Companies / Glaukos Corp
Glaukos Corp
NYSE: GKOSCIK 1192448ALISO VIEJO, CA
Insider flow · last 90 daysNet sells $200.9K
Financials · FY2025
Ownership
59.0M shares outstanding · as of Jul 28, 2026
Ownership
| Insiders | 2.88% | 1,697,521 |
| 10%+ / strategic | 16.24% | 9,580,937 |
| Institutions | 95.09% | 56,087,892 |
| Public float | 0.00% | 0 |
Reported holdings exceed shares outstanding — public float shown as 0; some positions may overlap or lag.
% of common shares outstanding (exact, from the latest cover-page filing). Institutions are quarterly 13F snapshots; insiders reflect current officers & directors.
Insiders 11
View all →| Insider | % of shares | Shares |
|---|---|---|
Burns Thomas WilliamCEOCHAIRMAN & CEO · Director | 2.05% | 1,210,560 |
Navratil TomasCHIEF DEVELOPMENT OFFICER | 0.15% | 88,350 |
Gilliam Joseph EPRESIDENT & COO | 0.12% | 72,363 |
Foley Mark JDirector | 0.10% | 60,267 |
Weisner Aimee SDirector | 0.09% | 50,189 |
Hoffmeister David FDirector | 0.08% | 49,549 |
Thurman Alex R.SVP & CHIEF FINANCIAL OFFICER | 0.07% | 43,681 |
Stapley MarcDirector | 0.07% | 39,327 |
Kliman Gilbert HDirector | 0.06% | 37,406 |
Torres DeniceDirector | 0.04% | 24,212 |
Institutional holders 340
View all →| Holder | Value | % of shares |
|---|---|---|
| $1.33B | 16.17% | |
| $679.77M | 10.21% | |
| $575.84M | 9.07% | |
| $381.29M | 5.73% | |
| $323.67M | 3.93% | |
| $237.60M | 3.57% | |
| $157.80M | 2.37% | |
| $152.48M | 2.29% | |
| $146.70M | 2.20% | |
| $146.06M | 2.30% |
Activity
Jun 30, 2026View all →
InsidersInstitutions
Who's accumulating and trimming this stock (13F).| Date | Actor | Action | Security | Value | Shares Δ | Position after | Impact |
|---|---|---|---|---|---|---|---|
| Q1 2026 as of | Janus Henderson Group PLC 13F manager | Add | Common stock | $250.82M | +2.3M +77.17% | 5,348,395 9.07% of shares | high |
| Q1 2026 as of | Norges Bank 13F manager | Exit | Common stock | $-60.54M | -536K -100.00% | 0 | high |
| Q2 2026 as of | BlackRock, Inc. 13F manager | Add | Common stock | $52.48M | +376K +4.10% | 9,540,056 16.17% of shares | high |
| Q1 2026 as of | Westfield Capital Management Company, L.P. 13F manager | New | Common stock | $51.92M | +482K | 482,219 0.82% of shares | high |
| Q1 2026 as of | Millennium Management LLC 13F manager | Trim | Common stock | $-46.94M | -436K -27.09% | 1,173,696 1.99% of shares | medium |
| Q1 2026 as of | D. E. Shaw & Co., Inc. 13F manager | Trim | Common stock | $-33.06M | -307K -55.01% | 251,176 0.43% of shares | medium |
| Q1 2026 as of | AllianceBernstein L.P. 13F manager | Trim | Common stock | $-27.76M | -246K -14.96% | 1,397,556 2.37% of shares | medium |
| Q2 2026 as of | State Street Corporation 13F manager | Add | Common stock | $27.00M | +193K +9.10% | 2,315,568 3.93% of shares | medium |
5%+ ownership events
Schedule 13D / 13G
| Filer | Stance | % of class |
|---|---|---|
| Vanguard Group Inc | Passive13G/A | — |
| Wellington Management Group LLP | Passive13G/A | — |
| Primecap Management CO/CA | Passive13G | — |
| Janus Henderson Group PLC | Passive13G | — |
| Janus Henderson Group PLC | Passive13G/A | — |
| Vanguard Capital Management | Passive13G | — |
| Vanguard Portfolio Management | Passive13G | — |
Securities
via CUSIP / OpenFIGI
| Symbol | Type | CUSIP |
|---|---|---|
| GKOS | — | 377322102 |