On Monday, two regional banks, Columbia Banking System Inc. and Pacific Continental Corp., announced plans to merge in a deal worth $644.1 million.

Based in Tacoma, Washington, Columbia Banking recently bought West Coast Bancorp. Pacific Continental Corp. is the holding company of Pacific Continental Bank. Once completed, the merger will bring together close to $12 billion in assets.

The Pillsbury team advising Pacific Continental includes San Francisco Corporate partner Patricia Young, Los Angeles Executive Compensation & Benefits partner Mark Jones, New York Tax partner Jim Chudy and San Francisco Emerging Growth & Venture Capital associate Robert Tian.