Lon A. Biebighauser - 14 Aug 2026 Form 4 Insider Report for FIRST FINANCIAL BANKSHARES INC (FFIN)

Reporting relationship: Trust Company President
Issuer ticker: FFIN
Reported as of: 14 Aug 2026
Net transaction value: $0
SEC form: 4
Accepted by SEC: 18 Aug 2026, 16:51:42 UTC
Prior SEC filing: 07 May 2026
Source filing: View source filing
Reporting owner signature: Michelle S. Hickox Attorney in Fact for Lon A. Biebighauser

Key filing fact

Lon A. Biebighauser filed Form 4 for FIRST FINANCIAL BANKSHARES INC (FFIN) on 18 Aug 2026.

Key facts

This page summarizes Lon A. Biebighauser's Form 4 filing for FIRST FINANCIAL BANKSHARES INC (FFIN).
4 reported transactions and 1 derivative row are listed below.
Accepted by SEC: 18 Aug 2026, 16:51.

Change

Previous filing in this sequence was filed on 07 May 2026.
Current net transaction value: $0.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0002050559 Primary reporting owner

Biebighauser Lon A.

Relationship: Trust Company President
Address: P O BOX 701, ABILENE
Signature: Michelle S. Hickox Attorney in Fact for Lon A. Biebighauser
Signature date: 18 Aug 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

FFIN transaction

Common Stock

Award

Transaction value
Shares: +1,429
Change %: +13%
Price: $0.000000^*
Shares after: 12,442
Date: 14 Aug 2026
Ownership: Direct
Footnotes: F1

FFIN transaction

Common Stock

Tax liability

Transaction value
Shares: -94
Change %: -0.76%
Price: $35.28^*
Shares after: 12,348
Date: 14 Aug 2026
Ownership: Direct
Footnotes: F2

FFIN transaction

Common Stock

Gift

Transaction value
Shares: -570
Change %: -4.6%
Price: $0.000000^*
Shares after: 11,778
Date: 17 Aug 2026
Ownership: Direct

Reported derivative securities

Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.

FFIN transaction Derivative

Employee Stock Option, Right to Buy

Award

Transaction value
Shares: +2,653
Change %
Price: $35.28^*
Shares after: 2,653
Date: 14 Aug 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 2,653
Exercise price: $35.28
Footnotes: F3

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 3 footnotes

Footnote 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.

Footnote F2

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

Footnote F3

The options vest 33.33% after one year from the grant date, 66.66% after the second year, and 100% after the third year.