PROSPECTUS SUPPLEMENT NO. 1 TO PROSPECTUS DATED JANUARY 15, 2003 OF COMPUTER ASSOCIATES INTERNATIONAL, INC. RELATING TO RESALES BY SELLING SECURITYHOLDERS OF 5% CONVERTIBLE SENIOR NOTES AND SHARES OF COMMON STOCK ISSUABLE UPON CONVERSION OF THE SENIOR NOTES This Prospectus Supplement supplements the Prospectus dated January 15, 2003 (the "Prospectus"). This Prospectus Supplement should be read in conjunction with the Prospectus, which is to be delivered by selling securityholders to prospective purchasers along with this Prospectus Supplement. 1. SELLING HOLDERS THE INFORMATION IN THE FOLLOWING TABLE SUPERSEDES IN PART AND SUPPLEMENTS THE INFORMATION IN THE RELEVANT SECTION IN THE PROSPECTUS. SHARES OF COMMON AGGREGATE PRINCIPAL SHARES OF STOCK BENEFICIALLY AMOUNT OF NOTES SHARES OF COMMON OWNED BENEFICIALLY COMMON STOCK STOCK AFTER COMPLETION SELLING HOLDER OWNED AND OFFERED BENEFICIALLY OWNED OFFERED OF THE OFFERING -------------- ------------------- ------------------ --------- ------------------ Banc of America Securities LLC........... $11,690,000 480,278 480,278 0 BN Convertible Securities Top Fund(1).... 350,000 14,379 14,379 0 BP Amoco PLC Master Trust(4)............. 1,217,000 49,999 49,999 0 Canyon Capital Arbitrage Master Fund, Ltd.(2)................................ 12,450,000 511,503 511,503 0 Canyon Value Realization Fund (Cayman), Ltd.(3)................................ 17,135,000 703,984 703,984 0 Canyon Value Realization Mac 18, Ltd. (RMF)(2)............................... 2,845,000 116,885 116,885 0 Canyon Value Realization Fund L.P.(2).... 9,070,000 372,637 372,637 0 The Estate of James Campbell(4).......... 278,000 11,421 11,421 0 Federated Rural Electric Insurance Exchange(1)............................ 600,000 24,650 24,650 0 Field Holdings(1)........................ 60,000 2,465 2,465 0 Gulf Investment Corporation(1)........... 340,000 13,968 13,968 0 The Hotel Union & Hotel Industry of Hawaii Pension Plan(4)................. 380,000 15,612 15,612 0 Indiana Lumbermens Mutual Insurance Company(1)............................. 450,000 18,488 18,488 0 The James Campbell Corporation(4)........ 230,000 9,449 9,449 0 Lehman Brothers Inc...................... 3,270,000 134,346 134,346 0 Michigan Mutual Insurance Company(1)..... 500,000 20,542 20,542 0 Sphinx Convertible Arb Fund SPC(4)....... 263,000 10,805 10,805 0 United National Insurance Company(1)..... 800,000 32,867 32,867 0 Viacom Inc. Pension Plan Master Trust(4)............................... 37,000 1,520 1,520 0 Zazove Convertible Arbitrage Fund, LP.(1)................................. 2,000,000 82,169 82,169 0 Zurich Institutional Benchmarks Master Fund Ltd(1)............................ 1,000,000 41,084 41,084 0 Zurich Institutional Benchmarks Master Fund Ltd(4)............................ 2,000,000 82,169 82,169 0 ------------------------ (1) Zazove Associates LLC is the registered investment advisor with discretionary authority to exercise voting and investment control over any shares of Common Stock issuable upon conversion of the Notes owned by this selling holder. Gene T. Pretti is the Chief Executive Officer of Zazove Associates LLC. (2) Canyon Capital Advisers, LLC exercises voting and investment control over any shares of Common Stock issuable upon conversion of the Notes owned by this selling holder. Joshua S. Friedman, Mitchell R. Julis, R. Christian B. Evensen and K. Robert Turner are the partners of Canyon Capital Advisers, LLC. (3) Joshua S. Friedman, Mitchell R. Julis and R. Christian B. Evenson exercise voting and investment control over any shares of Common Stock issuable upon conversion of the Notes owned by this selling holder. (4) SSI Investment Management has voting and investment control over any shares of Common Stock issuable upon conversion of the Notes owned by this selling holder. The majority shareholders of SSI Investment Management are John Gottfurcht, Amy Jo Gottfurcht and George Douglas. 2. PLAN OF DISTRIBUTION THE FOLLOWING SENTENCE SUPERSEDES IN PART AND SUPPLEMENTS THE INFORMATION IN THE SIXTH PARAGRAPH IN THE RELEVANT SECTION IN THE PROSPECTUS. The following selling holders are underwriters within the meaning of the Securities Act: Banc of America Securities, LLC, Deutsche Bank Securities Inc., Goldman, Sachs & Co., Jefferies & Company Inc., JP Morgan Securities, Inc., Lehman Brothers Inc., Salomon Smith Barney, Inc., UBS AG Cvt Prop, UBS Warburg LLC, Van Kampen Equity Income Fund and Weiss, Peck & Greer, LLC. Prospectus Supplement dated January 27, 2003.