Updated Jul 16, 2026 · Last SEC filing 2026-07-14
GLAUKOS Corp (GKOS) has filed 27 SEC Form 4 insider transactions in the last 90 days, with the most recent on 2026-07-14. 3 Form 8-K material event filings were reported by GKOS in the last 90 days. 9 Form 144 notices of proposed sale were filed for GKOS stock. InsiderAlpha tracks every GKOS SEC filing — Form 4, Form 144, and 8-K — in real time, including Rule 10b5-1 plan detection.
| SEC CIK | 0001192448 |
|---|
| Form 4 filings (90d) | 27 |
|---|---|
| Form 8-K filings (90d) | 3 |
| Form 144 notices (90d) | 9 |
| Latest Form 4 filing | 2026-07-14 |
| Date | Insider | Role | Transaction | Shares | Price | Value | Filing |
|---|---|---|---|---|---|---|---|
| Thurman Alex R. | SVP & CHIEF FINANCIAL OFFICER | S — Open-market sale [10b5-1] | 10.0K | $155.00 | $1.55M | SEC | |
| Thurman Alex R. | SVP & CHIEF FINANCIAL OFFICER | M — Option exercise [10b5-1] | 10.0K | $38.68 | $387K | SEC | |
| Thurman Alex R. | SVP & CHIEF FINANCIAL OFFICER | M — Option exercise | 10.0K | $38.68 | $387K | SEC | |
| Thurman Alex R. | SVP & CHIEF FINANCIAL OFFICER | S — Open-market sale | 10.0K | $150.00 | $1.50M | SEC | |
| Navratil Tomas | CHIEF DEVELOPMENT OFFICER | S — Open-market sale | 716 | $139.06 | $100K | SEC | |
| Burns Thomas William | CHAIRMAN & CEO | F — Tax withholding / forfeiture | 4.1K | $142.57 | $579K | SEC | |
| Navratil Tomas | CHIEF DEVELOPMENT OFFICER | F — Tax withholding / forfeiture | 483 | $142.57 | $69K | SEC | |
| Gilliam Joseph E | PRESIDENT & COO | F — Tax withholding / forfeiture | 1.1K | $142.57 | $151K | SEC | |
| Navratil Tomas | CHIEF DEVELOPMENT OFFICER | S — Open-market sale | 1.5K | $130.68 | $201K | SEC | |
| WEN LEANA | Insider | A — Grant or award | 1.9K | $0.00 | — | SEC | |
| Foley Mark J | Insider | A — Grant or award | 1.9K | $0.00 | — | SEC | |
| WEISNER AIMEE S | Insider | A — Grant or award | 1.9K | $0.00 | — | SEC | |
| Kliman Gilbert H | Insider | A — Grant or award | 1.9K | $0.00 | — | SEC | |
| Stapley Marc | Insider | A — Grant or award | 1.9K | $0.00 | — | SEC | |
| Torres Denice | Insider | A — Grant or award | 1.9K | $0.00 | — | SEC |
All transactions sourced from SEC EDGAR Form 4 filings for GLAUKOS Corp (GKOS). Updated in real time as new filings are submitted to the SEC.
| Insider | Form 4 filings | Total transaction value |
|---|---|---|
| Kliman Gilbert H | 9 | $1.87M |
| Thurman Alex R. | 9 | $6.38M |
| Hoffmeister David F | 5 | $741K |
| WEN LEANA | 4 | $244K |
| Stapley Marc | 3 | — |
Form 144 must be filed before insiders sell restricted or control stock above SEC thresholds. A cluster of Form 144 notices often precedes a wave of insider distribution.
SEC Form 4 transactions are reported with a one-letter code indicating the type of transaction. Common codes you'll see in GKOS insider filings:
| P | Open-market purchase by the insider |
|---|---|
| S | Open-market sale by the insider |
| A | Grant, award, or other acquisition from the issuer |
| M | Exercise or conversion of derivative security (e.g. options) |
| F | Payment of exercise price or tax liability via share withholding |
| G | Bona-fide gift of securities |
| D | Disposition to the issuer (e.g. share buyback participation) |
| J | Other acquisition or disposition |
| X | Exercise of in-the-money or at-the-money derivative security |
| C | Conversion of derivative security |
| V | Transaction voluntarily reported earlier than required |
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