8-K: Third Coast Bancshares to Acquire Great Plains Bancshares

Third Coast Bancshares, Inc. announced a definitive merger agreement to acquire Great Plains Bancshares, Inc. in an all-stock transaction valued at approximately $239.6 million.

Summary

• Third Coast Bancshares, Inc. (Third Coast) has entered into a definitive merger agreement to acquire Great Plains Bancshares, Inc. (Great Plains).
• The transaction is an all-stock deal valued at approximately $239.6 million, based on Third Coast's closing stock price on October 6, 2026.
• Upon completion, the combined entity is expected to have total assets exceeding $9 billion.
• The merger aims to combine two culturally aligned community banks, expand Third Coast's presence in North Texas, and establish an entry into the Oklahoma market.
• Great Plains, with over 100 years of history, operates a 23-branch franchise across Oklahoma and Texas.
• The transaction is expected to close in the first quarter of 2027, subject to regulatory and shareholder approvals.
• Great Plains will continue to operate under the Great Plains brand as a division of Third Coast Bank.

Sentiment

Score: 8

Explanation: StockSavvy.ai views this as a positive development, indicating strategic growth and market expansion for Third Coast Bancshares.

Positives

• Creates a combined entity with approximately $9 billion in assets, providing greater scale and financial capacity.
• Expands Third Coast's footprint into the Oklahoma market and strengthens its North Texas presence.
• Combines two relationship-driven community banks with aligned cultures.
• Expected to be accretive to projected EPS with manageable tangible book value dilution.
• Great Plains brings a 100+ year old franchise with a granular, low-cost deposit base.
• Two Great Plains representatives will join the boards of directors of Third Coast and Third Coast Bank.
• Mark Russell, CEO of Great Plains, will continue in a leadership role post-closing.

Negatives

• Potential dilution to Third Coast's common stock due to the issuance of new shares.
• The transaction is subject to regulatory and shareholder approvals, which could delay or prevent closing.
• Integration of operations may be costly, difficult, or delayed.
• Potential for unexpected factors or events to make the transaction more expensive than anticipated.

Risks

• The occurrence of any event that could give rise to the termination of the merger agreement.
• The outcome of any legal proceedings that may be instituted against either company.
• Failure to obtain required regulatory, shareholder, or other approvals, or conditions imposed by such approvals.
• The risk that the benefits of the transaction may not be fully realized or may take longer than expected.
• Disruption to the parties' businesses as a result of the announcement and pendency of the transaction.
• Challenges in integrating operations, which could be delayed, more costly, or difficult than expected.
• Reputational risk and potential adverse reactions from customers, suppliers, employees, or business partners.
• General competitive, economic, political, and market conditions, as well as major catastrophes.

Future Outlook

The merger is expected to create a stronger organization with greater scale, expanded capabilities, and increased capacity to support customers and communities. The combined company anticipates enhanced ability to serve businesses and communities, creating long-term value for stakeholders. Pro forma financial projections indicate accretion to EPS and manageable TBV dilution, with expected cost savings of $17.1 million.

Management Comments

• "We are thrilled to join forces with Great Plains, an exceptional franchise rooted in relationships across Oklahoma and North Texas, a talented team, and a well-earned reputation for doing right by its customers."
• "Together, we are creating a stronger organization with greater scale, expanded capabilities, and increased capacity to support our customers. This combination will strengthen our ability to serve businesses and communities across our markets while creating long-term value for all stakeholders."
• "Great Plains was built on the belief that strong relationships create strong communities. As we looked to the future, it was important to find a banking partner that shared that belief. Third Coast's commitment to relationship banking, local leadership, and community investment makes this partnership a natural fit."
• "Together, we can honor our heritage, expand opportunities for our customers and employees, and advance our shared purpose of growing communities throughout the markets we serve."
• "For our employees and customers, it is business as usual. Please continue serving our customers and carrying out your day-to-day responsibilities just as you do today."
• "As we begin this process, I ask that we welcome our future colleagues with respect, curiosity, and a genuine spirit of partnership. We have much to learn from one another and much we can accomplish together."

Industry Context

StockSavvy.ai notes that this merger aligns with the ongoing trend of consolidation within the regional banking sector, where institutions seek scale, expanded market reach, and enhanced technological capabilities to remain competitive. The combination of Third Coast's Texas presence with Great Plains' Oklahoma and North Texas operations creates a more robust regional player.

Comparison to Industry Standards

• The transaction's Price / Tangible Book Value multiple of 1.56x is slightly below the median of 1.62x for comparable high-performing target banks in recent M&A deals (since 1/1/2024, $150M-$500M deal value, LTM ROAA > 1.00%).
• The Price / LTM EPS multiple of 9.3x is below the median of 12.3x for comparable high-performing targets.
• The Price / LTM EPS + Cost Savings multiple of 6.1x is also below the median of 8.2x for comparable high-performing targets.
• The Core Deposit Premium of 7.7% is below the median of 9.3% for comparable high-performing targets.
• Pro forma 2027E ROAA is projected at ~1.3%, which is slightly above the peer median of ~1.2% but below some high-performing peers.
• Pro forma 2027E ROATCE is projected at ~15%, which is above the peer median of ~13% and competitive with high-performing peers.
• Pro forma 2027E Efficiency Ratio is projected at ~56%, which is below the peer median of ~58% and competitive with high-performing peers.
• Pro forma 2027E NIM is projected at ~4.1%, which is above the peer median of ~3.8%.

Management Changes

Legal Proceedings

• The possibility of legal proceedings that may be instituted against Third Coast or Great Plains is listed as a risk factor.

Stakeholder Impact

• Shareholders: Potential for increased value through a larger, more diversified company; dilution from stock issuance; Great Plains shareholders will own 22% of the combined entity.
• Employees: Opportunity for expanded roles and resources; potential for integration challenges and changes; commitment to open communication and thoughtful planning.
• Customers: Enhanced services, expanded capabilities, and increased capacity to support relationships; business as usual until closing.
• Communities: Continued investment and strengthening through lasting relationships, building on the heritage of both banks.

Next Steps

• Obtain customary regulatory approvals.
• Obtain shareholder approvals from both Third Coast and Great Plains.
• File a registration statement on Form S-4 with the SEC, including a joint proxy statement/prospectus.
• Distribute the definitive joint proxy statement/prospectus to shareholders.
• Complete the merger, expected in the first quarter of 2027.
• Appoint two Great Plains representatives to the boards of directors of Third Coast and Third Coast Bank.
• Mark Russell to continue in a leadership role with Third Coast.
• Integrate operations of Third Coast Bank and Great Plains National Bank.

Key Dates

Recommendation

The merger presents a strategic opportunity for growth and scale, with positive financial projections and a strong cultural fit. However, the inherent risks associated with mergers, including integration challenges, regulatory approvals, and potential dilution, warrant a cautious approach. While the deal appears sound, it's prudent for existing Third Coast shareholders to hold and for potential investors to monitor the integration process closely before considering a buy.

Keywords

merger, acquisition, bank, financial services, community banking, asset growth, market expansion, regulatory approval