GLAUKOS Corp (GKOS) has 20 SEC Form 4 insider filings on record in the last 90 days. No insider purchases were filed — 4 sales totalling $2.9M. Most recent filing: Sept. 18, 2026.
| Date | Insider | Value | Shares | Stake | Pre-planned | Links |
|---|---|---|---|---|---|---|
| Sept. 18, 2026 filed Sept. 16, 2026 | Navratil Tomas CHIEF DEVELOPMENT OFFICER | −$243,204 | 1,457 | −2% | Yes | |
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| Sept. 1, 2026 filed Aug. 28, 2026 | Navratil Tomas CHIEF DEVELOPMENT OFFICER | −$2,483,104 | 13,744 | −16% | No | |
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| Aug. 20, 2026 filed Aug. 19, 2026 | Kliman Gilbert H Director | $410,575 | 7,500 | 0% | No | |
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| Aug. 13, 2026 filed Aug. 11, 2026 | Gilliam Joseph E PRESIDENT & COO | $7,473,859 | 180,000 | 0% | No | |
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| Aug. 11, 2026 filed Aug. 7, 2026 | Thurman Alex R. SVP & CHIEF FINANCIAL OFFICER | $2,926,400 | 60,000 | — | Yes | |
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Showing the 5 most recent of 20 filings in the last 90 days.
Form 4 is the filing company officers, directors and 10% shareholders must submit to the SEC within two business days of trading their own company's stock. Open-market purchases generally carry more signal than sales, which are often scheduled in advance. More on how this works.
Real-time Telegram alerts the moment a Form 4 is filed. Filings shown here are delayed by 72 hours.
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