Form 8-K

8-K — Third Coast Bancshares, Inc.

Accession: 0001193125-26-427892

Filed: 2026-10-21

Period: 2026-10-21

CIK: 0001781730

SIC: 6036 (SAVINGS INSTITUTIONS, NOT FEDERALLY CHARTERED)

Item: Results of Operations and Financial Condition

Item: Regulation FD Disclosure

Item: Financial Statements and Exhibits

Documents

8-K — tcbx-20261021.htm (Primary)

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8-K

8-K (Primary)

Filename: tcbx-20261021.htm · Sequence: 1

8-K

0001781730false00017817302026-10-212026-10-21

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 21, 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

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.

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.

THIRD COAST BANCSHARES, INC.

Date:

October 21, 2026

By:

/s/ R. John McWhorter

R. John McWhorter

Chief Financial Officer

EX-99.1

Filename: tcbx-ex99_1.htm · Sequence: 2

EX-99.1

Exhibit 99.1

News Release

Contact:

Ken Dennard / Natalie Hairston

Dennard Lascar Investor Relations

(713) 529-6600

TCBX@dennardlascar.com

FOR IMMEDIATE RELEASE

Third Coast Bancshares, Inc. Reports

2026 Third Quarter Financial Results

Solid 2026 Third Quarter Results While Advancing Long-Term Growth Strategy

HOUSTON, October 21, 2026 – Third Coast Bancshares, Inc. (NYSE and NYSE Texas: TCBX) (the “Company,” “Third Coast,” “we,” “us,” or “our”), the bank holding company for Third Coast Bank (the “Bank”), today reported its 2026 third quarter financial results.

2026 Third Quarter Financial and Operational Highlights

•

Return on average assets of 1.13% annualized for the third quarter of 2026 compared to 1.34% annualized for the second quarter of 2026 and 1.41% annualized for the third quarter of 2025. Return on average assets as adjusted (non-GAAP)(1) annualized for the third quarter of 2026 was 1.29%.

•

Net interest margin of 3.70% for the third quarter of 2026 compared to 3.83% for the second quarter of 2026 and 4.10% for the third quarter of 2025.

•

Net income for the third quarter of 2026 totaled $19.0 million, or $1.07 and $0.93 per basic and diluted share, respectively, compared to $22.0 million, or $1.25 and $1.08 per basic and diluted share, respectively, for the second quarter of 2026 and $18.1 million, or $1.22 and $1.03 per basic and diluted share, respectively, for the third quarter of 2025. Excluding $3.2 million of acquisition-related expenses in the third quarter of 2026, the net income as adjusted (non-GAAP)(1) for the third quarter of 2026 was $21.6 million, or $1.06 per diluted share as adjusted (non-GAAP)(1).

•

Efficiency ratio of 63.10% for the third quarter of 2026 compared to 56.51% for the second quarter of 2026 and 53.03% for the third quarter of 2025.

•

Gross loans grew to $5.49 billion as of September 30, 2026, from $5.44 billion reported as of June 30, 2026.

•

Book value per common share and tangible book value per common share(1) increased to $36.53 and $33.31, respectively, as of September 30, 2026, compared to $36.34 and $33.08, respectively, as of June 30, 2026 and $32.25 and $30.91, respectively, as of September 30, 2025.

•

Noninterest bearing demand deposits increased $78.4 million to $721.2 million, or 12.2% of total deposits as of September 30, 2026, compared to 11.0% of total deposits as of June 30, 2026.

•

On October 7, 2026, the Company announced a definitive merger agreement to acquire Great Plains Bancshares, Inc. (“Great Plains”), the parent company of Great Plains National Bank, in an all-stock transaction valued at approximately $239.6 million based on the Company's closing stock price as of October 6, 2026. The transaction is expected to close in the first quarter of 2027.

____________________________

(1) Non-GAAP financial measure. Please refer to the table titled “GAAP Reconciliation and Management's Explanation of Non-GAAP Financial Measures” at the end of this news release for a reconciliation of these non-GAAP financial measures.

“The third quarter reflects the underlying strength of our franchise and our continued focus on disciplined, relationship-driven growth,” said Bart Caraway, Founder, Chairman, President, and Chief Executive Officer of Third Coast. “We saw healthy loan activity, continued progress in our funding base, stable credit performance, and another high in tangible book value per share. Additionally, our agreement to merge with Great Plains builds on the progress of our strategy and brings together two organizations with complementary strengths and shared values. We believe the transaction positions us to build an even stronger franchise capable of producing durable earnings and long-term stakeholder value.”

Operating Results

Net Income and Earnings Per Common Share

Net income totaled $19.0 million for the third quarter of 2026, compared to $22.0 million for the second quarter of 2026 and $18.1 million for the third quarter of 2025. Net income available to common shareholders totaled $17.8 million for the third quarter of 2026, compared to $20.8 million for the second quarter of 2026 and $16.9 million for the third quarter of 2025. The quarter-over-quarter decrease from the second quarter of 2026 was primarily due to the reduction of gain on sale of factored receivables from the second quarter of 2026 and an increase in merger and acquisition-related expenses during the third quarter of 2026. Dividends on our Series A Convertible Non-Cumulative Preferred Stock (“Series A Preferred Stock”) totaled $1.2 million for each of the quarters ended September 30, 2026, June 30, 2026 and September 30, 2025.

Basic and diluted earnings per common share were $1.07 per share and $0.93 per share, respectively, in the third quarter of 2026, compared to $1.25 per share and $1.08 per share, respectively, in the second quarter of 2026 and $1.22 per share and $1.03 per share, respectively, in the third quarter of 2025. In the third quarter of 2026, diluted earnings per common share as adjusted (non-GAAP)(1) was $1.06, compared to $0.98 diluted earnings per common share as adjusted (non-GAAP)(1) in the second quarter of 2026.

Net Interest Margin and Net Interest Income

The net interest margin for the third quarter of 2026 was 3.70%, compared to 3.83% for the second quarter of 2026 and 4.10% for the third quarter of 2025. The yield on loans for the third quarter of 2026 was 6.95%, compared to 7.06% for the second quarter of 2026 and 7.79% for the third quarter of 2025. The cost of interest-bearing deposits for the third quarter of 2026 was 3.49%, compared to 3.41% for the second quarter of 2026 and 3.98% for the third quarter of 2025.

Net interest income totaled $59.5 million for the third quarter of 2026, a decrease of 1.2% from $60.3 million for the second quarter of 2026 and an increase of 17.1% from $50.8 million for the third quarter of 2025. Interest income totaled $106.7 million for the third quarter of 2026, an increase of 0.7% from $106.0 million for the second quarter of 2026 and an increase of 15.4% from $92.5 million for the third quarter of 2025. Interest expense was $47.2 million for the third quarter of 2026, an increase of $1.5 million, or 3.2%, from $45.7 million for the second quarter of 2026, and an increase of $5.5 million, or 13.3%, from $41.7 million for the third quarter of 2025.

Noninterest Income and Noninterest Expense

Noninterest income totaled $6.3 million for the third quarter of 2026, compared to $7.7 million for the second quarter of 2026 and $3.6 million for the third quarter of 2025. The quarter-over-quarter decrease from the second quarter of 2026 was primarily due to the reduction of gain on sale of factored receivables from the second quarter of 2026 partially offset by increased service charges and fees during the third quarter of 2026.

____________________________

Noninterest expense increased to $41.6 million for the third quarter of 2026, compared to $38.4 million for the second quarter of 2026 and $28.9 million for the third quarter of 2025. The quarter-over-quarter increase from the second quarter of 2026 was primarily due to merger and acquisition-related costs of $3.2 million. At September 30, 2026, the number of employees decreased to 499, compared to 504 at June 30, 2026.

The efficiency ratio was 63.10% for the third quarter of 2026, compared to 56.51% for the second quarter of 2026 and 53.03% for the third quarter of 2025.

Balance Sheet Highlights

Loan Portfolio and Composition

For the quarter ended September 30, 2026, gross loans increased to $5.49 billion, an increase of $57.1 million, or 1.1%, from $5.44 billion as of June 30, 2026, and an increase of $1.33 billion, or 31.9%, from $4.17 billion as of September 30, 2025. The Bank completed a securitization of $87.5 million of commercial real estate loans during the third quarter of 2026. Real estate loans accounted for the majority of the loan growth for the third quarter of 2026, with real estate loans increasing $67.1 million from the second quarter of 2026, partially offset by municipal and other loans decreasing $9.2 million from the second quarter of 2026.

Asset Quality

Nonperforming loans at September 30, 2026 were $29.0 million, compared to $27.1 million at June 30, 2026 and $21.7 million at September 30, 2025. The increase in nonperforming loans during the third quarter of 2026 was primarily due to $2.3 million in SBA loans placed on nonaccrual. As of September 30, 2026, the nonperforming loans to total loans ratio was 0.53%, compared to 0.50% as of June 30, 2026 and 0.52% as of September 30, 2025.

The provision for credit losses recorded for the third quarter of 2026 was $540,000, and the allowance for credit losses of $54.4 million represented 0.99% of the $5.49 billion in gross loans outstanding as of September 30, 2026. The provision for credit losses recorded for the second quarter of 2026 was $2.1 million, and the allowance for credit losses of $53.6 million represented 0.99% of the $5.44 billion in gross loans outstanding as of June 30, 2026.

The Company recorded net recoveries of $27,000 and $17,000 for the three months ended September 30, 2026 and September 30, 2025, respectively.

Deposits and Composition

Deposits totaled $5.92 billion as of September 30, 2026, an increase of 1.2% from $5.86 billion as of June 30, 2026, and an increase of 35.5% from $4.37 billion as of September 30, 2025. Noninterest-bearing demand deposits increased from $642.7 million as of June 30, 2026 to $721.2 million as of September 30, 2026 and represented 12.2% and 11.0% of total deposits as of September 30, 2026 and June 30, 2026, respectively. As of September 30, 2026, interest-bearing demand deposits decreased $141.1 million, or 3.3%, time deposits increased $126.1 million, or 14.6%, and savings accounts increased $5.9 million, or 21.1%, respectively, from June 30, 2026.

The average cost of deposits was 3.09% for the third quarter of 2026, representing a 4-basis point increase from the second quarter of 2026 and a 47-basis point decrease from the third quarter of 2025. The quarter-over-quarter increase was primarily due to the increase in rates paid on interest-bearing demand deposits.

Earnings Conference Call

Third Coast has scheduled a conference call to discuss its 2026 third quarter results, which will be broadcast live over the Internet, on Thursday, October 22, 2026, at 11:00 a.m. Eastern Time / 10:00 a.m. Central Time. To participate in the call, dial 201-389-0869 and ask for the Third Coast Bancshares, Inc. call at least 10 minutes prior to the start time, or access it live over the Internet at https://ir.thirdcoast.bank/events-and-presentations/events/. For those who cannot listen to the live call, a replay will be available through October 29, 2026, and may be accessed by dialing

201-612-7415 and using passcode 13757906#. Also, an archive of the webcast will be available shortly after the call at https://ir.thirdcoast.bank/events-and-presentations/events/ for 90 days.

About Third Coast Bancshares, Inc.

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 https://www.thirdcoast.bank for more information.

Forward Looking Statements

This press release 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 of 1933, as amended (the “Securities Act”), and Section 21E of the Securities Exchange Act of 1934, as amended. These forward-looking statements reflect our current views with respect to, among other things, future events and our financial performance. 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 our industry, management’s beliefs and certain assumptions made by management, many of which, by their nature, are inherently uncertain and beyond our control. Accordingly, we caution 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 we believe 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 our actual results to differ materially from those indicated in these forward-looking statements, including, but not limited to, the following: interest rate risk and fluctuations in interest rates; market conditions and economic trends generally and in the banking industry; our ability to maintain important deposit relationships; our ability to grow or maintain our deposit base; our ability to implement our expansion strategy; our ability to pay dividends on our Series A Preferred Stock; credit risk associated with our business; economic conditions affecting the real estate market; prepayment risks associated with commercial real estate loans; liquidity risks in the securitization market; operational risks related to the administration of securitized assets; changes in key management personnel; 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; the outcome of any legal proceedings that may be instituted against Third Coast or Great Plains; 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); 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; disruption to the parties’ businesses as a result of the announcement and pendency of the transaction; 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; the possibility that the transaction may be more expensive to complete than anticipated, including as a result of unexpected factors or events; 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; the dilution caused by Third Coast’s issuance of additional shares of its common stock in connection with the transaction; a material adverse change in the financial condition of

Third Coast or Great Plains; the diversion of management’s attention and time from ongoing business operations and opportunities on merger-related matters; and 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 our actual results to differ materially from those described in the forward-looking statements, please see the risk factors discussed in our Annual Report on Form 10-K for the year ended December 31, 2025 filed with the U.S. Securities and Exchange Commission (the “SEC”), and our 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 press release. If one or more events related to these or other risks or uncertainties materialize, or if our underlying assumptions prove to be incorrect, actual results may differ materially from what we anticipate. 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 we do 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 us to predict which will arise. In addition, we cannot assess the impact of each factor on our 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.

Non-GAAP Financial Measures

This press release contains certain non-GAAP financial measures, including Tangible Common Equity, Tangible Book Value Per Common Share, Tangible Common Equity to Tangible Assets, Return on Average Tangible Common Equity, Return on Average Assets as Adjusted (Non-GAAP), Return on Average Common Equity as Adjusted (Non-GAAP), Return on Average Tangible Common Equity as Adjusted (Non-GAAP), Net Income as Adjusted (Non-GAAP), and Diluted Earnings Per Common Share as Adjusted (Non-GAAP), which are supplemental measures that are not required by, or are not presented in accordance with GAAP. Please refer to the table titled “GAAP Reconciliation and Management’s Explanation of Non-GAAP Financial Measures” at the end of this press release for a reconciliation of these non-GAAP financial measures.

Third Coast Bancshares, Inc. and Subsidiary

Financial Highlights

(unaudited)

2026

2025

(Dollars in thousands)

September 30

June 30

March 31

December 31

September 30

ASSETS

Cash and cash equivalents:

Cash and due from banks

359,763

404,165

425,174

175,202

116,383

Federal funds sold

6,051

6,732

6,133

6,027

6,629

Total cash and cash equivalents

365,814

410,897

431,307

181,229

123,012

Interest bearing time deposits in other banks

276

273

270

267

265

Investment securities available-for-sale

461,524

405,251

435,846

383,192

376,719

Investment securities held to maturity

191,924

191,952

191,980

192,008

206,037

Loans held for investment

5,493,503

5,436,414

5,251,458

4,394,751

4,165,116

Less: allowance for credit losses

(54,418

)

(53,591

)

(51,455

)

(43,949

)

(42,563

)

Loans held for investment, net

5,439,085

5,382,823

5,200,003

4,350,802

4,122,553

Accrued interest receivable

32,083

30,306

31,385

29,236

29,537

Premises and equipment, net

40,645

40,178

40,558

24,789

24,718

Other real estate owned

26,999

27,321

8,388

Bank-owned life insurance

77,100

77,856

77,107

76,357

75,547

Non-marketable securities, at cost

24,860

23,538

21,759

16,424

26,157

Deferred tax asset, net

26,644

23,843

7,493

6,450

6,989

Derivative assets

5,307

2,594

2,350

2,544

2,803

Right-of-use assets - operating leases

16,833

16,953

17,615

17,066

17,677

Core deposit intangibles, net

7,655

8,081

8,516

646

686

Goodwill

46,079

46,367

18,034

Other assets

42,792

47,556

61,129

33,327

22,686

Total assets

6,805,620

6,735,501

6,582,073

5,340,759

5,061,808

LIABILITIES

Deposits:

Noninterest bearing

721,194

642,748

577,217

495,000

450,013

Interest bearing

5,203,574

5,212,718

5,137,860

4,131,888

3,922,728

Total deposits

5,924,768

5,855,466

5,715,077

4,626,888

4,372,741

Accrued interest payable

6,910

5,872

7,205

5,957

7,153

Derivative liabilities

10,368

4,289

3,517

3,142

3,521

Lease liability - operating leases

17,887

18,011

18,676

18,130

18,735

Other liabilities

27,260

39,647

48,177

36,775

32,040

Line of credit - Senior Debt

62,375

60,375

57,875

37,875

32,875

Note payable - Subordinated Debentures, net

81,120

81,068

81,016

80,965

80,913

Total liabilities

6,130,688

6,064,728

5,931,543

4,809,732

4,547,978

SHAREHOLDERS' EQUITY

Series A Convertible Non-Cumulative Preferred Stock

Series B Convertible Perpetual Preferred Stock

Common stock

16,742

16,718

16,641

13,970

13,958

Common stock - non-voting

Additional paid-in capital

431,086

429,931

428,815

323,929

323,491

Retained earnings

237,045

219,238

198,435

183,238

166,537

Accumulated other comprehensive (loss) income

(8,911

)

5,916

7,669

10,920

10,874

Treasury stock, at cost

(1,099

)

(1,099

)

(1,099

)

(1,099

)

(1,099

)

Total shareholders' equity

674,932

670,773

650,530

531,027

513,830

Total liabilities and shareholders' equity

6,805,620

6,735,501

6,582,073

5,340,759

5,061,808

Third Coast Bancshares, Inc. and Subsidiary

Financial Highlights

(unaudited)

Three Months Ended

Nine Months Ended

2026

2025

2026

2025

(Dollars in thousands, except per share data)

September 30

June 30

March 31

December 31

September 30

INTEREST INCOME:

Loans, including fees

94,593

94,584

85,893

81,368

82,054

275,070

234,847

Investment securities available-for-sale

7,020

6,482

6,107

6,464

6,289

19,609

17,487

Investment securities held-to-maturity

2,359

2,549

2,398

2,681

2,882

7,306

4,489

Federal funds sold and other

2,754

2,374

2,988

1,586

1,278

8,116

5,108

Total interest income

106,726

105,989

97,386

92,099

92,503

310,101

261,931

INTEREST EXPENSE:

Deposit accounts

44,709

43,384

41,484

37,530

39,030

129,577

112,791

FHLB advances and other borrowings

2,471

2,329

2,257

2,372

2,624

7,057

6,120

Total interest expense

47,180

45,713

43,741

39,902

41,654

136,634

118,911

Net interest income

59,546

60,276

53,645

52,197

50,849

173,467

143,020

Provision for credit losses

540

2,069

580

2,245

2,763

3,189

5,343

Net interest income after credit loss expense

59,006

58,207

53,065

49,952

48,086

170,278

137,677

NONINTEREST INCOME:

Service charges and fees

4,293

3,174

3,175

3,518

2,839

10,642

7,241

Earnings on bank-owned life insurance

797

748

750

811

786

2,295

2,206

Loss on sale of investment securities available-for-sale

(93

)

(11

)

(272

)

(104

)

(338

)

Gain on sale of factored receivables

3,463

Gain on sale of SBA loans

Other

1,231

425

119

204

1,775

209

Total noninterest income

6,321

7,717

4,033

4,261

3,635

18,071

9,392

NONINTEREST EXPENSE:

Salaries and employee benefits

24,981

24,804

24,808

21,109

19,560

74,593

56,080

Occupancy and equipment expense

3,414

3,259

3,349

2,845

2,861

10,022

8,478

Legal and professional

4,869

2,271

3,221

2,850

1,254

10,361

4,612

Data processing and network expense

1,578

1,595

1,414

1,087

1,203

4,587

3,485

Regulatory assessments

1,430

1,331

1,210

1,172

1,152

3,971

3,661

Advertising and marketing

799

737

639

733

499

2,175

1,411

Software purchases and maintenance

1,573

1,421

1,419

1,067

1,094

4,413

3,502

Loan operations and other real estate owned expense

1,018

656

537

397

2,211

737

Telephone and communications

166

158

144

126

134

468

424

Other

1,733

2,192

1,362

1,305

1,106

5,287

3,456

Total noninterest expense

41,561

38,424

38,103

32,691

28,892

118,088

85,846

NET INCOME BEFORE INCOME TAX

EXPENSE

23,766

27,500

18,995

21,522

22,829

70,261

61,223

Income tax expense

4,762

5,513

2,627

3,624

4,772

12,902

12,830

NET INCOME

19,004

21,987

16,368

17,898

18,057

57,359

48,393

Preferred stock dividends declared

1,197

1,184

1,171

1,197

3,552

3,553

NET INCOME AVAILABLE TO COMMON

SHAREHOLDERS

17,807

20,803

15,197

16,701

16,860

53,807

44,840

EARNINGS PER COMMON SHARE:

Basic earnings per share

1.07

1.25

1.03

1.21

1.22

3.36

3.24

Diluted earnings per share

0.93

1.08

0.88

1.02

1.03

2.90

2.77

Third Coast Bancshares, Inc. and Subsidiary

Financial Highlights

(unaudited)

Three Months Ended

Nine Months Ended

2026

2025

2026

2025

(Dollars in thousands, except share and per share data)

September 30

June 30

March 31

December 31

September 30

Earnings per common share, basic

1.07

1.25

1.03

1.21

1.22

3.36

3.24

Earnings per common share, diluted

0.93

1.08

0.88

1.02

1.03

2.90

2.77

Dividends on common stock

Dividends on Series A Convertible

Non-Cumulative Preferred Stock

17.25

17.06

16.88

17.25

51.19

Return on average assets (A)

1.13

1.34

1.08

1.36

1.41

1.19

1.32

Return on average common equity (A)

11.49

13.96

11.29

14.42

15.14

12.27

14.13

Return on average tangible common

equity (A) (B)

12.59

15.36

12.23

15.03

15.81

13.42

14.79

Net interest margin (A) (C)

3.70

3.83

3.67

4.10

3.73

4.05

Efficiency ratio (D)

63.10

56.51

66.06

57.90

53.03

61.65

56.32

Capital Ratios

Third Coast Bancshares, Inc. (consolidated):

Total common equity to total assets

8.95

8.98

8.88

8.70

8.84

8.95

8.84

Tangible common equity to tangible

assets (B)

8.22

8.24

8.11

8.38

8.51

8.22

8.51

Estimated Common equity tier 1 (to risk

weighted assets)

9.20

8.82

8.84

8.65

8.85

9.20

8.85

Estimated Tier 1 capital (to risk weighted

assets)

10.28

9.89

9.96

9.97

10.25

10.28

10.25

Estimated Total capital (to risk weighted

assets)

12.45

12.01

12.13

12.48

12.90

12.45

12.90

Estimated Tier 1 capital (to average

assets)

9.55

9.35

9.65

9.55

Third Coast Bank:

Estimated Common equity tier 1 (to risk

weighted assets)

12.56

12.10

12.23

12.59

12.56

12.59

Estimated Tier 1 capital (to risk weighted

assets)

12.56

12.10

12.23

12.59

12.56

12.59

Estimated Total capital (to risk weighted

assets)

13.41

12.91

13.02

13.14

13.53

13.41

13.53

Estimated Tier 1 capital (to average

assets)

11.66

11.44

11.84

11.75

11.66

11.75

Other Data

Weighted average common shares:

Basic

16,655,357

16,591,144

14,814,661

13,889,497

13,860,149

16,027,130

13,824,963

Diluted

20,435,618

20,334,205

18,560,056

17,552,204

17,524,288

19,783,163

17,452,385

Period end common shares outstanding

16,664,058

16,639,127

16,562,268

13,891,055

13,879,099

16,664,058

13,879,099

Book value per common share

36.53

36.34

35.28

33.47

32.25

36.53

32.25

Tangible book value per common share (B)

33.31

33.08

31.97

32.12

30.91

33.31

30.91

___________

(A) Interim periods annualized.

(B) Refer to the calculation of these non-GAAP financial measures and a reconciliation to their most directly comparable GAAP financial measures at the end of this news release.

(D) Represents total noninterest expense divided by the sum of net interest income plus noninterest income. Taxes and provision for credit losses are not part of this calculation.

Third Coast Bancshares, Inc. and Subsidiary

Financial Highlights

(unaudited)

Three Months Ended

September 30, 2026

June 30, 2026

September 30, 2025

(Dollars in thousands)

Average

Outstanding

Balance

Interest

Earned/

Paid(3)

Average

Yield/

Rate(4)

Average

Outstanding

Balance

Interest

Earned/

Paid(3)

Average

Yield/

Rate(4)

Average

Outstanding

Balance

Interest

Earned/

Paid(3)

Average

Yield/

Rate(4)

Assets

Interest-earnings assets:

Loans, gross

5,396,683

94,593

6.95%

5,371,846

94,584

7.06%

4,179,027

82,054

7.79%

Investment securities available-for-sale

492,929

7,020

5.65%

432,863

6,482

6.01%

410,073

6,289

6.08%

Investment securities held-to-maturity

192,152

2,359

4.87%

191,970

2,549

5.33%

206,055

2,882

5.55%

Federal funds sold and other interest-

earning assets

299,444

2,754

3.65%

315,434

2,374

3.02%

123,680

1,278

4.10%

Total interest-earning assets

6,381,208

106,726

6.64%

6,312,113

105,989

6.73%

4,918,835

92,503

7.46%

Less: allowance for credit losses

(53,612

)

(52,533

)

(40,427

)

Total interest-earning assets, net of

allowance

6,327,596

6,259,580

4,878,408

Noninterest-earning assets

325,704

330,121

213,210

Total assets

6,653,300

6,589,701

5,091,618

Liabilities and Shareholders’ Equity

Interest-bearing liabilities:

Interest-bearing deposits

5,084,277

44,709

3.49%

5,108,166

43,384

3.41%

3,892,726

39,030

3.98%

Note payable and line of credit

142,832

2,155

5.99%

139,733

2,091

6.00%

113,560

1,754

6.13%

FHLB advances

31,986

316

3.92%

24,719

238

3.86%

73,476

870

4.70%

Total interest-bearing liabilities

5,259,095

47,180

3.56%

5,272,618

45,713

3.48%

4,079,762

41,654

4.05%

Noninterest-bearing deposits

654,281

599,000

453,980

Other liabilities

58,749

54,236

49,842

Total liabilities

5,972,125

5,925,854

4,583,584

Shareholders’ equity

681,175

663,847

508,034

Total liabilities and shareholders’

equity

6,653,300

6,589,701

5,091,618

Net interest income

59,546

60,276

50,849

Net interest spread (1)

3.08%

3.25%

3.41%

Net interest margin (2)

3.70%

3.83%

4.10%

___________

(1) Net interest spread is the average yield on interest earning assets minus the average rate on interest-bearing liabilities.

(2) Net interest margin represents net interest income divided by average interest-earning assets.

(3) Interest earned/paid includes accretion of deferred loan fees, premiums and discounts.

(4) Annualized.

Third Coast Bancshares, Inc. and Subsidiary

Financial Highlights

(unaudited)

Nine Months Ended

September 30, 2026

September 30, 2025

(Dollars in thousands)

Average

Outstanding

Balance

Interest

Earned/

Paid(3)

Average

Yield/

Rate(4)

Average

Outstanding

Balance

Interest

Earned/

Paid(3)

Average

Yield/

Rate(4)

Assets

Interest-earnings assets:

Loans, gross

5,248,655

275,070

7.01%

4,060,615

234,847

7.73%

Investment securities available-for-sale

443,053

19,609

5.92%

396,919

17,487

5.89%

Investment securities held-to-maturity

192,041

7,306

5.09%

108,575

4,489

5.53%

Federal funds sold and other interest-earning assets

325,802

8,116

3.33%

159,941

5,108

4.27%

Total interest-earning assets

6,209,551

310,101

6.68%

4,726,050

261,931

7.41%

Less: allowance for credit losses

(51,673

)

(40,550

)

Total interest-earning assets, net of allowance

6,157,878

4,685,500

Noninterest-earning assets

309,434

207,355

Total assets

6,467,312

4,892,855

Liabilities and Shareholders’ Equity

Interest-bearing liabilities:

Interest-bearing deposits

4,985,877

129,577

3.47%

3,771,393

112,791

4.00%

Note payable and line of credit

137,812

6,190

6.01%

112,318

5,186

6.17%

FHLB advances and other

32,257

867

3.59%

26,574

934

4.70%

Total interest-bearing liabilities

5,155,946

136,634

3.54%

3,910,285

118,911

4.07%

Noninterest-bearing deposits

601,182

436,412

Other liabilities

57,538

55,754

Total liabilities

5,814,666

4,402,451

Shareholders’ equity

652,646

490,404

Total liabilities and shareholders’ equity

6,467,312

4,892,855

Net interest income

173,467

143,020

Net interest spread (1)

3.14%

3.34%

Net interest margin (2)

3.73%

4.05%

___________

(1) Net interest spread is the average yield on interest earning assets minus the average rate on interest-bearing liabilities.

(2) Net interest margin represents net interest income divided by average interest-earning assets.

(3) Interest earned/paid includes accretion of deferred loan fees, premiums and discounts.

(4) Annualized.

Third Coast Bancshares, Inc. and Subsidiary

Financial Highlights

(unaudited)

Three Months Ended

2026

2025

(Dollars in thousands)

September 30

June 30

March 31

December 31

September 30

Period-end Loan Portfolio:

Real estate loans:

Commercial real estate:

Non-farm non-residential owner occupied

609,699

583,989

572,037

434,715

408,996

Non-farm non-residential non-owner occupied

988,249

932,147

929,598

710,401

687,924

Residential

514,474

530,189

543,804

333,419

334,583

Construction, development & other

888,908

887,805

894,767

823,353

826,566

Farmland

32,841

32,898

32,379

26,485

25,549

Commercial & industrial

2,368,844

2,369,582

2,182,864

1,906,616

1,772,045

Consumer

1,715

1,871

2,265

1,576

1,291

Municipal and other

88,773

97,933

93,744

158,186

108,162

Total loans

5,493,503

5,436,414

5,251,458

4,394,751

4,165,116

Asset Quality:

Nonaccrual loans

23,050

21,557

29,222

10,120

10,723

Loans > 90 days and still accruing

5,929

5,555

6,396

11,360

11,016

Total nonperforming loans

28,979

27,112

35,618

21,480

21,739

Other real estate owned

26,999

27,321

8,388

Total nonperforming assets

55,978

54,433

44,006

29,868

30,127

QTD Net (recoveries) charge-offs

(27

)

(150

)

844

(17

)

Nonaccrual loans:

Real estate loans:

Commercial real estate:

Non-farm non-residential owner occupied

5,129

3,320

618

1,235

1,237

Non-farm non-residential non-owner occupied

5,365

5,584

17,140

111

Residential

198

374

387

214

Construction, development & other

603

Commercial & industrial

12,556

12,455

10,487

8,399

9,155

Total nonaccrual loans

23,050

21,557

29,222

10,120

10,723

Asset Quality Ratios:

Nonperforming assets to total assets

0.82

0.81

0.67

0.56

0.60

Nonperforming loans to total loans

0.53

0.50

0.68

0.49

0.52

Allowance for credit losses to total loans

0.99

0.98

1.00

1.02

QTD Net (recoveries) charge-offs to average loans

(annualized)

(0.00

(0.01

(0.00

0.08

(0.00

Third Coast Bancshares, Inc. and Subsidiary

GAAP Reconciliation and Management's Explanation of Non-GAAP Financial Measures

(unaudited)

Our accounting and reporting policies conform to GAAP (generally accepted accounting principles) and the prevailing practices in the banking industry. However, we also evaluate our performance based on certain additional financial measures discussed in this earnings release as being non-GAAP financial measures. Specifically, we review Tangible Common Equity, Tangible Book Value Per Common Share, Tangible Common Equity to Tangible Assets, Return on Average Tangible Common Equity, Return on Average Assets as Adjusted (Non-GAAP), Return on Average Common Equity as Adjusted (Non-GAAP), Return on Average Tangible Common Equity as Adjusted (Non-GAAP), Net Income as Adjusted (Non-GAAP), and Diluted Earnings Per Common Share as Adjusted (Non-GAAP) for internal planning and forecasting purposes. We classify a financial measure as a non-GAAP financial measure if that financial measure excludes or includes amounts, or is subject to adjustments that have the effect of excluding or including amounts, that are not included or excluded, as the case may be, in the most directly comparable measure calculated and presented in accordance with GAAP as in effect from time to time in the United States in our statements of income, balance sheets or statements of cash flows. Non-GAAP financial measures do not include operating and other statistical measures or ratios, or statistical measures calculated using exclusively financial measures calculated in accordance with GAAP.

The non-GAAP financial measures that we discuss in this earnings release should not be considered in isolation or as a substitute for the most directly comparable or other financial measures calculated in accordance with GAAP. Moreover, the manner in which we calculate the non-GAAP financial measures that we discuss in this earnings release may differ from that of other companies reporting measures with similar names. It is important to understand how other banking organizations calculate their financial measures with names similar to the non-GAAP financial measures we have discussed in this earnings release when comparing such non-GAAP financial measures.

Management believes the following non-GAAP financial measures assist investors in understanding the financial condition and results of operations of the company:

•

Tangible Common Equity. The most directly comparable GAAP financial measure for tangible common equity is total shareholders’ equity. We believe that this measure is important to many investors in the marketplace who are interested in the relative changes from period to period of tangible common equity.

•

Tangible Book Value Per Common Share. The most directly comparable GAAP financial measure for tangible book value per common share is book value per common share. We believe that the tangible book value per common share measure is important to many investors in the marketplace who are interested in changes from period to period in book value per common share exclusive of changes in intangible assets. Goodwill and other intangible assets have the effect of increasing total book value while not increasing our tangible book value.

•

Tangible Common Equity to Tangible Assets. The most directly comparable GAAP financial measure for tangible common equity is total shareholders’ equity, the most directly comparable GAAP financial measure for tangible assets is total assets, and the most directly comparable GAAP financial measure for tangible common equity to tangible assets is total shareholders’ equity to total assets. We believe that this measure is important to many investors in the marketplace who are interested in the relative changes from period to period of tangible common equity to tangible assets, each exclusive of changes in intangible assets. Goodwill and other intangible assets have the effect of increasing both total shareholders’ equity and assets while not increasing our tangible common equity or tangible assets.

•

Return on Average Tangible Common Equity. The most directly comparable GAAP financial measure for average tangible common equity is average shareholders' equity, and the most directly comparable GAAP financial measure for return on average tangible common equity is return on average common equity. We believe that this measure is important to many investors in the marketplace who are interested in the relative changes from period to period of return on average tangible common equity, exclusive of changes in intangible assets. Goodwill and other intangible assets have the effect of increasing average shareholders’ equity while not increasing our tangible common equity.

•

Return on Average Assets as Adjusted (Non-GAAP). The most directly comparable GAAP financial measure for return on average assets as adjusted (non-GAAP) is return on average assets. We believe that this measure is important to many investors in the marketplace who are interested in the relative changes from period to period of return on average assets as adjusted for the exclusion of significant income or expenses that are unusual or not expected to recur during the year, in order to reduce distortion within the ratios.

•

Return on Average Common Equity as Adjusted (Non-GAAP). The most directly comparable GAAP financial measure for return on average common equity as adjusted (non-GAAP) is return on average common equity. We believe that this measure is important to many investors in the marketplace who are interested in the relative changes from period to period of return on average common equity as adjusted for the exclusion of significant income or expenses that are unusual or not expected to recur during the year, in order to reduce distortion within the ratios.

•

Return on Average Tangible Common Equity as Adjusted (Non-GAAP). The most directly comparable GAAP financial measure for return on average tangible common equity as adjusted (non-GAAP) is return on average common equity. We believe that this measure is important to many investors in the marketplace who are interested in the relative changes from period to period of return on average tangible common equity, exclusive of changes in intangible assets. Goodwill and other intangible assets have the effect of increasing average shareholders’ equity while not increasing our tangible common equity as adjusted for the exclusion of significant income or expenses that are unusual or not expected to recur during the year, in order to reduce distortion within the ratios.

•

Net Income as Adjusted (Non-GAAP). The most directly comparable GAAP financial measure for net income as adjusted (non-GAAP) is net income. We believe that this measure is important to many investors in the marketplace who are interested in the relative changes from period to period of net income as adjusted for the exclusion of significant income or expenses that are unusual or not expected to recur during the year, in order to reduce distortion within the totals.

•

Diluted Earnings Per Common Share as Adjusted (Non-GAAP). The most directly comparable GAAP financial measure for diluted earnings per common share as adjusted (non-GAAP) is diluted earnings per common share. We believe that this measure is important to many investors in the marketplace who are interested in the relative changes from period to period of diluted earnings per common share as adjusted for the exclusion of significant income or expenses that are unusual or not expected to recur during the year, in order to reduce distortion within the ratios.

The calculations of these non-GAAP financial measures are as follows:

Three Months Ended

Nine Months Ended

2026

2025

2026

2025

(Dollars in thousands, except share and per share data)

September 30

June 30

March 31

December 31

September 30

Tangible Common Equity:

Total shareholders' equity

674,932

670,773

650,530

531,027

513,830

674,932

513,830

Less: Preferred stock including additional

paid in capital

66,160

Total common equity

608,772

604,613

584,370

464,867

447,670

608,772

447,670

Less: Goodwill and core deposit intangibles,

net

53,734

54,160

54,883

18,680

18,720

53,734

18,720

Tangible common equity

555,038

550,453

529,487

446,187

428,950

555,038

428,950

Common shares outstanding at end of period

16,664,058

16,639,127

16,562,268

13,891,055

13,879,099

16,664,058

13,879,099

Book Value Per Common Share

36.53

36.34

35.28

33.47

32.25

36.53

32.25

Tangible Book Value Per Common Share

33.31

33.08

31.97

32.12

30.91

33.31

30.91

Tangible Assets:

Total assets

6,805,620

6,735,501

6,582,073

5,340,759

5,061,808

6,805,620

5,061,808

Adjustments: Goodwill and core deposit

intangibles, net

53,734

54,160

54,883

18,680

18,720

53,734

18,720

Tangible assets

6,751,886

6,681,341

6,527,190

5,322,079

5,043,088

6,751,886

5,043,088

Total Common Equity to Total Assets

8.95

8.98

8.88

8.70

8.84

8.95

8.84

Tangible Common Equity to Tangible Assets

8.22

8.24

8.11

8.38

8.51

8.22

8.51

Average Tangible Common Equity:

Average shareholders' equity

681,175

663,847

612,170

525,759

508,034

652,646

490,404

Less: Average preferred stock including

additional paid in capital

66,160

Average common equity

615,015

597,687

546,010

459,599

441,874

586,486

424,244

Less: Average goodwill and core deposit

intangibles, net

54,007

54,580

42,115

18,705

18,746

50,277

18,785

Average tangible common equity

561,008

543,107

503,895

440,894

423,128

536,209

405,459

Net Income

19,004

21,987

16,368

17,898

18,057

57,359

48,393

Less: Dividends declared on preferred stock

1,197

1,184

1,171

1,197

3,552

3,553

Net Income Available to Common Shareholders

17,807

20,803

15,197

16,701

16,860

53,807

44,840

Return on Average Common Equity(A)

11.49

13.96

11.29

14.42

15.14

12.27

14.13

Return on Average Tangible Common Equity(A)

12.59

15.36

12.23

15.03

15.81

13.42

14.79

___________

(A) Interim periods annualized.

Three Months Ended

Nine Months Ended

2026

2025

2026

2025

(Dollars in thousands, except share and per share data)

September 30

June 30

March 31

December 31

September 30

Net Income as adjusted (non-GAAP)

Net income

19,004

21,987

16,368

17,898

18,057

57,359

48,393

Pre-tax adjustments:

Acquisition-related accelerated amortization on

loan fair value marks

637

228

549

1,414

Gain on sale of factored receivables

(3,463

)

(3,463

)

Acquisition-related salaries and employee

benefits

391

497

1,310

2,198

Acquisition-related other professional expense

2,179

130

1,276

505

3,585

Total pre-tax adjustments

3,207

(2,608

)

3,135

505

3,734

Tax-effect of adjustments

589

(479

)

576

686

Total adjustments after tax

2,618

(2,129

)

2,559

420

3,048

Net income as adjusted (non-GAAP)

21,622

19,858

18,927

18,318

18,057

60,407

48,393

Preferred stock dividends

1,197

1,184

1,171

1,197

3,552

3,553

Net income available to common shareholders

as adjusted (non-GAAP)

20,425

18,674

17,756

17,121

16,860

56,855

44,840

Diluted earnings per share

0.93

1.08

0.88

1.02

1.03

2.90

2.77

Adjustments after-tax

0.13

(0.10

)

0.14

0.02

0.15

Diluted earnings per common share as adjusted

(non-GAAP)

1.06

0.98

1.02

1.04

1.03

3.05

2.77

Return on average assets

1.13

1.34

1.08

1.36

1.41

1.19

1.32

Return on average assets as adjusted

(non-GAAP)(A)

1.29

1.21

1.25

1.39

1.41

1.25

1.32

Return on average common equity as adjusted

(non-GAAP)(A)

13.18

12.53

13.19

14.78

15.14

12.96

14.13

Return on average tangible common equity

as adjusted (non-GAAP)(A)

14.44

13.79

14.29

15.41

15.81

14.18

14.79

___________

(A) Interim periods annualized.

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.

EX-99.2

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02 DISCLAIMER Forward-Looking Statements 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 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,” “we,” “us,” or “our”) with respect to, among other things, future events and our financial performance. 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 our industry, management’s beliefs and certain assumptions made by management, many of which, by their nature, are inherently uncertain and beyond our control. Accordingly, we caution 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 we believe 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 our actual results to differ materially from those indicated in these forward-looking statements, including, but not limited to, the following: interest rate risk and fluctuations in interest rates; market conditions and economic trends generally and in the banking industry; our ability to maintain important deposit relationships; our ability to grow or maintain our deposit base; our ability to implement our expansion strategy; our ability to pay dividends on our Series A Preferred Stock; credit risk associated with our business; economic conditions affecting the real estate market; prepayment risks associated with commercial real estate loans; liquidity risks in the securitization market; operational risks related to the administration of securitized assets; changes in key management personnel; 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, 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 Bancshares, Inc (“Great Plains”) by Third Coast; the outcome of any legal proceedings that may be instituted against Third Coast or Great Plains; 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 combine company or the expected benefits of the transaction); 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; 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; disruption to the parties’ businesses as a result of the announcement and pendency of the transaction; the possibility that transaction may be more expensive to complete than anticipated, including as a result of unexpected factors or events; 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; the dilution caused by Third Coast’s issuance of additional shares of its common stock in connection with the transaction; a material adverse change in the financial condition of Third Coast or Great Plains; the diversion of management’s attention and time from ongoing business operations and opportunities on merger-related matters; and 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 our actual results to differ materially from those described in the forward-looking statements, please see the risk factors discussed in our Annual Report on Form 10-K for the year ended December 31, 2025, filed with the U.S. Securities and Exchange Commission (the “SEC”), and our 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 presentation. If one or more events related to these or other risks or uncertainties materialize, or if our underlying assumptions prove to be incorrect, actual results may differ materially from what we anticipate. 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 we do 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 us to predict which will arise. In addition, we cannot assess the impact of each factor on our 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.  Continued next page.

03 DISCLAIMER 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. NON-GAAP FINANCIAL MEASURES This presentation contains non-GAAP financial measures, including Tangible Common Equity, Tangible Book Value Per Common Share, Tangible Common Equity to Tangible Assets, Return on Average Assets as Adjusted (Non-GAAP), Return on Average Common Equity as Adjusted (Non-GAAP), Return on Average Tangible Common Equity as Adjusted (Non-GAAP), Net Income as Adjusted (Non-GAAP), and Diluted Earnings Per Common as Adjusted (Non-GAAP), Return on Average Tangible Common Equity. The non-GAAP financial measures that we discuss in this presentation should not be considered in isolation or as a substitute for the most directly comparable or other financial measures calculated in accordance with GAAP. A reconciliation of the non-GAAP financial measures used in this presentation to the most directly comparable GAAP measures is provided in the Appendix to this presentation. 

04 SENIOR EXECUTIVE MANAGEMENT Bart O. Caraway Founder, Chairman, President & CEO Founded Third Coast in 2008. Serves as Chairman, President, and CEO of the Bank and the Company since formation in 2013. Chairman, President, and CEO of Third Coast Commercial Capital. Texas licensed attorney and CPA with over 30 years of banking and public accounting experience. University of Texas BBA in Accounting. Law Degree from University of Houston Law School.  John McWhorter Sr. EVP, Chief Financial Officer Serves as Senior Executive Vice President and Chief Financial Officer since April 2015. Over 35 years of banking, bank audit and public accounting experience as a CPA. Previously held positions with Bank of Houston as EVP CFO, Cadence Bancorporation LLC as EVP CFO, and Amegy Bank as SVP Controller during its IPO. University of Texas BBA in Accounting. Audrey Spaulding Sr. EVP, Chief Credit Officer Serves as Senior Executive Vice President and Chief Credit Officer since June 2015. Also serves as Chairperson of Officers’ Loan Committee and the Special Assets Committee. Over 35 years of banking and bank regulator experience. Previously held positions with LegacyTexas Bank as SVP Credit Officer and Director of Credit Risk Management, as well as Senior and Commissioned Bank Examiner with The Federal Reserve Bank of Dallas. Texas Tech University BBA in Finance.

05 EXECUTIVE MANAGEMENT Bill Bobbora EVP, Chief Banking Officer Serves as EVP Chief Banking Officer since May 2022 and joined the bank in October 2021. Over 30 years experience in Commercial, Corporate, and Investment Banking. Previously held positions as Head of Corporate Banking at Third Coast Bank, Managing Director of Regions Securities Corporate & Investment Banking in Houston, EVP Managing Director with Cadence Bank, Texas Commerce Bank (now JP Morgan Chase), Wachovia (now Wells Fargo) and KeyBanc Capital Markets. University of Nebraska and University of Texas MBA.  Liz Eber EVP, Chief Legal Officer Serves as EVP Chief Legal Officer since March 2024 and joined the bank in January 2023. Expertise in legal support across various domains including banking, payments, privacy, governance, employment, litigation, and compliance. Previously held positions with FIS Global and the federal government in Washington, D.C. George Mason University’s Antonin Scalia Law School and University of Florida. Christopher Peacock EVP, Chief Retail Officer Serves as EVP Chief Retail Officer since February 2021 when he joined the bank. Over 35 years of banking experience and 25 years of retail executive experience. Previously held positions as Chief Financial Officer and Retail Executive at BMO Harris and Huntington National Banks. Florida State University BS in Finance. Laura Rau EVP, Chief Risk Officer Serves as EVP Chief Risk Officer since January 2026 when she joined the bank. Most recently held the position of Chief Compliance Officer at a large regional bank. Expertise in regulatory compliance, including BSA/AML sanctions and counter-terrorist financing, consumer compliance, and compliance management systems. Additional expertise in money transmitters and MSBs. Previously held positions include MoneyGram and Western Union as the Head of Global BSA/AML Program Office as well as Washington State Gambling Commission regulator and Federal Reserve Bank internal auditor. University of Minnesota BA and Regis University MBA.

06 FRANCHISE OVERVIEW  FINANCIAL HIGHLIGHTS  (1) Efficiency ratio represents noninterest expense divided by the sum of net interest income and noninterest income (2) Refer to the calculation of non-GAAP financial measures on page 23. As of As of As of As of As of As of Balance Sheet ($M, Except per Share) 12/31/2021 12/31/2022 12/31/2023 12/31/2024 12/31/2025 9/30/2026 Total Assets $2,499 $3,773 $4,396 $4,942 $5,341 $6,806 Total Loans $2,069 $3,108 $3,639 $3,966 $4,395 $5,494 Total Deposits $2,141 $3,236 $3,803 $4,310 $4,627 $5,925 Loans/ Deposits 96.6% 96.0% 95.7% 92.0% 95.0% 92.7% Tangible Book Value per Common Share(2) $20.87 $21.90 $24.02 $27.29 $32.12 $33.31 FYE FYE FYE FYE FYE YTD Profitability (Year-to-Date) 12/31/2021 12/31/2022 12/31/2023 12/31/2024 12/31/2025 9/30/2026 Return on Average Assets 0.55% 0.58% 0.86% 1.05% 1.33% 1.19% Return on Average Tangible Common Equity (2) 7.55% 6.00% 9.19% 12.09% 14.21% 13.42% Yield on Loans 6.01% 5.43% 7.39% 7.80% 7.68% 7.01% Cost of Deposits 0.47% 1.14% 3.53% 4.08% 3.52% 3.10% Net Interest Margin 4.65% 3.82% 3.73% 3.67% 4.06% 3.73% Efficiency Ratio(1) 74.43% 71.40% 67.55% 60.88% 56.75% 61.65% FYE FYE FYE FYE FYE As of Asset Quality 12/31/2021 12/31/2022 12/31/2023 12/31/2024 12/31/2025 9/30/2026 NPAs to Total Assets 0.69% 0.32% 0.39% 0.58% 0.56% 0.82% NCOs to Avg. Loans 0.16% 0.04% 0.04% 0.09% 0.09% (0.00%) We are a commercially focused bank founded in 2008, with headquarters in Humble, Texas. Third Coast currently has 20 branches located throughout Austin, Beaumont-Port Arthur, Dallas-Fort Worth, Greater Houston, and San Antonio markets. Headquarters Branches (19)

07 DYNAMIC TEXAS MARKETS  Austin Source: https://datusa.io and https://data.census.gov/ Beaumont-Port Arthur Dallas-Fort Worth Greater Houston San Antonio Austin MSA is projected to be the fastest growing large MSA in the country (as defined by MSAs with a population over two million), with a forecasted growth rate of 8.5% through 2026. Austin has transformed itself into a hotbed for technology companies and was recently designated as a top 10 Global Technology Innovation Hub City by KPMG. The Golden Triangle, a core market for Third Coast. Investment in Beaumont and Southeast Texas with $80 billion worth of current and planned industrial projects, more than $4.5 billion in infrastructure projects and more than $460 million in commercial and retail projects. This region is a strategic location seated along the Gulf Coast, 30 miles west of Louisiana and 90 miles east of Houston, businesses have access to more than 2.5 million people within a two-hour drive. Dallas MSA is the largest in Texas and the fourth largest in the U.S. and has been growing by approximately 322 residents every day. It boasts the largest gross domestic product in the state and the sixth largest in the nation. DFW headquarters 22 Fortune 500 companies including ExxonMobil, AT&T, American Airlines and Charles Schwab. It also hosts approximately 3.6 million working professionals and ranks first in the nation for total job growth from December 2015 through December 2020. Houston MSA is projected to grow approximately 7.6% over the next five years, ranking first among the nation’s 10 largest MSAs and more than double the nationwide projected growth. Houston is the nation’s fourth largest most populous city and fifth most populous metro area, with approximately 2.31 million and 7.05 million residents, respectively. It’s a center for global trade, with the Houston Port ranking first among U.S. ports. It is also headquarters for 24 Fortune 500 companies and employs approximately 3.1 million working professionals. The population in the San Antonio MSA is projected to grow by approximately 7.6% over the next five years, compared to 6.8% for the state of Texas and 2.9% for the United States.

08 LINE OF BUSINESS DIVERSITY  COMMERCIAL BANKING Commercial lines of business include Community Banking, the foundation on which TCB is built and remains a core strength, Commercial Banking, and Corporate Banking, both built out of strong regional middle market banking teams focused on Gulf Coast, Houston, Central Texas, and DFW economies. Commercial Loans Lines of Credit Term Loans Owner-Occupied Real Estate & Investment Real Estate Equipment Financing Acquisition Financing CRE Community, Middle Market, and Corporate Banking SBA Member of the SBA Preferred Lenders Program, enabling expedited approval process for customers. Began as key element to serving small to medium-sized businesses. Small Business Loans Improved Real Estate Acquisition EXIM Financing TREASURY MANAGEMENT Our comprehensive Treasury Management suite enhances commercial client engagement by delivering technology-enabled cash flow, payment, and fraud mitigation solutions, creating recurring fee revenue opportunities and stronger operating account retention. BUILDER FINANCE Expert bankers in the residential real estate market, began in second quarter of 2021. Specialty banking and lending solutions for private and publicly traded home building companies. Self contained business unit with stellar credit record. Homebuilder Master Planned Community Bond Anticipation Note Finance Institutional MORTGAGE Mortgage offers loans for Home Purchase, Home Refinance, Construction lending, and Investment Properties. Note: SBA and Mortgage lines of business do not individually make up a material portion of the total loan portfolio.

09 BALANCE SHEET GROWTH  $ in Millions TOTAL LOANS TOTAL DEPOSITS TOTAL ASSETS

10 PROFITABILITY  (1) Refer to the calculation of non-GAAP financial measures on page 23. NET INCOME - QUARTERLY TANGIBLE BOOK VALUE PER COMMON SHARE (1) DILUTED E.P.S. - QUARTERLY $ in Thousands

11 PROFITABILITY TRENDS  (1) Interim period annualized. NET INTEREST MARGIN – QUARTERLY (1) NONINTEREST EXP. TO AVG. EARNING ASSETS – QTRLY (1) EFFICIENCY RATIO - QUARTERLY

12 PROFITABILITY TRENDS  Interim period annualized. PRE-TAX, PRE-PROVISION ROAA – QUARTERLY (1) RETURN ON AVERAGE COMMON EQUITY – QUARTERLY (1) RETURN ON AVERAGE ASSETS – QUARTERLY (1)

13 CAPITAL RATIOS  Top graph assumes Preferred Stock is converted to Common Stock. Refer to the calculation of non-GAAP financial measures on pages 23, 24, and 25. TANGIBLE COMMON EQUITY TO TANGIBLE ASSETS (1) (2) TOTAL RISK BASED CAPITAL RATIO - BANK TOTAL COMMON EQUITY TO TOTAL ASSETS

14 DEPOSIT BASE TRANSFORMATION  $ in Millions. A solid foundation of deposits.

15 RURAL MARKET GROWTH  Sources: Bank Records. Rural Markets Acquired include Lake Jackson, Nixon, Detroit, and LaVernia from Heritage Bank acquisition in 2020. CAGR (Compounded Annual Growth Rate) “The results from the Heritage merger reflect a simple strategy executed steadily: keep great local bankers in place, invest in the community, and deepen customer relationships. This approach nearly doubled deposits in our rural branches and consistently outperformed the underlying market.” Christopher Peacock, Chief Retail Officer A durable source of deposit growth.

16 LOAN COMPOSITION  A well-balanced, stable loan portfolio. $4.4 B in Loans | As of 12.31.2025 Yield 7.68% | NIM 4.06% $5.5 B in Loans | As of 09.30.2026 Yield 7.01% | NIM 3.73%

17 CREDIT TRENDS  Interim period annualized. NPA TO TOTAL ASSETS ACL TO TOTAL LOANS (1) NPL TO TOTAL LOANS NCOs to AVERAGE LOANS – QUARTERLY (1)

18 COMPREHENSIVE MONITORING Third Coast has a robust commitment to sound underwriting and comprehensive monitoring. Below is an overview of the comprehensive monitoring process.  Sets ticklers for financial reporting and covenant tracking Monitors receipt of updated financial documents Reviews and verifies borrowing base calculations and compliance Reviews and verifies compliance with loan covenants Trend cards are kept on every borrower over $10MM and include: Income statement and balance sheet metrics by quarter, YTD and TTM Margins, cash flow coverage/DSC, leverage, and other applicable ratios Covenant calculations prepared by borrower and prepared by bank, compliance with covenants Reviews and verifies borrowing base calculations and compliance Quarterly meetings are held to review all borrowers Annual reviews are conducted on all borrowers Trend cards are kept on every borrower and include: Income statement and balance spreads Liquidity, sales and closings, accounts payable Projections and comparison to actual Stress testing of closings, revenue and profit margins Global inventory and breakeven number of units Borrowing Base monitoring and compliance A&D activity, curtailments, interest reserve stressed Market information is monitored monthly Monthly meetings are held to review compliance/noncompliance with covenants Quarterly meetings are held to review all borrowers Annual reviews are conducted on all borrowers Community Banking Monitoring Corporate Banking Monitoring Builder Finance Monitoring   

19 COMPLIANCE RISK MANAGEMENT Third Coast has a robust commitment to building a best-in-class compliance program. We are looking across all business processes, functions, assets, and outsourced entities to understand the full scope of risk. And we use that comprehensive view to foster risk awareness throughout our organization and culture.  We are documenting and mapping: Impacted business elements to risks and requirements. Processes, controls, and monitoring that mitigate risk to business elements. Outsources services to risks and coverage. We are creating real-time visibility though dashboards and reporting. We are transforming to a proactive: Change management program. Gap identification and remediation process. Monitoring and metrics process. We are converting to a quantitative risk assessment. Compliance Enhancements  Risk and Requirement Inventories Laws, Rules, and Regulations Risk Taxonomy Policies Business Elements Business Processes Technology Assets Products and Services Vendors Risk Management Controls Metrics, and Monitoring Testing Risk Assessment Issue Management Change Management

20 STRATEGIC INITIATIVES Evaluate opportunities within our existing markets to leverage our established branch network and enhance operational efficiencies. Continue to recruit strategic hires and selectively expand into new markets that will broaden the customer base; thereby increasing earning assets and deposits while diversifying our portfolio and operations. Remain open to strategic acquisition opportunities on a case-by-case basis.  Enhancement of supplemental, specialty, and commercial banking solutions. Investment in high-touch, high-technology solutions to remain relevant with customers. Evaluation of future business opportunities to broaden brand. Foster a culture of innovation that prioritizes efficiency and profitability as integral aspects of strategic alignment. Enable the team to adapt to priorities in response to external factors. Emphasize core deposit growth through banker incentives and treasury management service offerings. Leverage the dynamic Texas economy to grow customer base and market share. Leverage experienced management team, board, and bankers to grow customer base and market share through relationship-based banking. Generate shareholder value. Achieve consistent financial performance that positions Bank in top quartile of its peers. Operate a balanced-risk banking model: focusing on conservative credit culture for underwriting loans, customer acquisition for market share, core deposits for funding, and efficient operations. Regularly review and proactively adjust strategic initiatives to uphold competitive advantages in the financial services industry. MARKET EXPANSION PRODUCTS & SERVICES GROWTH STRATEGIES VALUE OBJECTIVES

21 INVESTMENT HIGHLIGHTS Highly experienced management team with over 100+ years of combined financial services experience.  With locations encompassing the four largest metropolitan areas in Texas in and around Austin, Beaumont, Dallas-Fort Worth, Houston, and San Antonio, we are in one of the best economies in the country and the world. A high-touch relationship-driven approach to banking that offers a competitive, solutions-oriented value proposition and supports winning and retaining business from both middle-market and larger institutions. We offer a well-diversified suite of commercial and consumer products, with an agile response to changing market conditions and customer needs, supporting balance, recurring revenue streams. EXPERIENCED TEAM MARKETS OF OPERATION RELATIONSHIP-DRIVEN DIVERSIFIED PRODUCTS TECHNOLOGY SERVICES DISCIPLINED UNDERWRITING ENTERPRISING MODEL TRANSFORMATIVE GROWTH Combined with our high-touch relationship approach to banking, our technology-enabled, high-impact banking and treasury solutions deepen customer relationships and support growth in fee-based revenue. Responsive and disciplined underwriting, supported by comprehensive monitoring and risk management, helps maintain a high-quality, well-balanced loan portfolio through cycles. Entrepreneurial, agile business model that leverages our banking platform and scalable operating model to drive profitable organic and acquisitive growth. Targeted investment in infrastructure, technology and talent, along with strategic M&A, is designed to scale from a high-growth community bank into a top-tier commercial bank franchise.

22 TCBX BOARD OF DIRECTORS NAME AGE AS OF 9/30/2026 DIRECTOR SINCE SUMMARY BIO Bart O. Caraway 55 2013 Serves as Founder, Chairman, President and CEO of the Company. A certified CPA since 1996, and a licensed attorney since 1999. Prior experience includes executive roles at several community banks, financial and consulting practice at audit firm. Carolyn Bailey 65 2020 Partner in tax services at E&Y from 2007 until retirement in 2019. Prior experience includes consulting large multinational companies on tax and accounting matters such as Continental Airlines and GE Capital as well as Ernst & Young. Dr. Martin Basaldua 75 2013 Licensed Physician since 1981. Founder of Vytalus Medical Group, PLLC. Prior experience includes organization of several hospitals and medical centers, as well as involvement on civic and nonprofit boards. Dennis Bonnen 54 2020 2008 founder of Heritage Bancorp which merged with Third Coast. Experience includes executive roles at a beverage distributor, consulting firm, and banks such as First Community, Moody National, and Wells Fargo. Former Texas Speaker of the House. Dr. Greg Bonnen 60 2023 Founded the Texas Brain and Spine Center. Experience includes a residency in neurosurgery, president of the board for the Medical Strategic Network, co-founder of Houston Physician’s Hospital, and practices at Memorial Herman Southeast. W. Donald Brunson (Advisory) 81 2019 Retired, CPA since 1970s. Prior experience includes commercial banking and asset-based lending, public accounting, as well as co-founder and former chairman of the board of Bank of Houston. Lynn Chang Eisenhart 48 2024 Leadership team for the Bill & Melinda Gates Foundation’s Strategic Investment Fund. Experience includes global fintech investment as well as prior positions in retail banking with Washington Mutual and technology with T-Mobile. Troy A. Glander 55 2013 Partner and member of A Nava & Glander, PLLC since 2012 which practices business litigation. Experience includes board positions with the Texas Association of Defense Counsel and Texas Exes, and significant business and legal expertise. Clint Greenleaf 52 2026 Prior board member of Keystone Bancshares which merged with Third Coast. Entrepreneur and senior executive with accounting and management experience. David Phelps 70 2023 Led the business advisory practice of Briggs & Veselka from 2004 until his retirement in 2020. Prior experience includes consulting, audit, advisory services, accounting, as well as positions on boards such as Uni. of Houston Acct. Advisory Board. Tony Scavuzzo 45 2022 Managing Principal of Castle Creek asset management firm since 2009. Experience includes several board positions such as Blue Ridge Bankshares, Pathfinder Bancorp, McGregor Bancshares, Texas Community Bancshares, and Central Payments LLC. Mary Brennan Stich 69 2024 Business lawyer since 1980s. Prior experience includes positions as an executive, c-suite advisor, and deputy general counsel for public and private companies such as Rackspace Technology and iHeart Media. Board member for Goodwill Industries. Joseph L. Stunja 73 2013 Retired, former Business Development Officer of the Bank from 2010 to 2016. Prior experience includes director and treasurer of the San Jacinto River Authority, president of Friendswood Development Company, and RE/MAX Associates Northeast. Reagan Swinbank 45 2020 Partner at Sprint Transport and related Sprint Companies. Previously held position on Heritage Bancorp board. Experience includes industrial services along the Texas and Louisiana gulf coast. 

23 Non-GAAP FINANCIAL MEASURES  For the Year Ended December 31, (Dollars in thousands, except share and per share data) 2021 2022 2023 2024 2025 Tangible Common Equity Total shareholders' equity $ 299,007 $ 381,780 $ 411,974 $ 460,719 $ 531,027 Less: Preferred stock including additional paid in capital - 66,225 66,225 66,160 66,160 Total common equity 299,007 315,555 345,749 394,559 464,867 Less: Goodwill and core deposit intangibles, net 19,326 19,165 19,003 18,841 18,680 Tangible common equity $ 279,681 $ 296,390 $ 326,746 $ 375,718 $ 446,187 Tangible Book Value Common shares outstanding at end of period 13,403,324 13,531,736 13,604,665 13,769,780 13,891,055 Book Value Per Share $ 22.31 $ 23.32 $ 25.41 $ 28.65 $ 33.47 Tangible Book Value Per Share $ 20.87 $ 21.90 $ 24.02 $ 27.29 $ 32.12 Return on Average Tangible Common Equity Average shareholders' equity $ 170,630 $ 323,685 $ 397,224 $ 440,184 $ 499,315 Less: Average preferred stock including additional paid in capital - 16,900 66,225 66,198 66,160 Average common equity 170,630 306,785 330,999 373,986 433,155 Less: Average goodwill and core deposit intangibles, net 19,404 19,245 19,088 18,926 18,765 Average tangible common equity $ 151,226 $ 287,540 $ 311,911 $ 355,060 $ 414,390 Net Income $ 11,424 $ 18,659 $ 33,401 $ 47,671 $ 66,291 Less: Dividends declared on preferred stock - 1,418 4,736 4,749 4,750 Net Income Available to Common Shareholders $ 11,424 $ 17,241 $ 28,665 $ 42,922 $ 61,541 Return on Average Common Equity 6.70% 5.62% 8.66% 11.48% 14.21% Return on Average Tangible Common Equity 7.55% 6.00% 9.19% 12.09% 14.85%

24 Non-GAAP FINANCIAL MEASURES  Continued next page. As of and for the Three Months Ended 2022 2023 2024 2025 2026 (Dollars in thousands, except share and per share data) December 31 March 31 June 30 September 30 December 31 March 31 June 30 September 30 December 31 March 31 June 30 September 30 December 31 March 31 June 30 September 30 Tangible Common Equity Total shareholders' equity $ 381,780 $ 387,044 $ 395,945 $ 400,331 $ 411,974 $ 423,618 $ 434,998 $ 450,548 $ 460,719 $ 479,786 $ 496,115 $ 513,830 $ 531,027 $ 650,530 $ 670,773 $ 674,932 Less: Preferred stock including additional paid in capital 66,225 66,225 66,225 66,225 66,225 66,225 66,225 66,117 66,160 66,160 66,160 66,160 66,160 66,160 66,160 66,160 Total common equity 315,555 320,819 329,720 334,106 345,749 357,393 368,773 384,431 394,559 413,626 429,955 447,670 464,867 584,370 604,613 608,772 Less: Goodwill and core deposit intangibles, net 19,165 19,124 19,084 19,043 19,003 18,963 18,922 18,882 18,841 18,801 18,761 18,720 18,680 54,883 54,160 53,734 Tangible common equity $ 296,390 $ 301,695 $ 310,636 $ 315,063 $ 326,746 $ 338,430 $ 349,851 $ 365,549 $ 375,718 $ 394,825 $ 411,194 $ 428,950 $ 446,187 $ 529,487 $ 550,453 $ 555,038 Tangible Book Value Common shares outstanding at end of period 13,531,736 13,579,498 13,609,697 13,600,211 13,604,665 13,652,888 13,665,505 13,667,591 13,769,780 13,825,286 13,851,581 13,879,099 13,891,055 16,562,268 16,639,127 16,664,058 Book Value Per Share $ 23.32 $ 23.63 $ 24.23 $ 24.57 $ 25.41 $ 26.18 $ 26.99 $ 28.13 $ 28.65 $ 29.92 $ 31.04 $ 32.25 $ 33.47 $ 35.28 $ 36.34 $ 36.53 Tangible Book Value Per Share $ 21.90 $ 22.22 $ 22.82 $ 23.17 $ 24.02 $ 24.79 $ 25.60 $ 26.75 $ 27.29 $ 28.56 $ 29.69 $ 30.91 $ 32.12 $ 31.97 $ 33.08 $ 33.31 Tangible Common Equity to Tangible Assets Total assets $ 3,773,148 $ 3,859,657 $ 3,963,482 $ 4,215,792 $ 4,396,074 $ 4,660,403 $ 4,474,119 $ 4,627,770 $ 4,942,446 $ 4,896,989 $ 4,943,771 $ 5,061,808 $ 5,340,759 $ 6,582,073 $ 6,735,501 $ 6,805,620 Adjustments: Goodwill and core deposit intangibles, net 19,165 19,124 19,084 19,043 19,003 18,963 18,922 18,882 18,841 18,801 18,761 18,720 18,680 54,883 54,160 53,734 Tangible assets $ 3,753,983 $ 3,840,533 $ 3,944,398 $ 4,196,749 $ 4,377,071 $ 4,641,440 $ 4,455,197 $ 4,608,888 $ 4,923,605 $ 4,878,188 $ 4,925,010 $ 5,043,088 $ 5,322,079 $ 6,527,190 $ 6,681,341 $ 6,751,886 Total Common Equity to Total Assets 8.36% 8.31% 8.32% 7.93% 7.86% 7.67% 8.24% 8.31% 7.98% 8.45% 8.70% 8.84% 8.70% 8.88% 8.98% 8.95% Tangible Common Equity to Tangible Assets 7.90% 7.86% 7.88% 7.51% 7.46% 7.29% 7.85% 7.93% 7.63% 8.09% 8.35% 8.51% 8.38% 8.11% 8.24% 8.22% Tangible Common Equity assuming Preferred Stock is converted to Common Stock 362,615 367,920 376,861 381,288 392,971 404,655 416,076 431,666 441,878 460,985 477,354 495,110 512,347 595,647 616,613 621,198 Tangible Common Equity to Tangible Asssets assuming Preferred Stock is converted to Common Stock 9.66% 9.58% 9.55% 9.09% 8.98% 8.72% 9.34% 9.37% 8.97% 9.45% 9.69% 9.82% 9.63% 9.13% 9.23% 9.20% Return on Average Tangible Common Equity Average shareholders' equity $ 381,271 $ 384,794 $ 393,773 $ 402,049 $ 407,972 $ 420,646 $ 433,510 $ 446,124 $ 460,169 $ 472,041 $ 490,741 $ 508,034 $ 525,759 $ 612,170 $ 663,847 $ 681,175 Less: Average preferred stock including additional paid in capital 66,329 66,225 66,225 66,225 66,225 66,225 66,225 66,223 66,121 66,160 66,160 66,160 66,160 66,160 66,160 66,160 Average common equity 314,942 318,569 327,548 335,824 341,747 354,421 367,285 379,901 394,048 405,881 424,581 441,874 459,599 546,010 597,687 615,015 Less: Average goodwill and core deposit intangibles, net 19,184 19,149 19,108 19,068 19,027 18,987 18,946 18,906 18,865 18,826 18,784 18,746 18,705 42,115 54,580 54,007 Average tangible common equity $ 295,758 $ 299,420 $ 308,440 $ 316,756 $ 322,720 $ 335,434 $ 348,339 $ 360,995 $ 375,183 $ 387,055 $ 405,797 $ 423,128 $ 440,894 $ 503,895 $ 543,107 $ 561,008 Net Income $ 7,525 $ 9,243 $ 8,891 $ 5,578 $ 9,689 $ 10,367 $ 10,796 $ 12,775 $ 13,733 $ 13,589 $ 16,747 $ 18,057 $ 17,898 $ 16,368 $ 21,987 $ 19,004 Less: Dividends declared on preferred stock 1,418 1,171 1,184 1,184 1,197 1,171 1,184 1,198 1,196 1,171 1,185 1,197 1,197 1,171 1,184 1,197 Net Income Available to Common Shareholders $ 6,107 $ 8,072 $ 7,707 $ 4,394 $ 8,492 $ 9,196 $ 9,612 $ 11,577 $ 12,537 $ 12,418 $ 15,562 $ 16,860 $ 16,701 $ 15,197 $ 20,803 $ 17,807 Return on Average Common Equity(A) 7.69% 10.28% 9.44% 5.19% 9.86% 10.44% 10.53% 12.12% 12.66% 12.41% 14.70% 15.14% 14.42% 11.29% 13.96% 11.49% Return on Average Tangible Common Equity(A) 8.19% 10.93% 10.02% 5.50% 10.44% 11.03% 11.10% 12.76% 13.29% 13.01% 15.38% 15.81% 15.03% 12.23% 15.36% 12.59%

25 Non-GAAP FINANCIAL MEASURES  As of and for the Three Months Ended 2022 2023 2024 2025 2026 (Dollars in thousands, except share and per share data) December 31 March 31 June 30 September 30 December 31 March 31 June 30 September 30 December 31 March 31 June 30 September 30 December 31 March 31 June 30 September 30 Net Income as adjusted (non-GAAP) Net income $ 7,525 $ 9,243 $ 8,891 $ 5,578 $ 9,689 $ 10,367 $ 10,796 $ 12,775 $ 13,733 $ 13,589 $ 16,747 $ 18,057 $ 17,898 $ 16,368 $ 21,987 $ 19,004 Pre-tax adjustments: Acquisition-related accelerated amortization on loan fair value marks - - - - - - - - - - - - - 549 228 637 Gain on sale of factored receivables - - - - - - - - - - - - - - (3,463) - Acquisition-related salaries and employee benefits - - - - - - - - - - - - - 1,310 497 391 Acquisition-related other professional expense - - - - - - - - - - - - 505 1,276 130 2,179 Total pre-tax adjustments - - - - - - - - - - - - 505 3,135 (2,608) 3,207 Tax-effect of adjustments - - - - - - - - - - - - 85 576 (479) 589 Total adjustments after tax - - - - - - - - - - - - 420 2,559 (2,129) 2,618 Net income as adjusted (non-GAAP) $ 7,525 $ 9,243 $ 8,891 $ 5,578 $ 9,689 $ 10,367 $ 10,796 $ 12,775 $ 13,733 $ 13,589 $ 16,747 $ 18,057 $ 18,318 $ 18,927 $ 19,858 $ 21,622 Preferred stock dividends $ 1,418 $ 1,171 $ 1,184 $ 1,184 $ 1,197 $ 1,171 $ 1,184 $ 1,198 $ 1,196 $ 1,171 $ 1,185 $ 1,197 $ 1,197 $ 1,171 $ 1,184 $ 1,197 Net income available to common shareholders as adjusted (non-GAAP) $ 6,107 $ 8,072 $ 7,707 $ 4,394 $ 8,492 $ 9,196 $ 9,612 $ 11,577 $ 12,537 $ 12,418 $ 15,562 $ 16,860 $ 17,121 $ 17,756 $ 18,674 $ 20,425 Diluted earnings per share $ 0.44 $ 0.55 $ 0.53 $ 0.32 $ 0.57 $ 0.61 $ 0.63 $ 0.74 $ 0.79 $ 0.78 $ 0.96 $ 1.03 $ 1.02 $ 0.88 $ 1.08 $ 0.93 Adjustments after-tax - - - - - - - - - - - - 0.02 0.14 (0.10) 0.13 Diluted earnings per common share as adjusted (non-GAAP) $ 0.44 $ 0.55 $ 0.53 $ 0.32 $ 0.57 $ 0.61 $ 0.63 $ 0.74 $ 0.79 $ 0.78 $ 0.96 $ 1.03 $ 1.04 $ 1.02 $ 0.98 $ 1.06 Return on average assets 0.84% 1.02% 0.96% 0.56% 0.90% 0.95% 0.97% 1.14% 1.13% 1.17% 1.38% 1.41% 1.36% 1.08% 1.34% 1.13% Return on average assets as adjusted (non-GAAP)(A) 0.84% 1.02% 0.96% 0.56% 0.90% 0.95% 0.97% 1.14% 1.13% 1.17% 1.38% 1.41% 1.39% 1.25% 1.21% 1.29% Return on average common equity as adjusted (non-GAAP)(A) 7.69% 10.28% 9.44% 5.19% 9.86% 10.44% 10.53% 12.12% 12.66% 12.41% 14.70% 15.14% 14.78% 13.19% 12.53% 13.18% Return on average tangible common equity as adjusted (non-GAAP)(A) 8.19% 10.93% 10.02% 5.50% 10.44% 11.03% 11.10% 12.76% 13.29% 13.01% 15.38% 15.81% 15.41% 14.29% 13.79% 14.44% (A) Interim periods annualized.

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The exact name of the entity filing the report as specified in its charter, which is required by forms filed with the SEC.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Exchange Act

-Number 240

-Section 12

-Subsection b-2

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- Definition

The Tax Identification Number (TIN), also known as an Employer Identification Number (EIN), is a unique 9-digit value assigned by the IRS.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Exchange Act

-Number 240

-Section 12

-Subsection b-2

+ Details

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- Definition

Local phone number for entity.

+ References

No definition available.

+ Details

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- Definition

Boolean flag that is true when the Form 8-K filing is intended to satisfy the filing obligation of the registrant as pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Exchange Act

-Number 240

-Section 13e

-Subsection 4c

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Boolean flag that is true when the Form 8-K filing is intended to satisfy the filing obligation of the registrant as pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Exchange Act

-Number 240

-Section 14d

-Subsection 2b

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Name:

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- Definition

Title of a 12(b) registered security.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Exchange Act

-Number 240

-Section 12

-Subsection b

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- Definition

Name of the Exchange on which a security is registered.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Exchange Act

-Number 240

-Section 12

-Subsection d1-1

+ Details

Name:

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Namespace Prefix:

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Data Type:

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- Definition

Boolean flag that is true when the Form 8-K filing is intended to satisfy the filing obligation of the registrant as soliciting material pursuant to Rule 14a-12 under the Exchange Act.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Exchange Act

-Number 240

-Section 14a

-Subsection 12

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- Definition

Trading symbol of an instrument as listed on an exchange.

+ References

No definition available.

+ Details

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Namespace Prefix:

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Balance Type:

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- Definition

Boolean flag that is true when the Form 8-K filing is intended to satisfy the filing obligation of the registrant as written communications pursuant to Rule 425 under the Securities Act.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Securities Act

-Number 230

-Section 425

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