InsiderTrades

Form 4 for FFIN FIRST FINANCIAL BANKSHARES INC

Accepted 2026-08-18 13:54:12 ET · period of report 2026-08-14 · accession 0001193125-26-355175 · SEC index · Original document

Summary rows

Aggregated the way they appear in lists: one row per insider, transaction code and security table.

X Filed Traded Ticker Insider Title Type Price Qty Owned ΔOwn Value
DI 2026-08-18 13:54 2026-08-14 FFIN DUESER F SCOTT Executive COB, Dir A - Grant $0.00 +12.8K 515.3K +3% $0
DI 2026-08-18 13:54 2026-08-14 FFIN DUESER F SCOTT Executive COB, Dir D - Sale to Iss — -8,875 506.4K -2% —
D 2026-08-18 13:54 2026-08-14 FFIN DUESER F SCOTT Executive COB, Dir A - Grant — +8,875 59.2K +18% —

Purchase Sale Sale after option exercise All abbreviations

Every reported transaction

#TableSecurityDateCodeA/DSharesPriceOwned afterOwnExercise / expiryUnderlyingFootnotes
1 Common Common Stock 2026-08-14 A A 12,755 $0.00 515,262 I By Trust — — (F1) 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) Represents shares held by several trusts of which Mr. Dueser is trustee, settlor and beneficiary.
2 Common Common Stock 2026-08-14 D D 8,875 — 506,387 I By Trust — — (F3) 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) 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) Represents shares held by several trusts of which Mr. Dueser is trustee, settlor and beneficiary.
3 Derivative Deferred Stock Units 2026-08-14 A A 8,875 — 59,245 D — · — to — 8,875 Common Stock (F3) 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) 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) 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) 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.