Marc Stapley - 22 Jan 2026 Form 4 Insider Report for GLAUKOS Corp (GKOS)

Role
Director
Signature
Diana Scherer, Attorney-in-Fact
Issuer symbol
GKOS
Transactions as of
22 Jan 2026
Net transactions value
-$1,545,226
Form type
4
Filing time
26 Jan 2026, 21:21:27 UTC
Previous filing
07 Jan 2026
Next filing
02 Mar 2026
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Stapley Marc Director C/O GLAUKOS CORPORATION, ONE GLAUKOS WAY, ALISO VIEJO Diana Scherer, Attorney-in-Fact 26 Jan 2026 0001539796

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction GKOS Common Stock Options Exercise $370,350 +15,000 +40% $24.69 52,449 22 Jan 2026 Direct F1
transaction GKOS Common Stock Sale $480,579 -3,812 -7.3% $126.07 48,637 22 Jan 2026 Direct F1, F2, F3
transaction GKOS Common Stock Sale $494,128 -3,892 -8% $126.96 44,745 22 Jan 2026 Direct F1, F2, F4
transaction GKOS Common Stock Sale $213,754 -1,671 -3.7% $127.92 43,074 22 Jan 2026 Direct F1, F2, F5
transaction GKOS Common Stock Sale $558,401 -4,325 -10% $129.11 38,749 22 Jan 2026 Direct F1, F2, F6
transaction GKOS Common Stock Sale $168,714 -1,300 -3.4% $129.78 37,449 22 Jan 2026 Direct F1, F2, F7

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) Options Exercise $0 -15,000 -100% $0.000000 0 22 Jan 2026 Common Stock 15,000 $24.69 Direct F8
* 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 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.
F2 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.
F3 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.
F4 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.
F5 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.
F6 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.
F7 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.
F8 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.