X0202 3 2007-05-16 0 0001293282 TechTarget Inc TTGT 0001018394 SPOON ALAN G C/O POLARIS VENTURE PARTNERS 1000 WINTER STREET WALTHAM MA 02451 1 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 0001114126 POLARIS VENTURE MANAGEMENT CO III LLC 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 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 Series A Preferred Stock Common Stock, par value $0.001 4075435 I See foot note Series A Preferred Stock Common Stock, par value $0.001 105819 I See foot note Series A Preferred Stock Common Stock, par value $0.001 64523 I See foot note Series B Preferred Stock Common Stock, par value $0.001 1764604 I See foot note Series B Preferred Stock Common Stock, par value $0.001 45817 I See foot note Series B Preferred Stock Common Stock, par value $0.001 27812 I See foot note Series B Preferred Stock Common Stock, par value $0.001 1806356 I See foot note Series B Preferred Stock Common Stock, par value $0.001 31878 I See foot note Series C Preferred Stock Common Stock, par value $0.001 1244329 I See foot note Series C Preferred Stock Common Stock, par value $0.001 23333 I See foot note Immediately Not applicable Each outstanding share of the Issuer's Series A, Series B and Series C Convertible Preferred Stock will automatically convert into 0.25 shares of the Issuer's Common Stock upon the closing of the public offering of the Issuer's Common Stock. These shares are directly held by Polaris Venture Partners III, L.P. ("PVP III"). These shares are directly held by Polaris Venture Partners Entrepreneurs' Fund III, L.P. ("Entrepreneurs' III"). These shares are directly held by Polaris Venture Founders' Fund III, L.P. ("Founders III"). Each of Jonathan A. Flint ("Flint"), Terrance G. McGuire ("McGuire") and Alan G. Spoon ("Spoon") are the managing members of Polaris Venture Management Co. III, L.L.C. ("Polaris III"), which is the sole general partner for each of PVP III, Entrepreneurs' III and Founders III. Flint, McGuire, Spoon and Polaris III may be deemed to beneficially own the shares held by PVP III, Entrepreneurs' III and Founders III, but Flint, McGuire, Spoon and Polaris III disclaim beneficial ownership of such shares except to the extent of their pecuniary interest therein. These shares are directly held by Polaris Venture Partners IV, L.P. ("PVP IV"). These shares are directly held by Polaris Venture Partners Entrepreneurs' Fund IV, L.P. ("Entrepreneurs' IV"). Each of Flint, McGuire and Spoon are the managing members of Polaris Venture Management Co. IV, L.L.C. ("Polaris IV"), which is the sole general partner for each of PVP IV and Entrepreneurs' IV. Each of Flint, McGuire, Spoon and Polaris IV may be deemed to beneficially own the shares held by PVP IV and Entrepreneurs' IV, but Flint, McGuire, Spoon and Polaris IV disclaim beneficial ownership of such shares except to the extent of their pecuniary interest therein. /s/ Rick Olin, Attorney-in-Fact 2007-05-16 /s/ Jonathan A. Flint 2007-05-16 /s/ Terrance G. McGuire 2007-05-16 By: William Bilodeau Authorized signatory for Polaris Venture Management Co. III, LLC 2007-05-16 By: William Bilodeau Authorized signatory for Polaris Venture Management Co. IV, LLC 2007-05-16 By: William Bilodeau Authorized signatory for Polaris Venture Partners III, L.P. 2007-05-16 By: William Bilodeau Authorized signatory for Polaris Venture Partners Entrepreneurs' Fund III, L.P. 2007-05-16 By: William Bilodeau Authorized signatory for Polaris Venture Partners Founders' Fund III, L.P. 2007-05-16 By: William Bilodeau Authorized signatory for Polaris Venture Partners IV, L.P. 2007-05-16 By: William Bilodeau Authorized signatory for Polaris Venture Partners Entrepreneurs' Fund IV, L.P 2007-05-16