How are Third Coast Bancshares’ asset quality metrics trending in Q1 2026?

Nonperforming loans were $35.6 million at March 31, 2026, up from $21.5 million at December 31, 2025, mainly due to one $17.1 million loan placed on nonaccrual. The nonperforming loans ratio was 0.68% , and the allowance for credit losses stood at $51.5 million , or 0.98% of loans.

Third Coast Bancshares (NYSE: TCBX) grows assets with Keystone merger, Q1 2026 earnings

Q: How did Third Coast Bancshares, Inc. (TCBX) perform in Q1 2026?

Third Coast Bancshares generated $16.4 million in net income in Q1 2026, with basic and diluted EPS of $1.03 and $0.88 . Return on average assets was 1.08% annualized and net interest margin was 3.67% , reflecting growth but some margin compression versus Q4 2025.

Q: What happened to net interest income and margins for TCBX in Q1 2026?

Net interest income rose to $53.6 million , up 2.8% from Q4 2025 and 25.3% from Q1 2025. Net interest margin declined to 3.67% from 4.10% in Q4 2025 as loan yields fell and interest expense increased, despite strong growth in interest-earning assets.

Q: How did operating expenses and efficiency change for Third Coast Bancshares in Q1 2026?

Noninterest expense increased to $38.1 million from $32.7 million in Q4 2025, driven by $3.3 million in Keystone merger-related costs and higher compensation. The efficiency ratio rose to 66.06% , compared with 57.90% in the prior quarter, reflecting these elevated integration and personnel expenses.

Q: What are the key capital and book value metrics for TCBX after the Keystone merger?

Total shareholders’ equity reached $650.5 million at March 31, 2026. Book value per common share was $35.28 , and tangible book value per common share was $31.97 . Tangible common equity to tangible assets was 8.11% , while total common equity to total assets stood at 8.88% .

Filing Impact

(High)

Filing Sentiment

(Neutral)

Form Type

8-K

Rhea-AI Filing Summary

Third Coast Bancshares, Inc. reported first quarter 2026 results and completed its merger with Keystone Bancshares on February 1, 2026. The merger added approximately $1.0 billion in assets, $812.0 million in loans and $844.2 million in deposits.

Net income for the quarter was $16.4 million, or $1.03 basic and $0.88 diluted earnings per share, including about $3.3 million in pre-tax merger-related expenses. Return on average assets was 1.08% annualized and net interest margin was 3.67%.

Gross loans reached $5.25 billion and deposits $5.72 billion at March 31, 2026. The efficiency ratio rose to 66.06% amid higher merger and compensation costs. Asset quality remained controlled, with nonperforming loans of $35.6 million, or 0.68% of total loans, and an allowance for credit losses of $51.5 million, or 0.98% of gross loans.

Positive

Transformative Keystone merger completed: On February 1, 2026, the company closed its acquisition of Keystone Bancshares, adding approximately $1.0 billion in assets, $812.0 million in loans and $844.2 million in deposits, materially expanding its Texas franchise and balance sheet.

Negative

None.

Insights

Keystone merger drives strong balance-sheet growth, but margins and costs tightened near term.

Third Coast Bancshares closed its Keystone acquisition, adding about $1.0 billion in assets, $812.0 million in loans and $844.2 million in deposits. This pushed total assets to $6.58 billion and gross loans to $5.25 billion as of March 31, 2026.

Profitability was solid but softer than the prior quarter. Net income was $16.4 million with a 1.08% return on average assets and 3.67% net interest margin, down from 4.10% in Q4 2025. Management attributes around $3.3 million of pre-tax drag to merger-related legal, professional and personnel expenses.

Asset quality metrics remain manageable: nonperforming loans were $35.6 million, or 0.68% of total loans, and the allowance for credit losses was $51.5 million, or 0.98% of loans. The allowance increase reflects the Day 1 credit mark from Keystone. Future filings for periods after March 31, 2026 will clarify how quickly cost synergies and the larger loan book translate into improved earnings metrics.

8-K Event Classification

3 items: 2.02, 7.01, 9.01

3 items

Item 2.02 Results of Operations and Financial Condition Financial

Disclosure of earnings results, typically an earnings press release or preliminary financials.

Item 7.01 Regulation FD Disclosure Disclosure

Material non-public information disclosed under Regulation Fair Disclosure, often investor presentations or guidance.

Item 9.01 Financial Statements and Exhibits Exhibits

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

Key Figures

Net income: $16.4 million Diluted EPS: $0.88 per share Net interest income: $53.6 million +5 more

8 metrics

Net income $16.4 million Quarter ended March 31, 2026

Diluted EPS $0.88 per share Quarter ended March 31, 2026

Net interest income $53.6 million Quarter ended March 31, 2026; up 2.8% vs Q4 2025

Net interest margin 3.67% Quarter ended March 31, 2026; down from 4.10% in Q4 2025

Total assets $6.58 billion Balance at March 31, 2026

Gross loans $5.25 billion Balance at March 31, 2026; up from $4.39 billion at December 31, 2025

Total deposits $5.72 billion Balance at March 31, 2026; up 23.5% from December 31, 2025

Nonperforming loans ratio 0.68% Nonperforming loans to total loans at March 31, 2026

Key Terms

net interest margin, efficiency ratio, nonperforming loans, allowance for credit losses, +2 more

6 terms

net interest margin financial

"Net interest margin of 3.67% for the first quarter of 2026 compared to 4.10% for the fourth quarter of 2025"

Net interest margin measures how much a bank earns from lending and investing compared with what it pays for funding, expressed as a percentage of its interest-earning assets. Think of it like a grocery store’s markup: it shows the gap between buying cost and selling price per dollar of goods — here, the cost is interest paid and the sale is interest received. Investors watch it because a higher margin usually means a bank is more profitable and better at managing interest rate and credit conditions.

efficiency ratio financial

"Efficiency ratio of 66.06% for the first quarter of 2026 compared to 57.90% for the fourth quarter of 2025"

A measure of how much a company spends to produce each dollar of revenue, usually shown as operating expenses divided by revenue and expressed as a percentage. Think of it as a household’s budget: a lower percentage means more of each dollar earned stays as profit, while a higher number means costs are eating into returns. Investors use it to judge cost control and compare how efficiently companies turn revenue into earnings, especially in banks and financial firms.

nonperforming loans financial

"Nonperforming loans at March 31, 2026 were $35.6 million, compared to $21.5 million at December 31, 2025"

Nonperforming loans are loans on which borrowers have stopped making the scheduled interest or principal payments for an extended period (commonly 90 days or more) or are otherwise in serious danger of default. Think of them as IOUs that aren’t being repaid: they tie up a lender’s money, reduce future interest income, and force the lender to hold extra reserves or take losses. For investors, a rising share of nonperforming loans signals weakening credit quality, higher potential losses, and greater risk to a bank’s profitability and capital.

allowance for credit losses financial

"the allowance for credit losses of $51.5 million represented 0.98% of the $5.25 billion in gross loans outstanding"

Allowance for credit losses is a reserve set aside by a financial institution to cover potential losses from borrowers who may not repay their loans. It acts like a safety net, helping the institution prepare for loans that might turn sour. For investors, it signals how cautious the institution is about the quality of its loans and potential risks to its financial health.

provision for credit losses financial

"The provision for credit loss recorded for the first quarter of 2026 was $580,000"

Provision for credit losses is an amount set aside by a financial institution to cover potential future losses from borrowers who may not repay their loans. It acts like a safety net, helping the institution manage risks and stay financially healthy. For investors, it signals how cautious a lender is about potential loan defaults and can impact the company's profitability and financial stability.

Earnings Snapshot

Net income: $16.4 million

Q1 2026

Net income $16.4 million

Net interest income $53.6 million +25.3% vs Q1 2025

Diluted EPS $0.88 +0.10 vs Q1 2025

Return on average assets 1.08% -0.28 percentage points vs Q4 2025

Net interest margin 3.67% -0.43 percentage points vs Q4 2025

Understanding 8-K Material Events →

04/22/2026 - 04:19 PM

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): April 22, 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 April 22, 2026, Third Coast Bancshares, Inc. (the “Company”) issued a press release announcing its financial results for the quarter ended March 31, 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 March 31, 2026, on Thursday, April 23, 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 March 31, 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 April 22, 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:	April 22, 2026	By:	/s/ R. John McWhorter
			R. John McWhorter Chief Financial Officer

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 First Quarter Financial Results

Completed Successful Merger with Keystone Bancshares, Inc.

HOUSTON – April 22, 2026 – Third Coast Bancshares, Inc. (NYSE & 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 first quarter financial results.

2026 First Quarter Financial Highlights

•

Completed successful merger with Keystone Bancshares, Inc. ("Keystone") on February 1, 2026, which added approximately $812.0 million in loans, $1 billion in assets, and $844.2 million in deposits.

•

Return on average assets of 1.08% annualized for the first quarter of 2026 compared to 1.36% annualized for the fourth quarter of 2025 and 1.17% annualized for the first quarter of 2025.

•

Net interest margin of 3.67% for the first quarter of 2026 compared to 4.10% for the fourth quarter of 2025 and 3.80% for the first quarter of 2025.

•

Net income for the first quarter of 2026 totaled $16.4 million, or $1.03 and $0.88 per basic and diluted share, respectively, compared to $17.9 million, or $1.21 and $1.02 per basic and diluted share, respectively, for the fourth quarter of 2025 and $13.6 million, or $0.90 and $0.78 per basic and diluted share, respectively, for the first quarter of 2025.

•

The first quarter of 2026 included non-recurring adjustments related to the merger with Keystone that negatively impacted net income by approximately $3.3 million pre-tax.

•

Efficiency ratio of 66.06% for the first quarter of 2026 compared to 57.90% for the fourth quarter of 2025 and 61.23% for the first quarter of 2025.

•

Gross loans grew to $5.25 billion as of March 31, 2026, from $4.39 billion reported as of December 31, 2025.

•

Book value per common share and tangible book value per common share(1) increased to $35.28 and decreased to $31.97, respectively, as of March 31, 2026, compared to $33.47 and $32.12, respectively, as of December 31, 2025 and $29.92 and $28.56, respectively, as of March 31, 2025.

“Our first quarter marked an important step for Third Coast with the successful merger with Keystone. This transaction meaningfully increased our balance sheet and capabilities, and we’re already seeing strong momentum across our loan pipelines and core markets. As we move through the year, we remain focused on executing on our strategic objectives,

____________________________

(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.

building deeper relationships with clients, and translating our expanded platform into sustainable growth and shareholder value,” said Bart Caraway, Founder, Chairman, President & Chief Executive Officer of Third Coast.

Operating Results

Net Income and Earnings Per Common Share

Net income totaled $16.4 million for the first quarter of 2026, compared to $17.9 million for the fourth quarter of 2025 and $13.6 million for the first quarter of 2025. Net income available to common shareholders totaled $15.2 million for the first quarter of 2026, compared to $16.7 million for the fourth quarter of 2025 and $12.4 million for the first quarter of 2025. The quarter-over-quarter decrease from the fourth quarter of 2025 was primarily due to merger-related expenses attributing to an increase in legal and professional expenses, and an increase in salaries and employee benefits related to sign-on bonuses, retention and additional bonuses. Dividends on our Series A Convertible Non-Cumulative Preferred Stock (“Series A Preferred Stock”) totaled $1.2 million for each of the quarters ended March 31, 2026, December 31, 2025 and March 31, 2025.

Basic and diluted earnings per common share were $1.03 per share and $0.88 per share, respectively, in the first quarter of 2026, compared to $1.21 per share and $1.02 per share, respectively, in the fourth quarter of 2025 and $0.90 per share and $0.78 per share, respectively, in the first quarter of 2025.

Net Interest Margin and Net Interest Income

The net interest margin for the first quarter of 2026 was 3.67%, compared to 4.10% for the fourth quarter of 2025 and 3.80% for the first quarter of 2025. The yield on loans for the first quarter of 2026 was 7.01%, compared to 7.52% for the fourth quarter of 2025 and 7.45% for the first quarter of 2025. The cost of interest-bearing deposits for the first quarter of 2026 was 3.53%, compared to 3.73% for the fourth quarter of 2025 and 4.02% for the first quarter of 2025.

Net interest income totaled $53.6 million for the first quarter of 2026, an increase of 2.8% from $52.2 million for the fourth quarter of 2025 and an increase of 25.3% from $42.8 million for the first quarter of 2025. Interest income totaled $97.4 million for the first quarter of 2026, an increase of 5.7% from $92.1 million for the fourth quarter of 2025 and an increase of 20.6% from $80.8 million for the first quarter of 2025. The quarter-over-quarter increase from the fourth quarter of 2025 in interest income primarily resulted from an increase in loans, slightly offset by a $1.0 million reversal of interest income on a loan placed on nonaccrual and a decrease in loan yields. Interest expense was $43.7 million for the first quarter of 2026, an increase of $3.8 million, or 9.6%, from $39.9 million for the fourth quarter of 2025 and an increase of $5.8 million, or 15.2%, from $38.0 million for the first quarter of 2025, primarily resulting from an increase in interest-bearing demand deposits slightly offset by a reduction in rates paid on interest-bearing demand deposits.

Noninterest Income and Noninterest Expense

Noninterest income totaled $4.0 million for the first quarter of 2026, compared to $4.3 million for the fourth quarter of 2025 and $3.1 million for the first quarter of 2025. The quarter-over-quarter decrease from the fourth quarter of 2025 in noninterest income was primarily due to a decrease in non-margin loan fees during the first quarter of 2026.

Noninterest expense increased to $38.1 million for the first quarter of 2026, compared to $32.7 million for the fourth quarter of 2025 and $28.1 million for the first quarter of 2025. The quarter-over-quarter increase from the fourth quarter of 2025 in noninterest expense was primarily due to merger-related expenses. During the first quarter of 2026, the Company recorded $3.3 million in Keystone merger-related noninterest expenses primarily attributable to $1.6 million in legal and professional expenses and $1.3 million in salaries and employee benefits. Additionally, the Company recorded $644,000 in salaries and employee benefits attributable to sign-on bonuses and additional discretionary bonuses during the first quarter of 2026. At March 31, 2026, the number of employees increased to 514, compared to 412 at December 31, 2025 primarily due to the Keystone merger.

The efficiency ratio was 66.06% for the first quarter of 2026, compared to 57.90% for the fourth quarter of 2025 and 61.23% for the first quarter of 2025.

Balance Sheet Highlights

Loan Portfolio and Composition

For the quarter ended March 31, 2026, gross loans increased to $5.25 billion, an increase of $856.7 million, or 19.5%, from $4.39 billion as of December 31, 2025, and an increase of $1.26 billion, or 31.7%, from $3.99 billion as of March 31, 2025. The increase in gross loans was impacted by the mid-quarter Keystone merger. Commercial and industrial loans and real estate loans accounted for the majority of the loan growth for the first quarter of 2026, with commercial and industrial loans increasing $276.2 million and real estate loans increasing $644.2 million from the fourth quarter of 2025, partially offset by municipal and other loans decreasing $64.4 million from the fourth quarter of 2025.

Asset Quality

Nonperforming loans at March 31, 2026 were $35.6 million, compared to $21.5 million at December 31, 2025 and $18.6 million at March 31, 2025. The increase in nonperforming loans during the first quarter of 2026 was primarily due to one loan for approximately $17.1 million that was placed on nonaccrual partially offset by a $5.0 million decline in loans over 90 days past due and still accruing. As of March 31, 2026, the nonperforming loans to total loans ratio was 0.68%, compared to 0.49% as of December 31, 2025 and 0.47% as of March 31, 2025.

The provision for credit loss recorded for the first quarter of 2026 was $580,000, and the allowance for credit losses of $51.5 million represented 0.98% of the $5.25 billion in gross loans outstanding as of March 31, 2026. The provision for credit loss recorded for the fourth quarter of 2025 was $2.2 million, and the allowance for credit losses of $43.9 million represented 1.00% of the $4.39 billion in gross loans outstanding as of December 31, 2025. The increase in the allowance for credit loss in the first quarter of 2026 compared to the fourth quarter of 2025 was primarily attributable to Day 1 allowance for credit losses related to the Keystone merger.

The Company recorded net recoveries of $4,000 and net charge-offs of $398,000 for the three months ended March 31, 2026 and March 31, 2025, respectively.

Deposits and Composition

Deposits totaled $5.72 billion as of March 31, 2026, an increase of 23.5% from $4.63 billion as of December 31, 2025, and an increase of 34.5% from $4.25 billion as of March 31, 2025. The increase in total deposits was impacted by the mid-quarter Keystone merger. Noninterest-bearing demand deposits increased from $495.0 million as of December 31, 2025, to $577.2 million as of March 31, 2026 and represented 10.1% and 10.7% of total deposits as of March 31, 2026 and December 31, 2025, respectively. As of March 31, 2026, interest-bearing demand deposits increased $912.1 million, or 27.1%, time deposits increased $90.0 million, or 12.0%, and savings accounts increased $3.8 million, or 17.6%, respectively, from December 31, 2025.

The average cost of deposits was 3.17% for the first quarter of 2026, representing a 17-basis point decrease from the fourth quarter of 2025 and a 44-basis point decrease from the first quarter of 2025. The decreases were primarily due to the reduction in rates paid on interest-bearing demand deposits.

Earnings Conference Call

Third Coast has scheduled a conference call to discuss its 2026 first quarter results, which will be broadcast live over the Internet, on Thursday, April 23, 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 April 30, 2026, and may be accessed by dialing 201-612-7415 and using passcode 13757903#. 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 21 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, 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 risk that the benefits from the transaction between Third Coast and Keystone 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 Keystone 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; the possibility that the completion of the transaction may be more expensive than anticipated, including as a result of unexpected factors or events; reputational risk and potential adverse reactions of Third Coast’s or Keystone’s customers, suppliers, employees or other business partners, including those resulting from the completion of the transaction; the dilution caused by Third Coast’s issuance of additional shares of its common stock in connection with the transaction; and other factors that may affect future results of Third Coast and Keystone 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 and Return on Average Tangible Common Equity, 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)	March 31			December 31			September 30			June 30			March 31

ASSETS
Cash and cash equivalents:
Cash and due from banks	$	425,174		$	175,202		$	116,383		$	113,141		$	218,990
Federal funds sold		6,133			6,027			6,629			5,815			110,379
Total cash and cash equivalents		431,307			181,229			123,012			118,956			329,369

Interest bearing time deposits in other banks		270			267			265			262			359
Investment securities available-for-sale		435,846			383,192			376,719			355,753			397,442
Investment securities held to maturity		191,980			192,008			206,037			206,065			-
Loans held for investment		5,251,458			4,394,751			4,165,116			4,079,736			3,988,039
Less: allowance for credit losses		(51,455	)		(43,949	)		(42,563	)		(40,035	)		(40,456	)
Loans held for investment, net		5,200,003			4,350,802			4,122,553			4,039,701			3,947,583
Accrued interest receivable		31,385			29,236			29,537			27,736			26,752
Premises and equipment, net		40,558			24,789			24,718			24,908			25,669
Other real estate owned		8,388			8,388			8,388			8,580			8,752
Bank-owned life insurance		77,107			76,357			75,547			74,761			74,018
Non-marketable securities, at cost		21,759			16,424			26,157			18,761			15,994
Deferred tax asset, net		7,493			6,450			6,989			8,646			9,176
Derivative assets		2,350			2,544			2,803			3,059			3,052
Right-of-use assets - operating leases		17,615			17,066			17,677			18,769			19,370
Goodwill and other intangible assets		54,883			18,680			18,720			18,761			18,801
Other assets		61,129			33,327			22,686			19,053			20,652
Total assets	$	6,582,073		$	5,340,759		$	5,061,808		$	4,943,771		$	4,896,989

LIABILITIES
Deposits:
Noninterest bearing	$	577,217		$	495,000		$	450,013		$	440,964		$	448,542
Interest bearing		5,137,860			4,131,888			3,922,728			3,839,905			3,800,001
Total deposits		5,715,077			4,626,888			4,372,741			4,280,869			4,248,543

Accrued interest payable		7,205			5,957			7,153			6,691			7,044
Derivative liabilities		3,517			3,142			3,521			3,779			3,527
Lease liability - operating leases		18,676			18,130			18,735			19,835			20,425
Other liabilities		48,177			36,775			32,040			24,745			25,979
Line of credit - Senior Debt		57,875			37,875			32,875			30,875			30,875
Note payable - Subordinated Debentures, net		81,016			80,965			80,913			80,862			80,810
Total liabilities		5,931,543			4,809,732			4,547,978			4,447,656			4,417,203

SHAREHOLDERS' EQUITY
Series A Convertible Non-Cumulative Preferred Stock		69			69			69			69			69
Series B Convertible Perpetual Preferred Stock		-			-			-			-			-
Common stock		16,641			13,970			13,958			13,930			13,904
Common stock - non-voting		-			-			-			-			-
Additional paid-in capital		428,815			323,929			323,491			322,972			322,456
Retained earnings		198,435			183,238			166,537			149,677			134,115
Accumulated other comprehensive income		7,669			10,920			10,874			10,566			10,341
Treasury stock, at cost		(1,099	)		(1,099	)		(1,099	)		(1,099	)		(1,099	)
Total shareholders' equity		650,530			531,027			513,830			496,115			479,786
Total liabilities and shareholders' equity	$	6,582,073		$	5,340,759		$	5,061,808		$	4,943,771		$	4,896,989

Third Coast Bancshares, Inc. and Subsidiary

Financial Highlights

(unaudited)


	Three Months Ended
	2026			2025
(Dollars in thousands, except per share data)	March 31			December 31			September 30		June 30			March 31

INTEREST INCOME:
Loans, including fees	$	85,893		$	81,368		$	82,054	$	79,706		$	73,087
Investment securities available-for-sale		6,107			6,464			6,289		5,505			5,693
Investment securities held-to-maturity		2,398			2,681			2,882		1,607			-
Federal funds sold and other		2,988			1,586			1,278		1,844			1,986
Total interest income		97,386			92,099			92,503		88,662			80,766

INTEREST EXPENSE:
Deposit accounts		41,484			37,530			39,030		37,535			36,226
FHLB advances and other borrowings		2,257			2,372			2,624		1,753			1,743
Total interest expense		43,741			39,902			41,654		39,288			37,969

Net interest income		53,645			52,197			50,849		49,374			42,797

Provision for credit losses		580			2,245			2,763		2,130			450

Net interest income after credit loss expense		53,065			49,952			48,086		47,244			42,347

NONINTEREST INCOME:
Service charges and fees		3,175			3,518			2,839		2,125			2,277
Earnings on bank-owned life insurance		750			811			786		743			677
Loss on sale of investment securities available-for-sale		(11	)		(272	)		-		(110	)		(228	)
Gain on sale of SBA loans		-			-			-		44			30
Other		119			204			10		(152	)		351
Total noninterest income		4,033			4,261			3,635		2,650			3,107

NONINTEREST EXPENSE:
Salaries and employee benefits		24,808			21,109			19,560		18,179			18,341
Occupancy and equipment expense		3,349			2,845			2,861		2,783			2,834
Legal and professional		3,221			2,850			1,254		1,927			1,431
Data processing and network expense		1,414			1,087			1,203		1,162			1,120
Regulatory assessments		1,210			1,172			1,152		1,203			1,306
Advertising and marketing		639			733			499		503			409
Software purchases and maintenance		1,419			1,067			1,094		1,149			1,259
Loan operations and other real estate owned expense		537			397			29		439			269
Telephone and communications		144			126			134		115			175
Other		1,362			1,305			1,106		1,386			964
Total noninterest expense		38,103			32,691			28,892		28,846			28,108

NET INCOME BEFORE INCOME TAX EXPENSE		18,995			21,522			22,829		21,048			17,346

Income tax expense		2,627			3,624			4,772		4,301			3,757

NET INCOME		16,368			17,898			18,057		16,747			13,589

Preferred stock dividends declared		1,171			1,197			1,197		1,185			1,171

NET INCOME AVAILABLE TO COMMON SHAREHOLDERS	$	15,197		$	16,701		$	16,860	$	15,562		$	12,418

EARNINGS PER COMMON SHARE:
Basic earnings per share	$	1.03		$	1.21		$	1.22	$	1.12		$	0.90
Diluted earnings per share	$	0.88		$	1.02		$	1.03	$	0.96		$	0.78

Third Coast Bancshares, Inc. and Subsidiary

Financial Highlights

(unaudited)


	Three Months Ended
	2026			2025
(Dollars in thousands, except share and per share data)	March 31			December 31			September 30			June 30			March 31

Earnings per common share, basic	$	1.03		$	1.21		$	1.22		$	1.12		$	0.90
Earnings per common share, diluted	$	0.88		$	1.02		$	1.03		$	0.96		$	0.78
Dividends on common stock	$	-		$	-		$	-		$	-		$	-
Dividends on Series A Convertible Non-Cumulative Preferred Stock	$	16.88		$	17.25		$	17.25		$	17.06		$	16.88

Return on average assets (A)		1.08	%		1.36	%		1.41	%		1.38	%		1.17	%
Return on average common equity (A)		11.29	%		14.42	%		15.14	%		14.70	%		12.41	%
Return on average tangible common equity (A) (B)		12.23	%		15.03	%		15.81	%		15.38	%		13.01	%
Net interest margin (A) (C)		3.67	%		4.10	%		4.10	%		4.22	%		3.80	%
Efficiency ratio (D)		66.06	%		57.90	%		53.03	%		55.45	%		61.23	%

Capital Ratios
Third Coast Bancshares, Inc. (consolidated):
Total common equity to total assets		8.88	%		8.70	%		8.84	%		8.70	%		8.45	%
Tangible common equity to tangible assets (B)		8.11	%		8.38	%		8.51	%		8.35	%		8.09	%
Estimated Common equity tier 1 (to risk weighted assets)		8.84	%		8.65	%		8.85	%		8.75	%		8.70	%
Estimated Tier 1 capital (to risk weighted assets)		9.96	%		9.97	%		10.25	%		10.20	%		10.19	%
Estimated Total capital (to risk weighted assets)		12.13	%		12.48	%		12.90	%		12.87	%		12.97	%
Estimated Tier 1 capital (to average assets)		9.65	%		9.65	%		9.55	%		9.65	%		9.58	%

Third Coast Bank:
Estimated Common equity tier 1 (to risk weighted assets)		12.23	%		12.23	%		12.59	%		12.56	%		12.69	%
Estimated Tier 1 capital (to risk weighted assets)		12.23	%		12.23	%		12.59	%		12.56	%		12.69	%
Estimated Total capital (to risk weighted assets)		13.02	%		13.14	%		13.53	%		13.46	%		13.63	%
Estimated Tier 1 capital (to average assets)		11.84	%		11.84	%		11.75	%		11.89	%		11.93	%

Other Data
Weighted average common shares:
Basic		14,814,661			13,889,497			13,860,149			13,836,830			13,776,998
Diluted		18,560,056			17,552,204			17,524,288			17,391,128			17,440,826
Period end common shares outstanding		16,562,268			13,891,055			13,879,099			13,851,581			13,825,286
Book value per common share	$	35.28		$	33.47		$	32.25		$	31.04		$	29.92
Tangible book value per common share (B)	$	31.97		$	32.12		$	30.91		$	29.69		$	28.56

___________

(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
	March 31, 2026						December 31, 2025						March 31, 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	$	4,972,780		$	85,893	7.01%	$	4,294,376		$	81,368	7.52%	$	3,979,859		$	73,087	7.45%
Investment securities available-for-sale		402,372			6,107	6.16%		399,694			6,464	6.42%		398,115			5,693	5.80%
Investment securities held-to-maturity		191,998			2,398	5.07%		196,309			2,681	5.42%		—			—		—
Federal funds sold and other interest-earning assets		364,681			2,988	3.32%		164,928			1,586	3.82%		186,893			1,986	4.31%
Total interest-earning assets		5,931,831			97,386	6.66%		5,055,307			92,099	7.23%		4,564,867			80,766	7.18%
Less: allowance for loan losses		(48,822	)					(42,984	)					(40,595	)
Total interest-earning assets, net of allowance		5,883,009						5,012,323						4,524,272
Noninterest-earning assets		270,433						209,215						198,522
Total assets	$	6,153,442					$	5,221,538					$	4,722,794

Liabilities and Shareholders’ Equity
Interest-bearing liabilities:
Interest-bearing deposits	$	4,761,641		$	41,484	3.53%	$	3,989,201		$	37,530	3.73%	$	3,652,006		$	36,226	4.02%
Note payable and line of credit		130,737			1,944	6.03%		118,807			1,801	6.01%		111,661			1,713	6.22%
FHLB advances		40,155			313	3.16%		56,483			571	4.01%		2,551			30	4.77%
Total interest-bearing liabilities		4,932,533			43,741	3.60%		4,164,491			39,902	3.80%		3,766,218			37,969	4.09%
Noninterest-bearing deposits		549,111						477,198						423,780
Other liabilities		59,628						54,090						60,755
Total liabilities		5,541,272						4,695,779						4,250,753
Shareholders’ equity		612,170						525,759						472,041
Total liabilities and shareholders’ equity	$	6,153,442					$	5,221,538					$	4,722,794
Net interest income				$	53,645					$	52,197					$	42,797
Net interest spread (1)						3.06%						3.43%						3.09%
Net interest margin (2)						3.67%						4.10%						3.80%

___________

(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)	March 31			December 31			September 30			June 30			March 31

Period-end Loan Portfolio:
Real estate loans:
Commercial real estate:
Non-farm non-residential owner occupied	$	572,037		$	434,715		$	408,996		$	423,959		$	420,902
Non-farm non-residential non-owner occupied		929,598			710,401			687,924			666,840			633,227
Residential		543,804			333,419			334,583			323,898			335,285
Construction, development & other		894,767			823,353			826,566			784,364			846,166
Farmland		32,379			26,485			25,549			28,013			30,783
Commercial & industrial		2,182,864			1,906,616			1,772,045			1,724,583			1,605,243
Consumer		2,265			1,576			1,291			1,206			1,443
Municipal and other		93,744			158,186			108,162			126,873			114,990
Total loans	$	5,251,458		$	4,394,751		$	4,165,116		$	4,079,736		$	3,988,039

Asset Quality:
Nonaccrual loans	$	29,222		$	10,120		$	10,723		$	13,358		$	17,066
Loans > 90 days and still accruing		6,396			11,360			11,016			6,755			1,503
Total nonperforming loans		35,618			21,480			21,739			20,113			18,569
Other real estate owned		8,388			8,388			8,388			8,580			8,752
Total nonperforming assets	$	44,006		$	29,868		$	30,127		$	28,693		$	27,321

QTD Net (recoveries) charge-offs	$	(4	)	$	844		$	(17	)	$	2,376		$	398

Nonaccrual loans:
Real estate loans:
Commercial real estate:
Non-farm non-residential owner occupied	$	618		$	1,235		$	1,237		$	2,191		$	3,100
Non-farm non-residential non-owner occupied		17,140			99			111			111			-
Residential		374			387			214			637			2,616
Construction, development & other		603			-			6			344			358
Commercial & industrial		10,487			8,399			9,155			10,075			10,992
Total nonaccrual loans	$	29,222		$	10,120		$	10,723		$	13,358		$	17,066

Asset Quality Ratios:
Nonperforming assets to total assets		0.67	%		0.56	%		0.60	%		0.58	%		0.56	%
Nonperforming loans to total loans		0.68	%		0.49	%		0.52	%		0.49	%		0.47	%
Allowance for credit losses to total loans		0.98	%		1.00	%		1.02	%		0.98	%		1.01	%
QTD Net (recoveries) charge-offs to average loans (annualized)		(0.00	%)		0.08	%		(0.00	%)		0.24	%		0.04	%

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, and Return on Average Tangible Common Equity 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 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.

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


	Three Months Ended
	2026			2025
(Dollars in thousands, except share and per share data)	March 31			December 31			September 30			June 30			March 31

Tangible Common Equity:
Total shareholders' equity	$	650,530		$	531,027		$	513,830		$	496,115		$	479,786
Less: Preferred stock including additional paid in capital		66,160			66,160			66,160			66,160			66,160
Total common equity		584,370			464,867			447,670			429,955			413,626
Less: Goodwill and core deposit intangibles, net		54,883			18,680			18,720			18,761			18,801
Tangible common equity	$	529,487		$	446,187		$	428,950		$	411,194		$	394,825

Common shares outstanding at end of period		16,562,268			13,891,055			13,879,099			13,851,581			13,825,286

Book Value Per Common Share	$	35.28		$	33.47		$	32.25		$	31.04		$	29.92
Tangible Book Value Per Common Share	$	31.97		$	32.12		$	30.91		$	29.69		$	28.56


Tangible Assets:
Total assets	$	6,582,073		$	5,340,759		$	5,061,808		$	4,943,771		$	4,896,989
Adjustments: Goodwill and core deposit intangibles, net		54,883			18,680			18,720			18,761			18,801
Tangible assets	$	6,527,190		$	5,322,079		$	5,043,088		$	4,925,010		$	4,878,188

Total Common Equity to Total Assets		8.88	%		8.70	%		8.84	%		8.70	%		8.45	%
Tangible Common Equity to Tangible Assets		8.11	%		8.38	%		8.51	%		8.35	%		8.09	%


Average Tangible Common Equity:
Average shareholders' equity	$	612,170		$	525,759		$	508,034		$	490,741		$	472,041
Less: Average preferred stock including additional paid in capital		66,160			66,160			66,160			66,160			66,160
Average common equity		546,010			459,599			441,874			424,581			405,881
Less: Average goodwill and core deposit intangibles, net		42,115			18,705			18,746			18,784			18,826
Average tangible common equity	$	503,895		$	440,894		$	423,128		$	405,797		$	387,055

Net Income	$	16,368		$	17,898		$	18,057		$	16,747		$	13,589
Less: Dividends declared on preferred stock		1,171			1,197			1,197			1,185			1,171
Net Income Available to Common Shareholders	$	15,197		$	16,701		$	16,860		$	15,562		$	12,418

Return on Average Common Equity(A)		11.29	%		14.42	%		15.14	%		14.70	%		12.41	%
Return on Average Tangible Common Equity(A)		12.23	%		15.03	%		15.81	%		15.38	%		13.01	%

___________

(A) Interim periods annualized.

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, 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 between Third Coast and Keystone Bancshares, Inc (“Keystone”) 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 Keystone 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; the possibility that the completion of the transaction may be more expensive than anticipated, including as a result of unexpected factors or events; reputational risk and potential adverse reactions of Third Coast’s or Keystone’s 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; and other factors that may affect future results of Third Coast and Keystone 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. 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 and 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. 

03 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.

04 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.

05 FRANCHISE OVERVIEW  FINANCIAL HIGHLIGHTS  Note: Greater Houston market refers to the Houston-The Woodlands-Sugar Land MSA, the Beaumont-Port Arthur MSA and surrounding counties; Dallas-Fort Worth market refers to the Dallas-Fort Worth-Arlington MSA and surrounding counties; Austin-San Antonio market refers to the San Antonio-New Braunfels MSA, the Austin-Round Rock-Georgetown MSA and surrounding counties (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 21, 22, and 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 3/31/2026 Total Assets $2,499 $3,773 $4,396 $4,942 $5,341 $6,582 Total Loans $2,069 $3,108 $3,639 $3,966 $4,395 $5,251 Total Deposits $2,141 $3,236 $3,803 $4,310 $4,627 $5,715 Loans/ Deposits 96.6% 96.0% 95.7% 92.0% 95.0% 91.9% Tangible Book Value per Common Share(2) $20.87 $21.90 $24.02 $27.29 $32.12 $31.97 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 3/31/2026 Return on Average Assets 0.55% 0.58% 0.86% 1.05% 1.33% 1.08% Return on Average Tangible Common Equity (2) 7.55% 6.00% 9.19% 12.09% 14.21% 12.23% 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% 3.17% Net Interest Margin 4.65% 3.82% 3.73% 3.67% 4.06% 3.67% Efficiency Ratio(1) 74.43% 71.40% 67.55% 60.88% 56.75% 66.06% FYE FYE FYE FYE FYE YTD Asset Quality 12/31/2021 12/31/2022 12/31/2023 12/31/2024 12/31/2025 3/31/2026 NPAs to Total Assets 0.69% 0.32% 0.39% 0.58% 0.56% 0.67% 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 21 branches located throughout Austin, Beaumont-Port Arthur, Dallas-Fort Worth, Greater Houston, and San Antonio markets. Headquarters Branches (20)

06 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.

07 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 TCCC Third Coast Commercial Capital was formed to provide working capital solutions for small to medium-sized businesses. Accounts Receivable Lending Factoring Ledgered Line of Credit Asset based Lines of Credit 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, Mortgage, and TCCC lines of business do not individually make up a material portion of the total loan portfolio.

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

09 PROFITABILITY  (1) Refer to the calculation of non-GAAP financial measures on page 21 and 22. NET INCOME - QUARTERLY TANGIBLE BOOK VALUE PER COMMON SHARE (1) DILUTED E.P.S. - QUARTERLY $ in Thousands

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

11 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)

12 CAPITAL RATIOS  Top graph assumes Preferred Stock is converted to Common Stock. Refer to the calculation of non-GAAP financial measures on page 22. TANGIBLE COMMON EQUITY TO TANGIBLE ASSETS (1) (2) TOTAL RISK BASED CAPITAL RATIO - BANK TOTAL COMMON EQUITY TO TOTAL ASSETS

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

14 LOAN COMPOSITION  A well-balanced, stable loan portfolio. $4.4 B in Loans | As of 12.31.2025 Yield 7.68% | NIM 4.06% $5.3 B in Loans | As of 03.31.2026 Yield 7.01% | NIM 3.67%

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

16 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   

17 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

18 STRATEGIC INITIATIVES Evaluate opportunities within our existing metropolitan markets– Greater Houston, Dallas-Fort Worth, Austin, and San Antonio MSAs—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

19 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.

20 TCBX BOARD OF DIRECTORS NAME AGE AS OF 3/31/2026 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 64 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 59 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 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 47 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 50 2026 Prior board member of Keystone Bancshares which merged with Third Coast. Entrepreneur and senior executive with accounting and management experience. Shelton J. McDonald 46 2019 Licensed Attorney since 2005. President and CEO of Joslin Construction Texas, LLC & Affiliated Companies. Prior experience at Houston-area law firms in business law. 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 44 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. Jeffrey A. Wilkinson 59 2026 2018 founder of Keystone Bancshares which merged with Third Coast. Experience includes senior executive roles in the financial services industry and founder of other community banks such as Pioneer Bank. 

21 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 Common Share $ 22.31 $ 23.32 $ 25.41 $ 28.65 $ 33.47 Tangible Book Value Per Common 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%

22 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 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 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 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 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 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 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 Book Value Per Common 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 Tangible Book Value Per Common 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 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 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 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 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% 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% 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 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%

23 Non-GAAP FINANCIAL MEASURES  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 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 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 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 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 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 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 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 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% 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% (A) Interim periods annualized. 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

Source: View Original Filing on SEC EDGAR

FAQ

How did Third Coast Bancshares, Inc. (TCBX) perform in Q1 2026?

Third Coast Bancshares generated $16.4 million in net income in Q1 2026, with basic and diluted EPS of $1.03 and $0.88. Return on average assets was 1.08% annualized and net interest margin was 3.67%, reflecting growth but some margin compression versus Q4 2025.

What impact did the Keystone Bancshares merger have on TCBX’s balance sheet?

The Keystone merger, completed February 1, 2026, added about $812.0 million in loans, $1.0 billion in assets and $844.2 million in deposits. As a result, total assets reached $6.58 billion, loans $5.25 billion and deposits $5.72 billion at March 31, 2026.

What happened to net interest income and margins for TCBX in Q1 2026?

Net interest income rose to $53.6 million, up 2.8% from Q4 2025 and 25.3% from Q1 2025. Net interest margin declined to 3.67% from 4.10% in Q4 2025 as loan yields fell and interest expense increased, despite strong growth in interest-earning assets.

How did operating expenses and efficiency change for Third Coast Bancshares in Q1 2026?

Noninterest expense increased to $38.1 million from $32.7 million in Q4 2025, driven by $3.3 million in Keystone merger-related costs and higher compensation. The efficiency ratio rose to 66.06%, compared with 57.90% in the prior quarter, reflecting these elevated integration and personnel expenses.

What are the key capital and book value metrics for TCBX after the Keystone merger?

Total shareholders’ equity reached $650.5 million at March 31, 2026. Book value per common share was $35.28, and tangible book value per common share was $31.97. Tangible common equity to tangible assets was 8.11%, while total common equity to total assets stood at 8.88%.

Filing Exhibits & Attachments

3 documents

Third Coast Bancshares (NYSE: TCBX) grows assets with Keystone merger, Q1 2026 earnings

Rhea-AI Filing Summary

Positive

Negative

Insights

8-K Event Classification

Key Figures

Key Terms

Earnings Snapshot

FORM 8-K

Item 2.02 Results of Operations and Financial Condition.

Item 7.01 Regulation FD Disclosure.

Item 9.01 Financial Statements and Exhibits.

FAQ

How did Third Coast Bancshares, Inc. (TCBX) perform in Q1 2026?

What impact did the Keystone Bancshares merger have on TCBX’s balance sheet?

What happened to net interest income and margins for TCBX in Q1 2026?

How did operating expenses and efficiency change for Third Coast Bancshares in Q1 2026?

What are the key capital and book value metrics for TCBX after the Keystone merger?

Filing Exhibits & Attachments

Press Releases

Other Documents

Third Coast Bancshares (NYSE: TCBX) grows assets with Keystone merger, Q1 2026 earnings

Rhea-AI Filing Summary

Positive

Negative

Insights

Banking sector analyst neutral

8-K Event Classification

Key Figures

Key Terms

Earnings Snapshot

FORM 8-K

Item 2.02 Results of Operations and Financial Condition.

Item 7.01 Regulation FD Disclosure.

Item 9.01 Financial Statements and Exhibits.

FAQ

How did Third Coast Bancshares, Inc. (TCBX) perform in Q1 2026?

What impact did the Keystone Bancshares merger have on TCBX’s balance sheet?

How are Third Coast Bancshares’ asset quality metrics trending in Q1 2026?

What happened to net interest income and margins for TCBX in Q1 2026?

How did operating expenses and efficiency change for Third Coast Bancshares in Q1 2026?

What are the key capital and book value metrics for TCBX after the Keystone merger?

Filing Exhibits & Attachments

Press Releases

Other Documents