GKOSNYSESurgical & Medical Instruments & ApparatusFiscal year ends December 31
GLAUKOS Corp
Financials through Q2 FY2026, quarter ended Jun 30, 2026Last filing: 10-Q on Jul 29, 2026
$166.96+2.12 (+1.29%)
Close on Oct 19, 2026
- Market cap
- $9.82B
- P/E (TTM)
- –
- Dividend yield
- –
Ownership
Institutional holdings as of Jun 30, 2026, from 13F filings
Held by institutions
100.0%
61M of 59M shares
Institutional holders
366
72 new, 38 sold out
Net institutional buying
8M
In Q2 2026
Insider trades, 12 months
0 buys · 58 sales
Net sold $69.06M
Shares held by institutions
Holders of more than 5%
Latest Schedule 13D (active) or 13G (passive) filed by each holder
| Holder | Shares | % of class | Filing | As of |
|---|---|---|---|---|
| BlackRock, Inc. | 8,160,353 | 14.40% | 13G (passive) amendment | Mar 31, 2025 |
| Janus Henderson Group PLC | 5,348,395 | 9.20% | 13G (passive) amendment | Mar 31, 2026 |
| Primecap Management Co/Ca/ | 3,376,928 | 5.88% | 13G (passive) | Dec 31, 2025 |
| Vanguard Portfolio Management | 3,256,962 | 5.60% | 13G (passive) | Mar 31, 2026 |
| Wellington Group Holdings LLP | 3,244,404 | 5.70% | 13G (passive) | Jun 30, 2025 |
| Vanguard Capital Management | 2,947,047 | 5.07% | 13G (passive) | Mar 31, 2026 |
Top institutional holders
13F holdings as of Jun 30, 2026
| Holder | Shares | % of GKOS | Value | Change | % of portfolio |
|---|---|---|---|---|---|
| BlackRock, Inc. | 9,540,056 | 16.17% | $1.33B | +450,027 | 0.02% |
| Jupiter Topco LLC | 4,862,894 | 8.24% | $679.61M | New | 0.28% |
| Vanguard Portfolio Management LLC | 3,321,839 | 5.63% | $464.26M | +113,476 | 0.02% |
| Primecap Management Co/Ca/ | 3,040,705 | 5.16% | $424.97M | −329,923 | 0.25% |
| Vanguard Capital Management LLC | 2,551,132 | 4.33% | $356.55M | +42,361 | 0.01% |
| State Street Corp | 2,315,568 | 3.93% | $323.67M | +132,951 | 0.01% |
| Millennium Management LLC | 1,581,016 | 2.68% | $220.96M | +407,320 | 0.08% |
| Holocene Advisors, LP | 1,514,931 | 2.57% | $211.73M | +131,216 | 0.48% |
| Geode Capital Management, LLC | 1,463,448 | 2.48% | $204.57M | +106,995 | 0.01% |
| Citadel Advisors LLC | 1,390,017 | 2.36% | $194.27M | −56,909 | 0.02% |
| Ameriprise Financial Inc | 1,315,057 | 2.23% | $183.79M | −295,717 | 0.04% |
| Alliancebernstein L.P. | 1,254,703 | 2.13% | $135.08M | −142,853 | 0.04% |
| Capital World Investors | 1,015,943 | 1.72% | $141.99M | +26,883 | 0.02% |
| Goldman Sachs Group Inc | 897,021 | 1.52% | $125.37M | −477,937 | 0.01% |
| Charles Schwab Investment Management Inc | 752,642 | 1.28% | $105.19M | +38,253 | 0.01% |
| Invesco Ltd. | 706,877 | 1.20% | $98.79M | −207,311 | 0.01% |
| Price T Rowe Associates Inc /Md/ | 679,632 | 1.15% | $94.99K | +343,207 | 0.01% |
| William Blair Investment Management, LLC | 661,675 | 1.12% | $92.48M | −412,144 | 0.28% |
| Driehaus Capital Management LLC | 650,571 | 1.10% | $90.92M | +162,659 | 0.53% |
| Nomura Asset Management International Inc. | 647,428 | 1.10% | $90.49M | +35,365 | 0.14% |
Institutional buying and selling by quarter
Positions opened, added to, reduced and closed by 13F filers
| Quarter | Holders | Shares held | % of shares | New / added | Reduced / closed | Shares bought | Shares sold |
|---|---|---|---|---|---|---|---|
| Q2 2026 | 366 | 61M | 100.0% | 72 / 147 | 103 / 38 | 13M | 5M |
| Q1 2026 | 336 | 58M | 98.3% | 50 / 108 | 129 / 41 | 14M | 7M |
| Q4 2025 | 332 | 57M | 96.8% | 76 / 121 | 102 / 52 | 12M | 11M |
| Q3 2025 | 315 | 57M | 96.0% | 63 / 103 | 117 / 42 | 7M | 12M |
| Q2 2025 | 297 | 61M | 100.0% | 47 / 143 | 82 / 66 | 9M | 5M |
| Q1 2025 | 317 | 58M | 97.8% | 54 / 116 | 114 / 56 | 7M | 6M |
| Q4 2024 | 322 | 57M | 96.9% | 54 / 117 | 106 / 40 | 7M | 5M |
| Q3 2024 | 315 | 55M | 93.7% | 56 / 126 | 90 / 19 | 13M | 6M |
| Q2 2024 | 282 | 56M | 94.3% | 57 / 107 | 80 / 28 | 6M | 4M |
| Q1 2024 | 254 | 55M | 92.5% | 43 / 69 | 106 / 34 | 7M | 5M |
| Q4 2023 | 246 | 52M | 88.5% | 47 / 85 | 79 / 32 | 7M | 5M |
| Q3 2023 | 233 | 51M | 85.7% | 30 / 84 | 81 / 16 | 6M | 5M |
Top mutual fund and ETF holders
Latest monthly portfolio reports (Form N-PORT)
| Fund | Shares | % of GKOS | Value | % of fund | As of |
|---|---|---|---|---|---|
| iShares Core S&P Small-Cap ETF | 3,537,101 | 6.00% | $494.35M | 0.44% | Jun 30, 2026 |
| Vanguard Total Stock Market Index Fund | 1,773,769 | 3.01% | $247.90M | 0.01% | Jun 30, 2026 |
| iShares Russell 2000 ETF | 1,480,480 | 2.51% | $206.91M | 0.25% | Jun 30, 2026 |
| Vanguard Capital Opportunity Fund | 1,478,020 | 2.51% | $206.57M | 0.63% | Jun 30, 2026 |
| Vanguard Small-Cap Index Fund | 1,280,092 | 2.17% | $178.91M | 0.09% | Jun 30, 2026 |
| Janus Henderson Triton Fund | 1,058,024 | 1.79% | $147.87M | 2.49% | Jun 30, 2026 |
| PRIMECAP Odyssey Aggressive Growth Fund | 1,008,335 | 1.71% | $168.11M | 2.27% | Jul 31, 2026 |
| SMALLCAP World Fund Inc | 989,060 | 1.68% | $138.23M | 0.15% | Jun 30, 2026 |
| Vanguard Small-Cap Growth Index Fund | 737,436 | 1.25% | $103.06M | 0.22% | Jun 30, 2026 |
| Janus Henderson Enterprise Fund | 708,701 | 1.20% | $99.05M | 0.44% | Jun 30, 2026 |
| Vanguard Extended Market Index Fund | 673,745 | 1.14% | $94.16M | 0.10% | Jun 30, 2026 |
| Janus Henderson Venture Fund | 671,790 | 1.14% | $93.89M | 2.59% | Jun 30, 2026 |
| Janus Henderson Contrarian Fund | 639,308 | 1.08% | $89.35M | 1.63% | Jun 30, 2026 |
| Fidelity Small Cap Index Fund | 630,428 | 1.07% | $105.10M | 0.31% | Jul 31, 2026 |
| Columbia Small Cap Growth Fund | 551,536 | 0.94% | $57.00M | 1.55% | May 31, 2026 |
Officers, directors and major owners
People who filed Forms 3, 4 or 5 in the last two years
| Name | Role | Shares owned | % of shares | Latest filing |
|---|---|---|---|---|
| Thomas William Burns | CHAIRMAN & CEO, Director | 1,768,667 | 3.00% | Jun 29, 2026 |
| Tomas Navratil | CHIEF DEVELOPMENT OFFICER | 70,818 | 0.12% | Sep 28, 2026 |
| Joseph E. Gilliam | PRESIDENT & COO | 132,588 | 0.22% | Aug 13, 2026 |
| Alex R. Thurman | SVP & CHIEF FINANCIAL OFFICER | 63,906 | 0.11% | Aug 11, 2026 |
| Gilbert H. Kliman | Director | 42,608 | 0.07% | Aug 20, 2026 |
| Leana Wen | Director | 21,092 | 0.04% | Aug 3, 2026 |
| Denice Torres | Director | 24,212 | 0.04% | Jun 23, 2026 |
| David F. Hoffmeister | Director | 87,725 | 0.15% | Jun 23, 2026 |
| Marc Stapley | Director | 39,327 | 0.07% | Jun 23, 2026 |
| Aimee S. Weisner | Director | 52,189 | 0.09% | Jun 23, 2026 |
| Mark J. Foley | Director | 60,267 | 0.10% | Jun 23, 2026 |
Insider trades
Common stock transactions reported on Form 4, newest first
| Insider | Date | Transaction | Shares | Price | Value | Shares after |
|---|---|---|---|---|---|---|
| Tomas Navratil CHIEF DEVELOPMENT OFFICER | Sep 25, 2026 | Sale(10b5-1 plan) | −1,083 | $154.88 | $167.74K | 70,818 |
| Tomas Navratil CHIEF DEVELOPMENT OFFICER | Sep 25, 2026 | Sale(10b5-1 plan) | −229 | $154.24 | $35.32K | 71,901 |
| Tomas Navratil CHIEF DEVELOPMENT OFFICER | Sep 25, 2026 | Sale(10b5-1 plan) | −136 | $152.71 | $20.77K | 72,130 |
| Tomas Navratil CHIEF DEVELOPMENT OFFICER | Sep 25, 2026 | Sale(10b5-1 plan) | −167 | $151.70 | $25.33K | 72,266 |
| Tomas Navratil CHIEF DEVELOPMENT OFFICER | Sep 16, 2026 | Sale(10b5-1 plan) | −460 | $167.32 | $76.97K | 72,791 |
| Tomas Navratil CHIEF DEVELOPMENT OFFICER | Sep 16, 2026 | Sale(10b5-1 plan) | −234 | $170.95 | $40.00K | 72,437 |
| Tomas Navratil CHIEF DEVELOPMENT OFFICER | Sep 16, 2026 | Sale(10b5-1 plan) | −120 | $168.38 | $20.21K | 72,671 |
| Tomas Navratil CHIEF DEVELOPMENT OFFICER | Sep 16, 2026 | Sale(10b5-1 plan) | −4 | $172.00 | $688 | 72,433 |
| Tomas Navratil CHIEF DEVELOPMENT OFFICER | Sep 16, 2026 | Sale(10b5-1 plan) | −191 | $166.20 | $31.74K | 73,251 |
| Tomas Navratil CHIEF DEVELOPMENT OFFICER | Sep 16, 2026 | Sale(10b5-1 plan) | −345 | $164.60 | $56.79K | 73,442 |
| Tomas Navratil CHIEF DEVELOPMENT OFFICER | Sep 16, 2026 | Sale(10b5-1 plan) | −103 | $163.20 | $16.81K | 73,787 |
| Tomas Navratil CHIEF DEVELOPMENT OFFICER | Aug 28, 2026 | Sale | −7,643 | $180.25 | $1.38M | 79,991 |
| Tomas Navratil CHIEF DEVELOPMENT OFFICER | Aug 28, 2026 | Sale | −10 | $182.50 | $1.83K | 73,890 |
| Tomas Navratil CHIEF DEVELOPMENT OFFICER | Aug 28, 2026 | Sale | −6,091 | $181.19 | $1.10M | 73,900 |
| Gilbert H. Kliman Director | Aug 19, 2026 | Sale | −2,500 | $190.00 | $475.00K | 37,406 |
| Gilbert H. Kliman Director | Aug 19, 2026 | Option exercise | +2,500 | $25.77 | $64.43K | 39,906 |
| Joseph E. Gilliam PRESIDENT & COO | Aug 11, 2026 | Option exercise | +10,000 | $48.46 | $484.60K | 132,588 |
| Joseph E. Gilliam PRESIDENT & COO | Aug 11, 2026 | Option exercise | +20,000 | $55.18 | $1.10M | 122,588 |
| Joseph E. Gilliam PRESIDENT & COO | Aug 11, 2026 | Sale | −27,963 | $178.89 | $5.00M | 104,625 |
| Joseph E. Gilliam PRESIDENT & COO | Aug 11, 2026 | Option exercise | +20,000 | $55.18 | $1.10M | 102,588 |
| Joseph E. Gilliam PRESIDENT & COO | Aug 11, 2026 | Option exercise | +10,000 | $48.46 | $484.60K | 82,588 |
| Joseph E. Gilliam PRESIDENT & COO | Aug 11, 2026 | Sale | −32,037 | $180.49 | $5.78M | 72,588 |
| Alex R. Thurman SVP & CHIEF FINANCIAL OFFICER | Aug 7, 2026 | Option exercise | +20,000 | $33.81 | $676.20K | 63,906 |
| Alex R. Thurman SVP & CHIEF FINANCIAL OFFICER | Aug 7, 2026 | Sale(10b5-1 plan) | −20,000 | $180.13 | $3.60M | 43,906 |
| Leana Wen Director | Jul 31, 2026 | Sale | −525 | $167.63 | $88.01K | 21,092 |
| Alex R. Thurman SVP & CHIEF FINANCIAL OFFICER | Jul 16, 2026 | Sale(10b5-1 plan) | −10,000 | $160.00 | $1.60M | 43,906 |
| Alex R. Thurman SVP & CHIEF FINANCIAL OFFICER | Jul 16, 2026 | Option exercise | +10,000 | $38.68 | $386.80K | 53,906 |
| Alex R. Thurman SVP & CHIEF FINANCIAL OFFICER | Jul 9, 2026 | Option exercise | +10,000 | $38.68 | $386.80K | 53,681 |
| Alex R. Thurman SVP & CHIEF FINANCIAL OFFICER | Jul 9, 2026 | Sale(10b5-1 plan) | −10,000 | $155.00 | $1.55M | 43,681 |
| Alex R. Thurman SVP & CHIEF FINANCIAL OFFICER | Jul 6, 2026 | Option exercise | +10,000 | $38.68 | $386.80K | 53,681 |
| Alex R. Thurman SVP & CHIEF FINANCIAL OFFICER | Jul 6, 2026 | Sale(10b5-1 plan) | −10,000 | $150.00 | $1.50M | 43,681 |
| Tomas Navratil CHIEF DEVELOPMENT OFFICER | Jul 1, 2026 | Sale(10b5-1 plan) | −716 | $139.06 | $99.57K | 87,634 |
| Thomas William Burns CHAIRMAN & CEO, Director | Jun 25, 2026 | Tax withholding | −4,059 | $142.57 | $578.69K | 68,967 |
| Joseph E. Gilliam PRESIDENT & COO | Jun 25, 2026 | Tax withholding | −1,056 | $142.57 | $150.55K | 72,363 |
| Tomas Navratil CHIEF DEVELOPMENT OFFICER | Jun 25, 2026 | Tax withholding | −483 | $142.57 | $68.86K | 88,350 |
| Tomas Navratil CHIEF DEVELOPMENT OFFICER | Jun 16, 2026 | Sale(10b5-1 plan) | −1,537 | $130.68 | $200.86K | 88,833 |
| Denice Torres Director | May 28, 2026 | Award | +1,878 | – | – | 24,212 |
| David F. Hoffmeister Director | May 28, 2026 | Award | +1,878 | – | – | 49,549 |
| Leana Wen Director | May 28, 2026 | Award | +1,878 | – | – | 21,617 |
| Mark J. Foley Director | May 28, 2026 | Award | +1,878 | – | – | 60,267 |
| Marc Stapley Director | May 28, 2026 | Award | +1,878 | – | – | 39,327 |
| Gilbert H. Kliman Director | May 28, 2026 | Award | +1,878 | – | – | 37,406 |
| Aimee S. Weisner Director | May 28, 2026 | Award | +1,878 | – | – | 20,684 |
| David F. Hoffmeister Director | May 26, 2026 | Option exercise | +15,000 | $24.69 | $370.35K | 47,671 |
| Gilbert H. Kliman Director | May 14, 2026 | Sale | −5,000 | $140.76 | $703.80K | 35,528 |
| Gilbert H. Kliman Director | May 14, 2026 | Option exercise | +5,000 | $24.69 | $123.45K | 40,528 |
| Gilbert H. Kliman Director | May 11, 2026 | Option exercise | +5,000 | $24.69 | $123.45K | 40,528 |
| Gilbert H. Kliman Director | May 11, 2026 | Sale | −5,000 | $135.00 | $675.00K | 35,528 |
| Joseph E. Gilliam PRESIDENT & COO | May 1, 2026 | Sale | −19,573 | $143.54 | $2.81M | 73,419 |
| Leana Wen Director | May 1, 2026 | Sale | −1,700 | $143.35 | $243.70K | 19,739 |
| Alex R. Thurman SVP & CHIEF FINANCIAL OFFICER | Apr 30, 2026 | Option exercise | +10,000 | $38.68 | $386.80K | 53,681 |
| Alex R. Thurman SVP & CHIEF FINANCIAL OFFICER | Apr 30, 2026 | Sale(10b5-1 plan) | −10,000 | $140.00 | $1.40M | 43,681 |
| Tomas Navratil CHIEF DEVELOPMENT OFFICER | Apr 10, 2026 | Sale(10b5-1 plan) | −210 | $117.45 | $24.66K | 91,016 |
| Tomas Navratil CHIEF DEVELOPMENT OFFICER | Apr 10, 2026 | Sale(10b5-1 plan) | −1,237 | $116.72 | $144.38K | 91,226 |
| Tomas Navratil CHIEF DEVELOPMENT OFFICER | Apr 10, 2026 | Sale(10b5-1 plan) | −614 | $119.35 | $73.28K | 90,402 |
| Tomas Navratil CHIEF DEVELOPMENT OFFICER | Apr 10, 2026 | Sale(10b5-1 plan) | −32 | $120.23 | $3.85K | 90,370 |
| Tomas Navratil CHIEF DEVELOPMENT OFFICER | Apr 2, 2026 | Tax withholding | −1,146 | $109.60 | $125.60K | 94,294 |
| Tomas Navratil CHIEF DEVELOPMENT OFFICER | Apr 2, 2026 | Tax withholding | −1,831 | $109.60 | $200.68K | 92,463 |
| Alex R. Thurman SVP & CHIEF FINANCIAL OFFICER | Apr 2, 2026 | Tax withholding | −1,589 | $109.60 | $174.15K | 43,681 |
| Joseph E. Gilliam PRESIDENT & COO | Apr 2, 2026 | Tax withholding | −3,169 | $109.60 | $347.32K | 92,992 |
Awards, option exercises, tax withholding and gifts are shown alongside open-market buys and sales. Each name links to the filing on SEC EDGAR.
Planned insider sales
Notices of proposed sale filed on Form 144 before shares are sold
| Seller | Filed | Shares | Market value | Planned sale | Acquired through |
|---|---|---|---|---|---|
| Tomas Navratil Officer | Oct 5, 2026 | 1,527 | $251.12K | Oct 5, 2026 | Restricted Stock Vesting |
| Tomas Navratil Officer | Sep 25, 2026 | 1,615 | $249.16K | Sep 25, 2026 | Restricted Stock Vesting |
| Tomas Navratil Officer | Sep 16, 2026 | 1,457 | $243.21K | Sep 16, 2026 | Restricted Stock Vesting |
| Tomas Navratil Officer | Aug 28, 2026 | 13,744 | $2.48M | Aug 28, 2026 | Restricted Stock Vesting |
| Gilbert H. Kliman Director | Aug 19, 2026 | 2,500 | $475.00K | Aug 19, 2026 | Stock Option Exercise |
| Joseph E. Gilliam Officer | Aug 11, 2026 | 60,000 | $10.78M | Aug 11, 2026 | Stock Option Exercise |
| Alex R. Thurman Officer | Aug 7, 2026 | 20,000 | $3.60M | Aug 7, 2026 | Stock Option Exercise |
| Leana Wen Director | Jul 31, 2026 | 525 | $88.01K | Jul 31, 2026 | Restricted Stock Vesting |
| Alex R. Thurman Officer | Jul 16, 2026 | 10,000 | $1.60M | Jul 16, 2026 | Stock Option Exercise |
| Alex R. Thurman Officer | Jul 9, 2026 | 10,000 | $1.55M | Jul 9, 2026 | Stock Option Exercise |
| Alex R. Thurman Officer | Jul 6, 2026 | 10,000 | $1.50M | Jul 6, 2026 | Stock Option Exercise |
| Tomas Navratil Officer | Jul 1, 2026 | 716 | $99.57K | Jul 1, 2026 | Restricted Stock Vesting |
| Tomas Navratil Officer | Jun 16, 2026 | 1,537 | $200.86K | Jun 16, 2026 | Restricted Stock Vesting |
| Gilbert H. Kliman Director | May 14, 2026 | 5,000 | $703.80K | May 14, 2026 | Option Granted 06/02/2016 |
| Gilbert H. Kliman Director | May 11, 2026 | 5,000 | $675.00K | May 11, 2026 | Option Granted 06/02/2016 |