X0508 4 2025-12-30 0001192448 GLAUKOS Corp GKOS 0001920053 Navratil Tomas C/O GLAUKOS CORPORATION ONE GLAUKOS WAY ALISO VIEJO CA 92656 false true false false CHIEF DEVELOPMENT OFFICER 0 Common Stock 2025-12-30 4 F 0 510 114.24 D 77451 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 43,562 restricted stock units that have not yet vested or been delivered to the Reporting Person. Diana Scherer, Attorney-in-Fact 2025-12-31