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) SEPTEMBER 7, 2000 RADISYS CORPORATION STATE OF OREGON 0-26844 93-0945232 - -------------------------------------------------------------------------------- (State or other jurisdiction of (Commission (IRS Employer incorporation or organization) File No.) Identification No.) 5445 NE DAWSON CREEK DRIVE, HILLSBORO, OR 97124 - -------------------------------------------------------------------------------- (Address of principal executive offices) (Zip Code) (503) 615-1100 -------------------------------------------------- (Registrant's telephone number, including area code) NO CHANGE -------------------------------------------------------------- (Former name, former address and former fiscal year, if changed since last report) ITEM 5. OTHER EVENTS On September 7, 2000 RadiSys Corporation (the "Company") announced that it privately placed $20 million aggregate principal amount of convertible subordinated notes pursuant to the exercise of an over-allotment option granted to the initial purchasers of $100 million aggregate principal amount of the notes. The Company's press release announcing the offering is attached hereto as Exhibit 99.1. ITEM 7. FINANCIAL STATEMENTS AND EXHIBITS (c) EXHIBITS. 99.1 Press release dated September 7, 2000. 2 SIGNATURE 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. Dated: September 7, 2000. RADISYS CORPORATION By: STEPHEN F. LOUGHLIN ------------------------------------- Stephen F. Loughlin Vice President of Finance and Administration and Chief Financial Officer 3 EXHIBIT INDEX EXHIBIT DESCRIPTION 99.1 Press release dated September 7, 2000.