GKOS: Navratil Tomas discloses a sale

By AlphaYouPublished Sep 18, 2026Form 4

Stocks in this disclosure

Reported activity

Navratil Tomas

Reporting filer

Navratil Tomas reported Sale in GLAUKOS Corp: 103 units of Common Stock, dated 2026-09-16. The full Form 4 contains 7 transaction entries.

Disclosed: Sep 18, 2026

Reported details

7 entries

All validated entries in this disclosure
Security	Owner	Date	Code	Action	Quantity	Price	Following holdings	Reporting delay	Filed terms and references
Common Stock	Navratil Tomas	2026-09-16	S	Sale	103	163.2	73,787	2 days	Filed terms security Title: Common Stock transaction Date: 2026-09-16 transaction Form Type: 4 transaction Code: S equity Swap Involved: false id: F1 transaction Shares: 103 transaction Price Per Share: 163.2 id: F2 transaction Acquired Disposed Code: D shares Owned Following Transaction: 73787 id: F3 direct Or Indirect Ownership: D
Common Stock	Navratil Tomas	2026-09-16	S	Sale	345	164.6	73,442	2 days	Filed terms security Title: Common Stock transaction Date: 2026-09-16 transaction Form Type: 4 transaction Code: S equity Swap Involved: false id: F1 transaction Shares: 345 transaction Price Per Share: 164.6 id: F4 transaction Acquired Disposed Code: D shares Owned Following Transaction: 73442 id: F3 direct Or Indirect Ownership: D
Common Stock	Navratil Tomas	2026-09-16	S	Sale	191	166.2	73,251	2 days	Filed terms security Title: Common Stock transaction Date: 2026-09-16 transaction Form Type: 4 transaction Code: S equity Swap Involved: false id: F1 transaction Shares: 191 transaction Price Per Share: 166.2 id: F5 transaction Acquired Disposed Code: D shares Owned Following Transaction: 73251 id: F3 direct Or Indirect Ownership: D
Common Stock	Navratil Tomas	2026-09-16	S	Sale	460	167.32	72,791	2 days	Filed terms security Title: Common Stock transaction Date: 2026-09-16 transaction Form Type: 4 transaction Code: S equity Swap Involved: false id: F1 transaction Shares: 460 transaction Price Per Share: 167.32 id: F6 transaction Acquired Disposed Code: D shares Owned Following Transaction: 72791 id: F3 direct Or Indirect Ownership: D
Common Stock	Navratil Tomas	2026-09-16	S	Sale	120	168.38	72,671	2 days	Filed terms security Title: Common Stock transaction Date: 2026-09-16 transaction Form Type: 4 transaction Code: S equity Swap Involved: false id: F1 transaction Shares: 120 transaction Price Per Share: 168.38 id: F7 transaction Acquired Disposed Code: D shares Owned Following Transaction: 72671 id: F3 direct Or Indirect Ownership: D
Common Stock	Navratil Tomas	2026-09-16	S	Sale	234	170.95	72,437	2 days	Filed terms security Title: Common Stock transaction Date: 2026-09-16 transaction Form Type: 4 transaction Code: S equity Swap Involved: false id: F1 transaction Shares: 234 transaction Price Per Share: 170.95 id: F8 transaction Acquired Disposed Code: D shares Owned Following Transaction: 72437 id: F3 direct Or Indirect Ownership: D
Common Stock	Navratil Tomas	2026-09-16	S	Sale	4	172	72,433	2 days	Filed terms security Title: Common Stock transaction Date: 2026-09-16 transaction Form Type: 4 transaction Code: S equity Swap Involved: false id: F1 transaction Shares: 4 transaction Price Per Share: 172 id: F9 transaction Acquired Disposed Code: D shares Owned Following Transaction: 72433 id: F3 direct Or Indirect Ownership: D

Common Stock

Owner: Navratil Tomas
Date: 2026-09-16
Code: S
Action: Sale
Quantity: 103
Price: 163.2
Following holdings: 73,787
Reporting delay: 2 days
Filed terms and references: Filed terms
security Title: Common Stock
transaction Date: 2026-09-16
transaction Form Type: 4
transaction Code: S
equity Swap Involved: false
id: F1
transaction Shares: 103
transaction Price Per Share: 163.2
id: F2
transaction Acquired Disposed Code: D
shares Owned Following Transaction: 73787
id: F3
direct Or Indirect Ownership: D

Common Stock

Owner: Navratil Tomas
Date: 2026-09-16
Code: S
Action: Sale
Quantity: 345
Price: 164.6
Following holdings: 73,442
Reporting delay: 2 days
Filed terms and references: Filed terms
security Title: Common Stock
transaction Date: 2026-09-16
transaction Form Type: 4
transaction Code: S
equity Swap Involved: false
id: F1
transaction Shares: 345
transaction Price Per Share: 164.6
id: F4
transaction Acquired Disposed Code: D
shares Owned Following Transaction: 73442
id: F3
direct Or Indirect Ownership: D

Common Stock

Owner: Navratil Tomas
Date: 2026-09-16
Code: S
Action: Sale
Quantity: 191
Price: 166.2
Following holdings: 73,251
Reporting delay: 2 days
Filed terms and references: Filed terms
security Title: Common Stock
transaction Date: 2026-09-16
transaction Form Type: 4
transaction Code: S
equity Swap Involved: false
id: F1
transaction Shares: 191
transaction Price Per Share: 166.2
id: F5
transaction Acquired Disposed Code: D
shares Owned Following Transaction: 73251
id: F3
direct Or Indirect Ownership: D

Common Stock

Owner: Navratil Tomas
Date: 2026-09-16
Code: S
Action: Sale
Quantity: 460
Price: 167.32
Following holdings: 72,791
Reporting delay: 2 days
Filed terms and references: Filed terms
security Title: Common Stock
transaction Date: 2026-09-16
transaction Form Type: 4
transaction Code: S
equity Swap Involved: false
id: F1
transaction Shares: 460
transaction Price Per Share: 167.32
id: F6
transaction Acquired Disposed Code: D
shares Owned Following Transaction: 72791
id: F3
direct Or Indirect Ownership: D

Common Stock

Owner: Navratil Tomas
Date: 2026-09-16
Code: S
Action: Sale
Quantity: 120
Price: 168.38
Following holdings: 72,671
Reporting delay: 2 days
Filed terms and references: Filed terms
security Title: Common Stock
transaction Date: 2026-09-16
transaction Form Type: 4
transaction Code: S
equity Swap Involved: false
id: F1
transaction Shares: 120
transaction Price Per Share: 168.38
id: F7
transaction Acquired Disposed Code: D
shares Owned Following Transaction: 72671
id: F3
direct Or Indirect Ownership: D

Common Stock

Owner: Navratil Tomas
Date: 2026-09-16
Code: S
Action: Sale
Quantity: 234
Price: 170.95
Following holdings: 72,437
Reporting delay: 2 days
Filed terms and references: Filed terms
security Title: Common Stock
transaction Date: 2026-09-16
transaction Form Type: 4
transaction Code: S
equity Swap Involved: false
id: F1
transaction Shares: 234
transaction Price Per Share: 170.95
id: F8
transaction Acquired Disposed Code: D
shares Owned Following Transaction: 72437
id: F3
direct Or Indirect Ownership: D

Common Stock

Owner: Navratil Tomas
Date: 2026-09-16
Code: S
Action: Sale
Quantity: 4
Price: 172
Following holdings: 72,433
Reporting delay: 2 days
Filed terms and references: Filed terms
security Title: Common Stock
transaction Date: 2026-09-16
transaction Form Type: 4
transaction Code: S
equity Swap Involved: false
id: F1
transaction Shares: 4
transaction Price Per Share: 172
id: F9
transaction Acquired Disposed Code: D
shares Owned Following Transaction: 72433
id: F3
direct Or Indirect Ownership: D

Purchases, sales, grants and option exercises are different transactions. The reported code identifies the action; it does not establish a motive.

Filing context

Quantities and prices are shown in the units filed. No trade value is inferred from their product.
Navratil Tomas: CHIEF DEVELOPMENT OFFICER.
The filing reports a Rule 10b5-1 trading plan.
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.
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.
F3: Includes 38,817 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 $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.
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.
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.
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.
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.
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.

Original sources

SEC ownership filing

Prepared automatically from public filing data. Report a correction.

Security

Owner

Date

Code

Action

Quantity

Price

Following holdings

Reporting delay

Filed terms and references

Common Stock

Navratil Tomas

2026-09-16

Sale

103

163.2

73,787

2 days

Filed terms

security Title: Common Stock
transaction Date: 2026-09-16
transaction Form Type: 4
transaction Code: S
equity Swap Involved: false
id: F1
transaction Shares: 103
transaction Price Per Share: 163.2
id: F2
transaction Acquired Disposed Code: D
shares Owned Following Transaction: 73787
id: F3
direct Or Indirect Ownership: D

Common Stock

Navratil Tomas

2026-09-16

Sale

345

164.6

73,442

2 days

Filed terms

security Title: Common Stock
transaction Date: 2026-09-16
transaction Form Type: 4
transaction Code: S
equity Swap Involved: false
id: F1
transaction Shares: 345
transaction Price Per Share: 164.6
id: F4
transaction Acquired Disposed Code: D
shares Owned Following Transaction: 73442
id: F3
direct Or Indirect Ownership: D

Common Stock

Navratil Tomas

2026-09-16

Sale

191

166.2

73,251

2 days

Filed terms

security Title: Common Stock
transaction Date: 2026-09-16
transaction Form Type: 4
transaction Code: S
equity Swap Involved: false
id: F1
transaction Shares: 191
transaction Price Per Share: 166.2
id: F5
transaction Acquired Disposed Code: D
shares Owned Following Transaction: 73251
id: F3
direct Or Indirect Ownership: D

Common Stock

Navratil Tomas

2026-09-16

Sale

460

167.32

72,791

2 days

Filed terms

security Title: Common Stock
transaction Date: 2026-09-16
transaction Form Type: 4
transaction Code: S
equity Swap Involved: false
id: F1
transaction Shares: 460
transaction Price Per Share: 167.32
id: F6
transaction Acquired Disposed Code: D
shares Owned Following Transaction: 72791
id: F3
direct Or Indirect Ownership: D

Common Stock

Navratil Tomas

2026-09-16

Sale

120

168.38

72,671

2 days

Filed terms

security Title: Common Stock
transaction Date: 2026-09-16
transaction Form Type: 4
transaction Code: S
equity Swap Involved: false
id: F1
transaction Shares: 120
transaction Price Per Share: 168.38
id: F7
transaction Acquired Disposed Code: D
shares Owned Following Transaction: 72671
id: F3
direct Or Indirect Ownership: D

Common Stock

Navratil Tomas

2026-09-16

Sale

234

170.95

72,437

2 days

Filed terms

security Title: Common Stock
transaction Date: 2026-09-16
transaction Form Type: 4
transaction Code: S
equity Swap Involved: false
id: F1
transaction Shares: 234
transaction Price Per Share: 170.95
id: F8
transaction Acquired Disposed Code: D
shares Owned Following Transaction: 72437
id: F3
direct Or Indirect Ownership: D

Common Stock

Navratil Tomas

2026-09-16

Sale

172

72,433

2 days

Filed terms

security Title: Common Stock
transaction Date: 2026-09-16
transaction Form Type: 4
transaction Code: S
equity Swap Involved: false
id: F1
transaction Shares: 4
transaction Price Per Share: 172
id: F9
transaction Acquired Disposed Code: D
shares Owned Following Transaction: 72433
id: F3
direct Or Indirect Ownership: D

Filing context

Quantities and prices are shown in the units filed. No trade value is inferred from their product.

Navratil Tomas: CHIEF DEVELOPMENT OFFICER.

The filing reports a Rule 10b5-1 trading plan.

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.

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.

F3: Includes 38,817 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 $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.

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.

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.

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.

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.

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.