W.T.B. Financial Corporation is headquartered in Spokane, Washington and is the holding company for Washington Trust Bank. Washington Trust Bank, the largest independently-owned full-service commercial bank in the Northwest, has served personal, private, commercial and wealth management clients throughout the region since 1902. A wholly owned subsidiary of W.T.B. Financial Corporation, Washington Trust Bank has assets exceeding $11 billion and currently has 42 branches and offices in Idaho, Oregon, and Washington.