GLAUKOS (GKOS) CDO Tomas Navratil earns performance RSU stock awards

Rhea-AI Filing Summary

GLAUKOS Corp chief development officer Tomas Navratil reported several stock awards of common shares on March 25, 2026. The Form 4 shows multiple acquisitions coded as grants, with no purchase price, tied to previously granted restricted stock unit (RSU) awards.

These shares were earned after the board’s Compensation, Nominating and Governance Committee determined that specified multi-year operational performance targets from 2022, 2023, and 2024 RSU grants had been achieved. Following the latest grant entry, Navratil directly holds 101,238 common shares, and the footnotes state he also holds additional unvested RSUs, including 57,486 units that have not yet vested or been delivered.

Insider Trade Summary

4 transactions reported

Mixed 4 txns

Insider Navratil Tomas

Role CHIEF DEVELOPMENT OFFICER

Type	Security	Shares	Price	Value
Grant/Award	Common Stock	4,622	$0.00	--
Grant/Award	Common Stock	11,693	$0.00	--
Grant/Award	Common Stock	3,692	$0.00	--
Grant/Award	Common Stock	12,774	$0.00	--

Holdings After Transaction: Common Stock — 73,079 shares (Direct)

Footnotes (1)

1. 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 on March 25, 2026 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. Includes 29,327 restricted stock units that have not yet vested or been delivered to the Reporting Person. Represents shares of common stock underlying a portion of an award of restricted stock units previously granted by the Issuer on March 22, 2023, 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 on March 25, 2026 that one of the operational targets had been achieved. The Reporting Person elected to receive this performance grant in the form of restricted stock units. 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. 100% of the number of shares of common stock reported herein will vest and be delivered in March 2026. Includes 41,020 restricted stock units that have not yet vested or been delivered to the Reporting Person. Represents shares of common stock underlying a portion of an award of restricted stock units previously granted by the Issuer on March 14, 2024, 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 on March 25, 2026 that one of the operational targets had been achieved. The Reporting Person elected to receive this performance grant in the form of restricted stock units. 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. 100% of the number of shares of common stock reported herein will vest and be delivered in March 2026. Includes 44,712 restricted stock units that have not yet vested or been delivered to the Reporting Person. 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 Includes 57,486 restricted stock units that have not yet vested or been delivered to the Reporting Person.

Form 4 Insider Transactions: What Each Field Means →

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).

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^*

Navratil Tomas

(Last) (First) (Middle)

C/O GLAUKOS CORPORATION

ONE GLAUKOS WAY

(Street)

ALISO VIEJO CALIFORNIA 92656

(City) (State) (Zip)

UNITED STATES

(Country)

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)
	CHIEF DEVELOPMENT OFFICER

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
03/25/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

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	03/25/2026		A		4,622(1)	A	$0	73,079(2)	D
Common Stock	03/25/2026		A		11,693(3)	A	$0	84,772(4)	D
Common Stock	03/25/2026		A		3,692(5)	A	$0	88,464(6)	D
Common Stock	03/25/2026		A		12,774(7)	A	$0	101,238(8)	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

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 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 on March 25, 2026 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.

2. Includes 29,327 restricted stock units that have not yet vested or been delivered to the Reporting Person.

3. Represents shares of common stock underlying a portion of an award of restricted stock units previously granted by the Issuer on March 22, 2023, 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 on March 25, 2026 that one of the operational targets had been achieved. The Reporting Person elected to receive this performance grant in the form of restricted stock units. 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. 100% of the number of shares of common stock reported herein will vest and be delivered in March 2026.

4. Includes 41,020 restricted stock units that have not yet vested or been delivered to the Reporting Person.

5. Represents shares of common stock underlying a portion of an award of restricted stock units previously granted by the Issuer on March 14, 2024, 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 on March 25, 2026 that one of the operational targets had been achieved. The Reporting Person elected to receive this performance grant in the form of restricted stock units. 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. 100% of the number of shares of common stock reported herein will vest and be delivered in March 2026.

6. Includes 44,712 restricted stock units that have not yet vested or been delivered to the Reporting Person.

7. 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

8. Includes 57,486 restricted stock units that have not yet vested or been delivered to the Reporting Person.

	Diana Scherer, Attorney-in-Fact	03/27/2026
	** 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).
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.
* Form 4: SEC 1474 (03-26)

FAQ

What did GLAUKOS (GKOS) executive Tomas Navratil report in this Form 4?

Tomas Navratil reported multiple acquisitions of GLAUKOS common stock as compensation-related grants. The shares reflect portions of earlier restricted stock unit awards that became earned after specific multi-year operational performance targets were determined to have been achieved.

Were Navratil’s GLAUKOS (GKOS) transactions open-market buys or compensation grants?

The transactions were compensation grants, not open-market purchases. Each entry is coded “A” for grant or award, with a transaction price of $0.00 per share, indicating stock received as part of restricted stock unit awards rather than shares bought in the market.

How many GLAUKOS (GKOS) shares does Tomas Navratil hold after these grants?

After the latest recorded grant, Tomas Navratil directly holds 101,238 GLAUKOS common shares. This figure comes from the final transaction’s “total shares following transaction” value, which reflects his updated direct common stock ownership position following these RSU-related awards.

What performance conditions triggered Navratil’s GLAUKOS (GKOS) stock awards?

The awards were triggered when the board’s Compensation, Nominating and Governance Committee determined that certain pre-determined operational targets over multi-year performance periods had been achieved. These targets were tied to RSU grants originally awarded in March 2022, March 2023, and March 2024.

Does Tomas Navratil still hold unvested GLAUKOS (GKOS) restricted stock units?

Yes. Footnotes state that he continues to hold unvested restricted stock units. One footnote notes 57,486 RSUs that have not yet vested or been delivered, in addition to other RSU balances referenced for earlier performance-based awards reported in the filing.

When will the newly earned GLAUKOS (GKOS) RSU shares vest for Navratil?

For one performance-based RSU award, 50% of the earned shares will vest and be delivered in March 2026 and the remaining 50% in December 2026. Other performance grants reported will vest and be delivered 100% in March 2026, according to the footnotes.