424B3 1 a424b3.txt 424B3 STICKER PROSPECTUS SUPPLEMENT DATED AUGUST 8, 2000 FILED PURSUANT TO RULE 424(b)(3) TO PROSPECTUS DATED JULY 11, 2000 REGISTRATION NO. 333-36790 CUSIP NO. 00826TAD0 AFFYMETRIX, INC. $225,000,000 4 3/4% CONVERTIBLE SUBORDINATED NOTES DUE 2007 AND 700,943 SHARES OF COMMON STOCK ISSUABLE UPON CONVERSION OF THE NOTES This prospectus supplement supplements information contained in the prospectus dated July 11, 2000 relating to the potential sale from time to time of up to $225,000,000 aggregate amount of notes and the common stock into which the notes are convertible. This prospectus supplement is not complete without, and may not be delivered or utilized except in connection with, the prospectus, including any amendments or supplements to it. The following table supplements the information set forth in the prospectus under the caption "Selling Security Holders" with respect to the selling holders and the respective principal amounts of notes beneficially owned by the selling holders that may be offered pursuant to the prospectus, as amended or supplemented:
PRINCIPAL AMOUNT COMMON STOCK COMMON STOCK OF NOTES ISSUABLE UPON OWNED AFTER BENEFICIALLY OWNED CONVERSION OF COMMON STOCK COMPLETION OF NAME AND OFFERED THE NOTES OFFERED THE OFFERING ---- ------------------ ------------- ------------- ------------- City University of New York............. 42,000 130 130 -- GLG Global Convertible Fund............. 3,360,000 10,467 10,467 -- GLG Global Convertible UCITS Fund....... 890,000 2,772 2,772 -- Grady Hospital Foundation............... 66,000 205 205 -- ING Barings LLC......................... 50,000 155 155 -- J.P. Morgan Securities Inc.............. 73,000 227 227 -- Merrill Lynch Insurance Group........... 92,000 286 286 -- Morgan Stanley & Co..................... 753,000 2,345 2,345 -- New Orleans Firefighters Pension / Relief Fund........................... 69,000 214 214 -- 1976 Distribution Trust FBO A.R. Lauder / Zinterhofer......................... 9,000 28 28 -- 1976 Distribution Trust FBO Jane A. Lauder................................ 9,000 28 28 -- Occidental Petroleum Corporation........ 117,000 364 364 -- Partner Reinsurance Company Ltd......... 365,000 1,137 1,137 -- State of Maryland Retirement Agency..... 1,596,000 4,971 4,971 --
The line items "Baptist Health of South Florida... $296,000, 922, 922, --"; "Nicholas-Applegate Convertible Fund... $1,917,000, 5,972, 5,972, --"; "Oppenheimer Convertible Securities Fund... $8,000,000, 24,922, 24,922, --"; "Pilgrim Convertible Fund... $9,000,000, 28,037, 28,037, --" and "Wake Forest University... $2,056,000, 6,405, 6,405, --" contained in the table set forth in the prospectus under the caption "Selling Security Holders" shall be deleted in their entirety and replaced with the following:
Baptist Health of South Florida......... 343,000 1,068 1,068 -- Nicholas-Applegate Convertible Fund..... 2,422,000 7,545 7,545 -- Oppenheimer Convertible Securities Fund.................................. 10,000,000 31,152 31,152 -- Pilgrim Convertible Fund................ 8,015,000 24,968 24,968 -- Wake Forest University.................. 1,639,000 5,105 5,105 --
None of the above 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, except that ING Barings LLC and Merrill Lynch, Pierce, Fenner & Smith Incorporated were initial purchasers in connection with the offer and sale of the notes in February 2000 and from time to time perform investment banking services, for which they receive customary fees.