GKOS: Glaukos Corp insider trading, 5% holders and institutional ownership
From public SEC filings: open-market insider purchases and sales (Form 4, last 180 days), holders of 5% or more (Schedules 13D and 13G) and institutional ownership (Form 13F). Insider and 5% data delayed 48 hours.
Insider trading
0 open-market buys totaling - and 7 sales totaling $500K in the last 180 days.
Insider sales
| Trade date | Insider | Role | Value | 10b5-1 plan |
|---|---|---|---|---|
| 2026-10-05 | Navratil Tomas | Officer | $146K | yes |
| 2026-10-05 | Navratil Tomas | Officer | $54K | yes |
| 2026-10-05 | Navratil Tomas | Officer | $52K | yes |
| 2026-09-25 | Navratil Tomas | Officer | $25K | yes |
| 2026-09-25 | Navratil Tomas | Officer | $21K | yes |
| 2026-09-25 | Navratil Tomas | Officer | $35K | yes |
| 2026-09-25 | Navratil Tomas | Officer | $168K | yes |
Institutional ownership (Q2 2026)
368 institutions reported holding $8.20B of Glaukos Corp on Form 13F (337 the quarter before). 67 opened a new position and 38 sold out. Shares held by institutions: +5%.
| Largest holders | Shares | Value |
|---|---|---|
| BlackRock, Inc. | 9,540,056 | $1.33B |
| Jupiter Topco LLC | 4,862,894 | $679.61M |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 3,321,839 | $464.26M |
| PRIMECAP MANAGEMENT CO/CA/ | 3,040,705 | $424.97M |
| VANGUARD CAPITAL MANAGEMENT LLC | 2,551,132 | $356.55M |
| STATE STREET CORP | 2,315,568 | $323.67M |
| MILLENNIUM MANAGEMENT LLC | 1,581,016 | $220.96M |
| Holocene Advisors, LP | 1,514,931 | $211.73M |
| GEODE CAPITAL MANAGEMENT, LLC | 1,463,448 | $204.57M |
| CITADEL ADVISORS LLC | 1,390,017 | $194.27M |
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