X0305 4 2012-04-03 0 0001372375 Millennial Media Inc. MM 0001362890 Deer VI & Co. LLC C/O BESSEMER VENTURE PARTNERS 1865 PALMER AVENUE, SUITE 104 LARCHMONT NY 10538 1 0 1 0 0001362888 Bessemer Venture Partners Co-Investment L.P. C/O BESSEMER VENTURE PARTNERS 1865 PALMER AVENUE, SUITE 104 LARCHMONT NY 10538 1 0 1 0 0001362889 Bessemer Venture Partners VI Institutional L.P. C/O BESSEMER VENTURE PARTNERS 1865 PALMER AVENUE, SUITE 104 LARCHMONT NY 10538 1 0 1 0 0001362891 Bessemer Venture Partners VI L.P. C/O BESSEMER VENTURE PARTNERS 1865 PALMER AVENUE, SUITE 104 LARCHMONT NY 10538 1 0 1 0 Common Stock 2012-04-03 4 C 0 13500231 A 13500231 I By Funds Series A-1 Convertible Preferred Stock 2012-04-03 4 C 0 2926830 0.00 D Common Stock 2926830 0 I By Funds Series A-2 Convertible Preferred Stock 2012-04-03 4 C 0 4724110 0.00 D Common Stock 4724110 0 I By Funds Series B Convertible Preferred Stock 2012-04-03 4 C 0 2537370 0.00 D Common Stock 2537370 0 I By Funds Series C Convertible Preferred Stock 2012-04-03 4 C 0 896636 0.00 D Common Stock 896636 0 I By Funds Series D Convertible Preferred Stock 2012-04-03 4 C 0 2415285 0.00 D Common Stock 2415285 0 I By Funds The total represents shares received upon conversion of shares of Series A-1, Series A-2, Series B, Series C and Series D convertible preferred stock. Effective upon the closing of the issuer's initial public offering of its common stock, each share of convertible preferred stock automatically converted into one share of common stock. The convertible preferred stock had no expiration date. The total includes 10,010,551 shares held by Bessemer Venture Partners VI, L.P. ("BVP VI"), 3,362,330 shares held by Bessemer Venture Partners Co-Investment, L.P. ("BVP Co-Investment") and 127,350 shares held by Bessemer Venture Partners VI Institutional, L.P. ("BVP Institutional," and together with BVP VI and BVP Co-Investment, the "Funds"). Deer VI & Co LLC ("Deer VI") is the general partner of each of the Funds. The Funds, together with Deer VI, are the "Bessemer Entities." Deer VI disclaims beneficial ownership of the securities owned directly by the Funds, and this report shall not be deemed as admission that Deer VI is the beneficial owner of such securities, except to the extent of its pecuniary interest therein, if any, by virtue of its general partner interests in the Funds. Robert Goodman, an executive manager of Deer VI, serves as the representative of the Bessemer Entities on the issuer's board of directors. The total includes 2,162,195 shares held by BVP VI, 728,050 shares held by BVP Co-Investment and 36,585 shares held by BVP Institutional. The total includes 3,489,935 shares held by BVP VI, 1,175,125 shares held by BVP Co-Investment and 59,050 shares held by BVP Institutional. The total includes 1,874,480 shares held by BVP VI, 631,175 shares held by BVP Co-Investment and 31,715 shares held by BVP Institutional. The total includes 672,477 shares held by BVP VI and 224,159 shares held by BVP Co-Investment. The total includes 1,811,464 shares held by BVP VI and 603,821 shares held by BVP Co-Investment. /s/ J. Edmund Colloton, Executive Manager of Deer VI & Co. LLC 2012-04-04 /s/ J. Edmund Colloton, Executive Manager of Deer VI & Co. LLC, the General Partner of Bessemer Venture Partners Co-Investment L.P. 2012-04-04 /s/ J. Edmund Colloton, Executive Manager of Deer VI & Co. LLC, the General Partner of Bessemer Venture Partners VI Institutional L.P. 2012-04-04 /s/ J. Edmund Colloton, Executive Manager of Deer VI & Co. LLC, the General Partner of Bessemer Venture Partners VI L.P. 2012-04-04