As filed with the Securities and Exchange Commission on January 23, 2003 Registration No. 333-91088 ================================================================================ SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 POST-EFFECTIVE AMENDMENT NO. 1 TO FORM S-3 REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 CONCERTO SOFTWARE, INC. (Exact name of registrant as specified in its charter) Delaware 02-0364368 (State or other jurisdiction (I.R.S. Employer Identification No.) of incorporation or organization) 6 Technology Drive Westford, MA 01886 (978) 952-0200 (Address, including zip code, and telephone number, including area code, of Registrant's principal executive offices) -------------------- JAMES D. FOY, PRESIDENT AND CHIEF EXECUTIVE OFFICER CONCERTO SOFTWARE, INC. 6 TECHNOLOGY DRIVE WESTFORD, MA 01886 (978) 952-0200 (Name, address, including zip code, and telephone number, including area code, of Agent for Service) -------------------- Copy to: JOHN M. MUTKOSKI, ESQ. JAMES R. KASINGER, ESQ. TESTA, HURWITZ & THIBEAULT, LLP 125 High Street Boston, MA 02110 (617) 248-7000 The Registrant hereby removes from registration under this Registration Statement (No. 333-91088) 83,898 shares of the Registrant's common stock, par value $.10 per share, registered hereunder, that have not been sold or transferred pursuant to this Registration Statement. 2 SIGNATURES Pursuant to the requirements of the Securities Act of 1933, as amended, the registrant certifies that it has reasonable grounds to believe that it meets all of the requirements for filing on Form S-3 and has duly caused this Post-Effective Amendment No. 1 to the registration statement to be signed on its behalf by the undersigned, thereunto duly authorized, in the City of Westford, in the Commonwealth of Massachusetts, on this 22nd day of January, 2003. CONCERTO SOFTWARE, INC. By: /s/ James D. Foy ---------------------------------- James D. Foy President, Chief Executive Officer and Director (Principal Executive Officer) Pursuant to the requirements of the Securities Act of 1933, this Post-Effective Amendment to the Registration Statement has been signed by the following persons in the capacities and on the date indicated. SIGNATURE TITLE DATE /s/ James D. Foy President, Chief Executive Officer and Director January 22, 2003 ------------------------------- (Principal Executive Officer) James D. Foy /s/ Michael J. Provenzano III* Vice President of Finance and Chief Financial January 22, 2003 -------------------------------- Officer (Principal Financial and Accounting Officer) Michael J. Provenzano III /s/ Alphonse M. Lucchese* Director January 22, 2003 ------------------------------- Alphonse M. Lucchese /s/ Michael D. Kaufman* Director January 22, 2003 ------------------------------- Michael D. Kaufman /s/ R. Scott Asen* Director January 22, 2003 ------------------------------- R. Scott Asen /s/ Peter Gyenes* Director January 22, 2003 ------------------------------- Peter Gyenes *By: /s/ James D. Foy -------------------------------- James D. Foy, Attorney-in-Fact 3