================================================================================ Registration Nos. 033-50484 333-11732 333-127429 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 POST-EFFECTIVE AMENDMENT NO. 1 TO FORM S-8 REGISTRATION STATEMENT NO. 033-50484 POST-EFFECTIVE AMENDMENT NO. 2 TO FORM S-8 REGISTRATION STATEMENT NO. 2 TO 333-11732 POST-EFFECTIVE AMENDMENT NO. 1 TO FORM S-8 REGISTRATION STATEMENT NO. 333-127429 UNDER THE SECURITIES ACT OF 1933 IPSCO INC. (Exact name of Registrant as specified in its charter) ---------- Canada 650 Warrenville Road 98-0077354 (State or other Suite 500 (I.R.S. Employer jurisdiction of) Lisle, Illinois 60532 Identification No.) incorporation or (Address of principal executive organization offices) ---------- IPSCO INCENTIVE SHARE OPTION PLAN IPSCO INC. INCENTIVE SHARE OPTION PLAN IPSCO INC. DEFERRED SHARE UNIT PLAN IPSCO INC. INCENTIVE SHARE PLAN (Full Title of Plan) ---------- Michele Klebuc-Simes General Counsel 650 Warrenville Road Suite 500 Lisle, Illinois 60532 (630) 810-4800 (Name, address and telephone number, including area code, of agent for service) ---------- Copies to: Matthew J. Kautz, Esq. White & Case LLP 1155 Avenue of the Americas New York, New York 10036 (212) 819-8200 ---------- ================================================================================ DEREGISTRATION OF UNSOLD SECURITIES These Post-Effective Amendments relate to the following Registration Statements on Form S-8 of IPSCO Inc. (the "Company") (collectively, the "Registration Statements"): File No. 033-50484, filed on August 5, 1992 with the Securities and Exchange Commission (the "SEC"), of the Company registering 615,125 common shares of the Company, issuable under the IPSCO Incentive Share Option Plan. File No. 333-11732, filed on March 28, 2000 with the SEC, as amended by Post-Effective Amendment No. 1 filed on March 31, 2000, of the Company registering 3,341,338 common shares of the Company, issuable under the IPSCO Inc. Incentive Share Option Plan and the IPSCO Inc. Deferred Share Unit Plan. File No. 333-127429 filed on August 11, 2005 with the SEC, of the Company registering 600,000 common shares of the Company, issuable under the IPSCO Inc. Incentive Share Plan. On May 3, 2007, the Company entered into a Transaction Agreement (the "Transaction Agreement") with SSAB Sventskt Stal AB ("SSAB"). Pursuant to the terms of the Transaction Agreement, SSAB acquired all of the outstanding shares of the Company on July 18, 2007. As a result, the offerings pursuant to the Registration Statements have been terminated. In accordance with the undertakings by the Company in the Registration Statements to remove from registration, by means of a post-effective amendment, any of the securities which remain unsold at the termination of the offering, the Company hereby removes from registration the common shares of the Company that were registered but unsold under the Registration Statements listed above, filed with the SEC on the dates listed above. -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-8 and has duly caused these Post-Effective Amendments to Form S-8 Registration Statements to be signed on its behalf by the undersigned, thereunto duly authorized, in the City of Lisle, State of Illinois, United States of America, on the 19th day of July, 2007. IPSCO Inc. By: /s/ John Tulloch -------------------------- Name: John Tulloch Title: President By: /s/ Phil Marusarz -------------------------- Name: Phil Marusarz Title: Vice President and Chief Financial Officer Pursuant to the requirements of the Securities Act of 1933, these Post-Effective Amendments to Form S-8 Registration Statements have been signed by the following persons in the capacities indicated below on this 19th day of July, 2007. Signature Title ----------------------------------------------------------------------- /s/ John Tulloch Principal Executive Officer ------------------------ John Tulloch /s/ Phil Marusarz Principal Financial and Accounting Officer ------------------------ Phil Marusarz /s/ Alan Bell Director ------------------------ Alan Bell /s/ Jeffrey Kerbel Director ------------------------ Jeffrey Kerbel Jonas Bergstrand Director ------------------------