X0202 4 2004-08-24 0 0001101239 EQUINIX INC EQIX 0001104329 CROSSLINK CAPITAL INC TWO EMBARCADERO CENTER SUITE 2200 SAN FRANCISCO CA 94111 1 0 1 1 Affiliate of Director 0001242237 CROSSLINK VENTURES IV HOLDINGS LLC 1 0 1 1 Affiliate of Director 0001242264 CROSSLINK VERWALTUNGS GMBH 1 0 1 1 Affiliate of Director 0001242229 CROSSOVER FUND III MANAGMENT LLC 1 0 1 1 Affiliate of Director 0001242239 STARK MICHAEL J 1 0 1 1 Affiliate of Director 0001242242 BLISKA THOMAS EDWARD 1 0 1 1 Affiliate of Director 0001242244 DUNN DANIEL JOHN 1 0 1 1 Affiliate of Director 0001240055 HROMADKO GARY 301 VELOCITY WAY 5TH FLOOR FOSTER CITY CA 94404 1 0 1 1 Affiliate of Director 0001242241 JACIMOVIC VLADIMIR S 1 0 1 1 Affiliate of Director 0001242240 KAUFMAN SEYMOUR F 1 0 1 1 Affiliate of Director Common Stock 2004-08-24 4 S 0 8400 32.3517 D 2169854 I See Notes Common Stock 2004-08-24 4 S 0 1600 32.3517 D 2168254 I See Notes Common Stock 2004-08-25 4 S 0 878 31.8678 D 2146437 I See Notes The reporting persons (the "Reporting Persons") are Crosslink Capital, Inc. ("Crosslink"), Crossover Fund III Management, L.L.C. ("Crossover III Management"), Crosslink Ventures IV Holdings, L.L.C. ("Ventures IV Holdings"), Crosslink Verwaltungs GmbH ("Verwaltungs"), Michael J. Stark, Seymour F. Kaufman, Vladimir S. Jacimovic, Daniel John Dunn, Thomas Edward Bliska and Gary Hromadko. Crosslink is an investment adviser to investment funds of which Crossover III Management, Ventures IV Holdings or Verwaltungs is the general partner, manager or the holder of Class B Units, and other investment funds. Crossover III Management is also the investment adviser to investment funds. Mr. Stark and Mr. Kaufman are control persons of Crosslink. Mr. Stark, Mr. Kaufman, Mr. Bliska, Mr. Dunn and Mr. Jacimovic are control persons of Crossover III Management. Mr. Stark and Mr. Jacimovic are control persons of Ventures IV Holdings and Verwaltungs. Mr. Hromadko is a member of the Issuer's board of directors and serves as the representative of the Reporting Persons. Crosslink, Crossover III Management, Ventures IV Holdings, Verwaltungs, Mr. Stark, Mr. Kaufman, Mr. Jacimovic, Mr. Dunn, Mr. Bliska and Mr. Hromadko are filing this Form 4 jointly as a group, but disclaim membership in a group, within the meaning of Rule 13d-5(b) under the Securities Exchange Act of 1934, as amended (the "Exchange Act"), with any other person. These securities are held directly by investment funds to which Crosslink or Crossover III Management is investment adviser for the benefit of the investors in those funds. These securities are indirectly beneficially owned by Crosslink or Crossover III Management as the investment adviser to each of the Funds, by Crossover III Management, Ventures IV Holdings and Verwaltungs as the general partner, manager or holder of Class B Units of each of the Funds, and by Mr. Stark, Mr. Kaufman, Mr. Jacimovic, Mr. Bliska and Mr. Dunn as the various control persons of those entities. The Reporting Persons disclaim beneficial ownership of such securities except to the extent of their respective pecuniary interest therein. No client account of Crosslink or Crossover III Management holds more than ten percent of the outstanding stock of the Issuer. The shares reported in Column 5 include 21,817 shares beneficially owned directly by the Reporting Persons. The securities sold in the reported transaction were beneficially owned directly by Mr. Jacimovic. The shares reported in Column 5 are beneficially owned by him indirectly as described in note 4. Crosslink Capital, Inc. by Michael J. Stark, President 2004-08-26 Crossover Fund III Management, L.L.C. by Michael J. Stakr, Senior Fund Manager 2004-08-26 Crosslink Ventures IV Holdings, L.L.C. by Michael J. Stark, Senior Fund Manager 2004-08-26 Crosslink Verwaltungs GmbH by Michael J. Stark, Managing Director 2004-08-26 Michael J. Stark 2004-08-26 Seymour F. Kaufman 2004-08-26 Thomas Edward Bliska 2004-08-26 Daniel John Dunn 2004-08-26 Vladimir S. Jacimovic 2004-08-26 Gary Hromadko 2004-08-26