SEC Form 4 · accession 0001193125-26-355175

FIRST FINANCIAL BANKSHARES INC · FFIN

Statement of changes in beneficial ownership, as filed. Original on EDGAR ↗

Reporting owner

F Scott Dueser

Officer — Executive Chairman · Director

Period of report

Aug 14, 2026

Accepted (ET)

Aug 18, 2026 · 1:54 pm EDT

Rule 10b5-1 plan

box not checked

Issuer CIK

0000036029

Table I — non-derivative securities

Security	Date	Code	Shares	Price	A/D	Owned after	D/I	Nature of ownership
Common Stock^F1,F2	Aug 14, 2026	A	12,755	$0.00	A	515,262	I	By Trust
Common Stock^F3,F2	Aug 14, 2026	D	8,875	—	D	506,387	I	By Trust
Common Stock^F4	holding	—	—		—	471,004	I	By Partnership
Common Stock^F5	holding	—	—		—	408,310	I	By Partnership

Table II — derivative securities

Security	Conv. / exercise price	Date	Code	Shares	A/D	Exercisable	Expires	Underlying	Underlying shares	Owned after	D/I
Deferred Stock Units^F3	—	Aug 14, 2026	A	8,875	A	—	—	Common Stock	8,875	59,245	D

Explanation of responses

F1Reflects grant of restricted stock units (RSUs) which vest in three approximately equal installments on each of the three anniversaries of the grant date.
F2Represents shares held by several trusts of which Mr. Dueser is trustee, settlor and beneficiary.
F3In 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.
F4Represents 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.
F5Represents 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 purposes of Section 16 or any other purpose.