Item 7.01 Regulation FD Disclosure. Third Coast Bancshares, Inc., a Texas corporation (“Third Coast”), and Great Plains Bancshares, Inc., an Oklahoma corporation (“Great Plains”), issued a joint press release on October 7, 2026 announcing the execution of the Merger Agreement (as defined below). A copy of the press release is furnished as Exhibit 99.1 and incorporated herein by reference.…
Filed Oct 7, 2026Accepted Oct 7, 2026, 6:45 AM EDTCIK 1781730Accession 0001193125-26-416163
Third Coast Bancshares, Inc. is a commercially focused, Texas-based bank holding company operating primarily in the Greater Houston, Dallas-Fort Worth, and Austin-San Antonio markets through its wholly owned subsidiary, Third Coast Bank. Founded in 2008 in Humble, Texas, Third Coast Bank conducts banking operations through 20 branches encompassing the four largest metropolitan areas in Texas. Please visit www.thirdcoast.bank for more information.
Select an item to read the extracted section. The as-filed document remains the primary evidence.
Item 7.01Item 7.01 - Regulation FD Disclosure
Item 7.01 Regulation FD Disclosure.
Third Coast Bancshares, Inc., a Texas corporation (“Third Coast”), and Great Plains Bancshares, Inc., an Oklahoma corporation (“Great Plains”), issued a joint press release on October 7, 2026 announcing the execution of the Merger Agreement (as defined below). A copy of the press release is furnished as Exhibit 99.1 and incorporated herein by reference. Third Coast also intends to provide supplemental information regarding the transactions disclosed under Item 8.01 of this Current Report on Form 8-K in connection with presentations to analysts and investors. The slides that will be made available in connection with the presentations are furnished as Exhibit 99.2 and are incorporated herein by reference.
In connection with the announcement of the Merger Agreement, Third Coast sent a written communication to employees of Third Coast Bank, which is furnished as Exhibit 99.3 and incorporated herein by reference, and Great Plains sent a written communication to employees of Great Plains National Bank, which is furnished as Exhibit 99.4 and incorporated herein by reference.
As provided in General Instruction B.2 to Form 8-K, the information furnished in Item 7.01 and Exhibits 99.1, 99.2, 99.3, and 99.4 of this Current Report on Form 8-K 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, and such information shall not be deemed incorporated by reference in any filing under 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.
Item 8.01Item 8.01 - Other Events
Item 8.01 Other Events.
On October 6, 2026, Third Coast entered into an Agreement and Plan of Reorganization (the “Merger Agreement”), by and among Third Coast, Thunder Merger Sub, Inc., a Texas corporation and a wholly owned subsidiary of Third Coast (“Merger Sub”), and Great Plains, pursuant to which, upon the terms and subject to the conditions set forth therein, (i) Merger Sub will merge with and into Great Plains (the “Merger”), with Great Plains surviving as a wholly owned subsidiary of Third Coast, (ii) immediately following, and in connection with, the Merger, Great Plains will be merged with and into Third Coast, with Third Coast surviving the merger (the “Second Step Merger”), and (iii) immediately following the Second Step Merger, or at such later time as Third Coast may determine, Great Plains National Bank, a national banking association and a wholly owned subsidiary of Great Plains, will merge with and into Third Coast Bank, a Texas banking association and a wholly owned subsidiary of Third Coast, with Third Coast Bank surviving the merger.
Filed exhibits (2)
EX-99.1 (by filename) d146780dex991.htm
Exhibit 99.1
JOINT NEWS RELEASE
Third Coast Bancshares, Inc. and Great Plains Bancshares, Inc. Announce Definitive Merger Agreement
Once Completed, Combined Total Assets to Exceed $9 Billion
HOUSTON, TX and OKLAHOMA CITY, OK - October 7, 2026 - Third Coast Bancshares, Inc. (“Third Coast”)
(NYSE & NYSE Texas: TCBX), the parent company of Third Coast Bank, and Great Plains Bancshares, Inc. (“Great Plains”), the parent company of Great Plains National Bank, today jointly announced the signing of a definitive merger
agreement pursuant to which Third Coast will acquire Great Plains in an all-stock transaction valued at approximately $239.6 million based on Third Coast’s closing stock price as of October 6,
2026. On a pro forma basis, the combined company is expected to have approximately $9 billion in assets following the completion of the transaction.
The strategic partnership creates an opportunity to combine two culturally aligned, relationship-driven community banks, expand Third Coast’s Dallas
presence and establish Third Coast’s entry into the Oklahoma market. Great Plains, headquartered in Oklahoma City, Oklahoma, has served its markets for more than 100 years and operates…
Exhibit 99.2 Strategic Partnership with Great Plains Bancshares, Inc.
Third Coast Bancshares, Inc. Investor Presentation th October 7, 2026
TITLES: Century Gothic BODY: Aptos DISCLAIMER CASING: Title Case
FORWARD-LOOKING STATEMENTS WHITE This presentation contains forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995 that are subject to risks and uncertainties and are made pursuant to the safe harbor
255, 255, 255 provisions of Section 27A of the Securities Act of 1933, as amended (the “Securities Act”), and Section 21E of the Securities Exchange Act of 1934, as amended. These forward-looking statements reflect the current views of
Third Coast Bancshares, Inc. (the “Company,” “Third Coast,” “TCBX,” “we,” “us,” or “our”) with respect to, among other things, future events and our financial performance and
include, but are not limited to, the expected completion date, financial benefits and other effects of the proposed transaction. These statements are often, but not always, made through the use of words or phrases such as “may,”
“should,” “could,” BODY TEXT “predict,” “potential,” “believe,” “looking ahead,” “will likely result,” “exp…