Spirit of Texas Bancshares (STXB) 10-Q 2021 Q1 Quarterly report

Exhibit 32.1

CERTIFICATION PURSUANT TO

18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Quarterly Report on Form 10-Q of Spirit of Texas Bancshares, Inc. (the “Company”) for the quarter ended March 31, 2021 (the “Report”), as filed with the Securities and Exchange Commission on the date hereof, I certify, pursuant to 18 U.S.C. § 1350, as adopted pursuant to § 906 of the Sarbanes-Oxley Act of 2002, that to the best of my knowledge:

(1) The Report fully complies with the requirements of section 13(a) or 15(d) of the Securities Exchange Act of 1934, as amended; and

(2) The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

Date:     April 30, 2021	By:	/s/ Dean O. Bass
		Dean O. Bass
		Chairman and Chief Executive Officer