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 3, 2004 CERUS CORPORATION (Exact name of registrant as specified in its charter) Delaware 0-21937 68-0262011 (State of jurisdiction) (Commission File No.) (IRS Employer Identification No.) 2411 Stanwell Drive Concord, California 94520 (Address of principal executive offices and zip code) Registrant's telephone number, including area code: (925) 288-6000 Item 5. Other Events. On May 3, 2004, Cerus Corporation (the "Company") announced its financial results for its first quarter ended March 31, 2004. A copy of the Company's press release is attached as Exhibit 99.1 hereto and is incorporated herein by reference. Item 7. Financial Statements, Pro Forma Financial Information and Exhibits. (c) Exhibits Exhibit Number Description of Exhibit ------ ---------------------- 99.1 Press Release, dated May 3, 2004, entitled "Cerus Corporation Announces First Quarter Results." Item 12. Results of Operations and Financial Condition. On May 3, 2004, the Company announced its financial results for its first quarter ended March 31, 2004 and conducted a publicly-available conference call discussing those results. A copy of the Company's press release is attached as Exhibit 99.1 hereto and is incorporated herein by reference. 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. CERUS CORPORATION Dated: May 3, 2004 By: /s/ Gregory W. Schafer --------------------------- Gregory W. Schafer Vice President, Finance and Chief Financial Officer Index to Exhibits Exhibit Number Description of Exhibit ------------------ ------------------------------------------------------------ 99.1 Press Release, dated May 3, 2004, entitled "Cerus Corporation Announces First Quarter Results."