X0306 4 2015-06-30 0 0001192448 GLAUKOS Corp GKOS 0001293171 Kliman Gilbert H C/O INTERWEST PARTNERS 2710 SAND HILL ROAD, SUITE 200 MENLO PARK CA 94025 1 0 0 0 Common Stock 2015-06-30 4 C 0 2603362 A 2603362 I Through InterWest Partners IX, L.P. Series C Convertible Preferred Stock 2015-06-30 4 C 0 1523809 0 D Common Stock 1523809 0 I Through InterWest Partners IX, L.P. Series D Convertible Preferred Stock 2015-06-30 4 C 0 674510 0 D Common Stock 674510 0 I Through InterWest Partners IX, L.P. Series E Convertible Preferred Stock 2015-06-30 4 C 0 151653 0 D Common Stock 151653 0 I Through InterWest Partners IX, L.P. Series F Convertible Preferred Stock 2015-06-30 4 C 0 253390 0 D Common Stock 253390 0 I Through InterWest Partners IX, L.P. The shares of Series C Convertible Preferred Stock, Series D Convertible Preferred Stock, Series E Convertible Preferred Stock and Series F Convertible Preferred Stock automatically converted into shares of common stock on a 1:1 basis immediately prior to the consummation of the Issuer's initial public offering and had no expiration date. Shares held by InterWest Partners IX, L.P., a California limited partnership (''IWP-9''). InterWest Management Partners IX, LLC, a California limited liability company (''IMP-9'') serves as the sole general partner of IWP-9 and owns no shares directly. Dr. Kliman is a managing director of IMP-9 and shares voting and dispositive power over the shares held by IWP-9; however, he disclaims beneficial ownership of the shares held by such entities except to the extent of his pecuniary interests therein. /s/ Katie A. Passalacqua, Attorney-in-Fact for Gilbert H. Kliman 2015-06-30