Tomas Navratil - 22 Sep 2025 Form 4 Insider Report for GLAUKOS Corp (GKOS)

Role
CHIEF DEVELOPMENT OFFICER
Signature
Diana Scherer, Attorney-in-Fact
Issuer symbol
GKOS
Transactions as of
22 Sep 2025
Transactions value $
-$84,446
Form type
4
Filing time
24 Sep 2025, 18:53:20 UTC
Previous filing
22 Sep 2025
Next filing
15 Dec 2025
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Navratil Tomas CHIEF DEVELOPMENT OFFICER C/O GLAUKOS CORPORATION, ONE GLAUKOS WAY, ALISO VIEJO Diana Scherer, Attorney-in-Fact 24 Sep 2025 0001920053

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction GKOS Common Stock Sale -$1.9K -23 -0.03% $82.79 76.9K 22 Sep 2025 Direct F1, F2, F3
transaction GKOS Common Stock Sale -$18.3K -218 -0.28% $83.76 76.7K 22 Sep 2025 Direct F1, F3, F4
transaction GKOS Common Stock Sale -$23.4K -276 -0.36% $84.70 76.4K 22 Sep 2025 Direct F1, F3, F5
transaction GKOS Common Stock Tax liability -$40.9K -483 -0.63% $84.69 75.9K 23 Sep 2025 Direct F6, F7
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Buy Plan / Sale Plan: These are also open market purchases/sales of shares, but in this case the transaction is part of a trading plan. Rule 10b5-1 allows insiders to setup a trading plan to buy/sell stocks over a certain period of time. Since the purchases/sales are predetermined, this protects the insiders from violating insider trading law.

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).

Explanation of Responses:

Id Content
F1 The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on June 12, 2025.
F2 This transaction was executed in multiple trades at prices ranging from $82.20 to $82.96. 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.
F3 Includes 43,509 restricted stock units that have not yet vested or been delivered to the Reporting Person.
F4 This transaction was executed in multiple trades at prices ranging from $83.22 to $84.19. 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.
F5 This transaction was executed in multiple trades at prices ranging from $84.35 to $85.11. 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.
F6 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 18, 2021.
F7 Includes 42,535 restricted stock units that have not yet vested or been delivered to the Reporting Person.