SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15 (d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported): June 3, 1997 United Security Bancorporation (Exact Name of Registrant as Specified in Charter) Washington 0-18561 91-1259511 ---------- ------- ---------- (State or other jurisdiction (Commission (IRS Employer Identi- of incorporation) File Number) fication Number) 9506 North Newport Highway, Spokane, Washington 99218- 1200 ----------------------------------------------------- - ----- (Address of principal executive offices/Zip Code) Registrant's telephone number, including area code: (509) 467-6949 --------------------------------------------------------- - ---------- Item 4. Changes in Registrant's Certifying Accountant. On June 3, 1997, the United Securities Bancorporation Board of Directors Audit Committee selected Moss Adams LLP as its independent auditing firm and new independent accountant, effective immediately. For further information the press release issued on June 6, 1997 announcing the selection of Moss Adams is incorporated by reference as Exhibit 99. 99. Press release dated June 6, 1997, issued by United Security Bancorporation. 1 EXHIBIT INDEX Exhibit No. Title - ----------- ----- 99. Press release dated June 6, 1997, issued by United Security Bancorporation SIGNATURES Pursuant to the requirements of the Security Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized. Dated: June 10, 1997 UNITED SECURITY BANCORPORATION By: /s/ Chad Galloway ------------------------------ Name: Chad Galloway Title: Vice President and Chief Financial Officer 2