UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 ----------------------- FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 ----------------------- Date of Report (Date of earliest event reported): December 10, 2007 United States Steel Corporation - -------------------------------------------------------------------------------- (Exact name of registrant as specified in its charter) Delaware 1-16811 25-1897152 --------------- ---------------------- ------------------- (State or other (Commission File (IRS Employer jurisdiction of Number) Identification No.) incorporation) 600 Grant Street, Pittsburgh, PA 15219-2800 ---------------------------------- ---------- (Address of principal executive (Zip Code) offices) (412) 433-1121 ------------------------------ (Registrant's telephone number, including area code) - -------------------------------------------------------------------------------- Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions: [ ] Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425) [ ] Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12) [ ] Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b)) [ ] Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c)) Item 1.01 Entry into a Material Definitive Agreement Pursuant to an Indenture dated as of May 21, 2007 (the "Indenture") between United States Steel Corporation (the "Corporation") and The Bank of New York, as trustee (the "Trustee"), a copy of which was filed as Exhibit 4.1 to the Corporation's Report on Form 8-K filed on May 22, 2007, the Corporation and the Trustee entered into a Second Supplemental Indenture dated as of December 10, 2007 (the "Supplemental Indenture"). The Supplemental Indenture provides for the issuance and sets forth the terms (such as mandatory and optional redemption) of the Corporation's 7.00% Senior Notes due 2018. The Supplemental Indenture also contains covenants regarding limitations on liens and sale- leasebacks and the purchase of the notes upon a change of control as well as other customary provisions. A copy of the Supplemental Indenture is attached as Exhibit 4.1 to this Form 8-K. Item 2.03 Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant. On December 10, 2007, the Corporation consummated the issuance and sale of $500,000,000 principal amount of the Corporation's 7.00% Senior Notes due 2018 pursuant to the terms of the Indenture and the Supplemental Indenture. The terms of the notes are set forth in the notes and in the Indenture and the Supplemental Indenture. A copy of the form of note is attached as Exhibit 4.2 to this Form 8-K. Item 9.01 Financial Statements and Exhibits (d) Exhibits 4.1 Second Supplemental Indenture dated as of December 10, 2007 to Indenture dated as of May 21, 2007. 4.2 7.00% Senior Notes due 2018 SIGNATURE Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized. UNITED STATES STEEL CORPORATION By /s/ Larry T. Brockway -------------------------- Larry T. Brockway Vice President & Treasurer Dated: December 10, 2007