Tomas Navratil sold $454k of GKOS
CHIEF DEVELOPMENT OFFICER at GLAUKOS Corp. 5,142 shares at an average of $88.22, traded Sep 11, 2025, filed Sep 12, 2025.
Score components
- +15RoleOfficer
- +17Trade size$454k at market
- 0Share of holdings soldSold 6.4% 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 0001920053-25-000003, as filed. Open on EDGAR
| Date | Transaction | Shares | Price | Value | Holdings after | Filed |
|---|---|---|---|---|---|---|
| Sep 11, 2025 | SOpen-market sale Common Stock10b5-1 | -3,194 | $87.98 | $281k | 77,417 | Sep 12, 2025 |
| Sep 11, 2025 | SOpen-market sale Common Stock10b5-1 | -1,948 | $88.61 | $173k | 75,469 | Sep 12, 2025 |
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% | |
| 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% | |
| 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.