X0303 4 2010-12-09 0 0001293282 TechTarget Inc TTGT 0001018394 SPOON ALAN G C/O POLARIS VENTURE PARTNERS 1000 WINTER STREET WALTHAM MA 02451 0 0 1 0 0001295676 Flint Jonathan A C/O POLARIS VENTURE PARTNERS 1000 WINTER STREET WALTHAM MA 02451 0 0 1 0 0001117003 MCGUIRE TERRANCE C/O POLARIS VENTURE PARTNERS 1000 WINTER STREET WALTHAM MA 02451 0 0 1 0 0001157864 POLARIS VENTURE PARTNERS IV LP C/O POLARIS VENTURE PARTNERS 1000 WINTER STREET WALTHAM MA 02451 0 0 1 0 0001170720 POLARIS VENTURE PARTNERS ENTREPRENEURS FUND IV LP C/O POLARIS VENTURE PARTNERS 1000 WINTER STREET WALTHAM MA 02451 0 0 1 0 0001295438 Polaris Venture Management Co IV LLC C/O POLARIS VENTURE PARTNERS 1000 WINTER STREET WALTHAM MA 02451 0 0 1 0 0001104639 POLARIS VENTURE PARTNERS III LP C/O POLARIS VENTURE PARTNERS 1000 WINTER STREET WALTHAM MA 02451 0 0 1 0 0001114889 POLARIS VENTURE PARTNERS ENTREPRENEURS FUND III LP C/O POLARIS VENTURE PARTNERS 1000 WINTER STREET WALTHAM MA 02451 0 0 1 0 0001114437 POLARIS VENTURE PARTNERS FOUNDERS FUND III LP C/O POLARIS VENTURE PARTNERS 1000 WINTER STREET WALTHAM MA 02451 0 0 1 0 0001114126 POLARIS VENTURE MANAGEMENT CO III LLC C/O POLARIS VENTURE PARTNERS 1000 WINTER STREET WALTHAM MA 02451 0 0 1 0 Common Stock 2010-12-09 4 S 0 3839599 6.00 D 2000440 I See Footnote Common Stock 2010-12-09 4 S 0 99695 6.00 D 51941 I See Footnote Common Stock 2010-12-09 4 S 0 60706 6.00 D 31629 I See Footnote The reportable securities are owned directly by Polaris Venture Partners III, L.P. ("PVP III"). Polaris Venture Management Co. III, L.L.C. ("PVM III") is the general partner of PVP III. PVM III disclaims beneficial ownership of these securities and this report shall not be deemed an admission that PVM III is the beneficial owner of such securities for purposes of Section 16 or for any other purpose, except to the extent of its pecuniary interest therein. Each of Jonathan A. Flint ("Flint"), Terrance G. McGuire ("McGuire") and Alan G. Spoon ("Spoon") are the managing members of PVM III. Each of Flint, McGuire and Spoon disclaims beneficial ownership of these securities and this report shall not be deemed an admission that any of them is the beneficial owner of such securities for purposes of Section 16 or for any other purpose, except to the extent of their pecuniary interest therein. The reportable securities are owned directly by Polaris Venture Partners Founders' Fund III LP ("PVPF III"). PVM III is the general partner of PVPF III. PVM III disclaims beneficial ownership of these securities and this report shall not be deemed an admission that PVM III is the beneficial owner of such securities for purposes of Section 16 or for any other purpose, except to the extent of its pecuniary interest therein. Each of Flint, McGuire McGuire and Spoon are the managing members of PVM III. Each of Flint, McGuire and Spoon disclaims beneficial ownership of these securities and this report shall not be deemed an admission that any of them is the beneficial owner of such securities for purposes of Section 16 or for any other purpose, except to the extent of their pecuniary interest therein. The reportable securities are owned directly by Polaris Venture Partners Entrepreneurs' Fund III, L.P. ("PVPE III"). PVM III is the general partner of PVPE III. PVM III disclaims beneficial ownership of these securities and this report shall not be deemed an admission that PVM III is the beneficial owner of such securities for purposes of Section 16 or for any other purpose, except to the extent of its pecuniary interest therein. Each of Flint, McGuire McGuire and Spoon are the managing members of PVM III. Each of Flint, McGuire and Spoon disclaims beneficial ownership of these securities and this report shall not be deemed an admission that any of them is the beneficial owner of such securities for purposes of Section 16 or for any other purpose, except to the extent of their pecuniary interest therein. /s/ Alan Spoon Alan Spoon 2010-12-10 /s/ Jonathan A. Flint Jonathan A. Flint 2010-12-10 /s/ Terrance G. McGuire Terrance G. McGuire 2010-12-10 /s/ John Gannon Polaris Venture Management Co. IV, L.L.C. By: John Gannon Authorized signatory for Polaris Venture Management Co. IV, L.L.C. 2010-12-10 /s/ John Gannon Polaris Venture Partners IV, L.P. By: John Gannon Authorized signatory for Polaris Venture Partners IV, L.P. 2010-12-10 /s/ John Gannon Polaris Venture Partners Entrepreneurs' Fund IV, L.P. By: John Gannon Authorized signatory for Polaris Venture Partners Entrepreneurs' Fund IV, L.P. 2010-12-10 /s/ John Gannon Polaris Venture Management Co. III, L.L.C. By: John Gannon Authorized signatory for Polaris Venture Management Co. III, L.L.C. 2010-12-10 /s/ John Gannon Polaris Venture Partners III, L.P. By: John Gannon Authorized signatory for Polaris Venture Partners III, L.P. 2010-12-10 /s/ John Gannon Polaris Venture Partners Founders' Fund III, L.P. By: John Gannon Authorized signatory for Polaris Venture Partners Founders' Fund III, L.P. 2010-12-10 /s/ John Gannon Polaris Venture Partners Entrepreneurs' Fund III, L.P. By: John Gannon Authorized signatory for Polaris Venture Partners Entrepreneurs' Fund III, L.P. 2010-12-10