Tomas Navratil sold $243k of GKOS
CHIEF DEVELOPMENT OFFICER at GLAUKOS Corp. 1,457 shares at an average of $166.92, traded Sep 16, 2026, filed Sep 18, 2026.
Score components
- +15RoleOfficer
- +13Trade size$243k at market
- 0Share of holdings soldSold 2.0% of holdings
- 0ClusterNo other insider selling within 14 days
- -2010b5-1 planPre-scheduled under a 10b5-1 plan
What happened after comparable sells
Same side and tier, against the S&P 500, at 1, 3 and 6 months. Shown to Pro users; the whole table is on the backtest page.
Price around the trade, and since
From a quarter before the trade to today. The arrow is the trade, the circle the day the filing reached EDGAR, which is the first day anyone outside could act; the dotted line is the S&P 500 rebased to that day's close.
Daily candles, adjusted for splits and dividends. Green arrows are insider buys, red are sells, sized by value; the dashed line is the close on the filing day, the dotted line SPY rebased to it.Charts by TradingView Lightweight Charts™
Rows in this filing
Every transaction in Form 4 0001920053-26-000028, as filed. Open on EDGAR
| Date | Transaction | Shares | Price | Value | Holdings after | Filed |
|---|---|---|---|---|---|---|
| Sep 16, 2026 | SOpen-market sale Common Stock10b5-1 | -103 | $163.20 | $17k | 73,787 | 24 d ago |
| Sep 16, 2026 | SOpen-market sale Common Stock10b5-1 | -345 | $164.60 | $57k | 73,442 | 24 d ago |
| Sep 16, 2026 | SOpen-market sale Common Stock10b5-1 | -191 | $166.20 | $32k | 73,251 | 24 d ago |
| Sep 16, 2026 | SOpen-market sale Common Stock10b5-1 | -460 | $167.32 | $77k | 72,791 | 24 d ago |
| Sep 16, 2026 | SOpen-market sale Common Stock10b5-1 | -120 | $168.38 | $20k | 72,671 | 24 d ago |
| Sep 16, 2026 | SOpen-market sale Common Stock10b5-1 | -234 | $170.95 | $40k | 72,437 | 24 d ago |
| Sep 16, 2026 | SOpen-market sale Common Stock10b5-1 | -4 | $172.00 | $688 | 72,433 | 24 d ago |
Related signals
Other insiders at GLAUKOS Corp and this insider’s other filings.
| Score | Company | Insider | Value | Holdings | Filed |
|---|---|---|---|---|---|
| 8Weak | GLAUKOS Corp | Tomas Navratil CHIEF DEVELOPMENT OFFICER | $251k 1,527 shares | -2% | |
| 8Weak | GLAUKOS Corp | Tomas Navratil CHIEF DEVELOPMENT OFFICER | $249k 1,615 shares | -2% | |
| 45Moderate | GKOSsell GLAUKOS Corp | Tomas Navratil CHIEF DEVELOPMENT OFFICER | $2.5M 13,744 shares | -16% | |
| 35Weak | GLAUKOS Corp | Thomas William Burns CHAIRMAN & CEO | $32M 275,000 shares | -114% | |
| 32Weak | GLAUKOS Corp | Gilbert H Kliman director | $536k 5,000 shares | -13% | |
| 23Weak | GLAUKOS Corp | Alex R. Thurman SVP & CHIEF FINANCIAL OFFICER | $33k 315 shares | -1% | |
| 58Moderate | GLAUKOS Corp | Joseph E Gilliam PRESIDENT & COO | $1.7M 19,340 shares | -17% | |
| 1Weak | GLAUKOS Corp | Tomas Navratil CHIEF DEVELOPMENT OFFICER | $44k 517 shares | -1% | |
| 12Weak | GLAUKOS Corp | Tomas Navratil CHIEF DEVELOPMENT OFFICER | $454k 5,142 shares | -6% | |
| 13Weak | GLAUKOS Corp | Alex R. Thurman SVP & CHIEF FINANCIAL OFFICER | $162k 1,520 shares | -3% |
Not investment advice. Scores and forward returns are decision support built from public SEC filings and past prices; they describe what happened after comparable filings, not what will happen after this one. Do your own research and size your risk.