FOR IMMEDIATE RELEASE

Third Coast Bancshares, Inc. Reports

2025 Third Quarter Financial Results

Record EPS of $1.22 and Diluted EPS of $1.03 in Latest Quarterly Results

HOUSTON – October 22, 2025 – 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 2025 third quarter financial results.

Financial Highlights

Bart Caraway, Founder, Chairman, President & CEO of Third Coast, said, “This was a defining quarter for TCBX, showcasing our team's relentless focus through the Company's outstanding achievements and financial performance. The recent transfer of our stock to both the New York Stock Exchange and NYSE Texas signifies a strategic transition designed to boost market visibility and offer shareholders increased liquidity. Our total assets, loans, and deposits grew steadily, a true testament to our relationship-banking strategy. By optimizing operating leverage, we not only increased interest and non-interest income but also maintained stable expenses. Our unwavering commitment to delivering exceptional value is highlighted by our record-breaking earnings per

share and enhanced returns on average assets. The results of this quarter vibrantly demonstrate the long-standing commitment and passion of the entire TCBX team.”

Operating Results

Net Income and Earnings Per Share

Net income totaled $18.1 million for the third quarter of 2025, compared to $16.7 million for the second quarter of 2025 and $12.8 million for the third quarter of 2024. Net income available to common shareholders totaled $16.9 million for the third quarter of 2025, compared to $15.6 million for the second quarter of 2025 and $11.6 million for the third quarter of 2024. The quarter-over-quarter increase was primarily due to an increase in net interest income and an increase in non-margin loan fees, partially offset by an increase in provision for credit losses. 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, 2025 and June 30, 2025.

Basic and diluted earnings per share were $1.22 per share and $1.03 per share, respectively, in the third quarter of 2025, compared to $1.12 per share and $0.96 per share, respectively, in the second quarter of 2025 and $0.85 per share and $0.74 per share, respectively, in the third quarter of 2024.

Net Interest Margin and Net Interest Income

The net interest margin for the third quarter of 2025 was 4.10%, compared to 4.22% for the second quarter of 2025 and 3.73% for the third quarter of 2024. The yield on loans for the third quarter of 2025 was 7.79%, compared to 7.95% for the second quarter of 2025 and 7.90% for the third quarter of 2024. The cost of interest-bearing deposits for the third quarter of 2025 was 3.98%, compared to 4.00% for the second quarter of 2025 and 4.75% for the third quarter of 2024.

Net interest income totaled $50.8 million for the third quarter of 2025, an increase of 3.0% from $49.4 million for the second quarter of 2025 and an increase of 25.9% from $40.4 million for the third quarter of 2024. Interest income totaled $92.5 million for the third quarter of 2025, an increase of 4.3% from $88.7 million for the second quarter of 2025 and an increase of 11.8% from $82.7 million for the third quarter of 2024. The quarter-over-quarter increase in net interest income primarily resulted from an increase in loans and the purchase of investment securities. Interest expense was $41.7 million for the third quarter of 2025, an increase of $2.4 million, or 6.0%, from $39.3 million for the second quarter of 2025 and a decrease of $682,000, or 1.6%, from $42.3 million for the third quarter of 2024, primarily resulting from an increase in interest-bearing deposits.

Noninterest Income and Noninterest Expense

Noninterest income totaled $3.6 million for the third quarter of 2025, compared to $2.7 million for the second quarter of 2025 and $2.5 million for the third quarter of 2024. The increase in noninterest income was primarily due to an increase in loan fees during the third quarter of 2025.

Noninterest expense increased to $28.9 million for the third quarter of 2025, compared to $28.8 million for the second quarter of 2025 and $25.6 million for the third quarter of 2024. The quarter-over-quarter increase in noninterest expense was primarily due to an increase in salaries and employee benefits, offset by a decrease in legal and professional expenses and a decrease in loan operations and other real estate owned expenses compared to the second quarter of 2025. At September 30, 2025, the number of employees was 398, compared to 388 at June 30, 2025.

The efficiency ratio was 53.03% for the third quarter of 2025, compared to 55.45% for the second quarter of 2025 and 59.57% for the third quarter of 2024.

Balance Sheet Highlights

Loan Portfolio and Composition

For the quarter ended September 30, 2025, gross loans increased to $4.17 billion, an increase of $85.4 million, or 2.1%, from $4.08 billion as of June 30, 2025, and an increase of $275.3 million, or 7.1%, from $3.89 billion as of September 30, 2024. Commercial and industrial loans and real estate loans accounted for the majority of the loan growth for the third quarter of 2025, offset by slight decreases in municipal and other loans from the second quarter of 2025.

Asset Quality

Nonperforming loans at September 30, 2025 were $21.7 million, compared to $20.1 million at June 30, 2025 and $24.0 million at September 30, 2024. As of September 30, 2025, the nonperforming loans to total loans ratio was 0.52%, compared to 0.49% as of June 30, 2025 and 0.62% as of September 30, 2024. The increase in nonperforming loans during the third quarter of 2025 was due to an increase in loans greater than 90 days past due and still accruing which increased by approximately $4.3 million, primarily due to four borrowers totaling approximately $3.9 million. Of the four borrowers, one totaling $1.1 million has a 75% SBA guaranty, two totaling $2.4 million are well secured and in the process of renewal, and one is a mortgage loan that is in modification. This increase was partially offset by a decline in nonaccrual loans of $2.6 million, which was primarily attributed to $2.0 million in payoffs and paydowns, the placement of a $337,000 loan placed back on accrual, and a $233,000 foreclosure.

The provision for credit loss recorded for the third quarter of 2025 was $2.8 million, and the allowance for credit losses of $42.6 million represented 1.02% of the $4.17 billion in gross loans outstanding as of September 30, 2025. The provision for credit loss recorded for the second quarter of 2025 was $2.1 million, and the allowance for credit losses of $40.0 million represented 0.98% of the $4.08 billion in gross loans outstanding as of June 30, 2025.

The Company recorded net recoveries of $17,000 and $57,000 for the three months ended September 30, 2025 and September 30, 2024, respectively.

Deposits and Composition

Deposits totaled $4.37 billion as of September 30, 2025, an increase of 2.1% from $4.28 billion as of June 30, 2025, and an increase of 9.5% from $3.99 billion as of September 30, 2024. Noninterest-bearing demand deposits increased from $441.0 million as of June 30, 2025, to $450.0 million as of September 30, 2025 and represented 10.3% of total deposits as of both September 30, 2025 and June 30, 2025. As of September 30, 2025, interest-bearing demand deposits increased $91.6 million, or 3.0%, partially offset by a decrease in time deposits of $7.8 million, or 1.0%, and a decrease in savings accounts of $919,000, or 4.0%, respectively, from June 30, 2025.

The average cost of deposits was 3.56% for the third quarter of 2025, representing a 3-basis point decrease from the second quarter of 2025 and a 62-basis point decrease from the third quarter of 2024. The decreases were 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 2025 third quarter results, which will be broadcast live over the Internet, on Thursday, October 23, 2025, 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 30, 2025, and may be accessed by dialing 201-612-7415 and using passcode 13752288#. 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 19 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; and changes in key management personnel. 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, 2024 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 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)

Third Coast Bancshares, Inc. and Subsidiary

Financial Highlights

(unaudited)

Third Coast Bancshares, Inc. and Subsidiary

Financial Highlights

(unaudited)

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(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.

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

(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)