X0202 4 2007-05-04 1 0001130258 ACME PACKET INC APKT 0001138942 ADVANCED TECHNOLOGY VENTURES VII LP 1000 WINTER STREET, SUITE 3700 WALTHAM MA 02451 0 0 1 0 0001294525 Advanced Technology Ventures VII(B), L.P. 1000 WINTER STREET, SUITE 3700 WALTHAM MA 02451 0 0 1 0 0001294527 Advanced Technology Ventures VII(C), L.P. 1000 WINTER STREET, SUITE 3700 WALTHAM MA 02451 0 0 1 0 0001294513 ATV Entrepreneurs VII, L.P. 1000 WINTER STREET, SUITE 3700 WALTHAM MA 02451 0 0 1 0 0001317308 ATV Associates VII, L.L.C. 1000 WINTER STREET, SUITE 3700 WALTHAM MA 02451 0 0 1 0 0001321048 ATV Alliance 2001, L.P. 1000 WINTER STREET, SUITE 3700 WALTHAM MA 02451 0 0 1 0 0001321046 ATV Alliance 2002, L.P. 1000 WINTER STREET, SUITE 3700 WALTHAM MA 02451 0 0 1 0 0001317307 ATV Alliance Associates, L.L.C. 1000 WINTER STREET, SUITE 3700 WALTHAM MA 02451 0 0 1 0 Common Stock 2007-05-04 4 J 0 958618 D 5432273 I By fund Common Stock 2007-05-04 4 J 0 38469 D 217994 I By fund Common Stock 2007-05-04 4 J 0 18491 D 104782 I By fund Common Stock 2007-05-04 4 S 0 5713 11.97 D 32372 I By fund Common Stock 2007-05-04 4 S 0 3495 11.97 D 19804 I By fund Common Stock 2007-05-04 4 S 0 2168 11.97 D 12287 I By fund Pro-rata distribution of Common Stock to its partners by Advanced Technology Ventures VII, L.P. ("ATV VII"), of which 5,432,273 shares have been retained. Not applicable. These shares are owned by ATV VII. ATV VII is under common control with Advanced Technology Ventures VII (B), L.P. ("ATV VII(B)"), Advanced Technology Ventures VII (C), L.P. ("ATV VII(C)"), and ATV Entrepreneurs VII, L.P. ("ATVE VII"). ATV Associates VII, L.L.C. ("ATV Associates") serves as the sole general partner of ATV VII, ATV VII(B), ATV VII(C), and ATVE VII. ATV Associates disclaims beneficial ownership of such shares, except to the extent of its pecuniary interest therein. Pro-rata distribution of Common Stock to its partners by ATV VII(B), of which 217,994 shares have been retained. These shares are owned by ATV VII(B). ATV Associates disclaims beneficial ownership of such shares, except to the extent of its pecuniary interest therein. Pro-rata distribution of Common Stock to its partners by ATV VII(C), of which 104,782 shares have been retained. These shares are owned by ATV VII(C). ATV Associates disclaims beneficial ownership of such shares, except to the extent of its pecuniary interest therein. These shares are owned by ATVE VII. ATV Associates VII, L.L.C. disclaims beneficial ownership of such shares, except to the extent of its pecuniary interest therein. These shares are owned by ATV Alliance 2001, L.P. ("ATVA 2001"), which is under common control with ATV Alliance 2002, L.P. ("ATVA 2002"). ATV Alliance Associates, L.L.C. serves as the sole general partner of ATVA 2001 and ATVA 2002. ATV Alliance Associates, L.L.C. disclaims beneficial ownership of such shares, except to the extent of its pecuniary interest therein. These shares are owned by ATVA 2002. ATV Alliance Associates, L.L.C. disclaims beneficial ownership of such shares, except to the extent of its pecuniary interest therein. By ATV Associates VII, LLC, By /s/ Robert Hower, Managing Director 2007-05-08 By ATV Associates VII, LLC, By /s/ Robert Hower, Managing Director 2007-05-08 By ATV Associates VII, LLC, By /s/ Robert Hower, Managing Director 2007-05-08 By ATV Associates VII, LLC, By /s/ Robert Hower, Managing Director 2007-05-08 Robert Hower, Managing Director 2007-05-08 By ATV Alliance Associates L.L.C. By /s/ Jean George, Manager 2007-05-08 By ATV Alliance Associates L.L.C. By /s/ Jean George, Manager 2008-05-08 Jean George, Manager 2007-05-08