Portland, Ore.-based Columbia Trust Company has appointment Rob Pitois as senior vice president and regional trust manager for California and Nevada, the trust company announced.

The appointment comes on the heels of Columbia Trust Company’s acquisition earlier this year of Umpqua Private Bank, which is based in Tacoma, Wash. Pitois previously led a team of Umpqua Private Bank advisors and bankers focused on providing comprehensive wealth management solutions to high-net-worth families, business owners, family offices, and select non-profit organizations.

He will be responsible for leading the company’s expansion into the Washington and Califonia markets. Prior to his service at Umpqua, Pitois was a senior private banker and San Diego market team leader at City National for eight years. Pitois has served the California market for more than 23 years.

“Columbia Trust Company has gone through a period of rapid growth in the past three years, and this appointment is one of many to come as we plan our expansion into California, Nevada, and across the West,” Rob Howell, president and director of investments at Columbia Trust Company, said in a statement. “Under Pitois’s leadership, we will hire investment specialists, trust market managers, trust officers, and other experienced estate planning professionals to deliver our clients the benefits of Columbia Bank’s recent merger with Umpqua Bank.”

Columbia Trust Company has offices in Washington, Oregon and Idaho.