SEC Form 4 · accession 0001705850-26-000022
GLAUKOS Corp · GKOS
Statement of changes in beneficial ownership, as filed. Original on EDGAR ↗
Reporting owner
Joseph E Gilliam
Officer — PRESIDENT & COO
Period of report
Aug 11, 2026
Accepted (ET)
Aug 13, 2026 · 7:57 pm EDT
Rule 10b5-1 plan
box not checked
Issuer CIK
0001192448
Table I — non-derivative securities
| Security | Date | Code | Shares | Price | A/D | Owned after | D/I | Nature of ownership |
|---|---|---|---|---|---|---|---|---|
| Common StockF1 | Aug 11, 2026 | M | 10,000 | $48.46 | A | 82,588 | D | |
| Common StockF1 | Aug 11, 2026 | M | 20,000 | $55.18 | A | 102,588 | D | |
| Common StockF1 | Aug 11, 2026 | M | 20,000 | $55.18 | A | 122,588 | D | |
| Common StockF1 | Aug 11, 2026 | M | 10,000 | $48.46 | A | 132,588 | D | |
| Common StockF2,F1 | Aug 11, 2026 | S | 27,963 | $178.89 | D | 104,625 | D | |
| Common StockF3,F1 | Aug 11, 2026 | S | 32,037 | $180.49 | D | 72,588 | D |
Table II — derivative securities
| Security | Conv. / exercise price | Date | Code | Shares | A/D | Exercisable | Expires | Underlying | Underlying shares | Owned after | D/I |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Stock Option (Right to Buy)F4 | $55.18 | Aug 11, 2026 | M | 20,000 | D | — | Mar 24, 2032 | Common Stock | 20,000 | 51,475 | D |
| Stock Option (Right to Buy)F6,F5 | $55.18 | Aug 11, 2026 | M | 20,000 | D | — | Mar 24, 2032 | Common Stock | 20,000 | 33,118 | D |
| Stock Option (Right to Buy)F7 | $48.46 | Aug 11, 2026 | M | 10,000 | D | — | Mar 22, 2033 | Common Stock | 10,000 | 26,751 | D |
| Stock Option (Right to Buy)F8 | $48.46 | Aug 11, 2026 | M | 10,000 | D | — | Mar 22, 2033 | Common Stock | 10,000 | 26,751 | D |
Explanation of responses
- F1Includes 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.
- F2This 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.
- F3This 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.
- F4Represents 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.
- F5Represents 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.
- F6Total 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.
- F7These 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.
- F8Represents 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.