Prosperity Bancshares Files Amended S-4 Finalizing Stellar Bancorp Merger Terms for Shareholder Vote
Summary
Prosperity Bancshares filed an amended S-4 registration statement, detailing the definitive cash and stock consideration for its $2.0 billion acquisition of Stellar Bancorp and outlining the path to shareholder approval.
Key Events
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Definitive Merger Consideration
Stellar shareholders will receive $11.36 in cash and 0.3803 shares of Prosperity common stock for each share.
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Transaction Value
The acquisition of Stellar Bancorp is valued at approximately $2.0 billion.
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Shareholder Ownership
Former Stellar shareholders are projected to own approximately 16.1% of the combined company post-merger.
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Financial Impact Projections
The merger is expected to be accretive to Prosperity's estimated 2026 and 2027 earnings per share, though dilutive to tangible book value per share at closing.
Analysis
This S-4/A filing provides the definitive terms for Prosperity Bancshares' acquisition of Stellar Bancorp, a transaction valued at approximately $2.0 billion. Stellar shareholders will receive a fixed exchange of 0.3803 shares of Prosperity common stock and $11.36 in cash for each Stellar share. This filing is a crucial step in the merger process, providing the final consideration details and updated regulatory approval status, including the Federal Reserve Bank of Dallas's waiver of prior approval obtained on March 17, 2026. The merger is expected to be accretive to Prosperity's earnings per share in 2026 and 2027, despite an anticipated dilution to tangible book value per share. The transaction will result in former Stellar shareholders owning approximately 16.1% of the combined entity, significantly expanding Prosperity's scale and market presence. Stellar shareholders are scheduled to vote on the merger on May 27, 2026.
At the time of this filing, PB was trading at $70.05 on NYSE in the Finance sector, with a market capitalization of approximately $7.1B. The 52-week trading range was $61.07 to $77.20. This filing was assessed with neutral market sentiment and an importance score of 8 out of 10.