 TACOMA, WA and SACRAMENTO, CALIF., Sept. 22, 2021 GLOBE NEWSWIRE -- Columbia Banking System, Inc. NASDAQ: COLB, Columbia, the holding company for Columbia State Bank, and Bank of Commerce Holdings NASDAQ: BOCH, Bank of Commerce, the holding company for Merchants Bank of Commerce, today jointly announced approval by Bank of Commerce shareholders for their proposed merger, and the receipt of all required regulatory approvals. The merger was announced on June 23, 2021 and the transaction is expected to be completed on or about October 1, 2021. 