(4) | Based solely on (i) a schedule 13D/A filed with the SEC on September 15, 2017 by Versant Venture Capital IV, L.P., or VVC IV, Versant Side Fund IV, L.P., or VSF IV, Versant Venture Capital V, L.P., or VVC V, Versant Affiliates Fund V, L.P., or VAF V, Versant Ophthalmic Affiliates Fund I, L.P., or VOA, Versant Venture Capital V (Canada) LP, or VVC CAN; and (ii) Form 4s filed with the SEC on December 23, 2016 by Drs. Bolzon and Woiwode with respect to shares held by Versant Venture Management, LLC, or VVM. Consists of 2,736,032 common shares beneficially owned by VVC IV, 16,224 common shares beneficially owned by VSF IV, 1,629,204 common shares beneficially owned by VVC V, 47,801 common shares beneficially owned by VAF V, 52,987 common shares beneficially owned by VOA, 123,994 common shares beneficially owned by VVC CAN, and 684,014 common shares beneficially owned by VVM. Versant Ventures IV, LLC, or VV IV, serves as the sole general partner of VVC IV and VSF IV and owns no shares directly. Brian G. Atwood, Samuel D. Colella, Ross A. Jaffe, William J. Link, Rebecca B. Robertson, Bradley Bolzon, Ph.D., Charles M. Warden, Kirk G. Nielsen, Thomas Woiwode and Robin L. Praeger are managing directors of VV IV and share voting and dispositive power over the shares held by VVC IV and VSF IV; however, they each disclaim beneficial ownership of the shares held by VVC IV and VSF IV, except to the extent of their pecuniary interests therein. Versant Ventures V, LLC, or VV V, serves as the sole general partner of VOA, VAF V and VVC V and owns no shares directly. Versant Ventures V (Canada) GP-GP, Inc. or VV V CAN GP, serves as the sole general partner of Versant Ventures V (Canada), L.P., or VV V CAN, which serves as the sole general partner of VVC CAN and owns no shares directly. Samuel D. Colella, William J. Link, Bradley Bolzon, Ph.D., Robin L. Praeger, Kirk G. Nielson and Thomas Woiwode, Ph.D. are managing directors of VV V and directors of VV V CAN GP and share voting and dispositive power over the shares held by VOA, VAF V, VVC V and VVC CAN; however, they each disclaim beneficial ownership of the shares held by VOA, VAF V, VVC V and VVC CAN, except to the extent of their pecuniary interests therein. Drs. Bolzon and Woiwode are managing directors of VVM, an affiliate of VV IV and VV V, and they each disclaim beneficial ownership of the shares held by VVM except to the extent of their pecuniary interests therein. Drs. Bolzon and Woiwode are members of our board |