GKOS
GLAUKOS Corp
NYSE · Healthcare · Medical - Devices · US
$166.96
+1.29%0
Insider buys (3m)
22
Insider sells (3m)
-$18.2M
Net value (3m)
+7.9%
Price return (3m)
Form 4 filings
| Date | Insider | Activity | Shares | Price |
|---|---|---|---|---|
| Oct 7, 2026 | Navratil Tomas · officer: CHIEF DEVELOPMENT OFFICER | Sale | 888 | $164 |
| Oct 7, 2026 | Navratil Tomas · officer: CHIEF DEVELOPMENT OFFICER | Sale | 327 | $165 |
| Oct 7, 2026 | Navratil Tomas · officer: CHIEF DEVELOPMENT OFFICER | Sale | 312 | $166 |
| Sep 28, 2026 | Navratil Tomas · officer: CHIEF DEVELOPMENT OFFICER | Sale | 167 | $152 |
| Sep 28, 2026 | Navratil Tomas · officer: CHIEF DEVELOPMENT OFFICER | Sale | 136 | $153 |
| Sep 28, 2026 | Navratil Tomas · officer: CHIEF DEVELOPMENT OFFICER | Sale | 1,083 | $155 |
| Sep 28, 2026 | Navratil Tomas · officer: CHIEF DEVELOPMENT OFFICER | Sale | 229 | $154 |
| Sep 18, 2026 | Navratil Tomas · officer: CHIEF DEVELOPMENT OFFICER | Sale | 234 | $171 |
| Sep 18, 2026 | Navratil Tomas · officer: CHIEF DEVELOPMENT OFFICER | Sale | 4 | $172 |
| Sep 18, 2026 | Navratil Tomas · officer: CHIEF DEVELOPMENT OFFICER | Sale | 460 | $167 |
| Sep 18, 2026 | Navratil Tomas · officer: CHIEF DEVELOPMENT OFFICER | Sale | 120 | $168 |
| Sep 18, 2026 | Navratil Tomas · officer: CHIEF DEVELOPMENT OFFICER | Sale | 191 | $166 |
| Sep 18, 2026 | Navratil Tomas · officer: CHIEF DEVELOPMENT OFFICER | Sale | 103 | $163 |
| Sep 18, 2026 | Navratil Tomas · officer: CHIEF DEVELOPMENT OFFICER | Sale | 345 | $165 |
| Sep 1, 2026 | Navratil Tomas · officer: CHIEF DEVELOPMENT OFFICER | Sale | 6,091 | $181 |
| Sep 1, 2026 | Navratil Tomas · officer: CHIEF DEVELOPMENT OFFICER | Sale | 10 | $183 |
| Sep 1, 2026 | Navratil Tomas · officer: CHIEF DEVELOPMENT OFFICER | Sale | 7,643 | $180 |
| Aug 20, 2026 | Kliman Gilbert H · director | Sale | 2,500 | $190 |
| Aug 20, 2026 | Kliman Gilbert H · director | M-Exempt | 2,500 | $26 |
| Aug 13, 2026 | Gilliam Joseph E · officer: PRESIDENT & COO | M-Exempt | 20,000 | $55 |
| Aug 13, 2026 | Gilliam Joseph E · officer: PRESIDENT & COO | Sale | 32,037 | $180 |
| Aug 13, 2026 | Gilliam Joseph E · officer: PRESIDENT & COO | M-Exempt | 10,000 | $48 |
| Aug 13, 2026 | Gilliam Joseph E · officer: PRESIDENT & COO | Sale | 27,963 | $179 |
| Aug 11, 2026 | Thurman Alex R. · officer: SVP & CHIEF FINANCIAL OFFICER | M-Exempt | 20,000 | $34 |
| Aug 11, 2026 | Thurman Alex R. · officer: SVP & CHIEF FINANCIAL OFFICER | Sale | 20,000 | $180 |
| Aug 3, 2026 | WEN LEANA · director | Sale | 525 | $168 |
| Jul 21, 2026 | Thurman Alex R. · officer: SVP & CHIEF FINANCIAL OFFICER | Sale | 10,000 | $160 |
| Jul 21, 2026 | Thurman Alex R. · officer: SVP & CHIEF FINANCIAL OFFICER | M-Exempt | 10,000 | $39 |
| Jul 13, 2026 | Thurman Alex R. · officer: SVP & CHIEF FINANCIAL OFFICER | Sale | 10,000 | $155 |
| Jul 13, 2026 | Thurman Alex R. · officer: SVP & CHIEF FINANCIAL OFFICER | M-Exempt | 10,000 | $39 |
Institutional positioning
13F filings over the trailing two quarters
New 128Increased 257Reduced 244Sold out 41
| Filer | Action | Shares | Filed |
|---|---|---|---|
| BlackRock, Inc. | Increased | 9,540,056 | Aug 7, 2026 |
| BLACKROCK, INC. | Reduced | 9,090,029 | May 13, 2026 |
| JANUS HENDERSON GROUP PLC | Increased | 5,348,395 | May 18, 2026 |
| Jupiter Topco LLC | New Position | 4,862,894 | Aug 14, 2026 |
| PRIMECAP MANAGEMENT CO/CA/ | Reduced | 3,370,628 | May 11, 2026 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | Increased | 3,321,839 | Aug 13, 2026 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | New Position | 3,208,363 | May 8, 2026 |
| PRIMECAP MANAGEMENT CO/CA/ | Reduced | 3,040,705 | Aug 14, 2026 |
| VANGUARD CAPITAL MANAGEMENT LLC | Increased | 2,551,132 | Aug 13, 2026 |
| VANGUARD CAPITAL MANAGEMENT LLC | New Position | 2,508,771 | May 15, 2026 |
| STATE STREET CORP | Increased | 2,315,568 | Sep 22, 2026 |
| STATE STREET CORP | Increased | 2,182,617 | May 15, 2026 |
| MILLENNIUM MANAGEMENT LLC | Increased | 1,611,016 | Aug 14, 2026 |
| AMERIPRISE FINANCIAL INC | Reduced | 1,610,774 | Jul 17, 2026 |
| Holocene Advisors, LP | Increased | 1,514,931 | Aug 14, 2026 |
Insider activity from SEC Form 4; institutional positioning from 13F filings · Latest filing Oct 7, 2026