Prosperity Bancshares Clears Federal Hurdles for Stellar Merger, Shareholder Vote Set for May 27

Context: The waiver means the Federal Reserve Bank of Dallas agreed not to require a pre‑merger review, a step that can delay deals. FDIC approval ensures the combined bank meets capital and consumer‑protection standards, and the Texas Department of Banking sign‑off covers state‑chartered operations. Together, these approvals remove the major regulatory obstacles to the all‑stock transaction, under which Prosperity will issue new shares to Stellar shareholders based on a fixed exchange ratio.

Key Facts: On April 22, 2026, PB shares rose 1.2% to $78.40, giving the bank a market value of about $4.3 billion. STEL shares gained 0.8% to $45.20, valuing Stellar at roughly $1.6 billion. The pro‑forma combined market cap would be near $5.9 billion, placing the merged entity above the median of the KBW Bank Index, which was up 0.5% year‑to‑date. The companies expect to close the deal on or about July 1, 2026, contingent on the Stellar shareholder vote and satisfaction of customary closing conditions.

What It Means: The cleared regulatory path reduces uncertainty and may support cost synergies from overlapping branches and technology platforms. Shareholders will assess whether the projected earnings accretion justifies the dilution from the share issuance. Integration risks, including cultural alignment and systems conversion, remain key factors that could affect realized benefits.

Investors will watch the May 27 shareholder vote and any remaining closing conditions for clues on whether the deal closes as expected July 1.