlor and beneficiary.

SEC source: 0000950170-24-097437 · ownership.xml · derivative · entry 4

DUESER F SCOTT · CIK 0001243211 · Director · Chairman, President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 24,623

Underlying: Common Stock · 24,623 shares

Expires 2034-08-14

F5 · 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: 0000950170-24-097437 · ownership.xml · nonDerivative · entry 1

DUESER F SCOTT · CIK 0001243211 · Director · Chairman, President and CEO

10b5-1 filing: No plan indicated

Ownership: Indirect · By Trust

Disclosed balance after: 965,336

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.

F2 · ownership.nature: Represents shares held by several trusts of which Mr. Dueser is trustee, settlor and beneficiary.

SEC source: 0000950170-24-089462 · ownership.xml · nonDerivative · entry 1

DUESER F SCOTT · CIK 0001243211 · Director · Chairman, President and CEO

10b5-1 filing: No plan indicated

Ownership: Indirect · By Partnership

Disclosed balance after: 408,310

F1 · shares: This transaction was executed for financial planning purposes.

F2 · ownership.nature: Represents shares that are owned by a family limited partnership of which Mr. Dueser serves as manager of the general partner and to which he disclaims beneficial ownership with respect to 291,125 shares. This report should not be deemed an admission that Mr. Dueser is the beneficial owner of these shares for purpose of Section 16 or any other purpose.

SEC source: 0001209191-24-004978 · doc4.xml · derivative · entry 5

DUESER F SCOTT · CIK 0001243211 · Director · Chairman, President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 19,822

Underlying: Common Stock · 9,814 shares

Expires not disclosed

F1 · derivative.exercise_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.

F3 · derivative.exercise_price: In connection with the vesting on March 18, 2024, of 9,814 performance stock units previously granted to Mr. Dueser on August 16, 2021, Mr. Dueser's receipt of 9,814 shares of common stock was deferred resulting in Mr. Dueser's receipt instead of 9,814 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. Dueser is therefore reporting the disposition of 9,814 performance stock units in exchange for an equal number of shares of deferred stock units under the SERP, which are payable upon Mr. Dueser's termination of employment.

F3 · price: In connection with the vesting on March 18, 2024, of 9,814 performance stock units previously granted to Mr. Dueser on August 16, 2021, Mr. Dueser's receipt of 9,814 shares of common stock was deferred resulting in Mr. Dueser's receipt instead of 9,814 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. Dueser is therefore reporting the disposition of 9,814 performance stock units in exchange for an equal number of shares of deferred stock units under the SERP, which are payable upon Mr. Dueser's termination of employment.

F3 · derivative.exercise_date: In connection with the vesting on March 18, 2024, of 9,814 performance stock units previously granted to Mr. Dueser on August 16, 2021, Mr. Dueser's receipt of 9,814 shares of common stock was deferred resulting in Mr. Dueser's receipt instead of 9,814 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. Dueser is therefore reporting the disposition of 9,814 performance stock units in exchange for an equal number of shares of deferred stock units under the SERP, which are payable upon Mr. Dueser's termination of employment.

F3 · derivative.expiration_date: In connection with the vesting on March 18, 2024, of 9,814 performance stock units previously granted to Mr. Dueser on August 16, 2021, Mr. Dueser's receipt of 9,814 shares of common stock was deferred resulting in Mr. Dueser's receipt instead of 9,814 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. Dueser is therefore reporting the disposition of 9,814 performance stock units in exchange for an equal number of shares of deferred stock units under the SERP, which are payable upon Mr. Dueser's termination of employment.

SEC source: 0001209191-24-004978 · doc4.xml · nonDerivative · entry 2

DUESER F SCOTT · CIK 0001243211 · Director · Chairman, President and CEO

10b5-1 filing: No plan indicated

Ownership: Indirect · By Trust

Disclosed balance after: 951,065

F3 · shares: In connection with the vesting on March 18, 2024, of 9,814 performance stock units previously granted to Mr. Dueser on August 16, 2021, Mr. Dueser's receipt of 9,814 shares of common stock was deferred resulting in Mr. Dueser's receipt instead of 9,814 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. Dueser is therefore reporting the disposition of 9,814 performance stock units in exchange for an equal number of shares of deferred stock units under the SERP, which are payable upon Mr. Dueser's termination of employment.

F3 · price: In connection with the vesting on March 18, 2024, of 9,814 performance stock units previously granted to Mr. Dueser on August 16, 2021, Mr. Dueser's receipt of 9,814 shares of common stock was deferred resulting in Mr. Dueser's receipt instead of 9,814 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. Dueser is therefore reporting the disposition of 9,814 performance stock units in exchange for an equal number of shares of deferred stock units under the SERP, which are payable upon Mr. Dueser's termination of employment.

F2 · ownership.nature: Represents shares held by several trusts of which Mr. Dueser is trustee, settlor and beneficiary.

SEC source: 0001209191-24-004978 · doc4.xml · nonDerivative · entry 1

DUESER F SCOTT · CIK 0001243211 · Director · Chairman, President and CEO

10b5-1 filing: No plan indicated

Ownership: Indirect · By Trust

Disclosed balance after: 960,879

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.

F2 · ownership.nature: Represents shares held by several trusts of which Mr. Dueser is trustee, settlor and beneficiary.

SEC source: 0001209191-24-003512 · doc4.xml · derivative · entry 4

DUESER F SCOTT · CIK 0001243211 · Director · Chairman, President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 20,000 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: 0001209191-24-003512 · doc4.xml · nonDerivative · entry 1

DUESER F SCOTT · CIK 0001243211 · Director · Chairman, President and CEO

10b5-1 filing: No plan indicated

Ownership: Indirect · By Trust

Disclosed balance after: 951,065

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.

F1 · ownership.nature: Represents shares held by several trusts of which Mr. Dueser is trustee, settlor and beneficiary.

SEC source: 0001209191-23-058725 · doc4.xml · nonDerivative · entry 2

DUESER F SCOTT · CIK 0001243211 · Director · Chairman, President and CEO

10b5-1 filing: No plan indicated

Ownership: Indirect · By Trust

Disclosed balance after: 931,065

F2 · shares: This transaction involved the reporting person's gift of 18,786 shares of the issuer's stock to the Dueser Foundation. The reporting person no longer has any beneficial ownership or pecuniary interest in such shares.

F1 · ownership.nature: Represents shares held by several trusts of which Mr. Dueser is trustee, settlor and beneficiary.

SEC source: 0001209191-23-058725 · doc4.xml · nonDerivative · entry 1

DUESER F SCOTT · CIK 0001243211 · Director · Chairman, President and CEO

10b5-1 filing: No plan indicated

Ownership: Indirect · By Trust

Disclosed balance after: 949,851

F1 · ownership.nature: Represents shares held by several trusts of which Mr. Dueser is trustee, settlor and beneficiary.

SEC source: 0001209191-23-053951 · doc4.xml · nonDerivative · entry 1

DUESER F SCOTT · CIK 0001243211 · Director · Chairman, President and CEO

10b5-1 filing: No plan indicated

Ownership: Indirect · By Trust

Disclosed balance after: 952,215

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

F2 · ownership.nature: Represents shares held by several trusts of which Mr. Dueser is trustee, settlor and beneficiary.

SEC source: 0001209191-23-046568 · doc4.xml · derivative · entry 5

DUESER F SCOTT · CIK 0001243211 · Director · Chairman, President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 10,008

Underlying: Common Stock · 6,736 shares

Expires not disclosed

F1 · derivative.exercise_price: In connection with the vesting on August 16, 2023, of 3,271 restricted stock units previously granted to Mr. Dueser on August 16, 2021, Mr. Dueser's receipt of 3,271 shares of common stock was deferred resulting in Mr. Dueser's receipt instead of 3,271 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. Dueser is therefore reporting the disposition of 3,271 restricted stock units in exchange for an equal number of shares of deferred stock units under the SERP, which are payable upon Mr. Dueser's termination of employment.

F3 · derivative.exercise_price: In connection with the vesting on August 16, 2023, of 3,465 restricted stock units previously granted to Mr. Dueser on August 16, 2022, Mr. Dueser's receipt of 3,465 shares of common stock was deferred resulting in Mr. Dueser's receipt instead of 3,465 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. Dueser is therefore reporting the disposition of 3,465 restricted stock units in exchange for an equal number of shares of deferred stock units under the SERP, which are payable upon Mr. Dueser's termination of employment.

F1 · price: In connection with the vesting on August 16, 2023, of 3,271 restricted stock units previously granted to Mr. Dueser on August 16, 2021, Mr. Dueser's receipt of 3,271 shares of common stock was deferred resulting in Mr. Dueser's receipt instead of 3,271 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. Dueser is therefore reporting the disposition of 3,271 restricted stock units in exchange for an equal number of shares of deferred stock units under the SERP, which are payable upon Mr. Dueser's termination of employment.

F3 · price: In connection with the vesting on August 16, 2023, of 3,465 restricted stock units previously granted to Mr. Dueser on August 16, 2022, Mr. Dueser's receipt of 3,465 shares of common stock was deferred resulting in Mr. Dueser's receipt instead of 3,465 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. Dueser is therefore reporting the disposition of 3,465 restricted stock units in exchange for an equal number of shares of deferred stock units under the SERP, which are payable upon Mr. Dueser's termination of employment.

F1 · derivative.exercise_date: In connection with the vesting on August 16, 2023, of 3,271 restricted stock units previously granted to Mr. Dueser on August 16, 2021, Mr. Dueser's receipt of 3,271 shares of common stock was deferred resulting in Mr. Dueser's receipt instead of 3,271 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. Dueser is therefore reporting the disposition of 3,271 restricted stock units in exchange for an equal number of shares of deferred stock units under the SERP, which are payable upon Mr. Dueser's termination of employment.

F3 · derivative.exercise_date: In connection with the vesting on August 16, 2023, of 3,465 restricted stock units previously granted to Mr. Dueser on August 16, 2022, Mr. Dueser's receipt of 3,465 shares of common stock was deferred resulting in Mr. Dueser's receipt instead of 3,465 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. Dueser is therefore reporting the disposition of 3,465 restricted stock units in exchange for an equal number of shares of deferred stock units under the SERP, which are payable upon Mr. Dueser's termination of employment.

F1 · derivative.expiration_date: In connection with the vesting on August 16, 2023, of 3,271 restricted stock units previously granted to Mr. Dueser on August 16, 2021, Mr. Dueser's receipt of 3,271 shares of common stock was deferred resulting in Mr. Dueser's receipt instead of 3,271 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. Dueser is therefore reporting the disposition of 3,271 restricted stock units in exchange for an equal number of shares of deferred stock units under the SERP, which are payable upon Mr. Dueser's termination of employment.

F3 · derivative.expiration_date: In connection with the vesting on August 16, 2023, of 3,465 restricted stock units previously granted to Mr. Dueser on August 16, 2022, Mr. Dueser's receipt of 3,465 shares of common stock was deferred resulting in Mr. Dueser's receipt instead of 3,465 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. Dueser is therefore reporting the disposition of 3,465 restricted stock units in exchange for an equal number of shares of deferred stock units under the SERP, which are payable upon Mr. Dueser's termination of employment.

SEC source: 0001209191-23-046568 · doc4.xml · nonDerivative · entry 2

DUESER F SCOTT · CIK 0001243211 · Director · Chairman, President and CEO

10b5-1 filing: No plan indicated

Ownership: Indirect · By Trust

Disclosed balance after: 952,868

F3 · shares: In connection with the vesting on August 16, 2023, of 3,465 restricted stock units previously granted to Mr. Dueser on August 16, 2022, Mr. Dueser's receipt of 3,465 shares of common stock was deferred resulting in Mr. Dueser's receipt instead of 3,465 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. Dueser is therefore reporting the disposition of 3,465 restricted stock units in exchange for an equal number of shares of deferred stock units under the SERP, which are payable upon Mr. Dueser's termination of employment.

F3 · price: In connection with the vesting on August 16, 2023, of 3,465 restricted stock units previously granted to Mr. Dueser on August 16, 2022, Mr. Dueser's receipt of 3,465 shares of common stock was deferred resulting in Mr. Dueser's receipt instead of 3,465 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. Dueser is therefore reporting the disposition of 3,465 restricted stock units in exchange for an equal number of shares of deferred stock units under the SERP, which are payable upon Mr. Dueser's termination of employment.

F2 · ownership.nature: Represents shares held by several trusts of which Mr. Dueser is trustee, settlor and beneficiary.

SEC source: 0001209191-23-046568 · doc4.xml · nonDerivative · entry 1

DUESER F SCOTT · CIK 0001243211 · Director · Chairman, President and CEO

10b5-1 filing: No plan indicated

Ownership: Indirect · By Trust

Disclosed balance after: 956,333

F1 · shares: In connection with the vesting on August 16, 2023, of 3,271 restricted stock units previously granted to Mr. Dueser on August 16, 2021, Mr. Dueser's receipt of 3,271 shares of common stock was deferred resulting in Mr. Dueser's receipt instead of 3,271 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. Dueser is therefore reporting the disposition of 3,271 restricted stock units in exchange for an equal number of shares of deferred stock units under the SERP, which are payable upon Mr. Dueser's termination of employment.

F1 · price: In connection with the vesting on August 16, 2023, of 3,271 restricted stock units previously granted to Mr. Dueser on August 16, 2021, Mr. Dueser's receipt of 3,271 shares of common stock was deferred resulting in Mr. Dueser's receipt instead of 3,271 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. Dueser is therefore reporting the disposition of 3,271 restricted stock units in exchange for an equal number of shares of deferred stock units under the SERP, which are payable upon Mr. Dueser's termination of employment.

F2 · ownership.nature: Represents shares held by several trusts of which Mr. Dueser is trustee, settlor and beneficiary.

SEC source: 0001209191-23-006545 · doc4.xml · derivative · entry 4

DUESER F SCOTT · CIK 0001243211 · Director · Chairman, President and CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 20,000

Underlying: Common Stock · 20,000 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: 0001209191-23-006545 · doc4.xml · nonDerivative · entry 1

DUESER F SCOTT · CIK 0001243211 · Director · Chairman, President and CEO

10b5-1 filing: Not disclosed

Ownership: Indirect · By Trust

Disclosed balance after: 959,604

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.

F1 · ownership.nature: Represents shares held by several trusts of which Mr. Dueser is trustee, settlor and beneficiary.

SEC source: 0001209191-22-055625 · doc4.xml · nonDerivative · entry 2

DUESER F SCOTT · CIK 0001243211 · Director · Chairman, President and CEO

10b5-1 filing: Not disclosed

Ownership: Indirect · By Trust

Disclosed balance after: 939,604

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 1,210 shares of the Registrant's common stock to pay income taxes related to vesting of previously granted restricted stock.

F2 · ownership.nature: Represents shares held by several trusts of which Mr. Dueser is trustee, settlor and beneficiary.

SEC source: 0001209191-22-055625 · doc4.xml · nonDerivative · entry 1

DUESER F SCOTT · CIK 0001243211 · Director · Chairman, President and CEO

10b5-1 filing: Not disclosed

Ownership: Indirect · By Trust

Disclosed balance after: 940,257

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 1,210 shares of the Registrant's common stock to pay income taxes related to vesting of previously granted restricted stock.

F2 · ownership.nature: Represents shares held by several trusts of which Mr. Dueser is trustee, settlor and beneficiary.

SEC source: 0001209191-22-054609 · doc4.xml · nonDerivative · entry 1

DUESER F SCOTT · CIK 0001243211 · Director · Chairman, President and CEO

10b5-1 filing: Not disclosed

Ownership: Indirect · By Trust

Disclosed balance after: 940,814

F1 · ownership.nature: Represents shares held by several trusts of which Mr. Dueser is trustee, settlor and beneficiary.

SEC source: 0001209191-22-046704 · doc4.xml · derivative · entry 6

DUESER F SCOTT · CIK 0001243211 · Director · Chairman, President and CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 3,272

Underlying: Common Stock · 3,272 shares

Expires not disclosed

F1 · derivative.exercise_date: In connection with the vesting on August 16, 2022 of 3,272 restricted stock units previously granted to Mr. Dueser on August 16, 2021, Mr. Dueser's receipt of 3,272 shares of common stock was deferred, resulting in Mr. Dueser's receipt instead of 3,272 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. Dueser is therefore reporting the disposition of 3,272 restricted stock units in exchange for an equal number of shares of deferred stock units under the SERP, which are payable upon Mr. Dueser's termination of employment.

F1 · derivative.expiration_date: In connection with the vesting on August 16, 2022 of 3,272 restricted stock units previously granted to Mr. Dueser on August 16, 2021, Mr. Dueser's receipt of 3,272 shares of common stock was deferred, resulting in Mr. Dueser's receipt instead of 3,272 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. Dueser is therefore reporting the disposition of 3,272 restricted stock units in exchange for an equal number of shares of deferred stock units under the SERP, which are payable upon Mr. Dueser's termination of employment.

SEC source: 0001209191-22-046704 · doc4.xml · derivative · entry 5

DUESER F SCOTT · CIK 0001243211 · Director · Chairman, President and CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 21,236

Underlying: Common Stock · 21,326 shares

Expires 2032-08-16

F6 · 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: 0001209191-22-046704 · doc4.xml · nonDerivative · entry 2

DUESER F SCOTT · CIK 0001243211 · Director · Chairman, President and CEO

10b5-1 filing: Not disclosed

Ownership: Indirect · By Trust

Disclosed balance after: 939,814

F3 · 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.

F2 · ownership.nature: Represents shares held by several trusts of which Mr. Dueser is trustee, settlor and beneficiary.

SEC source: 0001209191-22-046704 · doc4.xml · nonDerivative · entry 1

DUESER F SCOTT · CIK 0001243211 · Director · Chairman, President and CEO

10b5-1 filing: Not disclosed

Ownership: Indirect · By Trust

Disclosed balance after: 929,420

F1 · shares: In connection with the vesting on August 16, 2022 of 3,272 restricted stock units previously granted to Mr. Dueser on August 16, 2021, Mr. Dueser's receipt of 3,272 shares of common stock was deferred, resulting in Mr. Dueser's receipt instead of 3,272 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. Dueser is therefore reporting the disposition of 3,272 restricted stock units in exchange for an equal number of shares of deferred stock units under the SERP, which are payable upon Mr. Dueser's termination of employment.

F2 · ownership.nature: Represents shares held by several trusts of which Mr. Dueser is trustee, settlor and beneficiary.

SEC source: 0001209191-22-039605 · doc4.xml · nonDerivative · entry 1

DUESER F SCOTT · CIK 0001243211 · Director · Chairman, President and CEO

10b5-1 filing: Not disclosed

Ownership: Indirect · By Trust

Disclosed balance after: 932,692

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 1,569 shares of the Registrant's common stock to pay income taxes related to vesting of previously granted restricted stock.

F2 · ownership.nature: Represents shares held by several trusts of which Mr. Dueser is trustee, settlor and beneficiary.

SEC source: 0001209191-22-007689 · doc4.xml · derivative · entry 6

DUESER F SCOTT · CIK 0001243211 · Director · Chairman, President and CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 40,000

Underlying: Common Stock · 20,000 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: 0001209191-22-007689 · doc4.xml · derivative · entry 5

DUESER F SCOTT · CIK 0001243211 · Director · Chairman, President and CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 12,000 shares

Expires 2025-10-27

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: 0001209191-22-007689 · doc4.xml · nonDerivative · entry 2

DUESER F SCOTT · CIK 0001243211 · Director · Chairman, President and CEO

10b5-1 filing: Not disclosed

Ownership: Indirect · By Trust

Disclosed balance after: 934,261

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.

F1 · ownership.nature: Represents shares held by several trusts of which Mr. Dueser is trustee, settlor and beneficiary.

SEC source: 0001209191-22-007689 · doc4.xml · nonDerivative · entry 1

DUESER F SCOTT · CIK 0001243211 · Director · Chairman, President and CEO

10b5-1 filing: Not disclosed

Ownership: Indirect · By Trust

Disclosed balance after: 914,261

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.

F1 · ownership.nature: Represents shares held by several trusts of which Mr. Dueser is trustee, settlor and beneficiary.

SEC source: 0001209191-21-069802 · doc4.xml · nonDerivative · entry 1

DUESER F SCOTT · CIK 0001243211 · Director · Chairman, President and CEO

10b5-1 filing: Not disclosed

Ownership: Indirect · By Partnership

Disclosed balance after: 496,004

F1 · shares: The sale of the shares was made as part of the family limited partnership's diversification plan in connection with the manager's fiduciary obligations.

F2 · ownership.nature: Represents shares that are owned by a family limited partnership of which Mr. Dueser serves as manager of the general partner and to which he disclaims beneficial ownership with respect to 372,003 shares. This report should not be deemed an admission that Mr. Dueser is the beneficial owner of these shares for purposes of Section 16 or any other purpose.

SEC source: 0001209191-21-062065 · doc4.xml · nonDerivative · entry 1

DUESER F SCOTT · CIK 0001243211 · Director · Chairman, President and CEO

10b5-1 filing: Not disclosed

Ownership: Indirect · By Trust

Disclosed balance after: 902,261

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 1,886 shares of the Registrant's common stock to pay income taxes related to vesting of previously granted restricted stock.

F2 · ownership.nature: The total shares represented are held in various trusts of which Mr. Dueser is the trustee, settlor and beneficiary.

SEC source: 0001209191-21-052194 · doc4.xml · derivative · entry 4

DUESER F SCOTT · CIK 0001243211 · Director · Chairman, President and CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 18,476

Underlying: Common Stock · 18,476 shares

Expires 2031-08-16

F5 · 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: 0001209191-21-052194 · doc4.xml · nonDerivative · entry 1

DUESER F SCOTT · CIK 0001243211 · Director · Chairman, President and CEO

10b5-1 filing: Not disclosed

Ownership: Indirect · By Trust

Disclosed balance after: 904,147

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.

F2 · ownership.nature: The total shares represented are held in various trusts of which Mr. Dueser is the trustee, settlor and beneficiary.

SEC source: 0001209191-21-043628 · doc4.xml · nonDerivative · entry 1

DUESER F SCOTT · CIK 0001243211 · Director · Chairman, President and CEO

10b5-1 filing: Not disclosed

Ownership: Indirect · By Trust

Disclosed balance after: 894,333

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

F2 · ownership.nature: The total shares represented are held in various trusts of which Mr. Dueser is the trustee, settlor and beneficiary.