SEC Form 4

FORM 4		UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940	OMB APPROVAL OMB Number: 3235-0287 Estimated average burden hours per response: 0.5
	Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

1. Name and Address of Reporting Person* Gilliam Joseph E (Last) (First) (Middle) C/O GLAUKOS CORPORATION ONE GLAUKOS WAY (Street) ALISO VIEJO CA 92656 (City) (State) (Zip)	2. Issuer Name and Ticker or Trading Symbol GLAUKOS Corp [ GKOS ]	5. Relationship of Reporting Person(s) to Issuer (Check all applicable) Director 10% Owner X Officer (give title below) Other (specify below) PRESIDENT & COO
	3. Date of Earliest Transaction (Month/Day/Year) 03/14/2024
	4. If Amendment, Date of Original Filed (Month/Day/Year)	6. Individual or Joint/Group Filing (Check Applicable Line) X Form filed by One Reporting Person Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	03/14/2024		A		3,886(1)	A	$0	102,274(2)	D
Common Stock	03/14/2024		A		8,743(3)	A	$0	111,017(4)	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Stock Option (Right to Buy)	$55.18	03/14/2024		A		3,660(5)		(6)	03/24/2032	Common Stock	3,660	$0	43,596	D
Stock Option (Right to Buy)	$85.78	03/14/2024		A		15,161		(7)	03/14/2034	Common Stock	15,161	$0	15,161	D

Explanation of Responses:

1. 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 earning and 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 (the "Compensation Committee") determined on March 14, 2024 that one 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 target. 50% of the number of shares of common stock reported herein will vest and be delivered in March 2024 and the remaining 50% will vest and be delivered in December 2024.

2. Includes 85,771 restricted stock units that have not yet vested or been delivered to the Reporting Person.

3. Granted by the Issuer in the form of restricted stock units which vest over a four-year period, with 25% to vest on each anniversary of the grant date.

4. Includes 94,514 restricted stock units that have not yet vested or delivery of which has been deferred by the Reporting Person.

5. 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 Committee determined on March 14, 2024 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.

6. 50% of the portion of the option reported herein will vest and become exercisable in March 2024, and the remaining 50% will vest and become exercisable in December 2024.

7. This option was granted on March 14, 2024 and has a four-year vesting schedule in which 25% vests on the first anniversary of the grant date and the remainder vests in equal monthly installments for 36 months thereafter, such that the stock option vests in full on the four-year anniversary of the grant date.

	Diana Scherer, Attorney-in-Fact	03/18/2024
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.