Third Coast Bancshares agrees to Great Plains merger

Great Plains shareholders who own approximately 27.6% of its outstanding stock agreed to support the transaction, while both companies’ shareholders must approve specified steps.

Rhea-AI Filing Summary

Third Coast Bancshares, Inc. (TCBX) agreed to a two-step merger with Great Plains Bancshares, Inc., subject to closing conditions. TCBX subsidiary Thunder Merger Sub will merge into Great Plains, then Great Plains into TCBX. Each outstanding Great Plains share would convert into TCBX common stock under a formula using 5,570,352 shares divided by Great Plains shares outstanding immediately before the first merger’s effective time, rounded to the nearest ten thousandth of a share. The exchange ratio may be reduced if Great Plains does not deliver at least $153,300,000 in the specified capital, surplus and retained-earnings measure less intangible assets, with specified adjustments.

Great Plains National Bank is to merge into Third Coast Bank immediately after the second merger or later as TCBX determines. Closing requires shareholder approvals, regulatory and other consents, an effective Form S-4 and other conditions. Great Plains shareholders party to a voting agreement, beneficially owning approximately 27.6% of its outstanding stock, agreed to vote for the transaction and against alternatives. Great Plains may owe an $11,981,827 termination fee in specified circumstances.

Filing Explained

Closing would add a bank-level consolidation and require TCBX or its bank to pay specified Great Plains compensation-plan participants within ten business days.

If completed, the agreement also calls for Great Plains National Bank to merge into Third Coast Bank, which would survive.

Great Plains’ phantom-stock and salary-continuation agreements are to end in connection with closing; TCBX or Third Coast Bank must pay participants in connection with closing or termination, no later than ten business days after closing.

At or promptly after the merger takes effect, TCBX and Third Coast Bank each add two directors, including Todd Taylor and Paul M. Dickinson or other current Great Plains directors mutually agreed by the parties.

The voting agreement generally bars its signatory Great Plains shareholders from transferring their shares until it ends, either when the merger agreement terminates or 24 months after closing, whichever comes first.

8-K Event Classification

2 items: 1.01, 9.01

2 items

Item 1.01 Entry into a Material Definitive Agreement Business

The company signed a significant contract such as a merger agreement, credit facility, or major partnership.

Item 9.01 Financial Statements and Exhibits Exhibits

Financial statements, pro forma financial information, or exhibit attachments filed with this report.

Key Figures

Exchange-ratio numerator: 5,570,352 shares Minimum capital measure: $153,300,000 Great Plains shares under voting agreement: Approximately 27.6% +3 more

6 metrics

Exchange-ratio numerator 5,570,352 shares Used in the formula for TCBX shares per Great Plains share

Minimum capital measure $153,300,000 Capital, surplus and retained earnings less intangible assets, subject to specified adjustments

Great Plains shares under voting agreement Approximately 27.6% Percentage of outstanding Great Plains stock beneficially owned by participating shareholders

Termination fee $11,981,827 Payable by Great Plains in certain termination circumstances

Voting agreement term 24 months After the merger closing date, unless the merger agreement terminates earlier

Agreement termination date September 30, 2027 Date by which closing conditions must be satisfied or waived for this termination right

Key Terms

Exchange Ratio, Effective Time, fractional share, reorganization

4 terms

Exchange Ratio financial

"equal to the quotient of (A) 5,570,352, divided by (B)"

The exchange ratio is the number used to decide how many shares of one company you get for each share you own in another company during a merger or acquisition. It’s like a recipe that tells you how to swap shares fairly, ensuring both companies’ values are balanced. This ratio matters because it determines how ownership divides between the companies' shareholders.

Effective Time technical

"at the effective time of the Merger (the “Effective Time”)"

The exact clock time when a regulatory filing, approval, or corporate action formally becomes legally active; from that moment the change is binding and can be acted on. Investors care because the effective time marks when ownership, rights, trading rules, or new securities take effect — like a light switch turning on a contract or transaction — which determines when risks, benefits and market reactions begin.

fractional share financial

"In lieu of any fractional share"

A fractional share is a portion of a single stock that is worth less than one full share, like owning a slice of a pizza instead of the whole pie. It lets investors buy and hold part of expensive stocks or spread small amounts of money across many companies, which helps with diversification and regular investing; dividends and price changes affect fractional shares proportionally, though some rights and trading rules can vary by provider.

reorganization regulatory

"qualifies as a “reorganization” within the meaning of Section 368(a)"

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What stock consideration would Great Plains shareholders receive in the TCBX merger?

Each outstanding Great Plains common share would convert into a right to receive TCBX common stock based on 5,570,352 divided by the number of Great Plains shares outstanding immediately before the effective time. The calculation is rounded to the nearest ten thousandth of a share; fractional shares are paid in cash, without interest.

What approvals does the TCBX merger with Great Plains require?

Great Plains shareholders must approve the agreement and merger, and TCBX shareholders must approve the share issuance. Closing also requires regulatory and other third-party consents, an effective Form S-4, authorization to list the TCBX shares on the New York Stock Exchange, and other conditions.

How many Great Plains shareholders agreed to support the TCBX merger?

Shareholders party to the voting agreement beneficially own approximately 27.6% of Great Plains stock. They agreed to vote their shares for the merger and against alternative transactions, and generally may not transfer their shares before the agreement ends.

How much is the Great Plains merger termination fee?

The termination fee payable by Great Plains is $11,981,827 in certain circumstances. Those circumstances include specified situations involving alternative acquisition proposals or a change in the Great Plains board’s recommendation.

What is the outside date for the TCBX and Great Plains merger agreement?

Either party may terminate the agreement if the conditions to its obligation to close have not been satisfied or waived by September 30, 2027, subject to the agreement’s terms.

AI-generated analysis. How Rhea-AI works. Not financial advice.

Understanding 8-K Material Events →

See more from StockTitan in Google Search and AI answers. Adds StockTitan as a preferred source · opens Google

Add on Google Not now

Available on EDGAR 10/13/2026 - 04:30 PM EDT Accepted by SEC EDGAR 10/13/2026 - 04:30 PM EDT Learn about SEC filing dates

false 0001781730 0001781730 2026-10-06 2026-10-06

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

Date of Report (Date of earliest event reported): October 6, 2026

THIRD COAST BANCSHARES, INC.

(Exact name of Registrant as Specified in Its Charter)

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)

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

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:

☒ 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:

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
				(Indicate by check mark)
				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 1.01 Entry into a Material Definitive Agreement.

Agreement and Plan of Reorganization

On October 6, 2026, Third Coast Bancshares, Inc. (the “Company” or “Third Coast”), a Texas corporation and the parent company of Third Coast Bank, a Texas banking association, entered into an Agreement and Plan of Reorganization (the “Agreement”), by and among the Company, Thunder Merger Sub, Inc. (“Merger Sub”), an Oklahoma corporation and a wholly owned subsidiary of the Company, and Great Plains Bancshares, Inc. (“Great Plains”), an Oklahoma corporation and the parent company of Great Plains National Bank, a national banking association with its principal office in Elk City, Oklahoma (“Great Plains Bank”).

Subject to the terms and conditions set forth in the Agreement, Merger Sub will merge with and into Great Plains (the “Merger”), with Great Plains surviving as a wholly owned subsidiary of the Company. Immediately following, and in connection with, the Merger, the Company will cause Great Plains to be merged with and into the Company, with the Company surviving the merger (the “Second Step Merger” and together with the Merger, the “Integrated Mergers”). Immediately following the Second Step Merger, or at such later time as the Company may determine, the Company will cause Great Plains Bank to be merged with and into Third Coast Bank, with Third Coast Bank surviving the merger.

Subject to the terms and conditions set forth in the Agreement, at the effective time of the Merger (the “Effective Time”), each outstanding share of common stock, par value $1.00 per share, of Great Plains (“Great Plains Stock”), will be converted into the right to receive, without interest, a number of shares of common stock, par value $1.00 per share, of the Company (“TCBX Common Stock”), rounded to the nearest ten thousandth of a share, equal to the quotient of (A) 5,570,352, divided by (B) the number of shares of Great Plains Stock issued and outstanding immediately prior to the Effective Time, except for cancelled shares and dissenting shares (the “Exchange Ratio”). The Exchange Ratio is subject to reduction in the event that Great Plains does not deliver a minimum of $153,300,000 of the sum of Great Plains’ capital, surplus and retained earnings accounts less all intangible assets, calculated as of the Calculation Time (as defined in the Agreement) and in accordance with generally accepted accounting principles of the United States consistently applied, and adjusted to reflect certain merger costs and other specified items described in the Agreement. The Company will not issue any certificates representing a fractional share of TCBX Common Stock. In lieu of any fractional share, each holder of Great Plains Stock entitled to a fractional share, upon surrender of such shares of Great Plains Stock, will be entitled to receive from TCBX an amount in cash, without interest, as described in the Agreement.

Pursuant to the terms of the Agreement, Great Plains will cause its phantom stock agreements and salary continuation agreements to be terminated in connection with the closing of the Merger, and the Company or Third Coast Bank will pay all payments to participants under such agreements in connection with the closing of the Merger or such termination no later than ten business days following the closing date.

The Agreement contains customary representations and warranties from both the Company and Great Plains, and each party has agreed to customary covenants, including, among others, covenants relating to the conduct of its business during the interim period between the execution of the Agreement and the closing of the Merger, Great Plains’ obligation to recommend that its shareholders approve and adopt the Agreement, the Merger and the transactions contemplated thereby, the Company’s obligation to recommend that its shareholders approve the issuance of shares of TCBX Common Stock in connection with the Merger (the “TCBX Share Issuance”), and Great Plains’ non-solicitation obligations relating to alternative acquisition proposals.

Pursuant to the terms of the Agreement, at or promptly following the Effective Time, each of the Company and Third Coast Bank will increase by two the number of directors constituting its board of directors and appoint Todd Taylor and Paul M. Dickinson, or such other current members of the Great Plains board of directors as mutually agreed by the Company and Great Plains, to its board of directors.

Completion of the Merger is subject to certain customary conditions, including, among others, (i) subject to certain exceptions, the accuracy of the representations and warranties of each party, (ii) performance in all material respects by each party of its obligations under the Agreement, (iii) the delivery of required closing documents, (iv) approval

of the Agreement and the Merger by Great Plains’ shareholders and approval of the TCBX Share Issuance by the Company’s shareholders; (v) receipt of required regulatory and other third-party consents or approvals, (vi) the absence of any statute, rule, regulation, order, injunction or other action prohibiting the consummation of the Merger, (vii) the Registration Statement on Form S-4 becoming effective under the Securities Act of 1933, as amended (the “Securities Act”), (viii) authorization for listing on the New York Stock Exchange of the shares of TCBX Common Stock to be issued in the Merger, and (ix) each party’s receipt of an opinion from its counsel to the effect that the Integrated Mergers will together be treated as an integrated transaction that qualifies as a “reorganization” within the meaning of Section 368(a) of the Internal Revenue Code of 1986, as amended.

The Agreement provides certain termination rights for both the Company and Great Plains. The Agreement provides that either the Company or Great Plains may terminate the Agreement if, subject to the terms of the Agreement, (i) mutual written consent is given by both parties, (ii) the conditions to the party’s obligations to close the Merger have not been satisfied or waived by September 30, 2027, (iii) the transactions contemplated by the Agreement are disapproved by any regulatory agency whose approval is required, (iv) there has been any material adverse change with respect to the other party, (iv) the other party has breached its respective covenants or agreements or any of the representations or warranties set forth in the Agreement, or (v) the other party enters into any formal or informal administrative action with a governmental entity or any such action is threatened. The Agreement also provides that a termination fee of $11,981,827 will be payable by Great Plains in the event of a termination of the Agreement under certain circumstances, including circumstances involving alternative acquisition proposals or changes in the recommendation of Great Plains’ board of directors.

The foregoing description of the Agreement does not purport to be complete and is qualified in its entirety by reference to the full text of the Agreement, which is attached hereto as Exhibit 2.1 and is incorporated herein by reference.

The representations, warranties and covenants of each party set forth in the Agreement have been made only for purposes of, and were and are solely for the benefit of the parties to, the Agreement, may be subject to limitations agreed upon by the contracting parties, including being qualified by confidential disclosures made for the purposes of allocating contractual risk between the parties to the Agreement instead of establishing these matters as facts, and may be subject to standards of materiality applicable to the contracting parties that differ from those applicable to investors. Accordingly, the representations and warranties may not describe the actual state of affairs at the date they were made or at any other time, and investors should not rely on them as statements of fact. In addition, such representations and warranties (1) will not survive consummation of the Merger, unless otherwise specified therein, and (2) were made only as of the date of the Agreement or such other date as is specified in the Agreement. Moreover, information concerning the subject matter of the representations, warranties and covenants may change after the date of the Agreement, which subsequent information may or may not be fully reflected in the parties’ public disclosures. Accordingly, the Agreement is included with this filing only to provide investors with information regarding the terms of the Agreement, and not to provide investors with any other factual information regarding the Company or Great Plains, their respective affiliates or their respective businesses. The Agreement should not be read alone, but should instead be read in conjunction with the other information regarding the Company, Great Plains, their respective affiliates or their respective businesses, the Agreement and the Merger as well as the information in the Form 10-K, Forms 10-Q, Forms 8-K and other filings that the Company makes with the Securities and Exchange Commission (the “SEC”).

Great Plains Voting Agreement.

In connection with entering into the Agreement, the Company entered into a Voting Agreement with Great Plains, Bart O. Caraway, as proxy, and certain shareholders of Great Plains (the “Great Plains Voting Agreement”). The shareholders that are party to the Great Plains Voting Agreement beneficially own in the aggregate approximately 27.6% of the outstanding Great Plains Stock. The Great Plains Voting Agreement requires, among other things, that the shareholders party thereto vote all of their shares of Great Plains Stock in favor of approval of the Merger, the Agreement and any other transactions contemplated by the Agreement and against alternative transactions and generally prohibits them from transferring their shares of Great Plains Stock prior to the termination of the Great Plains Voting Agreement. The Great Plains Voting Agreement will terminate upon the earlier to occur of (a) the date the Agreement is terminated pursuant to Section 9.01 of the Agreement or (b) the date that is 24 months after the closing date of the Merger.

The foregoing description of the Great Plains Voting Agreement does not purport to be complete and is qualified in its entirety by reference to the form of the Great Plains Voting Agreement, which is attached hereto as Exhibit 10.1 and incorporated by reference herein.

Great Plains Support Agreement.

In connection with entering into the Agreement, the directors of Great Plains and Great Plains Bank have entered into a Director Support Agreement with the Company (the “Great Plains Director Support Agreement”) pursuant to which they agreed to support the transaction and to certain additional restrictive covenants.

The foregoing description of the Great Plains Director Support Agreement does not purport to be complete and is qualified in its entirety by reference to the form of the Great Plains Director Support Agreement, which is attached hereto as Exhibit 10.2 and incorporated by reference herein.

Item 9.01 Financial Statements and Exhibits.

(d) Exhibits.

Exhibit Number		Description of Exhibit
2.1		Agreement and Plan of Reorganization, dated as of October 6, 2026, by and among Third Coast Bancshares, Inc., Thunder Merger Sub, Inc., and Great Plains Bancshares, Inc.*
10.1		Form of Great Plains Voting Agreement
10.2		Form of Great Plains Director Support Agreement
104		Cover Page Interactive Data File (embedded within the Inline XBRL document)

* Schedules (or similar attachments) have been omitted pursuant to Item 601(a)(5) of Regulation S-K. A copy of any omitted schedule (or similar attachment) will be furnished supplementally to the SEC upon request; provided, however, that the parties may request confidential treatment pursuant to Rule 24b-2 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), for any document so furnished.

Forward-Looking Statements

This communication 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 provisions of Section 27A of the Securities Act and Section 21E of the Exchange Act. These forward-looking statements reflect Third Coast’s current views with respect to, among other things, future events and Third Coast’s 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,” “predict,” “potential,” “believe,” “looking ahead,” “will likely result,” “expect,” “continue,” “will,” “anticipate,” “seek,” “estimate,” “intend,” “plan,” “projection,” “would” and “outlook,” or the negative version of those words or other comparable words or phrases of a future or forward-looking nature. These forward-looking statements are not historical facts, and are based on current expectations, estimates and projections about Third Coast’s industry, management’s beliefs and certain assumptions made by management, many of which, by their nature, are inherently uncertain and beyond Third Coast’s control. Accordingly, Third Coast cautions you that any such forward-looking statements are not guarantees of future performance and are subject to risks, assumptions and uncertainties that are difficult to predict. Although Third Coast believes that the expectations reflected in these forward-looking statements are reasonable as of the date made, actual results may prove to be materially different from the results expressed or implied by the forward-looking statements. There are or will be important factors that could cause Third Coast’s actual results to differ materially from those indicated in these forward-looking statements, including, but not limited to, the following: (1) the occurrence of any event, change or other circumstance that could give rise to the right of one or both of the

parties to terminate the definitive merger agreement providing for the acquisition of Great Plains by Third Coast; (2) the outcome of any legal proceedings that may be instituted against Third Coast or Great Plains; (3) the possibility that the transaction does not close when expected or at all because required regulatory, shareholder or other approvals and other conditions to closing are not received or satisfied on a timely basis or at all (and the risk that such approvals may result in the imposition of conditions that could adversely affect the combined company or the expected benefits of the transaction); (4) the risk that the benefits from the transaction may not be fully realized or may take longer to realize than expected, including as a result of changes in, or problems arising from, general economic and market conditions, interest and exchange rates, monetary policy, laws and regulations and their enforcement, and the degree of competition in the geographic and business areas in which Third Coast and Great Plains operate; (5) disruption to the parties’ businesses as a result of the announcement and pendency of the transaction; (6) the risk that the integration of each party’s operations will be materially delayed or will be more costly or difficult than expected or that the parties are otherwise unable to successfully integrate each party’s businesses into the other’s businesses; (7) the possibility that the transaction may be more expensive to complete than anticipated, including as a result of unexpected factors or events; (8) reputational risk and potential adverse reactions of Third Coast’s or Great Plains’ customers, suppliers, employees or other business partners, including those resulting from the announcement or completion of the transaction; (9) the dilution caused by Third Coast’s issuance of additional shares of its common stock in connection with the transaction; (10) a material adverse change in the financial condition of Third Coast or Great Plains; (11) general competitive, economic, political and market conditions; (12) major catastrophes such as earthquakes, floods or other natural or human disasters, including infectious disease outbreaks; (13) the diversion of management’s attention and time from ongoing business operations and opportunities on merger-related matters; and (14) other factors that may affect future results of Third Coast and Great Plains including changes in asset quality and credit risk, the inability to sustain revenue and earnings growth, changes in interest rates and capital markets, inflation, customer borrowing, repayment, investment and deposit practices, the impact, extent and timing of technological changes, capital management activities and other actions of the Board of Governors of the Federal Reserve System and legislative and regulatory actions and reforms. For a discussion of additional factors that could cause Third Coast’s actual results to differ materially from those described in the forward-looking statements, please see the risk factors discussed in Third Coast’s Annual Report on Form 10-K for the year ended December 31, 2025 filed with the SEC, and Third Coast’s other filings with the SEC.

The foregoing factors should not be construed as exhaustive and should be read together with the other cautionary statements included in this communication. If one or more events related to these or other risks or uncertainties materialize, or if Third Coast’s underlying assumptions prove to be incorrect, actual results may differ materially from what Third Coast anticipates. Accordingly, you should not place undue reliance on any such forward-looking statements. Any forward-looking statement speaks only as of the date on which it is made, and Third Coast does not undertake any obligation to publicly update or review any forward-looking statement, whether as a result of new information, future developments or otherwise. New factors emerge from time to time, and it is not possible for Third Coast to predict which will arise. In addition, Third Coast cannot assess the impact of each factor on its business or the extent to which any factor, or combination of factors, may cause actual results to differ materially from those contained in any forward-looking statements.

No Offer or Solicitation

This communication is being made in respect of the proposed merger transaction involving Third Coast and Great Plains. This communication does not constitute an offer to sell or the solicitation of an offer to buy any securities or the solicitation of any vote or approval, nor shall there be any sale of securities in any jurisdiction in which such offer, solicitation or sale would be unlawful prior to registration or qualification under the securities laws of any such jurisdiction. No offer of securities shall be made except by means of a prospectus meeting the requirements of Section 10 of the Securities Act and otherwise in accordance with applicable law.

Important Additional Information and Where to Find It

Third Coast intends to file a registration statement on Form S-4 with the SEC, which will include a joint proxy statement of Great Plains and Third Coast that also constitutes a prospectus of Third Coast, and Third Coast will file other documents regarding the proposed transaction with the SEC. A definitive joint proxy statement/prospectus will also be sent to Great Plains’ and Third Coast’s shareholders seeking the required shareholder approvals of the proposed transaction.

INVESTORS AND SECURITY HOLDERS ARE URGED TO READ THE REGISTRATION STATEMENT ON FORM S-4 AND THE JOINT PROXY STATEMENT/PROSPECTUS INCLUDED WITHIN THE REGISTRATION STATEMENT ON FORM S-4 WHEN THEY BECOME AVAILABLE, AS WELL AS ANY OTHER RELEVANT DOCUMENTS FILED WITH THE SEC IN CONNECTION WITH THE TRANSACTION OR INCORPORATED BY REFERENCE INTO THE REGISTRATION STATEMENT ON FORM S-4 AND THE JOINT PROXY STATEMENT/PROSPECTUS, BECAUSE THEY WILL CONTAIN IMPORTANT INFORMATION REGARDING THIRD COAST, GREAT PLAINS, THE TRANSACTION AND RELATED MATTERS.

The documents filed by Third Coast with the SEC may be obtained free of charge at the SEC’s website at www.sec.gov. In addition, the documents filed by Third Coast may be obtained free of charge at its website at https://ir.thirdcoast.bank/financials/sec-filings/. Alternatively, these documents, when available, can be obtained free of charge from Third Coast upon written request to Third Coast Bancshares, Inc., Attn: Investor Relations, 1800 West Loop South, Suite 875, Houston, TX 77027, or by calling (713) 960-1300.

Participants in this Transaction

Third Coast, Great Plains, their respective directors and executive officers and certain of their other members of management and employees may be deemed to be participants in the solicitation of proxies from Great Plains’ shareholders and Third Coast’s shareholders in connection with the proposed transaction. Information about the directors and executive officers of Third Coast may be found in Third Coast’s Annual Report on Form 10-K for the year ended December 31, 2025, as filed with the SEC on March 4, 2026 and in Third Coast’s proxy statement for its 2026 Annual Meeting of Shareholders, as filed with the SEC on April 16, 2026, copies of which can be obtained free of charge from Third Coast or from the SEC’s website as indicated above. To the extent the holdings of Third Coast’s securities by its directors and executive officers have changed since the amounts set forth in Third Coast’s proxy statement for its 2026 Annual Meeting of Shareholders, such changes have been or will be reflected on Statements of Changes in Beneficial Ownership of Securities on Form 4 filed with the SEC. Additional information regarding the interests of these participants and other persons who may be deemed participants in the transaction will be included in the joint proxy statement/prospectus and other relevant materials when filed with the SEC.

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.

				THIRD COAST BANCSHARES, INC.
Date: October 13, 2026				By:		/s/ R. John McWhorter
						R. John McWhorter Chief Financial Officer

Filing Exhibits & Attachments

6 documents

Agreements & Contracts

• EX-10.1 EX-10.1 42.3 KB
• EX-10.2 EX-10.2 32.2 KB

Other Documents

• EX-2.1 EX-2.1 531.2 KB
• EX-101 XBRL TAXONOMY EXTENSION SCHEMA 3.1 KB
• EX-101 XBRL TAXONOMY EXTENSION LABEL LINKBASE 18.3 KB
• EX-101 XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE 11.4 KB