GLAUKOS Corp
GKOS- Exchange
- NYSE
- Industry
- Surgical & Medical Instruments & Apparatus
- SEC CIK
- 0001192448
In the last 90 days, GLAUKOS Corp insiders filed 0 open-market purchases and 10 sales; 367 institutions reported holding it in 13F filings for Q2 2026, worth $8.44B in total; no superinvestor holds it.
Holders of 5% or more of GKOS
Holders whose latest Schedule 13D or 13G filing reports 5% or more of GLAUKOS Corp, largest stake first. The change is against the holder's previous filing.
| Holder | Latest form | Stake | Change | First filed | Latest filing | Filing |
|---|---|---|---|---|---|---|
| BlackRock, Inc. | 13G/A | 14.40%8.16M shares | – | Apr 29, 20251 filing | Apr 29, 2025 | SEC |
| Janus Henderson Group PLC | 13G/A | 9.20%5.35M shares | +3.90 ppfrom 5.30% | Feb 17, 20262 filings | May 15, 2026 | SEC |
| Primecap Management Co | 13G | 5.88%3.38M shares | New | Feb 11, 20261 filing | Feb 11, 2026 | SEC |
| Vanguard Portfolio Management LLC | 13G | 5.60%3.26M shares | New | Apr 29, 20261 filing | Apr 29, 2026 | SEC |
| Vanguard Capital Management LLC | 13G | 5.07%2.95M shares | New | Apr 29, 20261 filing | Apr 29, 2026 | SEC |
Stakes are as of each holder's latest filing. Holders whose last filing was in the old format (before December 18, 2024) have no stake on record and are not listed, and after an acquisition or delisting holders usually stop filing.
13D and 13G filings
12 Schedule 13D and 13G filings on GLAUKOS Corp, newest first, including old-format filings without a stake.
| Filed (ET) | Filer | Form | Stake | Change | Event date | Filing |
|---|---|---|---|---|---|---|
| May 15, 202612:37 PM ET | Janus Henderson Group PLC | 13G/A | 9.20%5.35M shares | +3.90 ppfrom 5.30% | Mar 31, 2026 | SEC |
| Apr 29, 20266:35 PM ET | Vanguard Capital Management LLC | 13G | 5.07%2.95M shares | New | Mar 31, 2026 | SEC |
| Apr 29, 20261:48 PM ET | Vanguard Portfolio Management LLC | 13G | 5.60%3.26M shares | New | Mar 31, 2026 | SEC |
| Mar 26, 20266:39 PM ET | Vanguard Group Inc | 13G/A | 0.00%0 shares | –Below 5% | Mar 13, 2026 | SEC |
| Feb 17, 202612:43 PM ET | Janus Henderson Group PLC | 13G | 5.30%3.02M shares | New | Dec 31, 2025 | SEC |
| Feb 11, 202612:55 PM ET | Primecap Management Co | 13G | 5.88%3.38M shares | New | Dec 31, 2025 | SEC |
| Feb 10, 202611:17 AM ET | Wellington Management Group LLPand 2 others | 13G/A | 0.80%486.8K shares | −4.90 ppfrom 5.70%Below 5% | Dec 31, 2025 | SEC |
| Aug 12, 202510:34 AM ET | Wellington Management Group LLPand 3 others | 13G | 5.70%3.24M shares | New | Jun 30, 2025 | SEC |
| Aug 7, 202510:16 AM ET | FMR LLCand 1 other | 13G/A | 4.50%2.56M shares | −6.50 ppfrom 11.00%Below 5% | Jul 31, 2025 | SEC |
| Apr 29, 20253:34 PM ET | BlackRock, Inc. | 13G/A | 14.40%8.16M shares | – | Mar 31, 2025 | SEC |
| Feb 12, 20254:42 PM ET | Burns Thomas William | 13G/A | 4.40%2.55M shares | –Below 5% | Dec 31, 2024 | SEC |
| Feb 12, 20259:19 AM ET | FMR LLCand 1 other | 13G/A | 11.00%6.08M shares | – | Dec 31, 2024 | SEC |
Form 144: proposed insider sales
1 notice from officers, directors and other affiliates planning to sell GLAUKOS Corp shares, newest first.
| Filed (ET) | Seller | Shares to sell | Market value | Planned sale | Broker | Filing |
|---|---|---|---|---|---|---|
| Sep 25, 20264:10 PM ET | Navratil TomasOfficer | 1.61K | $249.2K | Sep 25, 202610b5-1 | Fidelity Brokerage Services LLC | SEC |