Thomas W. Burns - 11 Dec 2025 Form 4 Insider Report for GLAUKOS Corp (GKOS)

Role: CHAIRMAN & CEO, Director
Signature: Diana Scherer, Attorney-in-Fact
Issuer symbol: GKOS
Transactions as of: 11 Dec 2025
Net transactions value: $0
Form type: 4
Filing time: 15 Dec 2025, 17:59:01 UTC
Previous filing: 24 Sep 2025
Next filing: 31 Dec 2025
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Burns Thomas William	CHAIRMAN & CEO, Director	C/O GLAUKOS CORPORATION, ONE GLAUKOS WAY, ALISO VIEJO	Diana Scherer, Attorney-in-Fact	15 Dec 2025	0001644557

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	GKOS	Common Stock	Award	$0	+4,168	+2.8%	$0.000000	154,873	11 Dec 2025	Direct	F1, F2
holding	GKOS	Common Stock						893,932	11 Dec 2025	Through the Burns Family Trust
holding	GKOS	Common Stock						238,107	11 Dec 2025	Through the Burns Annuity Trust
holding	GKOS	Common Stock						120,000	11 Dec 2025	Through the Burns Charitable Remainder Trust
holding	GKOS	Common Stock						100,000	11 Dec 2025	Through the Thomas W. Burns Irrevocable Trust
holding	GKOS	Common Stock						100,000	11 Dec 2025	Through the Janet M. Burns Irrevocable Trust

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
transaction	GKOS	Stock Option (Right to Buy)	Award	$0	+8,416	+11%	$0.000000	86,262	11 Dec 2025	Common Stock	8,416	$55.18	Direct	F3, F4

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	Represents shares of common stock underlying a portion of an award of restricted stock units previously granted by the Issuer on March 24, 2022, 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 and Governance Committee of the Issuer's Board of Directors determined that certain of the operational targets had been achieved. The number of shares of common stock reported herein consists of the portion of the award that was 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 in March 2026, and the remaining 50% will vest and be delivered in December 2026.
F2	Includes 91,705 restricted stock units that have not yet vested or been delivered to the Reporting Person.
F3	Represents a portion of an option to purchase shares of common stock previously granted by the Issuer on March 24, 2022, 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 determined that certain of the operational targets had been achieved. The number of shares of common stock subject to the stock option as reported herein consists of the portion of the award that was earned based upon the achievement of the operational targets.
F4	50% of the portion of the option reported herein will vest and become exercisable in March 2026. 50% of the portion of the option reported herein will vest and become exercisable in December 2026.