Tomas Navratil sold $251k of GKOS
CHIEF DEVELOPMENT OFFICER at GLAUKOS Corp. 1,527 shares at an average of $164.45, traded Oct 5, 2026, filed Oct 7, 2026.
Score components
- +15RoleOfficer
- +13Trade size$251k at market
- 0Share of holdings soldSold 2.2% 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 0001193125-26-417151, as filed. Open on EDGAR
| Date | Transaction | Shares | Price | Value | Holdings after | Filed |
|---|---|---|---|---|---|---|
| Oct 5, 2026 | SOpen-market sale Common Stock10b5-1 | -888 | $163.93 | $146k | 69,930 | 5 d ago |
| Oct 5, 2026 | SOpen-market sale Common Stock10b5-1 | -327 | $164.78 | $54k | 69,603 | 5 d ago |
| Oct 5, 2026 | SOpen-market sale Common Stock10b5-1 | -312 | $165.60 | $52k | 69,291 | 5 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 | $249k 1,615 shares | -2% | |
| 8Weak | GLAUKOS Corp | Tomas Navratil CHIEF DEVELOPMENT OFFICER | $243k 1,457 shares | -2% | |
| 45Moderate | GKOSsell GLAUKOS Corp | Tomas Navratil CHIEF DEVELOPMENT OFFICER | $2.5M 13,744 shares | -16% | |
| 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% | |
| 43Moderate | GLAUKOS Corp | Mark J Foley director | $2.5M 20,687 shares | -28% |
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.