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A 10b5-1 Plan

$ Value

$0

Shares

19,601

Price

$0

Filed

Mar 27

Insider

Name

Thurman Alex R.

Title

SVP & CHIEF FINANCIAL OFFICER

CIK

0001920061

Roles

Officer

Transaction Details

Transaction Date

2025-03-25

Code

A

Table

Derivative

Ownership

Direct

Equity Swap

No

Shares After

19,601

Footnotes

The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on December 15, 2025. | Includes 5,230 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 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 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 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 2026 and 50% will vest and be delivered in December 2026. | Includes 8,533 restricted stock units that have not yet vested or been delivered to the Reporting Person. | 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, 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 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. | 50% of the portion of the option reported herein will vest and become exercisable in March 2026. 50% of the portion of the option reported herein will vest and become exercisable in December 2026. | Represents a portion of an option to purchase shares of common stock 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 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. | This option was granted on March 25, 2026 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.

Filing Info

Accession No.

0001920061-26-000006

Form Type

4

Issuer CIK

0001192448

Thurman Alex R.'s History

Date Ticker Type Value
2026-04-02 GKOS F $174K
2026-03-25 GKOS $267K
2026-03-25 GKOS A $0
2026-03-25 GKOS A $0
2026-03-25 GKOS A $0
2026-03-24 GKOS $160K
2026-03-24 GKOS F $213K
2026-03-23 GKOS F $131K
2025-12-11 GKOS A $0
2025-11-25 GKOS $33K

Other Insiders at GKOS (90d)

Insider Bought Sold Last
Stapley Marc $1.9M 2026-01-22
Burns Thomas William
CHAIRMAN & CEO
2026-04-02
Gilliam Joseph E
PRESIDENT & COO
$1.3M 2026-04-02
Navratil Tomas
CHIEF DEVELOPMENT OFFICER
$246K 2026-04-10
Thurman Alex R.
SVP & CHIEF FINANCIAL OFFICER
$427K 2026-04-02