Tomas Navratil is CHIEF DEVELOPMENT OFFICER at GLAUKOS Corp (GKOS). They have made 1 open-market trade across 1 company since 2025, most recently 2026-10-05.
CIK 0001920053
Unrated. We grade insiders only on stock they chose to buy on the open market. Grants, option exercises and vesting say nothing about timing, so they don't count — which is why someone can file often and still have no grade. It isn't a bad sign: unrated buys beat every graded tier below A.
0 open-market purchases, against 1 sale. Too few scored purchases to measure a record yet.
| Ticker | Shares | Value |
|---|---|---|
| GKOS | 69,291 | $11.4M |
Shares reported on the most recent Form 4, priced at the 2026-10-07 close.
Counted per filing, not per execution lot — a purchase filled in several tranches is one decision.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| GKOS | SELL · 10b5-1 | 2026-10-05 | 2026-10-07 | $164.45 | $251K | — | — | — |
| GKOS | SELL · 10b5-1 | 2026-09-25 | 2026-09-28 | $154.28 | $249K | +4.9% | — | — |
| GKOS | SELL · 10b5-1 | 2026-09-16 | 2026-09-18 | $166.92 | $243K | -0.5% | — | — |
| GKOS | SELL | 2026-08-28 | 2026-09-01 | $180.67 | $2.5M | -3.3% | -7.8% | — |
| GKOS | SELL · 10b5-1 | 2026-07-01 | 2026-07-08 | $139.06 | $100K | +1.6% | +17.6% | +5.6% |
| GKOS | SELL · 10b5-1 | 2026-06-16 | 2026-06-18 | $130.68 | $201K | +6.5% | +20.3% | +26.2% |
| GKOS | SELL · 10b5-1 | 2026-04-10 | 2026-04-14 | $117.62 | $246K | +0.4% | +17.4% | +26.2% |
| GKOS | SELL · 10b5-1 | 2026-03-16 | 2026-03-19 | $98.04 | $101K | +3.0% | +19.2% | +21.8% |
| GKOS | SELL · 10b5-1 | 2025-09-22 | 2025-09-24 | $84.22 | $44K | +5.3% | -9.2% | +41.2% |
| GKOS | SELL · 10b5-1 | 2025-09-11 | 2025-09-12 | $88.22 | $907K | -0.5% | -0.1% | +31.3% |
| GKOS | SELL · 10b5-1 | 2025-02-14 | 2025-02-19 | $147.14 | $1.0M | -31.8% | -36.1% | -39.1% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.