F1These securities are directly beneficially owned by the designated Reporting Person and may be deemed to be indirectly beneficially owned by each of the Reporting Owners listed below, each of whom is a managing member of the designated Reporting Person. Pursuant to Instruction 5(b)(iv) of Form 3, each such individual has elected to report as indirectly beneficially owned the entire number of securities owned by the designated Reporting Person, however each of them disclaims beneficial ownership of any securities, and any proceeds thereof, that exceed his or her pecuniary interest therein and/or that are not actually distributed to him or her.
F2As managing members of the sole general partner of Domain Partners VIII, L.P., each Reporting Owner listed below (except for Kim P. Kamdar) may also be deemed to indirectly beneficially own the securities of the Issuer held by Domain Partners VIII, L.P., as reported on a Form 3 for Domain Partners VIII, L.P. filed on the same date as this Form 3.
F3As managing members of the sole general partner of DP VIII Associates, L.P., each Reporting Owner listed below (except for Kim P. Kamdar) may also be deemed to indirectly beneficially own the securities of the Issuer held by DP VIII Associates, L.P., as reported on a Form 3 for DP VIII Associates, L.P. filed on the same date as this Form 3.
F4These securities are directly beneficially owned by James C. Blair.
F5These shares are subject to the Issuer's right of repurchase, which lapses in 36 equal monthly installments beginning on June 1, 2014.