GLAUKOS Corp — Director's Dealing 2025

Sep 22, 2025

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: GLAUKOS Corp (GKOS)
CIK: 0001192448
Period of Report: 2025-09-18

Reporting Person: Burns Thomas William (N/A)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2025-09-18	Common Stock	A	15417	—	Acquired	155862	Direct
2025-09-19	Common Stock	F	1098	$83.47	Disposed	154764	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	893932	Indirect
Common Stock	238107	Indirect
Common Stock	120000	Indirect
Common Stock	100000	Indirect
Common Stock	100000	Indirect

Footnotes

F1: Represents shares of common stock underlying a portion of an award of restricted stock units previously granted by the Issuer on March 18, 2021, the vesting of which was subject to the Issuer's achievement of certain pre-determined operational targets over a multi-year performance period. The Compensation, Nominating & Governance Committee of the Issuer's Board of Directors determined on September 18, 2025 that two of the operational targets had been achieved. The number of shares reported herein consists of the portion of the award that was deemed earned based upon the achievement of the operational targets. 50% of the number of shares of common stock reported herein will vest and be delivered on September 23, 2025 and the remaining 50% will vest and be delivered in June 2026.

F2: Includes 97,330 restricted stock units that have not yet vested or been delivered to the Reporting Person.

F3: 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.

F4: Includes 95,246 restricted stock units that have not yet vested or been delivered to the Reporting Person.