As filed with the Securities and Exchange Commission on May 21, 1999. Registration No. 333-49577 - -------------------------------------------------------------------------------- - -------------------------------------------------------------------------------- UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 ------------------------------ POST-EFFECTIVE AMENDMENT NO. 1 TO FORM S-3 REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 ------------------------------ AETRIUM INCORPORATED (Exact name of registrant as specified in its charter) ------------------------------ MINNESOTA 41-1439182 (State or other jurisdiction (I.R.S. Employer of incorporation or organization) Identification No.) 2350 HELEN STREET NORTH ST. PAUL, MINNESOTA 55109 (651) 704-1800 (Address, including zip code, and telephone number, including area code, of registrant's principal executive offices) ------------------------------------------------------ DOUGLAS HEMER Aetrium Incorporated 2350 Helen Street North St. Paul, Minnesota 55109 (651) 704-1800 (Name, address, including zip code, and telephone number, including area code, of agent for service) COPIES TO: THOMAS C. THOMAS, ESQ. Oppenheimer Wolff & Donnelly LLP 101 Park Center Plaza, Suite 300 San Jose, California 95113-2237 -------------------------------------- - -------------------------------------------------------------------------------- - -------------------------------------------------------------------------------- DEREGISTRATION OF SECURITIES Aetrium Incorporated ("Aetrium" or the "Registrant") registered the resale of up to 930,000 shares (the "Offered Shares") of the common stock, par value $.001 per share (the "Common Stock"), of Aetrium on behalf of certain selling stockholders pursuant to its Registration Statement on Form S-3, File No. 333-49577 (including all amendments and supplements thereto, the "Registration Statement"), as originally filed with the Securities and Exchange Commission on April 7, 1998, as amended on April 28, 1998 and supplemented on September 18, 1998. The SEC declared the Registration Statement effective on April 30, 1998. Pursuant to this Post-Effective Amendment No. 1 to the Registration Statement, Aetrium hereby amends the Registration Statement to deregister the remaining Offered Shares that were not sold under the Registration Statement. 1 SIGNATURES Pursuant to the requirements of the Securities Act of 1933, 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 on Form S-3 to be signed on its behalf by the undersigned, thereunto duly authorized, in the City of Saint Paul and State of Minnesota, on May 18, 1999. AETRIUM INCORPORATED By: /s/ Joseph C. Levesque ---------------------- Joseph C. Levesque Chief Executive Officer and President (principal executive officer) Pursuant to the requirements of the Securities Act of 1933, this Post-Effective Amendment No. 1 to the Registration Statement has been signed on May 18, 1999 by the following persons in the capacities indicated. /s/ Joseph C. Levesque Chief Executive Officer, President and - ---------------------------- Chairman of the Board Joseph C. Levesque /s/ Darnell L. Boehm Chief Financial Officer, Secretary and Director - ---------------------------- (principal financial and accounting officer) Darnell L. Boehm /s/ Terrence W. Glarner Director - ---------------------------- Terrence W. Glarner /s/ Andrew J. Greenshields Director - ---------------------------- Andrew J. Greenshields /s/ Douglas L. Hemer Director - ---------------------------- Douglas L. Hemer /s/ Terrance J. Nagel Director - ---------------------------- Terrance J. Nagel 2