Alex R. Thurman - 07 Aug 2026 Form 4 Insider Report for GLAUKOS Corp (GKOS)

Reporting relationship: SVP & CHIEF FINANCIAL OFFICER
Issuer ticker: GKOS
Reported as of: 07 Aug 2026
Net transaction value: -$3,602,600
SEC form: 4
Accepted by SEC: 11 Aug 2026, 17:31:34 UTC
Prior SEC filing: 21 Jul 2026
Source filing: View source filing
Reporting owner signature: /s/ Diana Scherer, Attorney-in-Fact

Key filing fact

Alex R. Thurman filed Form 4 for GLAUKOS Corp (GKOS) on 11 Aug 2026.

Key facts

This page summarizes Alex R. Thurman's Form 4 filing for GLAUKOS Corp (GKOS).
3 reported transactions and 1 derivative row are listed below.
Accepted by SEC: 11 Aug 2026, 17:31.

Change

Previous filing in this sequence was filed on 21 Jul 2026.
Current net transaction value: -$3,602,600.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001920061 Primary reporting owner

Thurman Alex R.

Relationship: SVP & CHIEF FINANCIAL OFFICER
Address: C/O GLAUKOS CORPORATION, ONE GLAUKOS WAY, ALISO VIEJO
Signature: /s/ Diana Scherer, Attorney-in-Fact
Signature date: 11 Aug 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

GKOS transaction

Common Stock

Options Exercise

Transaction value
Shares: +20,000
Change %: +46%
Price: $33.81^*
Shares after: 63,906
Date: 07 Aug 2026
Ownership: Direct
Footnotes: F1

GKOS transaction

Common Stock

Sale

Transaction value: $3,602,600
Shares: -20,000
Change %: -31%
Price: $180.13
Shares after: 43,906
Date: 07 Aug 2026
Ownership: Direct
Footnotes: F1, F2, F3

Reported derivative securities

Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.

GKOS transaction Derivative

Stock Option (Right to Buy)

Options Exercise

Transaction value
Shares: -20,000
Change %: -100%
Price: $0.000000^*
Shares after: 0
Date: 07 Aug 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 20,000
Exercise price: $33.81
Footnotes: F4, F5

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Rule 10b5-1 trading plan

These transactions were reported as open-market trades under a Rule 10b5-1 plan. The plan lets an insider set trading instructions in advance, which can reduce the risk of trading while in possession of material nonpublic information.

Original filing language: transaction made pursuant to a contract, instruction, or written plan intended to satisfy Rule 10b5-1(c).

Explanation of responses 5 footnotes

Footnote F1

Includes 5,230 restricted stock units that have not yet vested or been delivered to the Reporting Person and and 225 stock units purchased by the Reporting Person through the Issuer's Employee Stock Purchase Plan.

Footnote F2

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.

Footnote F3

This transaction was executed in multiple trades at prices ranging from $180.00 to $180.42. 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.

Footnote F4

The option exercises reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on December 15, 2025.

Footnote F5

These options vest over four years from the grant date, with 25% vesting on the first anniversary of the grant date and the remaining amount vesting in equal monthly installments over the following three years.