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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

\n \n \n \n \n \n

Date of Report (Date of earliest event reported): October 21, 2026

THIRD COAST BANCSHARES, INC.

(Exact name of Registrant as Specified in Its Charter)

\n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n

\n	\n	\n	\n	\n
Texas	001-41028	46-2135597
(State or Other Jurisdiction of Incorporation)	(Commission File Number)	(IRS Employer Identification No.)

20202 Highway 59 North Suite 190
Humble, Texas		77338
(Address of Principal Executive Offices)		(Zip Code)

\n \n \n \n \n \n

Registrant’s Telephone Number, Including Area Code: 281 446-7000

\n \n \n \n \n \n

Not Applicable

(Former Name or Former Address, if Changed Since Last Report)

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:

\n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n

\n	\n
☒	Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)
☐	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 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:

\n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n

Title of each class

Trading
Symbol(s)

Name of each exchange on which registered

Common stock, par value $1.00 per share

TCBX

New York Stock Exchange

NYSE Texas

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§ 230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§ 240.12b-2 of this chapter).

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 2.02 Results of Operations and Financial Condition.

On October 21, 2026, Third Coast Bancshares, Inc. (the “Company”) issued a press release announcing its financial results for the quarter ended September 30, 2026. A copy of the Company’s press release is furnished as Exhibit 99.1 to this Current Report on Form 8-K.

In accordance with General Instruction B.2 of Form 8-K, the information in Item 2.02 of this Current Report on Form 8-K, including Exhibit 99.1, shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or otherwise subject to the liabilities of that section. The information in Item 2.02 of this Current Report on Form 8-K, including Exhibit 99.1, shall not be incorporated by reference into any filing or other document pursuant to the Securities Act of 1933, as amended (the “Securities Act”), or the Exchange Act, except as shall be expressly set forth by specific reference in such filing or document.

Item 7.01 Regulation FD Disclosure.

The Company intends to hold an investor call and webcast to discuss its financial results for the quarter ended September 30, 2026, on Thursday, October 22, 2026, at 10:00 a.m. Central Time. The Company’s presentation to analysts and investors contains additional information about the Company’s financial results for the quarter ended September 30, 2026, and is furnished as Exhibit 99.2 to this Current Report on Form 8-K.

In accordance with General Instruction B.2 of Form 8-K, the information in Item 7.01 of this Current Report on Form 8-K, including Exhibit 99.2, shall not be deemed “filed” for purposes of Section 18 of the Exchange Act, or otherwise subject to the liabilities of that section. The information in Item 7.01 of this Current Report on Form 8-K, including Exhibit 99.2, shall not be incorporated by reference into any filing or other document pursuant to the Securities Act or the Exchange Act, except as shall be expressly set forth by specific reference in such filing or document.

Item 9.01 Financial Statements and Exhibits.

(d) Exhibits.

\n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n

\n	\n	\n
Exhibit Number		Description of Exhibit

99.1		Press Release dated October 21, 2026

99.2		Investor Presentation

104		Cover Page Interactive Data File (embedded within the 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.

\n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n

\n	\n	\n	\n
			THIRD COAST BANCSHARES, INC.

Date:	October 21, 2026	By:	/s/ R. John McWhorter
			R. John McWhorter Chief Financial Officer

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