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Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington , D.C. 20549 ANNUAL REPORT PURSUANT TO SECTION 13 OR 15 ( d ) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31 , 2020 1934 TRANSITION REPORT PURSUANT TO SECTION 13 OR 15 ( d ) OF THE SECURITIES EXCHANGE ACT OF FORM 10 - K For the transition period from_ Texas ( State or other jurisdiction of incorporation or organization ) 400 Pine Street , Abilene , Texas ( Address of principal executive offices ) or Registrant's telephone number , including area code : First Financial Bankshares , Inc. ( Exact name of registrant as specified in its charter ) Title of each class Common Stock , par value $ 0.01 per share to Commission file number 0-7674 Securities registered pursuant to Section 12 ( b ) of the Act : Trading Symbol ( s ) FFIN Securities registered pursuant to Section 12 ( g ) of the Act : None 75-0944023 ( I.R.S. Employer Identification No. ) 79601 ( Zip Code ) ( 325 ) 627-7155 Name of exchange on which registered The Nasdaq Global Select Market Indicate by check mark if the registrant is a well - known seasoned issuer , as defined in Rule 405 of the Securities Act . Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or Section 15 ( d ) of the Act . Yes Indicate by check mark whether the registrant ( 1 ) has filed all reports required to be filed by Section 13 or 15 ( d ) of the Securities Exchange Act of 1934 during the preceding 12 months ( or for such shorter period that the registrant was required to file such reports ) , and ( 2 ) has been subject to such filing requirements for the past 90 days . Yes No □ Yes > No □ No 区 Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S - T ( § 232.405 of this chapter ) during the preceding 12 months ( or for such shorter period that the registrant was required to submit and post such files ) . Yes NO □ Indicate by check mark whether the registrant is a large accelerated filer , an accelerated filer , a non - accelerated filer , a smaller reporting company or an emerging growth company . See the definitions of " large accelerated filer " , " accelerated file " , “ smaller reporting company ” and “ emerging growth company " in Rule 12b - 2 of the Exchange Act .