Key facts
- This page summarizes Joseph E. Gilliam's Form 4 filing for GLAUKOS Corp (GKOS).
- 10 reported transactions and 4 derivative rows are listed below.
- Accepted by SEC: 13 Aug 2026, 19:57.
Joseph E. Gilliam - 11 Aug 2026 Form 4 Insider Report for GLAUKOS Corp (GKOS)
- Reporting relationship
- PRESIDENT & COO
- Issuer ticker
- GKOS
- Reported as of
- 11 Aug 2026
- Net transaction value
- -$10,784,659
- SEC form
- 4
- Accepted by SEC
- 13 Aug 2026, 19:57:00 UTC
- Prior SEC filing
- 29 Jun 2026
- Next SEC filing
- 14 Aug 2026
- Source filing
- View source filing
- Reporting owner signature
- /s/ Diana Scherer, Attorney-in-Fact
Source evidence
Original filing metadata and source links for verification.
5 source fields
Reporting owner
1 detail
Key filing fact
Joseph E. Gilliam filed Form 4 for GLAUKOS Corp (GKOS) on 13 Aug 2026.
Change
- Previous filing in this sequence was filed on 29 Jun 2026.
- Current net transaction value: -$10,784,659.
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
View source filing
Ownership activity is grounded in SEC Form 4 disclosures.
Reporting Owners (1)
CIK 0001705850
Primary reporting owner
Gilliam Joseph E
- Relationship
- PRESIDENT & COO
- Address
- C/O GLAUKOS CORPORATION, ONE GLAUKOS WAY, ALISO VIEJO
- Signature
- /s/ Diana Scherer, Attorney-in-Fact
- Signature date
- 13 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
- +10,000
- Change %
- +14%
- Price
- $48.46*
- Shares after
- 82,588
- Date
- 11 Aug 2026
- Ownership
- Direct
- Footnotes
- F1
GKOS
transaction
Common Stock
Options Exercise
- Transaction value
- Shares
- +20,000
- Change %
- +24%
- Price
- $55.18*
- Shares after
- 102,588
- Date
- 11 Aug 2026
- Ownership
- Direct
- Footnotes
- F1
GKOS
transaction
Common Stock
Options Exercise
- Transaction value
- Shares
- +20,000
- Change %
- +19%
- Price
- $55.18*
- Shares after
- 122,588
- Date
- 11 Aug 2026
- Ownership
- Direct
- Footnotes
- F1
GKOS
transaction
Common Stock
Options Exercise
- Transaction value
- Shares
- +10,000
- Change %
- +8.2%
- Price
- $48.46*
- Shares after
- 132,588
- Date
- 11 Aug 2026
- Ownership
- Direct
- Footnotes
- F1
GKOS
transaction
Common Stock
Sale
- Transaction value
- $5,002,301
- Shares
- -27,963
- Change %
- -21%
- Price
- $178.89
- Shares after
- 104,625
- Date
- 11 Aug 2026
- Ownership
- Direct
- Footnotes
- F1, F2
GKOS
transaction
Common Stock
Sale
- Transaction value
- $5,782,358
- Shares
- -32,037
- Change %
- -31%
- Price
- $180.49
- Shares after
- 72,588
- Date
- 11 Aug 2026
- Ownership
- Direct
- Footnotes
- F1, 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 %
- -28%
- Price
- $0.000000*
- Shares after
- 51,475
- Date
- 11 Aug 2026
- Ownership
- Direct
- Underlying class
- Common Stock
- Underlying amount
- 20,000
- Exercise price
- $55.18
- Footnotes
- F4
GKOS
transaction
Derivative
Stock Option (Right to Buy)
Options Exercise
- Transaction value
- Shares
- -20,000
- Change %
- -38%
- Price
- $0.000000*
- Shares after
- 33,118
- Date
- 11 Aug 2026
- Ownership
- Direct
- Underlying class
- Common Stock
- Underlying amount
- 20,000
- Exercise price
- $55.18
- Footnotes
- F5, F6
GKOS
transaction
Derivative
Stock Option (Right to Buy)
Options Exercise
- Transaction value
- Shares
- -10,000
- Change %
- -27%
- Price
- $0.000000*
- Shares after
- 26,751
- Date
- 11 Aug 2026
- Ownership
- Direct
- Underlying class
- Common Stock
- Underlying amount
- 10,000
- Exercise price
- $48.46
- Footnotes
- F7
GKOS
transaction
Derivative
Stock Option (Right to Buy)
Options Exercise
- Transaction value
- Shares
- -10,000
- Change %
- -27%
- Price
- $0.000000*
- Shares after
- 26,751
- Date
- 11 Aug 2026
- Ownership
- Direct
- Underlying class
- Common Stock
- Underlying amount
- 10,000
- Exercise price
- $48.46
- Footnotes
- F8
* marks a reported price that did not pass the local price check.
Additional SEC filing notes
Filing notes and footnotes
Explanation of responses 8 footnotes
Footnote F1
Includes 41,983 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
This transaction was executed in multiple trades at prices ranging from $178.60 to $179.58). 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
This transaction was executed in multiple trades at prices ranging from $179.68 to $180.60). 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
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.
Footnote F5
Represents a portion of an option to purchase shares of common stock previously granted by the Issuer to the Reporting Person on March 24, 2022 in connection with his promotion to President and Chief Operating Officer, the vesting of which was subject to the Issuer's achievement of certain multi-year performance goals.
Footnote F6
Total amount reported has been adjusted to correct a typographical error made in a Form 4 report filed by the Reporting Person on March 17, 2025, in which 13,721 stock options earned were erroneously reported as 13,271 stock options.
Footnote F7
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.
Footnote F8
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.