SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 Schedule 13G (Rule 13d-102) INFORMATION TO BE INCLUDED IN STATEMENTS FILED PURUSANT TO RULES 13d-1 (b), (c) AND (d) AND AMENDMENTS THERETO FILED PURSUANT TO 13d-2(b) (Amendment No. 1) Performance Technologies, Incorporated (Name of Issuer) Common Stock, $.01 par value (Title of Class of Securities) 71376K 10 2 (CUSIP Number) CUSIP Number 71376K 10 2 --------------------- 1 NAME OF REPORTING PERSONS I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS Charles E. Maginness --------------------- 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (a) (b) --------------------- 3 SEC USE ONLY --------------------- 4 CITIZENSHIP OR PLACE OF ORGANIZATION United States --------------------- 5 SOLE VOTING POWER - 672,860 NUMBER ------------------------------------------------------------- OF 6 SHARED VOTING POWER - 0 SHARES ------------------------------------------------------------- BENEFICIALLY 7 SOLE DISPOSITIVE POWER - 672,860 OWNED ------------------------------------------------------------- BY EACH 8 SHARED DISPOSITIVE POWER - 0 REPORTING ------------------------------------------------------------- PERSON WITH 9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 692,860 (See Item 4 for disclaimer of beneficial ownership as to certain shares) --------------------- 10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES --------------------- 11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9) 5.6% --------------------- 12 TYPE OF REPORTING PERSON IN --------------------- Item 1(a). Name of Issuer: Performance Technologies, Incorporated Item 1(b). Address of Issuer's Principal Executive Offices: 205 Indigo Creek Drive Rochester, New York 14626 Item 2(a). Names of Person Filing: Charles E. Maginness Item 2(b). Address of Principal Business Office, or, if None, Residence: 205 Indigo Creek Drive Rochester, New York 14626 Item 2(c). Citizenship: United States Item 2(d). Title of Class of Securities: Common Stock Item 2(e). CUSIP Number: 71376K 10 2 Item 3. Statements Filed Pursuant to Rules 13d-1(b) or 13d-2(b): Not Applicable Item 4. Ownership: (a) Amount Beneficially Owned: 692,860 shares Such amount consists of: (i) 579,613 shares owned by the Reporting Person directly; (ii) 93,247 shares owned by the Reporting Person's wife, as to which shares the Reporting Person disclaims beneficial ownership; and (iii) 20,000 shares subject to presently exercisable options held by the Reporting Person. (b) Percent of Class: 5.6% (c) Number of shares as to which such person has: (i) sole power to vote or to direct the vote: 672,860 (ii) shared power to vote or to direct the vote: 0 (iii) sole power to dispose or to direct the disposition of: 672,860 (iv) shared power to dispose or to direct the disposition of: 0 Item 5. Ownership of Five Percent or Less of a Class: Not Applicable Item 6. Ownership of More than Five Percent on Behalf of Another Person: Not Applicable Item 7. Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on by the Parent Holding Company: Not Applicable Item 8. Identification and Classification of Members of the Group: Not Applicable Item 9. Notice of Dissolution of Group: Not Applicable Item 10. Certification: Not Applicable SIGNATURE After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct. Dated: February 12, 2004 /s/ Charles E. Maginness ------------------------ Charles E. Maginness