Comparable stake leader
BlackRock, Inc.
SEC ownership of GLAUKOS Corp
Top holders, 13D/G large-stake signals, insider positions, and transaction flow tied to CIK 0001192448.
Disclosed value leader
BlackRock, Inc.
Comparable rows
50/50
Latest evidence
07 Aug 2026
- Public ticker
- GKOS on NYSE
- Parsed ownership sources
-
13F, 13D/G, and 3/4/5
Source: Parsed SEC ownership filingsUse: Compare filing families carefully
- Largest SEC-reported holder
-
BlackRock, Inc.
Ranking: Comparable ownership first, then disclosed value
- Comparable ownership rows
-
50 of 50
Meaning: Rows with safely comparable ownership %
- Latest 13D/G holder
-
BlackRock, Inc.
Source: Latest parsed Schedule 13D/G stake
- Latest parsed ownership date
-
07 Aug 2026
Freshness: Most recent filing date in this holder set
- Issuer CIK
- 0001192448
- Issuer location
- Aliso Viejo, CA
Ownership snapshot
CIK-linked ownership evidence from parsed SEC filings.
3 signals
Issuer
Names, identifiers, and filing context for this profile.
2 identity fields
Ownership snapshot
Top shareholders of GLAUKOS Corp (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.
Comparable stake leader
BlackRock, Inc.
Disclosed value leader
BlackRock, Inc.
Comparable rows
50/50
Latest evidence
07 Aug 2026
13F
13D/G
3/4/5
Lead comparable stake: 14%
13D/G row: BlackRock, Inc.
Showing 1-8 of 50 holder rows.
Quick read
BlackRock, Inc. leads the comparable SEC ownership view at 14%.
50 of 50 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.
Open SEC evidence
Opens BlackRock, Inc.'s linked filing trail.
Comparable ownership
Top 5
BlackRock, Inc.
14%
Janus Henderson Group Ltd.
9.2%
PRIMECAP MANAGEMENT CO/CA/
5.9%
VANGUARD PORTFOLIO MANAGEMENT LLC
5.6%
VANGUARD CAPITAL MANAGEMENT LLC
5.1%
Ownership % is shown only when SEC disclosures are safely comparable across share classes.
Detailed SEC evidence table Showing 1-8 of 50 holder rows
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| BlackRock, Inc. |
13F
13D/G
Company
|
14%
from 13D/G
|
$1,333,318,226
9,540,056 shares
|
— | 30 Jun 2026 |
| Janus Henderson Group Ltd. |
13D/G
JANUS HENDERSON GROUP PLC
|
9.2%
|
$622,553,178
5,348,395 shares
|
+$271,166,371 | 31 Mar 2026 |
| PRIMECAP MANAGEMENT CO/CA/ |
13F
13D/G
Company
|
5.9%
from 13D/G
|
$424,968,931
3,040,705 shares
|
— | 30 Jun 2026 |
| VANGUARD PORTFOLIO MANAGEMENT LLC |
13F
13D/G
Company · Vanguard Portfolio Management
|
5.6%
from 13D/G
|
$464,260,219
3,321,839 shares
|
— | 30 Jun 2026 |
| VANGUARD CAPITAL MANAGEMENT LLC |
13F
13D/G
Company · Vanguard Capital Management
|
5.1%
from 13D/G
|
$356,546,208
2,551,132 shares
|
— | 30 Jun 2026 |
| FMR LLC |
13D/G
13F
Company
|
4.5%
|
$262,367,116
2,561,428 shares
|
-$360,259,421 | 31 Jul 2025 |
| Thomas W. Burns |
13D/G
3/4/5
CHAIRMAN & CEO, Director
|
4.4%
|
$239,613,202
2,553,695 shares
|
$0 | 31 Dec 2024 |
| WELLINGTON MANAGEMENT GROUP LLP |
13F
13D/G
Company
|
0.8%
from 13D/G
|
$59,847,329
428,215 shares
|
— | 30 Jun 2026 |
How to read this table
Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
Forms 3/4/5 flow
Insider trading overview
Net insider flow leans to selling over the last 12 months. Net value: -$66,579,382.
Buys
$0
Insiders: 0
Sells
$66,579,382
Insiders: 8
Net
-$66,579,382
Shares: -514,646
Window
Last 12 months
4 rolling buckets
Buy value
Sell value
Shares: 0
Shares: 514,646
| Window (months) | Buy shares | Sell shares | Buy value | Sell value | Net value |
|---|---|---|---|---|---|
| 0-3 | 0 | 115,278 | $0 | $19,900,687 | -$19,900,687 |
| 3-6 | 0 | 49,054 | $0 | $6,668,617 | -$6,668,617 |
| 6-9 | 0 | 325,000 | $0 | $37,739,242 | -$37,739,242 |
| 9-12 | 0 | 25,314 | $0 | $2,270,836 | -$2,270,836 |
Reporting owners
Insider holders from Forms 3/4/5
Showing 1-13 of 13 reporting-owner rows connected to GLAUKOS Corp. Open a relationship link for the CIK-to-CIK filing trail.
Rows
13
Largest Forms 3/4/5 holder
Thomas W. Burns
Net 12M change
-$66,579,382
Latest report
19 Aug 2026
| Name | Relationship | Holdings Value | Past Year Net Change | Change % | Valuation | Report Date |
|---|---|---|---|---|---|---|
| Thomas W. Burns | CHAIRMAN & CEO, Director | $192,084,957 | -$31,625,000 | -14% | Mixed | 25 Jun 2026 |
| Chris M. Calcaterra | Chief Operating Officer | $17,854,811 | Mixed | 24 Mar 2022 | ||
| Joseph E. Gilliam | President & Coo | $14,796,151 | -$17,236,322 | -54% | Mixed | 11 Aug 2026 |
| Tomas Navratil | Chief Development Officer | $12,186,384 | -$1,144,837 | -8.6% | Filing P/S | 01 Jul 2026 |
| David F. Hoffmeister | Director | $9,743,218 | Mixed | 28 May 2026 | ||
| Alex R. Thurman | Svp & Chief Financial Officer | $9,284,323 | -$10,175,035 | -52% | Mixed | 07 Aug 2026 |
| Gilbert H. Kliman | Director | $7,354,040 | -$2,390,150 | -25% | Mixed | 19 Aug 2026 |
| Mark J. Foley | Director | $6,488,345 | Mixed | 28 May 2026 | ||
| Aimee S. Weisner | Director | $5,618,667 | -$1,760,761 | -24% | Mixed | 28 May 2026 |
| William J. Link PhD | Director | $5,480,783 | Mixed | 03 Jun 2021 | ||
| Marc Stapley | Director | $4,233,944 | -$1,915,576 | -31% | Mixed | 28 May 2026 |
| Leana Wen | Director | $3,621,999 | -$331,701 | -8.4% | Mixed | 31 Jul 2026 |
| Denice Torres | Director | $2,693,011 | Mixed | 28 May 2026 |
Recent insider transactions for GLAUKOS Corp
Showing up to 300 recent insider transactions from the last 12 months.
| Insider | Symbol | Class | Transaction | % | SEC-reported value | SEC-reported price | Shares | Shares owned | Date | Ownership |
|---|---|---|---|---|---|---|---|---|---|---|
| Gilbert H. Kliman | GKOS | Common Stock | Sale | -6.26% | $475,000 | $190.00 | -2,500 | 37,406 | 19 Aug 2026 | Direct |
| Gilbert H. Kliman | GKOS | Common Stock | Options Exercise | 6.68% | 2,500 | 39,906 | 19 Aug 2026 | Direct | ||
| Gilbert H. Kliman | GKOS | Stock Option (Right to Buy) | Options Exercise | -16.7% | -2,500 | 12,500 | 19 Aug 2026 | Direct | ||
| Joseph E. Gilliam | GKOS | Common Stock | Sale | -45.2% | $10,784,659 | $179.74 | -60,000 | 72,588 | 11 Aug 2026 | Direct |
| Joseph E. Gilliam | GKOS | Common Stock | Options Exercise | 82.7% | 60,000 | 132,588 | 11 Aug 2026 | Direct | ||
| Joseph E. Gilliam | GKOS | Stock Option (Right to Buy) | Options Exercise | -69.2% | -60,000 | 26,751 | 11 Aug 2026 | Direct | ||
| Alex R. Thurman | GKOS | Common Stock | Sale | -31.3% | $3,602,600 | $180.13 | -20,000 | 43,906 | 07 Aug 2026 | Direct |
| Alex R. Thurman | GKOS | Common Stock | Options Exercise | 45.6% | 20,000 | 63,906 | 07 Aug 2026 | Direct | ||
| Alex R. Thurman | GKOS | Stock Option (Right to Buy) | Options Exercise | -100% | -20,000 | 0 | 07 Aug 2026 | Direct | ||
| Leana Wen | GKOS | Common Stock | Sale | -2.43% | $88,006 | $167.63 | -525 | 21,092 | 31 Jul 2026 | Direct |
| Alex R. Thurman | GKOS | Common Stock | Sale | -18.6% | $1,600,000 | $160.00 | -10,000 | 43,906 | 16 Jul 2026 | Direct |
| Alex R. Thurman | GKOS | Common Stock | Options Exercise | 22.8% | 10,000 | 53,906 | 16 Jul 2026 | Direct | ||
| Alex R. Thurman | GKOS | Stock Option (Right to Buy) | Options Exercise | -50% | -10,000 | 10,000 | 16 Jul 2026 | Direct | ||
| Alex R. Thurman | GKOS | Common Stock | Sale | -18.6% | $1,550,000 | $155.00 | -10,000 | 43,681 | 09 Jul 2026 | Direct |
| Alex R. Thurman | GKOS | Common Stock | Options Exercise | 22.9% | 10,000 | 53,681 | 09 Jul 2026 | Direct | ||
| Alex R. Thurman | GKOS | Stock Option (Right to Buy) | Options Exercise | -50% | -10,000 | 10,000 | 09 Jul 2026 | Direct | ||
| Alex R. Thurman | GKOS | Common Stock | Sale | -18.6% | $1,500,000 | $150.00 | -10,000 | 43,681 | 06 Jul 2026 | Direct |
| Alex R. Thurman | GKOS | Common Stock | Options Exercise | 22.9% | 10,000 | 53,681 | 06 Jul 2026 | Direct | ||
| Alex R. Thurman | GKOS | Stock Option (Right to Buy) | Options Exercise | -33.3% | -10,000 | 20,000 | 06 Jul 2026 | Direct | ||
| Tomas Navratil | GKOS | Common Stock | Sale | -0.81% | $99,567 | $139.06 | -716 | 87,634 | 01 Jul 2026 | Direct |
| Thomas William Burns | GKOS | Common Stock | Tax liability | -5.56% | -4,059 | 68,967 | 25 Jun 2026 | Direct | ||
| Joseph E. Gilliam | GKOS | Common Stock | Tax liability | -1.44% | -1,056 | 72,363 | 25 Jun 2026 | Direct | ||
| Tomas Navratil | GKOS | Common Stock | Tax liability | -0.54% | -483 | 88,350 | 25 Jun 2026 | Direct | ||
| Tomas Navratil | GKOS | Common Stock | Sale | -1.7% | $200,855 | $130.68 | -1,537 | 88,833 | 16 Jun 2026 | Direct |
| Mark J. Foley | GKOS | Stock Option (Right to Buy) | Award | 2,987 | 2,987 | 28 May 2026 | Direct | |||
| Leana Wen | GKOS | Stock Option (Right to Buy) | Award | 2,987 | 2,987 | 28 May 2026 | Direct | |||
| Marc Stapley | GKOS | Stock Option (Right to Buy) | Award | 2,987 | 2,987 | 28 May 2026 | Direct | |||
| Aimee S. Weisner | GKOS | Stock Option (Right to Buy) | Award | 2,987 | 2,987 | 28 May 2026 | Direct | |||
| Gilbert H. Kliman | GKOS | Stock Option (Right to Buy) | Award | 2,987 | 2,987 | 28 May 2026 | Direct | |||
| David F. Hoffmeister | GKOS | Stock Option (Right to Buy) | Award | 2,987 | 2,987 | 28 May 2026 | Direct | |||
| Denice Torres | GKOS | Stock Option (Right to Buy) | Award | 2,987 | 2,987 | 28 May 2026 | Direct | |||
| David F. Hoffmeister | GKOS | Common Stock | Options Exercise | 45.9% | 15,000 | 47,671 | 26 May 2026 | Direct | ||
| David F. Hoffmeister | GKOS | Stock Option (Right to Buy) | Options Exercise | -100% | -15,000 | 0 | 26 May 2026 | Direct | ||
| Gilbert H. Kliman | GKOS | Common Stock | Sale | -12.3% | $703,800 | $140.76 | -5,000 | 35,528 | 14 May 2026 | Direct |
| Gilbert H. Kliman | GKOS | Common Stock | Options Exercise | 14.1% | 5,000 | 40,528 | 14 May 2026 | Direct | ||
| Gilbert H. Kliman | GKOS | Stock Option (Right to Buy) | Options Exercise | -100% | -5,000 | 0 | 14 May 2026 | Direct | ||
| Gilbert H. Kliman | GKOS | Common Stock | Sale | -12.3% | $675,000 | $135.00 | -5,000 | 35,528 | 11 May 2026 | Direct |
| Gilbert H. Kliman | GKOS | Common Stock | Options Exercise | 14.1% | 5,000 | 40,528 | 11 May 2026 | Direct | ||
| Gilbert H. Kliman | GKOS | Stock Option (Right to Buy) | Options Exercise | -50% | -5,000 | 5,000 | 11 May 2026 | Direct | ||
| Joseph E. Gilliam | GKOS | Common Stock | Sale | -21% | $2,809,508 | $143.54 | -19,573 | 73,419 | 01 May 2026 | Direct |
| Leana Wen | GKOS | Common Stock | Sale | -7.93% | $243,695 | $143.35 | -1,700 | 19,739 | 01 May 2026 | Direct |
| Alex R. Thurman | GKOS | Common Stock | Sale | -18.6% | $1,400,000 | $140.00 | -10,000 | 43,681 | 30 Apr 2026 | Direct |
| Alex R. Thurman | GKOS | Common Stock | Options Exercise | 22.9% | 10,000 | 53,681 | 30 Apr 2026 | Direct | ||
| Alex R. Thurman | GKOS | Stock Option (Right to Buy) | Options Exercise | -25% | -10,000 | 30,000 | 30 Apr 2026 | Direct | ||
| Tomas Navratil | GKOS | Common Stock | Sale | -2.26% | $246,175 | $117.62 | -2,093 | 90,370 | 10 Apr 2026 | Direct |
| Tomas Navratil | GKOS | Common Stock | Tax liability | -3.12% | -2,977 | 92,463 | 02 Apr 2026 | Direct | ||
| Alex R. Thurman | GKOS | Common Stock | Tax liability | -3.51% | -1,589 | 43,681 | 02 Apr 2026 | Direct | ||
| Joseph E. Gilliam | GKOS | Common Stock | Tax liability | -3.3% | -3,169 | 92,992 | 02 Apr 2026 | Direct | ||
| Thomas William Burns | GKOS | Common Stock | Tax liability | -12% | -9,937 | 73,026 | 02 Apr 2026 | Direct | ||
| Thomas William Burns | GKOS | Common Stock | Gift | 18.8% | 180,308 | 1,141,593 | 01 Apr 2026 | Through the Burns Family Trust |
* marks a reported price that did not pass the local price check.