Third Coast Bancshares, Inc. Securities Lawsuit Investigation

Shamis & Gentile P.A., a law firm that advocates for investors who are victims of securities fraud, is investigating potential claims against Third Coast Bancshares, Inc. (TCBX)

If you have held Third Coast Bancshares securities since the merger announcement on October 22, 2025, you may have legal options to ensure the transaction provides fair value and full disclosure to shareholders, at absolutely no cost to you.

About Third Coast Bancshares

Third Coast Bancshares is a Texas-incorporated bank holding company and the parent of Third Coast Bank, a commercially focused financial institution with operations across major Texas metropolitan areas.

The company operates primarily in the commercial lending and banking services sectors.

What's Being Investigated

Lawyers are reviewing the October 22, 2025, announcement and related disclosures regarding Third Coast Bancshares’ definitive merger agreement to acquire Keystone Bancshares, Inc., a cash-and-stock transaction valued at approximately $123 million.

Under the announced terms, the transaction includes both cash and stock consideration, with an aggregate cash cap of $20 million and an exchange ratio subject to downward adjustment if certain equity thresholds are not met. Upon completion, the combined company is expected to have more than $6 billion in assets.

The merger is anticipated to close in the first quarter of 2026, pending customary shareholder and regulatory approvals.

The investigation is focused on whether Third Coast Bancshares’ board of directors conducted a fair and informed process in connection with the Keystone merger. It will also review whether shareholders received adequate information about potential conflicts of interest, valuation risks, and the fairness of the exchange ratio.

Your Rights and Next Steps

This is an active investigation into whether Third Coast Bancshares’ directors and officers fulfilled their fiduciary duties in connection with the proposed acquisition of Keystone Bancshares, Inc. If you held Third Coast Bancshares (TCBX) shares at the time of the merger announcement and continue to hold them today, you may have certain rights.

Potential next steps may include:

• Join as a plaintiff in a shareholder action if evidence supports claims of breaches of fiduciary duty or an unfair process.
• Seek additional disclosures or improvements to the merger agreement to help ensure shareholders receive fair value and complete information.

Shareholder actions of this type generally require that you held shares at the time of the merger announcement and continue to hold them through the outcome of the case or the completion of the transaction.

What Shareholders Can Do

Securities investigations are time-sensitive. If you have held Third Coast Bancshares (TCBX) securities since the October 22, 2025 merger announcement, you may have legal options to ensure the transaction provides fair value and full disclosure to shareholders, at absolutely no cost to you.

To participate and preserve your rights, complete the form below to join the investigation.