X0508 4 2025-12-30 0001192448 GLAUKOS Corp GKOS 0001644557 Burns Thomas William C/O GLAUKOS CORPORATION ONE GLAUKOS WAY ALISO VIEJO CA 92656 true true false false CHAIRMAN & CEO 0 Common Stock 2025-12-30 4 F 0 1098 114.24 D 153775 D Consists of shares withheld by the Issuer with respect to tax withholding obligations of the Reporting Person upon vesting and delivery of shares of common stock underlying restricted stock units previously granted by the Issuer on March 24, 2022. Includes 89,621 restricted stock units that have not yet vested or been delivered to the Reporting Person. Diana Scherer, Attorney-in-Fact 2025-12-31