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 7 sales; 368 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
39 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 | – | 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 |
| Nov 14, 2024 | Brown Capital Management LLC | 13G/AOld format | – | – | – | SEC |
| Feb 14, 2024 | Brown Capital Management LLC | 13G/AOld format | – | – | – | SEC |
| Feb 13, 2024 | Burns Thomas William | 13G/AOld format | – | – | – | SEC |
| Feb 13, 2024 | Vanguard Group Inc | 13G/AOld format | – | – | – | SEC |
| Feb 9, 2024 | FMR LLC | 13G/AOld format | – | – | – | SEC |
| Jan 22, 20242:04 PM ET | BlackRock Inc. | 13G/AOld format | – | – | – | SEC |
| Jan 10, 2024 | Wellington Management Group LLP | 13G/AOld format | – | – | – | SEC |
| Dec 11, 2023 | FMR LLC | 13GOld format | – | New | – | SEC |
| Feb 14, 2023 | Brown Capital Management LLC | 13G/AOld format | – | – | – | SEC |
| Feb 14, 2023 | Burns Thomas William | 13G/AOld format | – | – | – | SEC |
| Feb 9, 2023 | Vanguard Group Inc | 13G/AOld format | – | – | – | SEC |
| Feb 6, 2023 | Wellington Management Group LLP | 13G/AOld format | – | – | – | SEC |
| Jan 31, 20239:55 AM ET | BlackRock Inc. | 13GOld format | – | – | – | SEC |
| Feb 14, 2022 | Brown Capital Management LLC | 13G/AOld format | – | – | – | SEC |
| Feb 14, 2022 | Burns Thomas William | 13G/AOld format | – | – | – | SEC |
| Feb 10, 2022 | Vanguard Group Inc | 13GOld format | – | – | – | SEC |
| Feb 4, 2022 | Artisan Partners Limited Partnership | 13G/AOld format | – | – | – | SEC |
| Jan 28, 20222:07 PM ET | BlackRock Inc. | 13G/AOld format | – | – | – | SEC |
| Jan 10, 2022 | Wellington Management Group LLP | 13GOld format | – | New | – | SEC |
| Oct 5, 2021 | Baillie Gifford & Co | 13G/AOld format | – | – | – | SEC |
| Sep 10, 2021 | Brown Capital Management LLC | 13G/AOld format | – | – | – | SEC |
| Feb 12, 2021 | Brown Capital Management LLC | 13G/AOld format | – | – | – | SEC |
| Feb 12, 2021 | Burns Thomas William | 13G/AOld format | – | – | – | SEC |
| Feb 10, 2021 | Artisan Partners Limited Partnership | 13GOld format | – | New | – | SEC |
| Feb 5, 20217:51 AM ET | BlackRock Inc. | 13G/AOld format | – | – | – | SEC |
| Jan 8, 2021 | Vanguard Group Inc | 13G/AOld format | – | – | – | SEC |
| Jan 7, 2021 | Baillie Gifford & Co | 13G/AOld format | – | – | – | SEC |
Form 144: proposed insider sales
114 notices 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 |
|---|---|---|---|---|---|---|
| Nov 12, 20264:23 PM ET | Gilliam Joseph EOfficer | 44.9K | $11.1M | Nov 12, 202610b5-1 | Fidelity Brokerage Services LLC | SEC |
| Nov 4, 20262:31 PM ET | Kliman Gilbert HDirector | 2.50K | $632.5K | Nov 4, 2026 | Fidelity Brokerage Services LLC | SEC |
| Oct 30, 20261:04 PM ET | Navratil TomasOfficer | 44.4K | $10.6M | Oct 30, 2026 | Fidelity Brokerage Services LLC | SEC |
| Oct 5, 20264:08 PM ET | Navratil TomasOfficer | 1.53K | $251.1K | Oct 5, 202610b5-1 | Fidelity Brokerage Services LLC | SEC |
| Sep 25, 20264:10 PM ET | Navratil TomasOfficer | 1.61K | $249.2K | Sep 25, 202610b5-1 | Fidelity Brokerage Services LLC | SEC |
| Sep 16, 20264:17 PM ET | Navratil TomasOfficer | 1.46K | $243.2K | Sep 16, 202610b5-1 | Fidelity Brokerage Services LLC | SEC |
| Aug 28, 20261:41 PM ET | Navratil TomasOfficer | 13.7K | $2.48M | Aug 28, 2026 | Fidelity Brokerage Services LLC | SEC |
| Aug 19, 20264:22 PM ET | Kliman Gilbert HDirector | 2.50K | $475.0K | Aug 19, 2026 | Fidelity Brokerage Services LLC | SEC |
| Aug 11, 202612:05 PM ET | Gilliam Joseph EOfficer | 60.0K | $10.8M | Aug 11, 2026 | Fidelity Brokerage Services LLC | SEC |
| Aug 7, 20265:45 PM ET | Thurman Alex R.Officer | 20.0K | $3.60M | Aug 7, 202610b5-1 | Fidelity Brokerage Services LLC | SEC |
| Jul 31, 20264:22 PM ET | Wen LeanaDirector | 525 | $88.0K | Jul 31, 2026 | Fidelity Brokerage Services LLC | SEC |
| Jul 16, 202612:18 PM ET | Thurman Alex R.Officer | 10.0K | $1.60M | Jul 16, 202610b5-1 | Fidelity Brokerage Services LLC | SEC |
| Jul 9, 202612:42 PM ET | Thurman Alex R.Officer | 10.0K | $1.55M | Jul 9, 202610b5-1 | Fidelity Brokerage Services LLC | SEC |
| Jul 6, 202611:46 AM ET | Thurman Alex R.Officer | 10.0K | $1.50M | Jul 6, 202610b5-1 | Fidelity Brokerage Services LLC | SEC |
| Jul 1, 202612:37 PM ET | Navratil TomasOfficer | 716 | $99.6K | Jul 1, 202610b5-1 | Fidelity Brokerage Services LLC | SEC |
| Jun 16, 202611:03 AM ET | Navratil TomasOfficer | 1.54K | $200.9K | Jun 16, 202610b5-1 | Fidelity Brokerage Services LLC | SEC |
| May 14, 20264:04 PM ET | Kliman Gilbert HDirector | 5.00K | $703.8K | May 14, 2026 | Fidelity Brokerage Services LLC | SEC |
| May 11, 20264:23 PM ET | Kliman Gilbert HDirector | 5.00K | $675.0K | May 11, 2026 | Fidelity Brokerage Services LLC | SEC |
| May 1, 20263:59 PM ET | Wen LeanaDirector | 1.70K | $247.1K | May 1, 2026 | Fidelity Brokerage Services LLC | SEC |
| May 1, 202612:18 PM ET | Gilliam Joseph EOfficer | 19.6K | $2.81M | May 1, 2026 | Fidelity Brokerage Services LLC | SEC |
| Apr 30, 202610:14 AM ET | Thurman Alex R.Officer | 10.0K | $1.40M | Apr 30, 202610b5-1 | Fidelity Brokerage Services LLC | SEC |
| Apr 10, 20264:05 PM ET | Navratil TomasOfficer | 2.09K | $246.2K | Apr 10, 202610b5-1 | Fidelity Brokerage Services LLC | SEC |
| Mar 25, 20269:46 AM ET | Thurman Alex R.Officer | 2.51K | $267.3K | Mar 25, 202610b5-1 | Fidelity Brokerage Services LLC | SEC |
| Mar 24, 20269:50 AM ET | Thurman Alex R.Officer | 1.52K | $160.1K | Mar 24, 202610b5-1 | Fidelity Brokerage Services LLC | SEC |
| Mar 17, 202610:44 AM ET | Thurman Alex R.Officer | 625 | $62.0K | Mar 17, 202610b5-1 | Fidelity Brokerage Services LLC | SEC |
Showing the latest 25. See the GKOS notices from the last 12 months