Columbia Banking System, the holding company for Columbia State Bank, completed the acquisition of Bank of Commerce Holdings, the holding company for Merchants Bank of Commerce, for $266m. "We are delighted to announce the completion of our merger with Merchants Bank of Commerce which marks our first physical presence in the state of California. The expansion is a natural continuation of our existing footprint and strengthens Columbia's position as a leading regional bank. We are pleased to welcome the Merchants Bank of Commerce family of clients, employees and shareholders to Columbia. As a combined company, our teams will continue to provide our relationship style of banking to the communities we serve," Clint Stein, Columbia President and CEO.