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 12, 2004 THERMOGENESIS CORP. (Exact name of registrant as specified in its charter) Delaware 0-16375 94-3018487 --------- ------- ---------- (State or other jurisdiction of (Commission (I.R.S. Employer incorporation or organization) File Number) Identification No.) 2711 Citrus Road Rancho Cordova, California 95742 (916) 858-5100 -------------- (Address and telephone number of principal executive offices) Item 7. Financial Statements and Exhibits. Exhibit No. Exhibit Description ----------- ------------------- 99.1 Press release announcing third quarter results Item 12. Results of Operations and Financial Condition. ThermoGenesis Corp. announced its results for the third quarter ended March 31, 2004, on a press release, furnished as Exhibit 99.1. 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. THERMOGENESIS CORP., a Delaware corporation Dated: May 18, 2004 /s/ Renee M. Ruecker -------------------------------------------- Renee M. Ruecker, Chief Financial Officer (Principal Financial and Accounting Officer)