X0206 3 2018-10-30 0 0001410939 Ophthotech Corp. OPHT 0001456590 Versant Venture Capital IV, L.P. ONE SANSOME STREET SUITE 3630 SAN FRANCISCO CA 94104 0 0 1 0 0001456591 Versant Side Fund IV, L.P. ONE SANSOME STREET SUITE 3630 SAN FRANCISCO CA 94104 0 0 1 0 0001456589 Versant Ventures IV, LLC ONE SANSOME STREET SUITE 3630 SAN FRANCISCO CA 94104 0 0 1 0 Common Stock 5012624 I See footnote Common Stock 31577 I See footnote This report on Form 3 is jointly filed by Versant Venture Capital IV, L.P. ("VVC IV") and Versant Side Fund IV, L.P. ("VSF IV"). Each of the Reporting Persons disclaims beneficial ownership of the securities reported herein, except to the extent of its pecuniary interest therein, if any, and this report shall not be deemed an admission that any such entity is a beneficial owner of such securities for the purpose of Section 16 or for any other purpose. These securities are held of record by VVC IV. Versant Ventures IV, LLC ("VV IV") is the sole general partner of VVC IV and may be deemed to have voting and investment power over the securities held by VVC IV and as a result may be deemed to have beneficial ownership over such securities. 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; however, they each disclaim beneficial ownership of such securities, except to the extent of their pecuniary interests therein. These securities are held of record by VSF IV. VV IV is the sole general partner of VSF IV and may be deemed to have voting and investment power over the securities held by VSF IV and as a result may be deemed to have beneficial ownership over such securities. 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 VSF IV; however, they each disclaim beneficial ownership of such securities, except to the extent of their pecuniary interests therein. /s/ Robin L. Praeger, Managing Director of Versant Ventures IV, LLC, general partner of Versant Venture Capital IV, L.P. 2018-11-09 /s/ Robin L. Praeger, Managing Director of Versant Ventures IV, LLC, general partner of Versant Side Fund IV, L.P. 2018-11-09 /s/ Robin L. Praeger, Managing Director of Versant Ventures IV, LLC 2018-11-09