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PROSPERITY BANCSHARES, INC.® TO ACQUIRE SOUTHWEST BANCSHARES, INC.

PROSPERITY BANCSHARES, INC. (PRNewsfoto/Prosperity Bancshares, Inc.) Southwest Bancshares Logo Large Accessibility StatementSkip Navigation HOUSTON and SAN ANTONIO, Oct. 1, 2025 /PRNewswire/ -- Prosperity Bancshares, Inc. (NYSE: PB) ("Prosperity"), the parent company of Prosperity Bank, and Southwest Bancshares, Inc. ("Southwest"), the parent holding company of Texas Partners Bank ("Texas Partners"), headquartered in San Antonio, Texas, today jointly announced the signing of a definitive merger agreement ...