X0202 4 2007-07-23 1 0000898018 MOUNTAIN BANK HOLDING CO 623852100 0001232287 BRUMLEY SHEILA M 0 1 0 0 SVP & Chief Financial Officer Common Stock 2007-07-23 4 D 0 21732 D 0 D Employee Stock Option (Right to Buy) 8.3333 2007-07-23 4 D 0 3150 D 2009-05-18 Common Stock 3150 0 D Disposed of pursuant to merger agreement between issuer and Columbia Banking System, Inc. in exchange for 9,194 shares of Columbia Banking System common stock having a value of $23.54 per share based on the exchange ratio. This option, which provided for vesting in three equal annual installments beginning May 18, 2002, was assumed by Columbia Banking System, Inc. in the merger and replaced with an option to purchase 2,552 shares of Columbia Banking System common stock for $10.28 per share. Sheila M. Brumley 2007-07-23