Prosperity Bancshares Completes $2.0 Billion Acquisition of Stellar Bancorp
PB sits 20% above its 52-week low of $61.065 on elevated volume (3.6× avg).
Summary
Prosperity Bancshares has finalized its $2.0 billion acquisition of Stellar Bancorp, integrating operations, assuming significant debt, and appointing key executives from the acquired company.
Key Events · M&A and Partnerships · PB
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Completion of Stellar Bancorp Acquisition
Prosperity Bancshares completed its previously announced $2.0 billion acquisition of Stellar Bancorp, Inc., effective July 1, 2026.
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Consideration Details
The transaction involved approximately $590 million in cash and 19 million shares of Prosperity common stock.
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Assumption of Financial Obligations
Prosperity assumed approximately $2.17 billion in Federal Home Loan Bank obligations from Stellar Bank as part of the merger.
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Executive and Board Appointments
Robert R. Franklin, Jr. and Joseph B. Swinbank, former Stellar directors, joined Prosperity's Board. Mr. Franklin was also appointed Vice Chairman of Prosperity and Prosperity Bank, with a compensation package including a $3 million signing bonus and 25,000 restricted shares.
Analysis · PB · Finance
This filing confirms the finalization of Prosperity Bancshares' previously announced $2.0 billion acquisition of Stellar Bancorp, effective July 1, 2026. The transaction involved approximately $590 million in cash and 19 million shares of Prosperity common stock, representing a significant expansion for the company. As part of the integration, Prosperity assumed $2.17 billion in Federal Home Loan Bank obligations from Stellar Bank and appointed two former Stellar directors to its board, including Robert R. Franklin, Jr. as Vice Chairman with a substantial compensation package. The completion of this major merger removes uncertainty and marks a new phase for the combined entity.
How filings like this one have moved
In the 30 days to Oct 3, 2026, 36.5% of the 1062 measured filings Wiseek scored 8 moved their stock by 5% or more by the next session's close. The median move was -0.61%. These are measured outcomes after filings of this importance, not a forecast for this one.
Measured one observation per ticker per day, after exclusions. Current figures: Filing Impact Tracker · open dataset
At the time of this filing, PB was trading at $73.00 on NYSE in the Finance sector, with a market capitalization of approximately $7.4B. 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.