Columbia Banking System, Inc. and Umpqua Holdings Corporation announced the closing of their previously announced merger, combining the two premier banks in the Northwest to create one of the largest banks headquartered in the West. At the Effective Time, in accordance with the terms of the Merger Agreement the combined company's Board of Directors consists of 14 members, with seven directors from Columbia and seven directors from Umpqua: Cort L. O'Haver, Executive Chair; Craig D. Eerkes, Lead Independent Director Mark A. Finkelstein; Eric S. Forrest; Peggy Y. Fowler; Randal L. Lund; Luis F. Machuca; S. Mae Fujita Numata; Maria M. Pope; John F. Schultz; Elizabeth W. Seaton; Clint E. Stein; Hilliard C. Terry, III and Anddria Varnado.