SC 13G/A 1 p16608_sc13ga.txt AMENDMENT TO SCHEDULE 13G -------------------------- OMB APPROVAL -------------------------- OMB Number: 3235-0145 Expires: December 31, 2005 Estimated average burden hours per response......11 -------------------------- UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 ------------ SCHEDULE 13G/A 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. 2) Hybrid Networks, Inc. -------------------------------------------------------------------------------- (Name of Issuer) Common Stock -------------------------------------------------------------------------------- (Title of Class of Securities) 44860K 10 2 -------------------------------------------------------------------------------- (CUSIP Number) December 31, 2002 -------------------------------------------------------------------------------- (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) Page 1 of 24 pages CUSIP No. 44860K 10 2 Page 2 of 24 Pages -------------------------------------------------------------------------------- 1 NAMES OF REPORTING PERSONS I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY) Accel IV L.P. ("A4") -------------------------------------------------------------------------------- 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 759,345 shares, except that Accel IV Associates L.P. ("A4A"), the general partner of A4, may be deemed to NUMBER OF have sole power to vote these shares and James W. Breyer SHARES ("Breyer"), Luke B. Evnin ("Evnin"), Eugene D. Hill, III BENEFICIALLY ("Hill"), Paul H. Klingenstein ("Klingenstein"), Arthur OWNED BY C. Patterson ("Patterson"), G. Carter Sednaoui EACH ("Sednaoui"), James R. Swartz ("Swartz") and Homestake REPORTING Partners L.P. ("HP"), the general partners of A4A, may PERSON be deemed to have shared power to vote these shares. WITH -------------------------------------------------------- 6 SHARED VOTING POWER See response to row 5. -------------------------------------------------------- 7 SOLE DISPOSITIVE POWER 759,345 shares, except that A4A, the general partner of A4, may be deemed to have sole power to dispose of these shares and Breyer, Evnin, Hill, Klingenstein, Patterson, Sednaoui, Swartz, and HP, the general partners of A4A, may be deemed to have shared power to dispose of these shares. -------------------------------------------------------- 8 SHARED DISPOSITIVE POWER See response to row 7. -------------------------------------------------------------------------------- 9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 759,345 shares. -------------------------------------------------------------------------------- 10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES* |_| -------------------------------------------------------------------------------- 11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9) 3.3% -------------------------------------------------------------------------------- 12 TYPE OF REPORTING PERSON* PN -------------------------------------------------------------------------------- *SEE INSTRUCTION BEFORE FILLING OUT! CUSIP No. 44860K 10 2 Page 3 of 24 Pages -------------------------------------------------------------------------------- 1 NAMES OF REPORTING PERSONS I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY) Accel Keiretsu L.P. ("AK") -------------------------------------------------------------------------------- 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 15,750 shares, except that Accel Partners & Co. Inc. NUMBER OF ("AP&C"), the general partner of AK, may be deemed to SHARES have sole power to vote these shares and Breyer, BENEFICIALLY Patterson, Sednaoui and Swartz, the officers of AP&C, OWNED BY may be deemed to have shared power to vote these shares. EACH -------------------------------------------------------- REPORTING 6 SHARED VOTING POWER PERSON WITH See response to row 5. -------------------------------------------------------- 7 SOLE DISPOSITIVE POWER 15,750 shares, except that AP&C, the general partner of AK, may be deemed to have sole power to dispose of these shares and Breyer, Patterson, Sednaoui and Swartz, the officers of AP&C, may be deemed to have shared power to dispose of these shares. -------------------------------------------------------- 8 SHARED DISPOSITIVE POWER See response to row 7. -------------------------------------------------------------------------------- 9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 15,750 shares. -------------------------------------------------------------------------------- 10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES* |_| -------------------------------------------------------------------------------- 11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9) 0.1% -------------------------------------------------------------------------------- 12 TYPE OF REPORTING PERSON* PN -------------------------------------------------------------------------------- *SEE INSTRUCTION BEFORE FILLING OUT! CUSIP No. 44860K 10 2 Page 4 of 24 Pages -------------------------------------------------------------------------------- 1 NAMES OF REPORTING PERSONS I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY) Accel Partners & Co. Inc. ("AP&C") -------------------------------------------------------------------------------- 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 15,750 shares, all of which are directly owned by AK. NUMBER OF AP&C, the general partner of AK, may be deemed to have SHARES sole power to vote these shares, and Breyer, Patterson, BENEFICIALLY Sednaoui and Swartz, the officers of AP&C, may be deemed OWNED BY to have shared power to vote these shares. EACH -------------------------------------------------------- REPORTING 6 SHARED VOTING POWER PERSON WITH See response to row 5. -------------------------------------------------------- 7 SOLE DISPOSITIVE POWER 15,750 shares, all of which are directly owned by AK. AP&C, the general partner of AK, may be deemed to have sole power to dispose of these shares, and Breyer, Patterson, Sednaoui and Swartz, the officers of AP&C, may be deemed to have shared power to dispose of these shares. -------------------------------------------------------- 8 SHARED DISPOSITIVE POWER See response to row 7. -------------------------------------------------------------------------------- 9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 15,750 shares. -------------------------------------------------------------------------------- 10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES* |_| -------------------------------------------------------------------------------- 11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9) 0.1% -------------------------------------------------------------------------------- 12 TYPE OF REPORTING PERSON* CO -------------------------------------------------------------------------------- *SEE INSTRUCTION BEFORE FILLING OUT! CUSIP No. 44860K 10 2 Page 5 of 24 Pages -------------------------------------------------------------------------------- 1 NAMES OF REPORTING PERSONS I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY) Accel Investors '95 L.P. ("AI95") -------------------------------------------------------------------------------- 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 35,575 shares, except that Breyer, Evnin, Hill, NUMBER OF Klingenstein, Patterson, Sednaoui and Swartz, the SHARES general partners of AI95, may be deemed to have shared BENEFICIALLY power to vote these shares. OWNED BY -------------------------------------------------------- EACH 6 SHARED VOTING POWER REPORTING PERSON See response to row 5. WITH -------------------------------------------------------- 7 SOLE DISPOSITIVE POWER 35,575 shares, except that Breyer, Evnin, Hill, Klingenstein, Patterson, Sednaoui and Swartz, the general partners of AI95, may be deemed to have shared power to dispose of these shares. -------------------------------------------------------- 8 SHARED DISPOSITIVE POWER See response to row 7. -------------------------------------------------------------------------------- 9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 35,575 shares. -------------------------------------------------------------------------------- 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 INSTRUCTION BEFORE FILLING OUT! CUSIP No. 44860K 10 2 Page 6 of 24 Pages -------------------------------------------------------------------------------- 1 NAMES OF REPORTING PERSONS I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY) Accel IV Associates L.P. ("A4A") -------------------------------------------------------------------------------- 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 759,345 shares, all of which are directly owned by A4. A4A, the general partner of A4, may be deemed to have sole power to vote these shares, and HP, Breyer, Evnin, NUMBER OF Hill, Klingenstein, Patterson, Sednaoui and Swartz, the SHARES general partners of A4A, may be deemed to have shared BENEFICIALLY power to vote these shares. OWNED BY -------------------------------------------------------- EACH 6 SHARED VOTING POWER REPORTING PERSON See response to row 5. WITH -------------------------------------------------------- 7 SOLE DISPOSITIVE POWER 759,345 shares, all of which are directly owned by A4. A4A, the general partner of A4, may be deemed to have sole power to dispose of these shares and HP, Breyer, Evnin, Hill, Klingenstein, Patterson, Sednaoui and Swartz, the general partners of A4A, may be deemed to have shared power to dispose of these shares. -------------------------------------------------------- 8 SHARED DISPOSITIVE POWER See response to row 7. -------------------------------------------------------------------------------- 9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 759,345 shares. -------------------------------------------------------------------------------- 10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES* |_| -------------------------------------------------------------------------------- 11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9) 3.3% -------------------------------------------------------------------------------- 12 TYPE OF REPORTING PERSON* PN -------------------------------------------------------------------------------- *SEE INSTRUCTION BEFORE FILLING OUT! CUSIP No. 44860K 10 2 Page 7 of 24 Pages -------------------------------------------------------------------------------- 1 NAMES OF REPORTING PERSONS I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY) Homestake Partners L.P. ("HP") -------------------------------------------------------------------------------- 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 0 shares. -------------------------------------------------------- NUMBER OF 6 SHARED VOTING POWER SHARES BENEFICIALLY 759,345 shares, all of which are directly owned by A4. OWNED BY HP is a general partner of A4A, the general partner of EACH A4, and may be deemed to have shared power to vote these REPORTING shares. PERSON -------------------------------------------------------- WITH 7 SOLE DISPOSITIVE POWER 0 shares. -------------------------------------------------------- 8 SHARED DISPOSITIVE POWER 759,345 shares, all of which are directly owned by A4. HP is a general partner of A4A, the general partner of A4, and may be deemed to have shared power to dispose of these shares. -------------------------------------------------------------------------------- 9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 759,345 shares. -------------------------------------------------------------------------------- 10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES* |_| -------------------------------------------------------------------------------- 11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9) 3.3% -------------------------------------------------------------------------------- 12 TYPE OF REPORTING PERSON* PN -------------------------------------------------------------------------------- *SEE INSTRUCTION BEFORE FILLING OUT! CUSIP No. 44860K 10 2 Page 8 of 24 Pages -------------------------------------------------------------------------------- 1 NAMES OF REPORTING PERSONS I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY) Ellmore C. Patterson Partners ("ECPP") -------------------------------------------------------------------------------- 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 NUMBER OF 24,260 shares. Patterson is the general partner of ECPP SHARES and may be deemed to have sole power to vote these BENEFICIALLY shares. OWNED BY -------------------------------------------------------- EACH 6 SHARED VOTING POWER REPORTING PERSON 0 shares. WITH -------------------------------------------------------- 7 SOLE DISPOSITIVE POWER 24,260 shares. Patterson is the general partner of ECPP and may be deemed to have sole power to dispose of these shares. -------------------------------------------------------- 8 SHARED DISPOSITIVE POWER 0 shares. -------------------------------------------------------------------------------- 9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 24,260 shares. -------------------------------------------------------------------------------- 10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES* |_| -------------------------------------------------------------------------------- 11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9) 0.1% -------------------------------------------------------------------------------- 12 TYPE OF REPORTING PERSON* PN -------------------------------------------------------------------------------- *SEE INSTRUCTION BEFORE FILLING OUT! CUSIP No. 44860K 10 2 Page 9 of 24 Pages -------------------------------------------------------------------------------- 1 NAMES OF REPORTING PERSONS I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY) Accel VII L.P. ("A7") -------------------------------------------------------------------------------- 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 1,239,506 shares, except that Accel VII Associates L.L.C. ("A7A"), the general partner of A7, may be deemed to have sole power to vote these shares and Alan K. Austin ("Austin"), Breyer, Patterson, Sednaoui, Swartz NUMBER OF and J. Peter Wagner ("Wagner"), the managing members of SHARES A7A, may be deemed to have shared power to vote these BENEFICIALLY shares. OWNED BY -------------------------------------------------------- EACH 6 SHARED VOTING POWER REPORTING PERSON See response to row 5. WITH -------------------------------------------------------- 7 SOLE DISPOSITIVE POWER 1,239,506 shares, except that A7A, the general partner of A7, may be deemed to have sole power to dispose of these shares and Austin, Breyer, Patterson, Sednaoui, Swartz and Wagner, the managing members of A7A, may be deemed to have shared power to dispose of these shares. -------------------------------------------------------- 8 SHARED DISPOSITIVE POWER See response to row 7. -------------------------------------------------------------------------------- 9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 1,239,506 shares. -------------------------------------------------------------------------------- 10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES* |_| -------------------------------------------------------------------------------- 11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9) 5.4% -------------------------------------------------------------------------------- 12 TYPE OF REPORTING PERSON* PN -------------------------------------------------------------------------------- *SEE INSTRUCTION BEFORE FILLING OUT! CUSIP No. 44860K 10 2 Page 10 of 24 Pages -------------------------------------------------------------------------------- 1 NAMES OF REPORTING PERSONS I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY) Accel VII Associates L.L.C. ("A7A") -------------------------------------------------------------------------------- 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 1,239,506 shares, all of which are directly owned by A7. A7A, the general partner of A7, may be deemed to have sole power to vote these shares and Austin, Breyer, NUMBER OF Patterson, Sednaoui, Swartz and Wagner, the managing SHARES members of A7A, may be deemed to have shared power to BENEFICIALLY vote these shares. OWNED BY -------------------------------------------------------- EACH 6 SHARED VOTING POWER REPORTING PERSON See response to row 5. WITH -------------------------------------------------------- 7 SOLE DISPOSITIVE POWER 1,239,506 shares, all of which are directly owned by A7. A7A, the general partner of A7, may be deemed to have sole power to dispose of these shares and Austin, Breyer, Patterson, Sednaoui, Swartz and Wagner, the managing members of A7A, may be deemed to have shared power to dispose of these shares. -------------------------------------------------------- 8 SHARED DISPOSITIVE POWER See response to row 7. -------------------------------------------------------------------------------- 9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 1,239,506 shares. -------------------------------------------------------------------------------- 10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES* |_| -------------------------------------------------------------------------------- 11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9) 5.4% -------------------------------------------------------------------------------- 12 TYPE OF REPORTING PERSON* OO -------------------------------------------------------------------------------- *SEE INSTRUCTION BEFORE FILLING OUT! CUSIP No. 44860K 10 2 Page 11 of 24 Pages -------------------------------------------------------------------------------- 1 NAMES OF REPORTING PERSONS I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY) Accel Internet Fund III L.P. ("AIF3") -------------------------------------------------------------------------------- 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 309,877 shares, except that Accel Internet Fund III Associates L.L.C. ("AIF3A"), the general partner of AIF3, may be deemed to have sole power to vote these NUMBER OF shares and Austin, Breyer, Patterson, Sednaoui, Swartz SHARES and Wagner, the managing members of AIF3A, may be deemed BENEFICIALLY to have shared power to vote these shares. OWNED BY -------------------------------------------------------- EACH 6 SHARED VOTING POWER REPORTING PERSON See response to row 5. WITH -------------------------------------------------------- 7 SOLE DISPOSITIVE POWER 309,877 shares, except that AIF3A, the general partner of AIF3, may be deemed to have sole power to dispose of these shares and Austin, Breyer, Patterson, Sednaoui, Swartz and Wagner, the managing members of AIF3A, may be deemed to have shared power to dispose of these shares. -------------------------------------------------------- 8 SHARED DISPOSITIVE POWER See response to row 7. -------------------------------------------------------------------------------- 9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 309,877 shares. -------------------------------------------------------------------------------- 10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES* |_| -------------------------------------------------------------------------------- 11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9) 1.4% -------------------------------------------------------------------------------- 12 TYPE OF REPORTING PERSON* PN -------------------------------------------------------------------------------- *SEE INSTRUCTION BEFORE FILLING OUT! CUSIP No. 44860K 10 2 Page 12 of 24 Pages -------------------------------------------------------------------------------- 1 NAMES OF REPORTING PERSONS I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY) Accel Internet Fund III Associates L.L.C. ("AIF3A") -------------------------------------------------------------------------------- 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 309,877 shares, all of which are directly owned by AIF3. AIF3A, the general partner of AIF3, may be deemed to have sole power to vote these shares and Austin, Breyer, NUMBER OF Patterson, Sednaoui, Swartz and Wagner, the managing SHARES members of AIF3A, may be deemed to have shared power to BENEFICIALLY vote these shares. OWNED BY -------------------------------------------------------- EACH 6 SHARED VOTING POWER REPORTING PERSON See response to row 5. WITH -------------------------------------------------------- 7 SOLE DISPOSITIVE POWER 309,877 shares, all of which are directly owned by AIF3. AIF3A, the general partner of AIF3, may be deemed to have sole power to dispose of these shares and Austin, Breyer, Patterson, Sednaoui, Swartz and Wagner, the managing members of AIF3A, may be deemed to have shared power to dispose of these shares. -------------------------------------------------------- 8 SHARED DISPOSITIVE POWER See response to row 7. -------------------------------------------------------------------------------- 9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 309,877 shares. -------------------------------------------------------------------------------- 10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES* |_| -------------------------------------------------------------------------------- 11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9) 1.4% -------------------------------------------------------------------------------- 12 TYPE OF REPORTING PERSON* OO -------------------------------------------------------------------------------- *SEE INSTRUCTION BEFORE FILLING OUT! CUSIP No. 44860K 10 2 Page 13 of 24 Pages -------------------------------------------------------------------------------- 1 NAMES OF REPORTING PERSONS I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY) Accel Investors '99 L.P. ("AI99") -------------------------------------------------------------------------------- 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 NUMBER OF 155,001 shares, except that Breyer, Patterson, Sednaoui, SHARES Swartz and Wagner, the general partners of AI99, may be BENEFICIALLY deemed to have shared power to vote these shares. OWNED BY -------------------------------------------------------- EACH 6 SHARED VOTING POWER REPORTING PERSON See response to row 5. WITH -------------------------------------------------------- 7 SOLE DISPOSITIVE POWER 155,001 shares, except that Breyer, Patterson, Sednaoui, Swartz and Wagner, the general partners of AI99, may be deemed to have shared power to dispose of these shares. -------------------------------------------------------- 8 SHARED DISPOSITIVE POWER See response to row 7. -------------------------------------------------------------------------------- 9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 155,001 shares. -------------------------------------------------------------------------------- 10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES* |_| -------------------------------------------------------------------------------- 11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9) 0.7% -------------------------------------------------------------------------------- 12 TYPE OF REPORTING PERSON* PN -------------------------------------------------------------------------------- *SEE INSTRUCTION BEFORE FILLING OUT! CUSIP No. 44860K 10 2 Page 14 of 24 Pages -------------------------------------------------------------------------------- 1 NAMES OF REPORTING PERSONS I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY) Alan K. Austin ("Austin") -------------------------------------------------------------------------------- 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 6 SHARED VOTING POWER SHARES BENEFICIALLY 1,549,383 shares, of which 1,239,506 are shares directly OWNED BY owned by A7 and 309,877 are shares directly owned by EACH AIF3. Austin is a managing member of A7A, the general REPORTING partner of A7, and a managing member of AIF3A, the PERSON general partner of AIF3 and may be deemed to have shared WITH power to vote these shares. -------------------------------------------------------- 7 SOLE DISPOSITIVE POWER 0 shares. -------------------------------------------------------- 8 SHARED DISPOSITIVE POWER 1,549,383 shares, of which 1,239,506 are shares directly owned by A7 and 309,877 are shares directly owned by AIF3. Austin is a managing member of A7A, the general partner of A7, and a managing member of AIF3A, the general partner of AIF3 and may be deemed to have shared power to dispose of these shares. -------------------------------------------------------------------------------- 9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 1,549,383 shares. -------------------------------------------------------------------------------- 10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES* |_| -------------------------------------------------------------------------------- 11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9) 6.8% -------------------------------------------------------------------------------- 12 TYPE OF REPORTING PERSON* IN -------------------------------------------------------------------------------- *SEE INSTRUCTION BEFORE FILLING OUT! CUSIP No. 44860K 10 2 Page 15 of 24 Pages -------------------------------------------------------------------------------- 1 NAMES OF REPORTING PERSONS I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY) James W. Breyer ("Breyer") -------------------------------------------------------------------------------- 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 6 SHARED VOTING POWER SHARES BENEFICIALLY 2,515,054 shares, of which 759,345 are shares directly OWNED BY owned by A4, 15,750 are shares directly owned by AK, EACH 35,575 are shares directly owned by AI95, 1,239,506 are REPORTING shares directly owned by A7, 309,877 are shares directly PERSON owned by AIF3 and 155,001 are shares directly owned by WITH AI99. Breyer is a general partner of A4A, the general partner of A4, an officer of AP&C, the general partner of AK, a general partner of AI95, a managing member of A7A, the general partner of A7, a managing member of AIF3A, the general partner of AIF3, and a general partner of AI99 and may be deemed to have shared power to vote these shares. -------------------------------------------------------- 7 SOLE DISPOSITIVE POWER 0 shares. -------------------------------------------------------- 8 SHARED DISPOSITIVE POWER 2,515,054 shares, of which 759,345 are shares directly owned by A4, 15,750 are shares directly owned by AK, 35,575 are shares directly owned by AI95, 1,239,506 are shares directly owned by A7, 309,877 are shares directly owned by AIF3 and 155,001 are shares directly owned by AI99. Breyer is a general partner of A4A, the general partner of A4, an officer of AP&C, the general partner of AK, a general partner of AI95, a managing member of A7A, the general partner of A7, a managing member of AIF3A, the general partner of AIF3, and a general partner of AI99 and may be deemed to have shared power to dispose of these shares. -------------------------------------------------------------------------------- 9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 2,515,054 shares. -------------------------------------------------------------------------------- 10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES* |_| -------------------------------------------------------------------------------- 11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9) 11% -------------------------------------------------------------------------------- 12 TYPE OF REPORTING PERSON* IN -------------------------------------------------------------------------------- *SEE INSTRUCTION BEFORE FILLING OUT! CUSIP No. 44860K 10 2 Page 16 of 24 Pages -------------------------------------------------------------------------------- 1 NAMES OF REPORTING PERSONS I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY) Luke B. Evnin ("Evnin") -------------------------------------------------------------------------------- 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 6 SHARED VOTING POWER SHARES BENEFICIALLY 794,920 shares, of which 759,345 are shares directly OWNED BY owned by A4 and 35,575 are shares directly owned by EACH AI95. Evnin is a general partner of A4A, the general REPORTING partner of A4, and a general partner of AI95 and may be PERSON deemed to have shared power to vote these shares. WITH -------------------------------------------------------- 7 SOLE DISPOSITIVE POWER 0 shares. -------------------------------------------------------- 8 SHARED DISPOSITIVE POWER 794,920 shares, of which 759,345 are shares directly owned by A4 and 35,575 are shares directly owned by AI95. Evnin is a general partner of A4A, the general partner of A4, and a general partner of AI95 and may be deemed to have shared power to dispose of these shares. -------------------------------------------------------------------------------- 9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 794,920 shares. -------------------------------------------------------------------------------- 10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES* |_| -------------------------------------------------------------------------------- 11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9) 3.5% -------------------------------------------------------------------------------- 12 TYPE OF REPORTING PERSON* IN -------------------------------------------------------------------------------- *SEE INSTRUCTION BEFORE FILLING OUT! CUSIP No. 44860K 10 2 Page 17 of 24 Pages -------------------------------------------------------------------------------- 1 NAMES OF REPORTING PERSONS I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY) Eugene D. Hill, III ("Hill") -------------------------------------------------------------------------------- 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 6 SHARED VOTING POWER SHARES BENEFICIALLY 794,920 shares, of which 759,345 are shares directly OWNED BY owned by A4 and 35,575 are shares directly owned by EACH AI95. Hill is a general partner of A4A, the general REPORTING partner of A4, and a general partner of AI95 and may be PERSON deemed to have shared power to vote these shares. WITH -------------------------------------------------------- 7 SOLE DISPOSITIVE POWER 0 shares. -------------------------------------------------------- 8 SHARED DISPOSITIVE POWER 794,920 shares, of which 759,345 are shares directly owned by A4 and 35,575 are shares directly owned by AI95. Hill is a general partner of A4A, the general partner of A4, and a general partner of AI95 and may be deemed to have shared power to dispose of these shares. -------------------------------------------------------------------------------- 9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 794,920 shares. -------------------------------------------------------------------------------- 10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES* |_| -------------------------------------------------------------------------------- 11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9) 3.5% -------------------------------------------------------------------------------- 12 TYPE OF REPORTING PERSON* IN -------------------------------------------------------------------------------- *SEE INSTRUCTION BEFORE FILLING OUT! CUSIP No. 44860K 10 2 Page 18 of 24 Pages -------------------------------------------------------------------------------- 1 NAMES OF REPORTING PERSONS I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY) Paul H. Klingenstein ("Klingenstein") -------------------------------------------------------------------------------- 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 6 SHARED VOTING POWER SHARES BENEFICIALLY 794,920 shares, of which 759,345 are shares directly OWNED BY owned by A4 and 35,575 are shares directly owned by EACH AI95. Klingenstein is a general partner of A4A, the REPORTING general partner of A4, and a general partner of AI95 and PERSON may be deemed to have shared power to vote these shares. WITH -------------------------------------------------------- 7 SOLE DISPOSITIVE POWER 0 shares. -------------------------------------------------------- 8 SHARED DISPOSITIVE POWER 794,920 shares, of which 759,345 are shares directly owned by A4 and 35,575 are shares directly owned by AI95. Klingenstein is a general partner of A4A, the general partner of A4, and a general partner of AI95 and may be deemed to have shared power to dispose of these shares. -------------------------------------------------------------------------------- 9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 794,920 shares. -------------------------------------------------------------------------------- 10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES* |_| -------------------------------------------------------------------------------- 11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9) 3.5% -------------------------------------------------------------------------------- 12 TYPE OF REPORTING PERSON* IN -------------------------------------------------------------------------------- *SEE INSTRUCTION BEFORE FILLING OUT! CUSIP No. 44860K 10 2 Page 19 of 24 Pages -------------------------------------------------------------------------------- 1 NAMES OF REPORTING PERSONS I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY) Arthur C. Patterson ("Patterson") -------------------------------------------------------------------------------- 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 24,260 shares, all of which are directly owned by ECPP. Patterson is the general partner of ECPP and may be deemed to have sole power to vote these shares. -------------------------------------------------------- NUMBER OF 6 SHARED VOTING POWER SHARES BENEFICIALLY 2,515,054 shares, of which 759,345 are shares directly OWNED BY owned by A4, 15,750 are shares directly owned by AK, EACH 35,575 are shares directly owned by AI95, 1,239,506 are REPORTING shares directly owned by A7, 309,877 are shares directly PERSON owned by AIF3 and 155,001 are shares directly owned by WITH AI99. Patterson is a general partner of A4A, the general partner of A4, an officer of AP&C, the general partner of AK, a general partner of AI95, a managing member of A7A, the general partner of A7, a managing member of AIF3A, the general partner of AIF3, and a general partner of AI99 and may be deemed to have shared power to vote these shares. -------------------------------------------------------- 7 SOLE DISPOSITIVE POWER 24,260 shares, all of which are directly owned by ECPP. Patterson is the general partner of ECPP and may be deemed to have sole power to dispose of these shares. -------------------------------------------------------- 8 SHARED DISPOSITIVE POWER 2,515,054 shares, of which 759,345 are shares directly owned by A4, 15,750 are shares directly owned by AK, 35,575 are shares directly owned by AI95, 1,239,506 are shares directly owned by A7, 309,877 are shares directly owned by AIF3 and 155,001 are shares directly owned by AI99. Patterson is a general partner of A4A, the general partner of A4, an officer of AP&C, the general partner of AK, a general partner of AI95, a managing member of A7A, the general partner of A7, a managing member of AIF3A, the general partner of AIF3, and a general partner of AI99 and may be deemed to have shared power to dispose of these shares. -------------------------------------------------------------------------------- 9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 2,539,314 shares. -------------------------------------------------------------------------------- 10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES* |_| -------------------------------------------------------------------------------- 11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9) 11.1% -------------------------------------------------------------------------------- 12 TYPE OF REPORTING PERSON* IN -------------------------------------------------------------------------------- *SEE INSTRUCTION BEFORE FILLING OUT! CUSIP No. 44860K 10 2 Page 20 of 24 Pages -------------------------------------------------------------------------------- 1 NAMES OF REPORTING PERSONS I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY) G. Carter Sednaoui ("Sednaoui") -------------------------------------------------------------------------------- 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 6 SHARED VOTING POWER SHARES BENEFICIALLY 2,515,054 shares, of which 759,345 are shares directly OWNED BY owned by A4, 15,750 are shares directly owned by AK, EACH 35,575 are shares directly owned by AI95, 1,239,506 are REPORTING shares directly owned by A7, 309,877 are shares directly PERSON owned by AIF3 and 155,001 are shares directly owned by WITH AI99. Sednaoui is a general partner of A4A, the general partner of A4, an officer of AP&C, the general partner of AK, a general partner of AI95, a managing member of A7A, the general partner of A7, a managing member of AIF3A, the general partner of AIF3, and a general partner of AI99 and may be deemed to have shared power to vote these shares. -------------------------------------------------------- 7 SOLE DISPOSITIVE POWER 0 shares. -------------------------------------------------------- 8 SHARED DISPOSITIVE POWER 2,515,054 shares, of which 759,345 are shares directly owned by A4, 15,750 are shares directly owned by AK, 35,575 are shares directly owned by AI95, 1,239,506 are shares directly owned by A7, 309,877 are shares directly owned by AIF3 and 155,001 are shares directly owned by AI99. Sednaoui is a general partner of A4A, the general partner of A4, an officer of AP&C, the general partner of AK, a general partner of AI95, a managing member of A7A, the general partner of A7, a managing member of AIF3A, the general partner of AIF3, and a general partner of AI99 and may be deemed to have shared power to dispose of these shares. -------------------------------------------------------------------------------- 9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 2,515,054 shares. -------------------------------------------------------------------------------- 10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES* |_| -------------------------------------------------------------------------------- 11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9) 11% -------------------------------------------------------------------------------- 12 TYPE OF REPORTING PERSON* IN -------------------------------------------------------------------------------- *SEE INSTRUCTION BEFORE FILLING OUT! CUSIP No. 44860K 10 2 Page 21 of 24 Pages -------------------------------------------------------------------------------- 1 NAMES OF REPORTING PERSONS I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY) James R. Swartz ("Swartz") -------------------------------------------------------------------------------- 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 6 SHARED VOTING POWER SHARES BENEFICIALLY 2,515,054 shares, of which 759,345 are shares directly OWNED BY owned by A4, 15,750 are shares directly owned by AK, EACH 35,575 are shares directly owned by AI95, 1,239,506 are REPORTING shares directly owned by A7, 309,877 are shares directly PERSON owned by AIF3 and 155,001 are shares directly owned by WITH AI99. Swartz is a general partner of A4A, the general partner of A4, an officer of AP&C, the general partner of AK, a general partner of AI95, a managing member of A7A, the general partner of A7, a managing member of AIF3A, the general partner of AIF3, and a general partner of AI99 and may be deemed to have shared power to vote these shares. -------------------------------------------------------- 7 SOLE DISPOSITIVE POWER 0 shares. -------------------------------------------------------- 8 SHARED DISPOSITIVE POWER 2,515,054 shares, of which 759,345 are shares directly owned by A4, 15,750 are shares directly owned by AK, 35,575 are shares directly owned by AI95, 1,239,506 are shares directly owned by A7, 309,877 are shares directly owned by AIF3 and 155,001 are shares directly owned by AI99. Swartz is a general partner of A4A, the general partner of A4, an officer of AP&C, the general partner of AK, a general partner of AI95, a managing member of A7A, the general partner of A7, a managing member of AIF3A, the general partner of AIF3, and a general partner of AI99 and may be deemed to have shared power to dispose of these shares. -------------------------------------------------------------------------------- 9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 2,515,054 shares. -------------------------------------------------------------------------------- 10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES* |_| -------------------------------------------------------------------------------- 11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9) 11% -------------------------------------------------------------------------------- 12 TYPE OF REPORTING PERSON* IN -------------------------------------------------------------------------------- *SEE INSTRUCTION BEFORE FILLING OUT! CUSIP No. 44860K 10 2 Page 22 of 24 Pages -------------------------------------------------------------------------------- 1 NAMES OF REPORTING PERSONS I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY) J. Peter Wagner ("Wagner") -------------------------------------------------------------------------------- 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 6 SHARED VOTING POWER SHARES BENEFICIALLY 1,704,384 shares, of which 1,239,506 are shares directly OWNED BY owned by A7, 309,877 are shares directly owned by AIF3 EACH and 155,001 are shares directly owned by AI99. Wagner is REPORTING a managing member of A7A, the general partner of A7, a PERSON managing member of AIF3A, the general partner of AIF3, WITH and a general partner of AI99 and may be deemed to have shared power to vote these shares. -------------------------------------------------------- 7 SOLE DISPOSITIVE POWER 0 shares. -------------------------------------------------------- 8 SHARED DISPOSITIVE POWER 1,704,384 shares, of which 1,239,506 are shares directly owned by A7, 309,877 are shares directly owned by AIF3 and 155,001 are shares directly owned by AI99. Wagner is a managing member of A7A, the general partner of A7, a managing member of AIF3A, the general partner of AIF3, and a general partner of AI99 and may be deemed to have shared power to dispose of these shares. -------------------------------------------------------------------------------- 9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 1,704,384 shares. -------------------------------------------------------------------------------- 10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES* |_| -------------------------------------------------------------------------------- 11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9) 7.5% -------------------------------------------------------------------------------- 12 TYPE OF REPORTING PERSON* IN -------------------------------------------------------------------------------- *SEE INSTRUCTION BEFORE FILLING OUT! Page 23 of 24 Pages This Amendment No. 2 amends Amendment No. 1 to the Statement on 13(G) filed by Accel IV L.P., a Delaware limited partnership ("A4"), Accel IV Associates L.P., a Delaware limited partnership and the general partner of A4 ("A4A"), Accel Keiretsu L.P., a Delaware limited partnership ("AK"), Accel Partners & Co. Inc., a Delaware corporation and the general partner of AK ("AP&C"), Accel Investors '95 L.P., a Delaware limited partnership ("AI95"), Accel VII L.P., a Delaware limited partnership ("A7"), Accel VII Associates L.L.C., a Delaware limited liability company and the general partner of A7 ("A7A"), Accel Internet Fund III L.P., a Delaware limited partnership ("AIF3"), Accel Internet Fund III Associates L.L.C., a Delaware limited liability company and the general partner of AIF3 ("AIF3A"), Accel Investors '99 L.P., a Delaware limited partnership ("AI99"), Ellmore C. Patterson Partners ("ECPP"), a Delaware limited partnership, the Swartz Family Partnership L.P. (which has changed its name to Homestake Partners L.P.), a Delaware limited partnership and a general partner of A4A ("HP"), Alan K. Austin ("Austin"), a managing member of A7A and AIF3A, James W. Breyer ("Breyer"), a general partner of A4A, AI95 and AI99, an officer of AP&C and a managing member of A7A and AIF3A, Luke B. Evnin ("Evnin"), a general partner of A4A and AI95, Eugene D. Hill, III ("Hill"), a general partner of A4A and AI95, Paul H. Klingenstein ("Klingenstein"), a general partner of A4A and AI95, Arthur C. Patterson ("Patterson"), a general partner of ECPP, A4A, AI95 and AI99, an officer of AP&C and a managing member of A7A and AIF3A, G. Carter Sednaoui ("Sednaoui"), a general partner of A4A, AI95 and AI99, an officer of AP&C and a managing member of A7A and AIF3A, James R. Swartz ("Swartz"), a general partner of HP, A4A, AI95 and AI99, an officer of AP&C and a managing member of A7A and AIF3A and J. Peter Wagner ("Wagner"), a managing member of A7A and AIF3A and a general partner of AI99. The foregoing entities and individuals are collectively referred to as the "Reporting Persons." Only those items as to which there has been a change are included in this Amendment No. 2. Item 4. Ownership. Provide the following information regarding the aggregate number and percentage of the class of securities of the issuer identified in Item 1. 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, 2002. (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 the 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. Item 5. Ownership of Five Percent or Less of a Class If this statement is being filed to report the fact that as of the date hereof the reporting person has ceased to be the beneficial owner of more than five percent of the class of securities, check the following: [ ] Yes Page 24 of 24 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. Date: February 7, 2003 Entities: Accel IV L.P. Accel Keiretsu L.P. Accel Investors '95 L.P. Accel IV Associates L.P. Accel Partners & Co. Inc. By: /s/ Alan K. Austin Homestake Partners L.P. -------------------------- Accel VII L.P. Alan K. Austin, Accel VII Associates L.L.C. Attorney-in-fact for Accel Internet Fund III L.P. above-listed entities Accel Internet Fund III Associates L.L.C. Accel Investors '99 L.P. Ellmore C. Patterson Partners Individuals: Alan K. Austin James W. Breyer Luke B. Evnin By: /s/ Alan K. Austin Eugene D. Hill, III -------------------------- Paul H. Klingenstein Alan K. Austin, Arthur C. Patterson Attorney-in-fact for J. Peter Wagner above-listed individuals G. Carter Sednaoui James R. Swartz