X0306 4 2018-08-29 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 2018-08-29 4 S 0 500000 60.3755 D 518362 I By InterWest Partners IX, LP Common Stock 2018-08-29 4 J 0 515000 0.00 D 3362 I By InterWest Partners IX, LP Common Stock 2018-08-29 4 J 0 5150 0.00 A 5150 I By InterWest Management Partners IX, LLC Common Stock 2018-08-29 4 J 0 5150 0.00 D 0 I By InterWest Management Partners IX, LLC Common Stock 2018-08-29 4 J 0 677 0.00 A 7393 D Common Stock 2018-08-30 4 S 0 2760 62.39 D 4633 D Price reflected is the weighted-average sale price for shares sold. The range of sale prices for the transactions reported was $59.33 to $61.50 per share. The Reporting Person undertakes to provide, upon request by the SEC staff, the Issuer, or a security holder of the Issuer, full information regarding the number of shares sold at each separate price. Represents pro rata in-kind distribution by InterWest Partners IX, LP ("IP9") without consideration to its limited and general partners in accordance with the terms of the InterWest Partners IX, LP Limited Partnership Agreement. Includes 5,150 shares distributed to InterWest Management Partners IX, LLC ("IMP9") its general partner. Represents pro rata in-kind distribution by IMP9 without consideration to its members in accordance with the terms of the InterWest Management Partners IX, LLC Operating Agreement. Includes 677 shares distributed to Kliman. The shares are owned by IP9. The general partner of IP9 is IMP9. Oronsky, Kliman, and Nasr have shared voting and investment control over shares owned by IP9, and disclaim beneficial ownership of those securities, except to the extent of their pecuniary interest therein Includes 4,633 restricted stock units that have not yet vested or been delivered to the Reporting Person. /s/ Gilbert H. Kliman by Karen A. Wilson, Power of Attorney 2018-08-31