X0202 4 2007-10-22 0 0001230355 TRANS1 INC TSON 0001317308 ATV Associates VII, L.L.C. 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 0001138942 ADVANCED TECHNOLOGY VENTURES VII LP 1000 WINTER STREET SUITE 3700 WALTHAM MA 02451 0 0 1 0 Common Stock 2007-10-22 4 C 0 2427307 A 2427307 I By Advanced Technology Ventures VII, L.P. Common Stock 2007-10-22 4 C 0 97407 A 97407 I By Advanced Technology Ventures VII (B), L.P. Common Stock 2007-10-22 4 C 0 46820 A 46820 I By Advanced Technology Ventures VII (C), L.P. Common Stock 2007-10-22 4 C 0 14463 A 14463 I By ATV Entrepreneurs VII, L.P. Series B Convertible Preferred Stock 2007-10-22 4 C 0 1531339 D Common Stock 1531339 0 I By Advanced Technology Ventures VII, L.P. Series C Convertible Preferred Stock 2007-10-22 4 C 0 895968 D Common Stock 895968 0 I By Advanced Technology Ventures VII, L.P. Series B Convertible Preferred Stock 2007-10-22 4 C 0 61452 D Common Stock 61452 0 I By Advanced Technology Ventures VII (B), L.P. Series C Convertible Preferred Stock 2007-10-22 4 C 0 35955 D Common Stock 35955 0 I By Advanced Technology Ventures VII (B), L.P. Series B Convertible Preferred Stock 2007-10-22 4 C 0 29538 D Common Stock 29538 0 I By Advanced Technology Ventures VII (C), L.P. Series C Convertible Preferred Stock 2007-10-22 4 C 0 17282 D Common Stock 17282 0 I By Advanced Technology Ventures VII (C), L.P. Series B Convertible Preferred Stock 2007-10-22 4 C 0 9125 D Common Stock 9125 0 I By ATV Entrepreneurs VII, L.P. Series C Convertible Preferred Stock 2007-10-22 4 C 0 5338 D Common Stock 5338 0 I By ATV Entrepreneurs VII, L.P. Not applicable. The reported securities are owned directly by Advanced Technology Ventures VII, L.P. and indirectly by ATV Associates VII, L.L.C., as general partner of Advanced Technology Ventures VII, L.P. ATV Associates VII, L.L.C. and each of the other reporting persons disclaim beneficial ownership of these securities except to the extent of their respective pecuniary interest therein. The reported securities are owned directly by Advanced Technology Ventures VII (B), L.P. and indirectly by ATV Associates VII, L.L.C., as general partner of Advanced Technology Ventures VII (B), L.P. ATV Associates VII, L.L.C. and each of the other reporting persons disclaim beneficial ownership of these securities except to the extent of their respective pecuniary interest therein. The reported securities are owned directly by Advanced Technology Ventures VII (C), L.P. and indirectly by ATV Associates VII, L.L.C., as general partner of Advanced Technology Ventures VII (C), L.P. ATV Associates VII, L.L.C. and each of the other reporting persons disclaim beneficial ownership of these securities except to the extent of their respective pecuniary interest therein. The reported securities are owned directly by ATV Entrepreneurs VII, L.P. and indirectly by ATV Associates VII, L.L.C., as general partner of ATV Entrepreneurs VII, L.P. ATV Associates VII, L.L.C. and each of the other reporting persons disclaim beneficial ownership of these securities except to the extent of their respective pecuniary interest therein. The reported securities automatically converted into shares of Common Stock on a 1-for-1 basis immediately prior to the closing of the Issuer's initial public offering on October 22, 2007. The Date of Event is based upon the closing date of the Issuer's initial public offering of Common Stock. See Exhibit 99.1 - Joint Filer Information. EXHIBIT LIST: Exhibit 99.1 - Joint Filer Information /s/ Michael A. Carusi 2007-10-22 Michael A. Carusi 2007-10-22 Michael A. Carusi 2007-10-22 Michael A. Carusi 2007-10-22 Michael A Carusi 2007-10-22