Tomas Navratil - 16 Sep 2026 Form 4 Insider Report for GLAUKOS Corp (GKOS)

Reporting relationship: CHIEF DEVELOPMENT OFFICER
Issuer ticker: GKOS
Reported as of: 16 Sep 2026
Net transaction value: -$243,204
SEC form: 4
Accepted by SEC: 18 Sep 2026, 17:32:29 UTC
Prior SEC filing: 01 Sep 2026
Source filing: View source filing
Reporting owner signature: Diana Scherer, Attorney-in-Fact

Key filing fact

Tomas Navratil filed Form 4 for GLAUKOS Corp (GKOS) on 18 Sep 2026.

Key facts

This page summarizes Tomas Navratil's Form 4 filing for GLAUKOS Corp (GKOS).
7 reported transactions and 0 derivative rows are listed below.
Accepted by SEC: 18 Sep 2026, 17:32.

Change

Previous filing in this sequence was filed on 01 Sep 2026.
Current net transaction value: -$243,204.

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 0001920053 Primary reporting owner

Navratil Tomas

Relationship: CHIEF DEVELOPMENT OFFICER
Address: C/O GLAUKOS CORPORATION, ONE GLAUKOS WAY, ALISO VIEJO
Signature: Diana Scherer, Attorney-in-Fact
Signature date: 18 Sep 2026

Reported non-derivative transactions

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

GKOS transaction

Common Stock

Sale

Transaction value: $16,810
Shares: -103
Change %: -0.14%
Price: $163.20
Shares after: 73,787
Date: 16 Sep 2026
Ownership: Direct
Footnotes: F1, F2, F3

GKOS transaction

Common Stock

Sale

Transaction value: $56,787
Shares: -345
Change %: -0.47%
Price: $164.60
Shares after: 73,442
Date: 16 Sep 2026
Ownership: Direct
Footnotes: F1, F3, F4

GKOS transaction

Common Stock

Sale

Transaction value: $31,744
Shares: -191
Change %: -0.26%
Price: $166.20
Shares after: 73,251
Date: 16 Sep 2026
Ownership: Direct
Footnotes: F1, F3, F5

GKOS transaction

Common Stock

Sale

Transaction value: $76,967
Shares: -460
Change %: -0.63%
Price: $167.32
Shares after: 72,791
Date: 16 Sep 2026
Ownership: Direct
Footnotes: F1, F3, F6

GKOS transaction

Common Stock

Sale

Transaction value: $20,206
Shares: -120
Change %: -0.16%
Price: $168.38
Shares after: 72,671
Date: 16 Sep 2026
Ownership: Direct
Footnotes: F1, F3, F7

GKOS transaction

Common Stock

Sale

Transaction value: $40,002
Shares: -234
Change %: -0.32%
Price: $170.95
Shares after: 72,437
Date: 16 Sep 2026
Ownership: Direct
Footnotes: F1, F3, F8

GKOS transaction

Common Stock

Sale

Transaction value: $688
Shares: -4
Change %: -0.01%
Price: $172.00
Shares after: 72,433
Date: 16 Sep 2026
Ownership: Direct
Footnotes: F1, F3, F9

^* 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 9 footnotes

Footnote 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, 2026.

Footnote F2

This transaction was executed in multiple trades at prices ranging from $162.87 to $163.47. 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 F3

Includes 38,817 restricted stock units that have not yet vested or been delivered to the Reporting Person.

Footnote F4

This transaction was executed in multiple trades at prices ranging from $164.40 to $165.26. 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 F5

This transaction was executed in multiple trades at prices ranging from $165.55 to $166.22. 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 F6

This transaction was executed in multiple trades at prices ranging from $167.04 to $167.57. 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 F7

This transaction was executed in multiple trades at prices ranging from $168.37 to $168.38. 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 F8

This transaction was executed in multiple trades at prices ranging from $170.76 to $171.10. 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 F9

This transaction was executed in multiple trades at prices ranging from $172.00 to $172.01. 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.