================================================================================ ================================================================================ UNITED STATES 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): May 23, 2003 NorthWestern Corporation (Exact name of registrant as specified in its charter) Delaware 0-692 46-0172280 (State or other jurisdiction (Commission File (IRS Employer of incorporation) Number) Identification No.) 125 South Dakota Avenue 57104 Sioux Falls, South Dakota (Zip Code) (Address of principal executive offices) (605) 978-2908 ---------------------------- (Registrant's telephone number, including area code) ================================================================================ ================================================================================ Item 5. Other Events On May 23, 2003, NorthWestern Corporation (the "Company") issued a press release announcing that the Company's Board of Directors had elected to defer interest payments on the subordinated debentures of all series of its trust preferred securities. As a result, cash distributions on all series of the trust preferred securities issued by the Company's affiliated trusts have been deferred. Item 7. Financial Statements and Exhibits EXHIBIT NO. DESCRIPTION OF DOCUMENT - -------------------------------------------------------------------------------- 99.1* Press Release of NorthWestern Corporation dated May 23, 2003 * filed herewith 2 SIGNATURES Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized. NorthWestern Corporation By: /s/ Eric R. Jacobsen ------------------------------------ Eric R. Jacobsen Senior Vice President, General Counsel and Chief Legal Officer Date: May 23, 2003 3 Index to Exhibits ----------------- EXHIBIT NO. DESCRIPTION OF DOCUMENT - -------------------------------------------------------------------------------- 99.1* Press Release of NorthWestern Corporation dated May 23, 2003 * filed herewith 4