Boston Private to Sell 3 Pacific Northwest Offices to Sterling Financial

Boston Private Financial Holdings, Inc.

(the “Company” or “BPFH”) today announced that its wholly-owned subsidiary, Boston Private Bank & Trust Company, entered into an agreement to sell its three Pacific Northwest offices to Sterling Financial Corporation

of Spokane, Washington. The three offices are located in Seattle, Bellevue, and Redmond, Washington. As of September 30, 2012, the Pacific Northwest offices had approximately $270 million in gross loans and $190 million in deposits.