X0306 4 2022-06-02 0 0001192448 GLAUKOS Corp GKOS 0001539796 Stapley Marc C/O GLAUKOS CORPORATION, 229 AVENIDA FABRICANTE SAN CLEMENTE CA 92672 1 0 0 0 Common Stock 2022-06-02 4 A 0 4364 0.00 A 26186 D Represents a grant of restricted stock units that vest in full on the one-year anniversary of the grant date and are payable in an equivalent number of shares of the Issuer's common stock. Includes 8,504 restricted stock units that have not yet vested or been delivered to the Reporting Person, and 1,184 restricted stock units that have vested but have not yet been delivered to the Reporting Person based upon the Reporting Person's election to defer delivery. Diana Scherer, Attorney-in-Fact 2022-06-06