Shareholder Vote · Reg FD Disclosure

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549   FORM 8-K       CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of Earliest Event Reported ): April 28, 2026     First Financial Bankshares, Inc. (Exact name of registrant as specified in its Charter)     Texas 0-07674 75-0944023 (State or other jurisdiction of incorporation or organization) (Commission File No.) (I.R.S. Employer Identification No.)     400 Pine Street , Abilene , Texas 79601     (Address of Principal Executive Offices and Zip Code)       Registrant’s Telephone Number ( 325 ) 627-7155       Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:   ☐ Written communications pursuant to Rule 425 under the Securities Act (17 CFR 203.425) ☐ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12) ☐ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2 (b)) ☐   Pre-commencement communications pursuant to Rule 13e-4 (c) under the Exchange Act (17 CFR 240.13 e-4 (c)) Securities registered pursuant to Section 12(b) of the Act: Title of each class   Trading Symbol(s)   Name of each exchange on which registered Common Stock, $0.01 par value   FFIN   The Nasdaq Global Select Market   Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 or Rule 12b-2 of the Securities Exchange Act of 1934.   Emerging growth company ☐ If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐           ITEM 5.07 SUBMISSION OF MATTERS TO A VOTE OF SECURITY HOLDERS (a) On April 28, 2026, the annual meeting of shareholders of the Company was held in Abilene, Texas. (b) The following is a summary of the matters voted on at the annual meeting: (1) The following directors were elected at the annual meeting to hold office until the 2027 annual meeting of shareholders, and the respective number of votes cast for and withheld are as follows:   Director   Votes For     Votes Withheld   Vianei Lopez Braun     108,412,469       2,073,247   David L. Copeland     107,215,734       3,269,982   Sally Pope Davis     109,796,816       688,900   Michael B. Denny     109,801,149       684,567   F. Scott Dueser     109,029,741       1,455,975   Murray H. Edwards     106,861,853       3,623,863   Geoff Haney     110,012,056       473,660   Eli Jones, Ph.D.     109,434,868       1,050,848   I. Tim Lancaster     104,350,901       6,134,815   Kade L. Matthews     108,566,159       1,919,557   Robert C. Nickles     108,239,063       2,246,653   Blake Poutra     110,039,940       445,776   Lota S. Zoth     109,994,472       491,244     There were 18,114,378 broker non-votes. (2) The shareholders voted to ratify the appointment of Ernst & Young LLP to serve as the Company’s independent registered public accounting firm for the year ending December 31, 2026 by a vote of 126,353,649 for, 2,020,446 against and 225,999 abstained. There were no broker non-votes. (3) The shareholders approved the following resolution: “RESOLVED, that the shareholders of First Financial Bankshares, Inc. hereby approve, on an advisory basis, the compensation paid to the Company’s named executive officers, as disclosed pursuant to Item 402 of Regulation S-K in the Company’s Proxy Statement for the 2026 Annual Meeting of Shareholders, including the Compensation Discussion and Analysis compensation tables and narrative discussion,” by a vote of 101,942,536 for, 4,885,300 against and 3,657,880 abstained. There were 18,114,378 broker non-votes.     ITEM 7.01 REGULATION FD DISCLOSURE   Attached as exhibit 99.1 to this Form 8-K is the press release dated April 28, 2026 announcing items discussed and the results of the Annual Meeting of Shareholders of the Company and the Company.   ITEM 9.01 FINANCIAL STATEMENTS AND EXHIBITS   99.1 Press Release dated April 28, 2026 104 Cover Page Interactive Data File (embedded within Inline XBRL document)     SIGNATURES   Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this Report to be signed on its behalf by the undersigned hereunto duly authorized.         FIRST FINANCIAL BANKSHARES, INC.     (Registrant)       DATE: April 28, 2026 By: /s/ David W. Bailey     DAVID W. BAILEY     President and Chief Executive Officer