-----BEGIN PRIVACY-ENHANCED MESSAGE----- Proc-Type: 2001,MIC-CLEAR Originator-Name: webmaster@www.sec.gov Originator-Key-Asymmetric: MFgwCgYEVQgBAQICAf8DSgAwRwJAW2sNKK9AVtBzYZmr6aGjlWyK3XmZv3dTINen TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB MIC-Info: RSA-MD5,RSA, VNDNTx/bDeXZmYdG6jsONlFct5K+GZeuY81VFksZhp5gCK3r3jDoiLohBDaJ0oXy Xbpfv8uuBZum9KUXIz6RIQ== 0000950005-00-000251.txt : 20000215 0000950005-00-000251.hdr.sgml : 20000215 ACCESSION NUMBER: 0000950005-00-000251 CONFORMED SUBMISSION TYPE: SC 13G PUBLIC DOCUMENT COUNT: 1 FILED AS OF DATE: 20000214 SUBJECT COMPANY: COMPANY DATA: COMPANY CONFORMED NAME: CACHEFLOW INC CENTRAL INDEX KEY: 0001095600 STANDARD INDUSTRIAL CLASSIFICATION: SERVICES-COMPUTER INTEGRATED SYSTEMS DESIGN [7373] IRS NUMBER: 911715963 STATE OF INCORPORATION: DE FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: SC 13G SEC ACT: SEC FILE NUMBER: 005-57213 FILM NUMBER: 537654 BUSINESS ADDRESS: STREET 1: 650 ALMANOR AVENUE CITY: SUNNYVALE STATE: CA ZIP: 94086 BUSINESS PHONE: 4082202200 MAIL ADDRESS: STREET 1: 650 ALMANOR AVE CITY: SUNNYVALE STATE: CA ZIP: 94086 FILED BY: COMPANY DATA: COMPANY CONFORMED NAME: US VENTURE PARTNERS V LP CENTRAL INDEX KEY: 0001106516 STANDARD INDUSTRIAL CLASSIFICATION: [] IRS NUMBER: 943247775 STATE OF INCORPORATION: DE FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: SC 13G BUSINESS ADDRESS: STREET 1: 2180 SAN HILL ROAD STREET 2: SUITE 300 CITY: MENLO PARK STATE: CA ZIP: 94025 BUSINESS PHONE: 6509267753 MAIL ADDRESS: STREET 1: 2180 SAND HILL ROAD STREET 2: SUITE 300 CITY: MENLO PARK STATE: CA ZIP: 94025 SC 13G 1 FORM SC 13G UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON D.C. 20549 SCHEDULE 13G (Rule 13d-102) INFORMATION TO BE INCLUDED IN STATEMENTS FILED PURSUANT TO RULES 13d-1 (b), (c) AND (d) AND AMENDMENTS THERETO FILED PURSUANT TO 13d-2(b) (Amendment No. ___)* CacheFlow, Inc. ------------------------ (Name of Issuer) Common Stock ------------------------------ (Title of Class of Securities) 126946102 -------------- (CUSIP Number) December 31, 1999 ------------------------------------------------------- (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant to which this Schedule is filed: [ ] Rule 13d-1(b) [ ] Rule 13d-1(c) [X] Rule 13d-1(d) *The remainder of this cover page shall be filled out for a reporting person's initial filing on this form with respect to the subject class of securities, and for any subsequent amendment containing information which would alter the disclosures provided in a prior cover page. The information required in the remainder of this cover page shall not be deemed to be "filed" for the purpose of Section 18 of the Securities Exchange Act of 1934 ("Act") or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act (however, see the Notes). (Continued on following pages) Page 1 of 23 Pages CUSIP NO. 126946102 PAGE 2 OF 23 PAGES - ------------------- ------------------ 1 NAMES OF REPORTING PERSONS S.S. OR I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS U.S. Venture Partners V, L.P. ("USVP V") Tax ID Number: 94-3247775 ----------------------------------------------------------------------------- 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) [ ] (b) [X] ----------------------------------------------------------------------------- 3 SEC USE ONLY ----------------------------------------------------------------------------- 4 CITIZENSHIP OR PLACE OF ORGANIZATION Delaware ----------------------------------------------------------------------------- 5 SOLE VOTING POWER 2,822,888 shares, except that Presidio Management Group V, L.L.C. ("PMG V"), the general partner of USVP V, may be deemed to have sole voting power with respect to such shares, and Federman, Friend, Green, Krausz, Lanza, Phillips, Root and Young, the managing members of PMG V, may be deemed to have shared voting power with respect to such shares. NUMBER OF ------------------------------------------------------------ SHARES 6 SHARED VOTING POWER BENEFICIALLY OWNED BY See Response to row 5. EACH ------------------------------------------------------------ REPORTING 7 SOLE DISPOSITIVE POWER PERSON WITH 2,822,888 shares, except that Presidio Management Group V, L.L.C. ("PMG V"), the general partner of USVP V, may be deemed to have sole dipositive power with respect to such shares, and Federman, Friend, Green, Krausz, Lanza, Phillips, Root and Young, the managing members of PMG V, may be deemed to have shared dispositive power with respect to such shares. ------------------------------------------------------------ 8 SHARED DISPOSITIVE POWER See Response to row 7. ------------------------------------------------------------ 9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 2,822,888 ---------------------------------------------------------------------------- 10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES* [ ] ----------------------------------------------------------------------------- 11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9) 7.9% ----------------------------------------------------------------------------- 12 TYPE OF REPORTING PERSON* PN ----------------------------------------------------------------------------- *See Instructions Before Filling Out! CUSIP NO. 126946102 PAGE 3 OF 23 PAGES - ------------------- ------------------ 1 NAMES OF REPORTING PERSONS S.S. OR I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS USVP V International, L.P. ("V Int'l") Tax ID Number: 94-3250265 ----------------------------------------------------------------------------- 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) [ ] (b) [X] ----------------------------------------------------------------------------- 3 SEC USE ONLY ----------------------------------------------------------------------------- 4 CITIZENSHIP OR PLACE OF ORGANIZATION Cayman Islands ----------------------------------------------------------------------------- 5 SOLE VOTING POWER 156,828 shares, except that Presidio Management Group V, L.L.C. ("PMG V"), the general partner of V Int'l, may be deemed to have sole voting power with respect to such shares, and Federman, Friend, Green, Krausz, Lanza, Phillips, Root and Young, the managing members of PMG V, may be deemed to have shared voting power with respect to such shares. NUMBER OF ------------------------------------------------------------ SHARES 6 SHARED VOTING POWER BENEFICIALLY OWNED BY See Response to row 5. EACH ------------------------------------------------------------ REPORTING 7 SOLE DISPOSITIVE POWER PERSON WITH 156,828 shares, except that Presidio Management Group V, L.L.C. ("PMG V"), the general partner of V Int'l, may be deemed to have sole dipositive power with respect to such shares, and Federman, Friend, Green, Krausz, Lanza, Phillips, Root and Young, the managing members of PMG V, may be deemed to have shared dispositive power with respect to such shares. ------------------------------------------------------------ 8 SHARED DISPOSITIVE POWER See Response to row 7. ------------------------------------------------------------ 9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 156,828 ---------------------------------------------------------------------------- 10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES* [ ] ----------------------------------------------------------------------------- 11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9) 0.4% ----------------------------------------------------------------------------- 12 TYPE OF REPORTING PERSON* PN ----------------------------------------------------------------------------- *See Instructions Before Filling Out! CUSIP NO. 126946102 PAGE 4 OF 23 PAGES - ------------------- ------------------ 1 NAMES OF REPORTING PERSONS S.S. OR I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS USVP V Entrepreneur Partners, L.P. ("EP V") Tax ID Number: 94-3261653 ----------------------------------------------------------------------------- 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) [ ] (b) [X] ----------------------------------------------------------------------------- 3 SEC USE ONLY ----------------------------------------------------------------------------- 4 CITIZENSHIP OR PLACE OF ORGANIZATION Delaware ----------------------------------------------------------------------------- 5 SOLE VOTING POWER 69,006 shares, except that Presidio Management Group V, L.L.C. ("PMG V"), the general partner of EP V, may be deemed to have sole voting power with respect to such shares, and Federman, Friend, Green, Krausz, Lanza, Phillips, Root and Young, the managing members of PMG V, may be deemed to have shared voting power with respect to such shares. NUMBER OF ------------------------------------------------------------ SHARES 6 SHARED VOTING POWER BENEFICIALLY OWNED BY See Response to row 5. EACH ------------------------------------------------------------ REPORTING 7 SOLE DISPOSITIVE POWER PERSON WITH 69,006 shares, except that Presidio Management Group V, L.L.C. ("PMG V"), the general partner of EP V, may be deemed to have sole dipositive power with respect to such shares, and Federman, Friend, Green, Krausz, Lanza, Phillips, Root and Young, the managing members of PMG V, may be deemed to have shared dispositive power with respect to such shares. ------------------------------------------------------------ 8 SHARED DISPOSITIVE POWER See Response to row 7. ------------------------------------------------------------ 9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 69,006 ---------------------------------------------------------------------------- 10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES* [ ] ----------------------------------------------------------------------------- 11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9) 0.2% ----------------------------------------------------------------------------- 12 TYPE OF REPORTING PERSON* PN ----------------------------------------------------------------------------- *See Instructions Before Filling Out! CUSIP NO. 126946102 PAGE 5 OF 23 PAGES - ------------------- ------------------ 1 NAMES OF REPORTING PERSONS S.S. OR I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS 2180 Associates Fund V, L.P. ("2180 V") Tax ID Number: 94-3249822 ----------------------------------------------------------------------------- 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) [ ] (b) [X] ----------------------------------------------------------------------------- 3 SEC USE ONLY ----------------------------------------------------------------------------- 4 CITIZENSHIP OR PLACE OF ORGANIZATION Delaware ----------------------------------------------------------------------------- 5 SOLE VOTING POWER 87,824 shares, except that Presidio Management Group V, L.L.C. ("PMG V"), the general partner of 2180 V, may be deemed to have sole voting power with respect to such shares, and Federman, Friend, Green, Krausz, Lanza, Phillips, Root and Young, the managing members of PMG V, may be deemed to have shared voting power with respect to such shares. NUMBER OF ------------------------------------------------------------ SHARES 6 SHARED VOTING POWER BENEFICIALLY OWNED BY See Response to row 5. EACH ------------------------------------------------------------ REPORTING 7 SOLE DISPOSITIVE POWER PERSON WITH 87,824 shares, except that Presidio Management Group V, L.L.C. ("PMG V"), the general partner of 2180 V, may be deemed to have sole dispositive power with respect to such shares, and Federman, Friend, Green, Krausz, Lanza, Phillips, Root and Young, the managing members of PMG V, may be deemed to have shared dispositive power with respect to such shares. ------------------------------------------------------------ 8 SHARED DISPOSITIVE POWER See Response to row 7. ------------------------------------------------------------ 9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 87,824 ---------------------------------------------------------------------------- 10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES* [ ] ----------------------------------------------------------------------------- 11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9) 0.2% ----------------------------------------------------------------------------- 12 TYPE OF REPORTING PERSON* PN ----------------------------------------------------------------------------- *See Instructions Before Filling Out! CUSIP NO. 126946102 PAGE 6 OF 23 PAGES - ------------------- ------------------ 1 NAMES OF REPORTING PERSONS S.S. OR I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS Presidio Management Group V, L.L.C ("PMG V") Tax ID Number: 94-3247774 ----------------------------------------------------------------------------- 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) [ ] (b) [X] ----------------------------------------------------------------------------- 3 SEC USE ONLY ----------------------------------------------------------------------------- 4 CITIZENSHIP OR PLACE OF ORGANIZATION Delaware ----------------------------------------------------------------------------- 5 SOLE VOTING POWER 3,136,546 shares, of which 2,822,888 are shares directly owned by USVP V, 156,828 are shares directly owned by V Int'l, 69,006 are shares directly owned by EP V and 87,824 shares directly owned by 2180 V. PMG V is the general partner of USVP V, V Int'l, EP V and 2180 V and may be deemed to have sole voting power with respect to such shares, and Federman, Friend, Green, Krausz, Lanza, Phillips, Root and Young, the managing members of PMG V, may be deemed to have shared voting power with respect to such shares. NUMBER OF ------------------------------------------------------------ SHARES 6 SHARED VOTING POWER BENEFICIALLY OWNED BY See Response to row 5. EACH ------------------------------------------------------------ REPORTING 7 SOLE DISPOSITIVE POWER PERSON WITH 3,136,546 shares, of which 2,822,888 are shares directly owned by USVP V, 156,828 are shares directly owned by V Int'l, 69,006 are shares directly owned by EP V and 87,824 shares directly owned by 2180 V. PMG V is the general partner of USVP V, V Int'l, EP V and 2180 V and may be deemed to have sole voting power with respect to such shares, and Federman, Friend, Green, Krausz, Lanza, Phillips, Root and Young, the managing members of PMG V, may be deemed to have shared managing members with respect to such shares. ------------------------------------------------------------ 8 SHARED DISPOSITIVE POWER See Response to row 7. ------------------------------------------------------------ 9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 3,136,546 ---------------------------------------------------------------------------- 10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES* [ ] ----------------------------------------------------------------------------- 11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9) 8.7% ----------------------------------------------------------------------------- 12 TYPE OF REPORTING PERSON* 00 ----------------------------------------------------------------------------- *See Instructions Before Filling Out! CUSIP NO. 126946102 PAGE 7 OF 23 PAGES - ------------------- ------------------ 1 NAMES OF REPORTING PERSONS S.S. OR I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS Irwin Federman ("Federman") Tax ID Number: ----------------------------------------------------------------------------- 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) [ ] (b) [X] ----------------------------------------------------------------------------- 3 SEC USE ONLY ----------------------------------------------------------------------------- 4 CITIZENSHIP OR PLACE OF ORGANIZATION U.S. Citizen ----------------------------------------------------------------------------- 5 SOLE VOTING POWER 0 shares. NUMBER OF ------------------------------------------------------------ SHARES 6 SHARED VOTING POWER BENEFICIALLY OWNED BY 3,136,546 shares, of which 2,822,888 are shares directly EACH owned by USVP V, 156,828 are shares directly owned by V REPORTING Int'l, 69,006 are shares directly owned by EP V and 87,824 PERSON are shares directly owned by 2180 V. Federman is a managing WITH member of PMG V, the general partner of USVP V, V Int'l, EP V and 2180 V, and may be deemed to have shared voting power with respect to such shares. ------------------------------------------------------------ 7 SOLE DISPOSITIVE POWER 0 shares. ------------------------------------------------------------ 8 SHARED DISPOSITIVE POWER 3,136,546 shares, of which 2,822,888 are shares directly owned by USVP V, 156,828 are shares directly owned by V Int'l, 69,006 are shares directly owned by EP V and 87,824 are shares directly owned by 2180 V. Federman is a managing member of PMG V, the general partner of USVP V, V Int'l, EP V and 2180 V, and may be deemed to have shared dispositive power with respect to such shares. ------------------------------------------------------------ 9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 3,136,546 ---------------------------------------------------------------------------- 10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES* [ ] ----------------------------------------------------------------------------- 11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9) 8.7% ----------------------------------------------------------------------------- 12 TYPE OF REPORTING PERSON* IN ----------------------------------------------------------------------------- *See Instructions Before Filling Out! CUSIP NO. 126946102 PAGE 8 OF 23 PAGES - ------------------- ------------------ 1 NAMES OF REPORTING PERSONS S.S. OR I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS Marc A. Friend ("Friend") Tax ID Number: ----------------------------------------------------------------------------- 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) [ ] (b) [X] ----------------------------------------------------------------------------- 3 SEC USE ONLY ----------------------------------------------------------------------------- 4 CITIZENSHIP OR PLACE OF ORGANIZATION U.S. Citizen ----------------------------------------------------------------------------- 5 SOLE VOTING POWER 0 shares. NUMBER OF ------------------------------------------------------------ SHARES 6 SHARED VOTING POWER BENEFICIALLY OWNED BY 3,136,546 shares, of which 2,822,888 are shares directly EACH owned by USVP V, 156,828 are shares directly owned by V REPORTING Int'l, 69,006 are shares directly owned by EP V and 87,824 PERSON are shares directly owned by 2180 V. Friend is a managing WITH member of PMG V, the general partner of USVP V, V Int'l, EP V and 2180 V, and may be deemed to have shared voting power with respect to such shares. ------------------------------------------------------------ 7 SOLE DISPOSITIVE POWER 0 shares. ------------------------------------------------------------ 8 SHARED DISPOSITIVE POWER 3,136,546 shares, of which 2,822,888 are shares directly owned by USVP V, 156,828 are shares directly owned by V Int'l, 69,006 are shares directly owned by EP V and 87,824 are shares directly owned by 2180 V. Friend is a managing member of PMG V, the general partner of USVP V, V Int'l, EP V and 2180 V, and may be deemed to have shared dispositive power with respect to such shares. ------------------------------------------------------------ 9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 3,136,546 ---------------------------------------------------------------------------- 10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES* [ ] ----------------------------------------------------------------------------- 11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9) 8.7% ----------------------------------------------------------------------------- 12 TYPE OF REPORTING PERSON* IN ----------------------------------------------------------------------------- *See Instructions Before Filling Out! CUSIP NO. 126946102 PAGE 9 OF 23 PAGES - ------------------- ------------------ 1 NAMES OF REPORTING PERSONS S.S. OR I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS Jason E. Green ("Green") Tax ID Number: ----------------------------------------------------------------------------- 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) [ ] (b) [X] ----------------------------------------------------------------------------- 3 SEC USE ONLY ----------------------------------------------------------------------------- 4 CITIZENSHIP OR PLACE OF ORGANIZATION U.S. Citizen ----------------------------------------------------------------------------- 5 SOLE VOTING POWER 0 shares. NUMBER OF ------------------------------------------------------------ SHARES 6 SHARED VOTING POWER BENEFICIALLY OWNED BY 3,136,546 shares, of which 2,822,888 are shares directly EACH owned by USVP V, 156,828 are shares directly owned by V REPORTING Int'l, 69,006 are shares directly owned by EP V and 87,824 PERSON are shares directly owned by 2180 V. Green is a managing WITH member of PMG V, the general partner of USVP V, V Int'l, EP V and 2180 V, and may be deemed to have shared voting power with respect to such shares. ------------------------------------------------------------ 7 SOLE DISPOSITIVE POWER 0 shares. ------------------------------------------------------------ 8 SHARED DISPOSITIVE POWER 3,136,546 shares, of which 2,822,888 are shares directly owned by USVP V, 156,828 are shares directly owned by V Int'l, 69,006 are shares directly owned by EP V and 87,824 are shares directly owned by 2180 V. Green is a managing member of PMG V, the general partner of USVP V, V Int'l, EP V and 2180 V, and may be deemed to have shared dispositive power with respect to such shares. ------------------------------------------------------------ 9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 3,136,546 ---------------------------------------------------------------------------- 10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES* [ ] ----------------------------------------------------------------------------- 11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9) 8.7% ----------------------------------------------------------------------------- 12 TYPE OF REPORTING PERSON* IN ----------------------------------------------------------------------------- *See Instructions Before Filling Out! CUSIP NO. 126946102 PAGE 10 OF 23 PAGES - ------------------- ------------------- 1 NAMES OF REPORTING PERSONS S.S. OR I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS Steven M. Krausz ("Krausz") Tax ID Number: ----------------------------------------------------------------------------- 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) [ ] (b) [X] ----------------------------------------------------------------------------- 3 SEC USE ONLY ----------------------------------------------------------------------------- 4 CITIZENSHIP OR PLACE OF ORGANIZATION U.S. Citizen ----------------------------------------------------------------------------- 5 SOLE VOTING POWER 0 shares. NUMBER OF ------------------------------------------------------------ SHARES 6 SHARED VOTING POWER BENEFICIALLY OWNED BY 3,136,546 shares, of which 2,822,888 are shares directly EACH owned by USVP V, 156,828 are shares directly owned by V REPORTING Int'l, 69,006 are shares directly owned by EP V and 87,824 PERSON are shares directly owned by 2180 V. Krausz is a managing WITH member of PMG V, the general partner of USVP V, V Int'l, EP V and 2180 V, and may be deemed to have shared voting power with respect to such shares. ------------------------------------------------------------ 7 SOLE DISPOSITIVE POWER 0 shares. ------------------------------------------------------------ 8 SHARED DISPOSITIVE POWER 3,136,546 shares, of which 2,822,888 are shares directly owned by USVP V, 156,828 are shares directly owned by V Int'l, 69,006 are shares directly owned by EP V and 87,824 are shares directly owned by 2180 V. Krausz is a managing member of PMG V, the general partner of USVP V, V Int'l, EP V and 2180 V, and may be deemed to have shared dispositive power with respect to such shares. ------------------------------------------------------------ 9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 3,136,546 ---------------------------------------------------------------------------- 10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES* [ ] ----------------------------------------------------------------------------- 11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9) 8.7% ----------------------------------------------------------------------------- 12 TYPE OF REPORTING PERSON* IN ----------------------------------------------------------------------------- *See Instructions Before Filling Out! CUSIP NO. 126946102 PAGE 11 OF 23 PAGES - ------------------- ------------------- 1 NAMES OF REPORTING PERSONS S.S. OR I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS Lucio Lanza ("Lanza") Tax ID Number: ----------------------------------------------------------------------------- 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) [ ] (b) [X] ----------------------------------------------------------------------------- 3 SEC USE ONLY ----------------------------------------------------------------------------- 4 CITIZENSHIP OR PLACE OF ORGANIZATION U.S. Citizen ----------------------------------------------------------------------------- 5 SOLE VOTING POWER 0 shares. NUMBER OF ------------------------------------------------------------ SHARES 6 SHARED VOTING POWER BENEFICIALLY OWNED BY 3,136,546 shares, of which 2,822,888 are shares directly EACH owned by USVP V, 156,828 are shares directly owned by V REPORTING Int'l, 69,006 are shares directly owned by EP V and 87,824 PERSON are shares directly owned by 2180 V. Lanza is a managing WITH member of PMG V, the general partner of USVP V, V Int'l, EP V and 2180 V, and may be deemed to have shared voting power with respect to such shares. ------------------------------------------------------------ 7 SOLE DISPOSITIVE POWER 0 shares. ------------------------------------------------------------ 8 SHARED DISPOSITIVE POWER 3,136,546 shares, of which 2,822,888 are shares directly owned by USVP V, 156,828 are shares directly owned by V Int'l, 69,006 are shares directly owned by EP V and 87,824 are shares directly owned by 2180 V. Lanza is a managing member of PMG V, the general partner of USVP V, V Int'l, EP V and 2180 V, and may be deemed to have shared dispositive power with respect to such shares. ------------------------------------------------------------ 9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 3,136,546 ---------------------------------------------------------------------------- 10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES* [ ] ----------------------------------------------------------------------------- 11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9) 8.7% ----------------------------------------------------------------------------- 12 TYPE OF REPORTING PERSON* IN ----------------------------------------------------------------------------- *See Instructions Before Filling Out! CUSIP NO. 126946102 PAGE 12 OF 23 PAGES - ------------------- ------------------- 1 NAMES OF REPORTING PERSONS S.S. OR I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS Stuart G. Phillips ("Phillips") Tax ID Number: ----------------------------------------------------------------------------- 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) [ ] (b) [X] ----------------------------------------------------------------------------- 3 SEC USE ONLY ----------------------------------------------------------------------------- 4 CITIZENSHIP OR PLACE OF ORGANIZATION U.S. Citizen ----------------------------------------------------------------------------- 5 SOLE VOTING POWER 170,000 shares. NUMBER OF ------------------------------------------------------------ SHARES 6 SHARED VOTING POWER BENEFICIALLY OWNED BY 3,136,546 shares, of which 2,822,888 are shares directly EACH owned by USVP V, 156,828 are shares directly owned by V REPORTING Int'l, 69,006 are shares directly owned by EP V and 87,824 PERSON are shares directly owned by 2180 V. Phillips is a managing WITH member of PMG V, the general partner of USVP V, V Int'l, EP V and 2180 V, and may be deemed to have shared voting power with respect to such shares. ------------------------------------------------------------ 7 SOLE DISPOSITIVE POWER 170,000 shares. ------------------------------------------------------------ 8 SHARED DISPOSITIVE POWER 3,136,546 shares, of which 2,822,888 are shares directly owned by USVP V, 156,828 are shares directly owned by V Int'l, 69,006 are shares directly owned by EP V and 87,824 are shares directly owned by 2180 V. Phillips is a managing member of PMG V, the general partner of USVP V, V Int'l, EP V and 2180 V, and may be deemed to have shared dispositive power with respect to such shares. ------------------------------------------------------------ 9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 3,306,546 ---------------------------------------------------------------------------- 10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES* [ ] ----------------------------------------------------------------------------- 11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9) 9.2% ----------------------------------------------------------------------------- 12 TYPE OF REPORTING PERSON* IN ----------------------------------------------------------------------------- *See Instructions Before Filling Out! CUSIP NO. 126946102 PAGE 13 OF 23 PAGES - ------------------- ------------------- 1 NAMES OF REPORTING PERSONS S.S. OR I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS Jonathan D. Root ("Root") Tax ID Number: ----------------------------------------------------------------------------- 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) [ ] (b) [X] ----------------------------------------------------------------------------- 3 SEC USE ONLY ----------------------------------------------------------------------------- 4 CITIZENSHIP OR PLACE OF ORGANIZATION U.S. Citizen ----------------------------------------------------------------------------- 5 SOLE VOTING POWER 0 shares. NUMBER OF ------------------------------------------------------------ SHARES 6 SHARED VOTING POWER BENEFICIALLY OWNED BY 3,136,546 shares, of which 2,822,888 are shares directly EACH owned by USVP V, 156,828 are shares directly owned by V REPORTING Int'l, 69,006 are shares directly owned by EP V and 87,824 PERSON are shares directly owned by 2180 V. Root is a managing WITH member of PMG V, the general partner of USVP V, V Int'l, EP V and 2180 V, and may be deemed to have shared voting power with respect to such shares. ------------------------------------------------------------ 7 SOLE DISPOSITIVE POWER 0 shares. ------------------------------------------------------------ 8 SHARED DISPOSITIVE POWER 3,136,546 shares, of which 2,822,888 are shares directly owned by USVP V, 156,828 are shares directly owned by V Int'l, 69,006 are shares directly owned by EP V and 87,824 are shares directly owned by 2180 V. Root is a managing member of PMG V, the general partner of USVP V, V Int'l, EP V and 2180 V, and may be deemed to have shared dispositive power with respect to such shares. ------------------------------------------------------------ 9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 3,136,546 ---------------------------------------------------------------------------- 10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES* [ ] ----------------------------------------------------------------------------- 11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9) 8.7% ----------------------------------------------------------------------------- 12 TYPE OF REPORTING PERSON* IN ----------------------------------------------------------------------------- *See Instructions Before Filling Out! CUSIP NO. 126946102 PAGE 14 OF 23 PAGES - ------------------- ------------------- 1 NAMES OF REPORTING PERSONS S.S. OR I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS Philip M. Young ("Young") Tax ID Number: ----------------------------------------------------------------------------- 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) [ ] (b) [X] ----------------------------------------------------------------------------- 3 SEC USE ONLY ----------------------------------------------------------------------------- 4 CITIZENSHIP OR PLACE OF ORGANIZATION U.S. Citizen ----------------------------------------------------------------------------- 5 SOLE VOTING POWER 0 shares. NUMBER OF ------------------------------------------------------------ SHARES 6 SHARED VOTING POWER BENEFICIALLY OWNED BY 3,136,546 shares, of which 2,822,888 are shares directly EACH owned by USVP V, 156,828 are shares directly owned by V REPORTING Int'l, 69,006 are shares directly owned by EP V and 87,824 PERSON are shares directly owned by 2180 V. Young is a managing WITH member of PMG V, the general partner of USVP V, V Int'l, EP V and 2180 V, and may be deemed to have shared voting power with respect to such shares. ------------------------------------------------------------ 7 SOLE DISPOSITIVE POWER 0 shares. ------------------------------------------------------------ 8 SHARED DISPOSITIVE POWER 3,136,546 shares, of which 2,822,888 are shares directly owned by USVP V, 156,828 are shares directly owned by V Int'l, 69,006 are shares directly owned by EP V and 87,824 are shares directly owned by 2180 V. Young is a managing member of PMG V, the general partner of USVP V, V Int'l, EP V and 2180 V, and may be deemed to have shared dispositive power with respect to such shares. ------------------------------------------------------------ 9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 3,136,546 ---------------------------------------------------------------------------- 10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES* [ ] ----------------------------------------------------------------------------- 11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9) 8.7% ----------------------------------------------------------------------------- 12 TYPE OF REPORTING PERSON* IN ----------------------------------------------------------------------------- *See Instructions Before Filling Out! Page 15 of 23 Pages ITEM 1(a). NAME OF ISSUER: CacheFlow, Inc. ITEM 1(b). ADDRESS OF ISSUER'S PRINCIPAL EXECUTIVE OFFICES: 650 Almanor Avenue Sunnyvale, CA 94086 ITEM 2(a). NAME OF PERSON FILING: This statement is filed by U.S. Venture Partners V, L.P. ("USVP V"), USVP V International, L.P. ("V Int'l"), USVP V Entrepreneur Partners, L.P. ("EP V"), 2180 Associates Fund V, L.P. ("2180 V"), Presidio Management Group V, L.L.C. ("PMG V"), Irwin Federman ("Federman"), Marc A. Friend ("Friend"), Jason E. Green ("Green"), Steven M. Krausz ("Krausz"), Lucio Lanza ("Lanza"), Stuart G. Phillips ("Phillips"), Jonathan D. Root ("Root") and Philip M. Young ("Young"). The foregoing entities and individuals are collectively referred to as the "Reporting Persons". PMG V is the general partner of USVP V, V Int'l, EP V and 2180 V, and may be deemed to have sole power to vote and sole power to dispose of shares of the issuer directly owned by USVP V, V Int'l, EP V and 2180 V. Federman, Friend, Green, Krausz, Lanza, Phillips, Root and Young are the managing members of PMG V, and may be deemed to have shared power to vote and shared power to dispose of the shares of issuer directly owned by USVP V, V Int'l, EP V and 2180 V. ITEM 2(b). ADDRESS OF PRINCIPAL BUSINESS OFFICE, OR, IF NONE, RESIDENCE: The address of the principal business office for each of the Reporting Persons is: U.S. Venture Partners 2180 Sand Hill Road, Suite 300 Menlo Park, CA 94025 ITEM 2(c) CITIZENSHIP: USVP V, EP V, and 2180 V are Delaware Limited Partnerships, V Int'l is a Cayman Islands Limited Partnership, PMG V is a Delaware Limited Liability Company, and Federman, Friend, Green, Krausz, Lanza, Phillips, Root and Young are United States citizens. ITEM 2(d). TITLE OF CLASS OF SECURITIES: Common Stock Page 16 of 23 Pages ITEM 2(e). CUSIP NUMBER: CUSIP # : 126946102 ITEM 3. Not Applicable ITEM 4. OWNERSHIP: The following information with respect to the ownership of the Common Stock of the issuer by the persons filing this Statement is provided as of December 31, December 31, 1999: (a) Amount beneficially owned: See Row 9 of cover page for each Reporting Person. (b) Percent of Class: See Row 11 of cover page for each Reporting Person. (c) Number of shares as to which such person has: (i) Sole power to vote or to direct the vote: See Row 5 of cover page for each Reporting Person. (ii) Shared power to vote or to direct the vote: See Row 6 of cover page for each Reporting Person. (iii) Sole power to dispose or to direct the disposition of: See Row 7 of cover page for each Reporting Person. (iv) Shared power to dispose or to direct the disposition of: See Row 8 of cover page for each Reporting Person. Page 17 of 23 ITEM 5. OWNERSHIP OF FIVE PERCENT OR LESS OF A CLASS: Not applicable ITEM 6. OWNERSHIP OF MORE THAN FIVE PERCENT ON BEHALF OF ANOTHER PERSON: Under certain circumstances set forth in the limited partnership and limited liability company agreements of USVP V, V Int'l, EP V, 2180 V and PMG V, the general partners, limited partners and managing members of each of such entities, as applicable, may be deemed to have the right to receive dividends from, or the proceeds from, the sale of shares of the issuer owned by each such entity of which they are a partner or managing member. ITEM 7. IDENTIFICATION AND CLASSIFICATION OF THE SUBSIDIARY WHICH ACQUIRED THE SECURITY BEING REPORTED ON BY THE PARENT HOLDING COMPANY: Not applicable. ITEM 8. IDENTIFICATION AND CLASSIFICATION OF MEMBERS OF THE GROUP: Not applicable ITEM 9. NOTICE OF DISSOLUTION OF GROUP: Not applicable ITEM 10. CERTIFICATION: Not applicable Page 18 of 23 Pages SIGNATURES After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct. Dated: January 31, 2000 U.S. Venture Partners V, L.P. By Presidio Management Group V, L.L.C. ---------------------------------------- Its General Partner Signature Michael Maher Chief Financial Officer/Attorney-In-Fact USVP V International, L.P. By Presidio Management Group V, L.L.C. ---------------------------------------- Its General Partner Signature Michael Maher Chief Financial Officer/Attorney-In-Fact USVP V Entrepreneur Partners, L.P. By Presidio Management Group V, L.L.C. ---------------------------------------- Its General Partner Signature Michael Maher Chief Financial Officer/Attorney-In-Fact 2180 Associates Fund V, L.P. By Presidio Management Group V, L.L.C. ---------------------------------------- Its General Partner Signature Michael Maher Chief Financial Officer/Attorney-In-Fact By Presidio Management Group V, L.L.C. A Delaware Limited Liability Company ---------------------------------------- Signature Michael Maher Chief Financial Officer/Attorney-In-Fact Irwin Federman ---------------------------------------- Michael Maher Attorney-In-Fact Page 19 of 23 Marc A. Friend ---------------------------------------- Michael Maher Attorney-In-Fact Jason E. Green ---------------------------------------- Michael Maher Attorney-In-Fact Steven M. Krausz ---------------------------------------- Michael Maher Attorney-In-Fact Lucio Lanza ---------------------------------------- Michael Maher Attorney-In-Fact Stuart G. Phillips ---------------------------------------- Michael Maher Attorney-In-Fact Jonathan D. Root ---------------------------------------- Michael Maher Attorney-In-Fact Philip M. Young ---------------------------------------- Michael Maher Attorney-In-Fact Page 20 of 23 Pages EXHIBIT INDEX Found on Sequentially Exhibit Numbered Pages - ------- -------------- Exhibit A: Agreement of Joint Filing 21 Exhibit B: Reference to Michael P. Maher as Attorney-In-Fact 23 Page 21 of 23 Pages EXHIBIT A Agreement of Joint Filing The undersigned hereby agree that a single Schedule 13G (or any amendment thereto) relating to the Common Stock of CacheFlow, Inc. shall be filed on behalf of each of the undersigned and that this Agreement shall be filed as an exhibit to such Schedule 13G. Dated: January 31, 2000 U.S. Venture Partners V, L.P. By Presidio Management Group V, L.L.C. ---------------------------------------- Its General Partner Signature Michael Maher Chief Financial Officer/Attorney-In-Fact USVP V International, L.P. By Presidio Management Group V, L.L.C. ---------------------------------------- Its General Partner Signature Michael Maher Chief Financial Officer/Attorney-In-Fact USVP V Entrepreneur Partners , L.P. By Presidio Management Group V, L.L.C. ---------------------------------------- Its General Partner Signature Michael Maher Chief Financial Officer/Attorney-In-Fact 2180 Associates Fund V, L.P. By Presidio Management Group V, L.L.C. ---------------------------------------- Its General Partner Signature Michael Maher Chief Financial Officer/Attorney-In-Fact By Presidio Management Group V, L.L.C. A Delaware Limited Liability Company ---------------------------------------- Signature Michael Maher Chief Financial Officer/Attorney-In-Fact Page 22 of 23 Pages Irwin Federman ---------------------------------------- Michael Maher Attorney-In-Fact Marc A. Friend ---------------------------------------- Michael Maher Attorney-In-Fact Jason E. Green ---------------------------------------- Michael Maher Attorney-In-Fact Steven M. Krausz ---------------------------------------- Michael Maher Attorney-In-Fact Lucio Lanza ---------------------------------------- Michael Maher Attorney-In-Fact Stuart G. Phillips ---------------------------------------- Michael Maher Attorney-In-Fact Jonathan D. Root ---------------------------------------- Michael Maher Attorney-In-Fact Philip M. Young ---------------------------------------- Michael Maher Attorney-In-Fact Page 23 of 23 Pages EXHIBIT B REFERENCE TO MICHAEL MAHER AS ATTORNEY-IN-FACT Michael P. Maher has signed the enclosed documents as Attorney-In-Fact. Note that copies of the applicable Power of Attorneys are already on file with the appropriate agencies. -----END PRIVACY-ENHANCED MESSAGE-----