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 September 30, 2019 (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: November 8, 2019 | | By: | /s/ Dean O. Bass |
| | | Dean O. Bass |
| | | Chairman and Chief Executive Officer |