Columbia Banking System Completes Acquisition of Pacific Premier Bancorp and Unifies Columbia Brand

Acquisition accelerates Southern California expansion

Columbia Bank unveils new brand, introduces name change to customers

TACOMA, Wash., Sept. 2, 2025 /PRNewswire/ -- Columbia Banking System, Inc. ("Columbia") (Nasdaq: COLB), the parent company of Columbia Bank, and Pacific Premier Bancorp, Inc. ("Pacific Premier") (Nasdaq: PPBI), the parent company of Pacific Premier Bank, National Association ("Pacific Premier Bank"), jointly announced today the closing of Columbia's previously announced acquisition of Pacific Premier.

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