X0306 4 2020-09-29 0 0001534133 GRAYBUG VISION, INC. GRAY 0001145929 SHAFFER CHRISTY L C/O GRAYBUG VISION, INC. 275 SHORELINE DRIVE, SUITE 450 REDWOOD CITY CA 94065 1 0 0 0 Common Stock 2020-09-29 4 C 0 1586490 A 1586490 I See footnote Common Stock 2020-09-29 4 P 0 18750 16.00 A 1605240 I See footnote Series A-2 Preferred Stock 2020-09-29 4 C 0 193224 D Common Stock 193224 0 I See footnote Series B Preferred Stock 2020-09-29 4 C 0 1242120 D Common Stock 1242120 0 I See footnote Series C Preferred Stock 2020-09-29 4 C 0 151146 D Common Stock 151146 0 I See footnote Each share of the Issuer's Series A-2 Preferred Stock, Series B Preferred Stock and Series C Preferred Stock automatically converted into 1 share of the Issuer's Common Stock immediately prior to the closing of the Issuer's initial public offering for no additional consideration and has no expiration date. These securities are held of record by Hatteras Venture Partners IV SBIC, L.P. ("HVP IV SBIC"). Hatteras Venture Advisors IV SBIC, L.L.C. ("HVA IV SBIC") is the general partner of HVP IV SBIC. The managing members of HVA IV SBIC include: Robert Ingram, Douglas Reed, Clay Thorp, John Crumpler and Kenneth Lee. These managing members share voting and dispositive power over the securities directly held by HVP IV SBIC. The Reporting Person is a partner of Hatteras Venture Partners and disclaims beneficial ownership of the securities held by HVP IV SBIC except to the extent of her pecuniary interest therein, if any. /s/ Frederic Guerard, as Attorney-in-Fact for Christy Shaffer 2020-09-29