Columbia Banking System and Pacific Premier Bancorp Announce Regulatory Approvals and Anticipated Merger Closing Date

TACOMA, Wash. and IRVINE, Calif., Aug. 6, 2025 /PRNewswire/ -- Columbia Banking System, Inc. ("Columbia") (Nasdaq: COLB), the parent company of Columbia Bank,¹ and Pacific Premier Bancorp, Inc. ("Pacific Premier") (Nasdaq: PPBI), the parent company of Pacific Premier Bank, National Association, jointly announced today the receipt of all required regulatory approvals for the previously announced all-stock transaction pursuant to which Columbia will acquire Pacific Premier. The transaction was announced on April 23, 2025, and is expected to be completed on or around August 31, 2025, pending the satisfaction or waiver of the remaining customary closing conditions outlined in the merger agreement governing the transaction.

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