424B3 1 a2051157z424b3.txt 424B3 Filed Pursuant to Rule 424 (b) (3) and (c) File No. 333-54350 GILEAD SCIENCES, INC. $250,000,000 PRINCIPAL AMOUNT 5% CONVERTIBLE SUBORDINATED NOTES DUE DECEMBER 15, 2007 AND SHARES OF COMMON STOCK ISSUABLE UPON CONVERSION OF THE NOTES ------------------------------------------------ This prospectus supplement should be read in conjunction with the prospectus dated February 9, 2001, which is to be delivered with this prospectus supplement. SEE "RISK FACTORS" BEGINNING ON PAGE 6 OF THE PROSPECTUS TO READ ABOUT FACTORS YOU SHOULD CONSIDER BEFORE BUYING THE NOTES OR OUR COMMON STOCK. ------------------------------------------------ Neither the Securities and Exchange Commission nor any other regulatory body has approved or disapproved of these securities or passed upon the adequacy or accuracy of this prospectus. Any representation to the contrary is a criminal offense. ------------------------------------------------ The table and related notes, and the paragraph immediately following the table and related notes, appearing in the prospectus under the heading "Selling Securityholders" is superseded by the following table and related notes, and the following paragraph immediately following the table and related notes:

PRINCIPAL PRINCIPAL AMOUNT OF AMOUNT OF COMMON NOTES NOTES OWNED STOCK OWNED BENEFICIALLY COMMON STOCK COMMON AFTER AFTER OWNED AND BENEFICIALLY STOCK COMPLETION COMPLETION NAME OFFERED(1) OWNED(2) OFFERED OF OFFERING OF OFFERING ------------------------------------------------ -------------- -------------- ---------- ----------- -------------- 1976 Distribution Trust FBO A.R. Lander / Zinterhofer 14,000 284 284 0 0 1976 Distribution Trust FBO Jane A. Lander 14,000 284 284 0 0 AAM / Zazove Institutional Income Fund, L.P. (BS) 1,000,000 20,356 20,356 0 0 AFTRA Health Fund 75,000 1,526 1,526 0 0 Alexandra Global Investment Fund 1, Ltd. 2,500,000 50,890 50,890 0 0 American Motorist Insurance Company 489,000 9,954 9,954 0 0 Arapahoe County Colorado 48,000 977 977 0 0 Argent Classic Convertible Arbitrage Fund (Bermuda) Ltd. 7,000,000 142,493 142,493 0 0 Argent Convertible Arbitrage Fund Ltd. 4,000,000 81,424 81,424 0 0 BP Amoco PLC, Master Trust 1,072,000 21,821 21,821 0 0 British Virgin Islands Social Security Board 36,000 732 732 0 0 Brown & Williamson Tobacco Retirement Trust 25,000 508 508 0 0 Century National Insurance Company 500,000 10,178 10,178 0 0 City of New Orleans 201,000 4,091 4,091 0 0 Deutsche Banc Alex Brown Inc 15,125,000 307,888 307,888 0 0 Employee Benefit Convertible Securities Fund (Custodian DTC #955 Bank of America Personal Trust) 175,000 3,562 3,562 0 0 Fidelity Financial Trust: Fidelity Convertible Securities Fund 5,500,000 111,959 111,959 0 0 First Union Securities Inc. 2,025,000 41,221 41,221 0 0 FIST Convertible Securities Fund 1,500,000 30,534 30,534 0 0 Forest Alternative Strategies Fund II L.P. ASM 25,000 508 508 0 0 Forest Global Convertible Fund A-5 1,755,000 35,725 35,725 0 0 HFR Master Fund Ltd. 120,000 2,442 2,442 0 0 Highbridge International LLC 6,852,000 139,480 139,480 0 0 Hotel Union & Hotel Industry of Hawaii 373,000 7,592 7,592 0 0 Jefferies & Company Inc. 8,000 162 162 0 0 JMG Capital Partners, LP 3,500,000 71,246 71,246 0 0 JMG Triton Offshore Fund Ltd. 3,500,000 71,246 71,246 0 0 J.P. Morgan Securities, Inc. 500,000 10,178 10,178 0 0 KBC Financial Products USA 2,500,000 50,890 50,890 0 0 Lehman Brothers Inc. 20,000,000 407,124 407,124 0 0 Lipper Convertibles L.P. 1,000,000 20,356 20,356 0 0 LLT Limited 100,000 2,035 2,035 0 0 Local Initiatives Support Corporation 46,000 936 936 0 0 Mainstay Convertible Fund 1,400,000 28,498 28,498 0 0 Mainstay VP Convertible Portfolio 350,000 7,124 7,124 0 0 Merrill Lynch Insurance Group 246,000 5,007 5,007 0 0 Nabisco Holdings 29,000 590 590 0 0 Nations Convertible Securities Fund (Custodian DTC #901 Bank of New York) 3,575,000 72,773 72,773 0 0 New Orleans Firefighters Pension / Relief Fund 106,000 2,157 2,157 0 0 New York Life Insurance and Annuity Corporation 1,000,000 20,356 20,356 0 0 New York Life Insurance Company 9,000,000 183,206 183,206 0 0 New York Life Separate Account #7 150,000 3,053 3,053 0 0

PRINCIPAL PRINCIPAL AMOUNT OF AMOUNT OF COMMON NOTES NOTES OWNED STOCK OWNED BENEFICIALLY COMMON STOCK COMMON AFTER AFTER OWNED AND BENEFICIALLY STOCK COMPLETION COMPLETION NAME OFFERED(1) OWNED(2) OFFERED OF OFFERING OF OFFERING ------------------------------------------------ -------------- -------------- ---------- ----------- -------------- Occidental Petroleum Corporation 194,000 3,949 3,949 0 0 Oppenheimer Convertible Securities Fund 3,000,000 61,068 61,068 0 0 Pacific Life Insurance Company 1,000,000 20,356 20,356 0 0 Parker-Hannifin Corporation 37,000 753 753 0 0 Pro-Mutual 685,000 13,944 13,944 0 0 Putnam Asset Allocation Funds-Balanced Portfolio 150,000 3,053 3,053 0 0 Putnam Asset Allocation Funds-Conservative Portfolio 89,000 1,811 1,811 0 0 Putnam Convertible Income-Growth Trust 2,000,000 40,712 40,712 0 0 Putnam Convertible Opportunities and IncomeTrust 49,000 997 997 0 0 Putnam High Income Convertible and Bond Fund 300,000 6,106 6,106 0 0 Raytheon Master Pension Trust 529,000 10,768 10,768 0 0 RBC Capital Services, Inc. c/o Forest Investment Mngt., L.L.C. 20,000 407 407 0 0 RJR Reynolds 92,000 1,872 1,872 0 0 Robertson Stephens 6,000,000 122,137 122,137 0 0 Rockhaven Premier Dividend Fund 590,000 12,010 12,010 0 0 San Diego County Employees Retirement Association 2,100,000 42,748 42,748 0 0 SG Cowen Securities Corporation 2,000,000 40,712 40,712 0 0 Shell Pension Trust 428,000 8,712 8,712 0 0 Smithfield Trust Company 10,000 203 203 0 0 State of Maryland Retirement System 2,509,000 51,073 51,073 0 0 The City University of New York 119,000 2,422 2,422 0 0 The Grable Foundation 91,000 1,852 1,852 0 0 The Grady Hospital Foundation 103,000 2,096 2,096 0 0 Tribeca Investment LLC 8,000,000 162,849 162,849 0 0 University of Rochester 19,000 386 386 0 0 Viacom Inc. Pension Plan Master Trust 47,000 956 956 0 0 Zurich Master Hedge Fund c/o Forest Investment Mngt., L.L.C. 100,000 2,035 2,035 0 0

(1) Amounts indicated may be in excess of the total amount registered due to sales or transfers exempt from the registration requirements of the Securities Act since the date upon which the selling holders provided to us the information regarding their notes and common stock. (2) Unless otherwise noted, represents shares of common stock issuable upon conversion of notes. With the exception of J.P. Morgan Securities, Inc., Lehman Brothers Inc. and Morgan Stanley & Co., none of the selling holders nor any of their affiliates, officers, directors or principal equity holders has held any position or office or has had any material relationship with us within the past three years. J. P. Morgan Securities, Inc., Lehman Brothers Inc. and Morgan Stanley & Co. were initial purchasers of the notes. The selling holders purchased the notes in private transactions on or after December 13, 2000. The date of this prospectus supplement is June 4, 2001.