Glaukos (GKOS) director sells 15,000 shares after option exercise

Rhea-AI Filing Summary

Glaukos Corporation director Marc Stapley reported exercising stock options for 15,000 shares of common stock at an exercise price of $24.69 per share on January 22, 2026. On the same day, he sold an aggregate of 15,000 shares of common stock in multiple open-market transactions at weighted average prices ranging from about $126.07 to $129.78 per share under a pre-established Rule 10b5-1 trading plan adopted on June 4, 2025. After these transactions, Stapley held 37,449 shares of Glaukos common stock directly, which the footnote states includes 2,835 restricted stock units that have not yet vested or been delivered, as well as vested units for which delivery has been deferred.

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

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Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

X

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Stapley Marc

(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)

X	Director		10% Owner
	Officer (give title below)		Other (specify below)

3. Date of Earliest Transaction (Month/Day/Year)
01/22/2026

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	01/22/2026		M		15,000	A	$24.69	52,449(1)	D
Common Stock	01/22/2026		S(2)		3,812	D	$126.07(3)	48,637(1)	D
Common Stock	01/22/2026		S(2)		3,892	D	$126.96(4)	44,745(1)	D
Common Stock	01/22/2026		S(2)		1,671	D	$127.92(5)	43,074(1)	D
Common Stock	01/22/2026		S(2)		4,325	D	$129.11(6)	38,749(1)	D
Common Stock	01/22/2026		S(2)		1,300	D	$129.78(7)	37,449(1)	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)	$24.69	01/22/2026		M(8)			15,000	06/02/2017	06/02/2026	Common Stock	15,000	$0	0	D

Explanation of Responses:

1. Includes 2,835 restricted stock units that have not vested or been delivered to the Reporting Person, as well as restricted stock units that have vested but delivery of which has been deferred by the Reporting Person.

2. The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on June 4, 2025.

3. This transaction was executed in multiple trades at prices ranging from $125.59 to $126.55. The price reported above reflects the weighted average price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected.

4. This transaction was executed in multiple trades at prices ranging from $126.756 to $127.56. The price reported above reflects the weighted average price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected.

5. This transaction was executed in multiple trades at prices ranging from $127.58 to $128.30. The price reported above reflects the weighted average price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected.

6. This transaction was executed in multiple trades at prices ranging from $128.59 to $129.59. The price reported above reflects the weighted average price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected.

7. This transaction was executed in multiple trades at prices ranging from $129.62 to $130.00. The price reported above reflects the weighted average price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected.

8. The option exercises reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on June 4, 2025.

	Diana Scherer, Attorney-in-Fact	01/26/2026
	** 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).
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FAQ

What insider transaction did Glaukos (GKOS) director Marc Stapley report?

Marc Stapley reported exercising a stock option for 15,000 shares of Glaukos common stock at an exercise price of $24.69 per share on January 22, 2026, and selling a total of 15,000 shares of common stock in multiple open-market transactions the same day.

At what prices did Marc Stapley sell Glaukos (GKOS) shares in this Form 4?

The reported sales of 15,000 shares of Glaukos common stock were executed in multiple trades at weighted average prices of $126.07, $126.96, $127.92, $129.11, and $129.78 per share, each representing ranges disclosed in the footnotes.

How many Glaukos (GKOS) shares does Marc Stapley own after these transactions?

Following the reported option exercise and share sales, Marc Stapley beneficially owned 37,449 shares of Glaukos common stock directly, including 2,835 restricted stock units and certain vested units whose delivery has been deferred.

What stock option did Marc Stapley exercise in the Glaukos (GKOS) Form 4?

He exercised a stock option (right to buy) covering 15,000 shares of Glaukos common stock with an exercise price of $24.69 per share. The option had an original grant date of June 2, 2017 and an expiration date of June 2, 2026, and the Form 4 shows no remaining balance after exercise.

Were Marc Stapley’s Glaukos (GKOS) trades under a Rule 10b5-1 trading plan?

Yes. The footnotes state that both the reported sales of common stock and the option exercises were effected pursuant to a Rule 10b5-1 trading plan adopted by Marc Stapley on June 4, 2025.

What does the Form 4 say about how the Glaukos (GKOS) trade prices were calculated?

The Form 4 explains that each sale transaction was executed in multiple trades within specified price ranges and that the price reported for each line reflects the weighted average price. The reporting person undertakes to provide full trade details to the SEC staff, the issuer, or any security holder upon request.