EXHIBIT 32.2 ------------ CERTIFICATION PURSUANT TO 18 U.S.C. SS.1350, AS ADOPTED PURSUANT TO SS.906 OF THE SARBANES-OXLEY ACT OF 2002 In connection with the quarterly report of Spire Corporation (the "Company") on Form 10-QSB (the "Report") for the period ended June 30, 2003 as filed with the Securities and Exchange Commission on the date hereof, I, Gregory G. Towle, Financial Controller and Treasurer (Principal Financial and Accounting Officer) of the Company, certify, pursuant to 18 U.S.C. ss.1350, as adopted pursuant to ss.906 of the Sarbanes-Oxley Act of 2002, that: (1) the report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and (2) the information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company. Dated: August 19, 2003 By: /s/ Gregory G. Towle ---------------------------- Gregory G. Towle Financial Controller and Treasurer (Principal Financial and Accounting Officer)