As filed with the Securities and Exchange Commission on March 18, 2002 Registration No 333-73120 SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 POST-EFFECTIVE AMENDMENT NO.1 to FORM S-3 REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 AT&T CORP. (exact name of registrant as specified in its charter) New York 4811 13-4924710 (State or other (Primary Standard Industrial (I.R.S. Employer jurisdiction of Classification Code Number) Identification Number) incorporation or organization) 32 Avenue of the Americas New York, New York 10013-2412 (212-387-5400) (Address, including zip code, and telephone number, including area code, of Registrant's principal executive offices) Marilyn J. Wasser Vice President - Law and Secretary AT&T Corp. 295 North Maple Avenue Basking Ridge, NJ 07920 (908) 221-2000 (Name, address, including zip code, and telephone number, including area code, of agent for service) Approximate date of commencement of proposed sale to the public: As soon as practicable after the effective date of this Registration Statement. If the only securities being registered on this form are being offered pursuant to dividend or interest reinvestment plans, please check the following box. [_] If any of the securities being registered on this form are to be offered on a delayed or continuous basis pursuant to Rule 415 under the Securities Act of 1933, other than securities offered only in connection with dividends or interest reimbursement plans, please check the following box. [_] If this form is filed to register additional securities for an offering pursuant to Rule 462(b) under the Securities Act, please check the following box and list the Securities Act registration number of the earlier registration statement for the same offering. [_]____________ If this form is a post-effective amendment filed pursuant to Rule 462(c) under the Securities Act, check the following box and list the Securities Act registration statement number of the earlier effective registration statement for the same offering. [_]____________ If this form is a post-effective amendment filed pursuant to Rule 462(d) under the Securities Act, check the following box and list the Securities Act registration statement number of the earlier effective registration statement for the same offering. [x] 333-73120 EXPLANATORY NOTE This Post-Effective Amendment No.1 to Form S-3 Registration Statement No. 333-73120 is filed solely to file Exhibits 99.01 and 99.02 as additional exhibits to the Registration Statement. In accordance with Section 462(d) of the Securities Act of 1933, as amended, this Post-Effective Amendment shall become effective immediately upon filing with the Securities and Exchange Commission (the "Commission"). PART II. INFORMATION NOT REQUIRED IN PROSPECTUS Item 16. Exhibits. See Exhibit Index. II-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 registration statement to be signed on its behalf by the undersigned, thereunto duly authorized, in the City of Basking Ridge, State of New Jersey, on the 18th day of March, 2002. AT&T CORP. By: /s/ Marilyn J. Wasser --------------------------- Marilyn J. Wasser Vice President-Law and Secretary Pursuant to the requirements of the Securities Act of 1933, this registration statement has been signed below by the following persons in the capacities and on the date indicated. SIGNATURE CAPACITY PRINCIPAL EXECUTIVE OFFICER: * --------------------------- C. Michael Armstrong Chairman and Chief Executive Officer PRINCIPAL FINANCIAL OFFICER: * Senior Executive Vice President and Chief --------------------------- Financial Officer Charles H. Noski PRINCIPAL ACCOUNTING OFFICER: * --------------------------- Nicholas S. Cyprus Vice President and Controller DIRECTORS * --------------------------- C. Michael Armstrong Director * --------------------------- J. Michael Cook Director * --------------------------- Kenneth T. Derr Director * --------------------------- M. Kathryn Eickhoff Director II-2 * --------------------------- George M.C. Fisher Director * --------------------------- Amos B. Hostetter Director -------------------------- Shirley A. Jackson Director * --------------------------- Donald F. McHenry Director * --------------------------- Louis A. Simpson Director * --------------------------- Michael I. Sovern Director * --------------------------- Sanford I. Weill Director * By: /s/ Marilyn J. Wasser --------------------------- Marilyn J. Wasser (Attorney-in-Fact) Date: March 18th, 2002. II-3 EXHIBIT INDEX EXHIBIT NUMBER ------- 5.01 Opinion of Robert S. Feit, General Attorney and Assistant Secretary of the Registrant, as to the legality of the securities being registered. (previously filed) 23.01 Consent of Robert S. Feit. (included in Exhibit 5.01) 23.02 Consent of PricewaterhouseCoopers LLP. (previously filed) 23.03 Consent of PricewaterhouseCoopers LLP. (previously filed) 23.04 Consent of KPMG LLP. (previously filed) 23.05 Consent of KPMG LLP. (previously filed) 23.06 Consent of Arthur Andersen LLP. (previously filed) 24.01 Powers of Attorney.(previously filed) 99.01 Notice of Redemption of Shares of Class A Senior Cumulative Exchangeable Preferred Stock of TCI Pacific Communications, Inc. 99.02 Letter of Transmittal to Holders of Shares of Class A Senior Cumulative Exchangeable Preferred Stock of TCI Pacific Communications, Inc. II-4