GKOS
GLAUKOS Corp · Healthcare · Market cap $10.4B
Insiders sold $21.3M net in the last 90 days ·5 sellers, 0 buyers· 6 of 10 sales under Rule 10b5-1 plans· latest Form 4 filed Oct 7, 2026
Insider Buying
$0
reported purchases (SEC code P)
Insider Selling
$69.3M
reported sales (SEC code S)
Unique Insiders
8
in the rolling window
Latest filing
Oct 7, 2026
Navratil Tomas
GLAUKOS Corp (GKOS) has 74 SEC Form 4 filings (144 transaction rows) in the rolling window, disclosed by 8 distinct insiders. Most recent filing: Oct 7, 2026.
Inside the rolling window, 8 insiders at GLAUKOS Corp reported no open-market purchases and 32 open-market sales totaling $69.3M. The most active filer is SVP & CHIEF FINANCIAL OFFICER Thurman Alex R. with 9 filings. Insiders have net sold $29.2M over the trailing 6 months. The most recent open-market filing is a sale of 1,527 shares by CHIEF DEVELOPMENT OFFICER Navratil Tomas, dated Oct 5, 2026, worth $251K.
- Industry:Medical - Devices
- CEO:Thomas William Burns
- Employees:1,094
- HQ:Aliso Viejo, CA, US
- IPO:2015-06-25
| Source | |||||||
|---|---|---|---|---|---|---|---|
| CHIEF DEVELOPMENT OFFICER | Sale | 1,527 | $251K | Oct 7 | +2.7% | SEC ↗ | |
| CHIEF DEVELOPMENT OFFICER | Sale | 1,615 | $249K | Sep 28 | +11.5% | SEC ↗ | |
| CHIEF DEVELOPMENT OFFICER | Sale | 1,457 | $243K | Sep 18 | +8.0% | SEC ↗ | |
| CHIEF DEVELOPMENT OFFICER | Sale | 13,744 | $2.5M | Sep 1 | — | SEC ↗ | |
Kliman Gilbert HFirst in 3 months | Director | Sale | 2,500 | $475K | Aug 21 | — | SEC ↗ |
Gilliam Joseph EFirst in 3 months | PRESIDENT & COO | Sale | 60,000 | $10.8M | Aug 13 | — | SEC ↗ |
| SVP & CHIEF FINANCIAL OFFICER | Sale | 20,000 | $3.6M | Aug 11 | — | SEC ↗ | |
WEN LEANAFirst in 3 months | Director | Sale | 525 | $88K | Aug 3 | — | SEC ↗ |
| SVP & CHIEF FINANCIAL OFFICER | Sale | 10,000 | $1.6M | Jul 21 | — | SEC ↗ | |
| SVP & CHIEF FINANCIAL OFFICER | Sale | 10,000 | $1.6M | Jul 14 | — | SEC ↗ | |
| SVP & CHIEF FINANCIAL OFFICER | Sale | 10,000 | $1.5M | Jul 9 | — | SEC ↗ | |
| CHIEF DEVELOPMENT OFFICER | Sale | 716 | $100K | Jul 9 | — | SEC ↗ | |
| CHIEF DEVELOPMENT OFFICER | Sale | 1,537 | $201K | Jun 18 | — | SEC ↗ | |
| Director | Sale | 5,000 | $704K | May 18 | — | SEC ↗ | |
Kliman Gilbert HFirst in 5 months | Director | Sale | 5,000 | $675K | May 13 | — | SEC ↗ |
| SVP & CHIEF FINANCIAL OFFICER | Sale | 10,000 | $1.4M | May 4 | — | SEC ↗ | |
Gilliam Joseph EFirst in 3 months | PRESIDENT & COO | Sale | 19,573 | $2.8M | May 4 | — | SEC ↗ |
WEN LEANAFirst filing | Director | Sale | 1,700 | $244K | May 4 | — | SEC ↗ |
| CHIEF DEVELOPMENT OFFICER | Sale | 2,093 | $246K | Apr 14 | — | SEC ↗ | |
| SVP & CHIEF FINANCIAL OFFICER | Sale | 2,511 | $267K | Mar 27 | — | SEC ↗ | |
| SVP & CHIEF FINANCIAL OFFICER | Sale | 1,521 | $160K | Mar 25 | — | SEC ↗ | |
Navratil TomasFirst filing | CHIEF DEVELOPMENT OFFICER | Sale | 1,031 | $101K | Mar 19 | — | SEC ↗ |
Thurman Alex R.First in 4 months | SVP & CHIEF FINANCIAL OFFICER | Sale | 625 | $62K | Mar 19 | — | SEC ↗ |
WEISNER AIMEE SFirst filing | Director | Sale | 15,000 | $1.8M | Feb 23 | — | SEC ↗ |
| Director | Sale | 15,000 | $1.9M | Jan 26 | — | SEC ↗ |
Earnings: last 7 quarters
Frequently asked questions
How many SEC Form 4 insider filings does GKOS have?
GLAUKOS Corp (GKOS) has 74 SEC Form 4 filings (144 transaction rows) in the rolling 365-day window, disclosed by 8 distinct insiders. Most recent filing: Oct 7, 2026.
When was the most recent SEC Form 4 filing for GKOS?
The most recent Form 4 filing for GKOS on Tracefour is dated Oct 7, 2026.
Who is the most active insider at GKOS?
The most active SEC Form 4 filer at GKOS in the rolling window is SVP & CHIEF FINANCIAL OFFICER Thurman Alex R., with 9 filings.
What is the net insider flow at GKOS over the last 6 months?
Over the trailing 180 days, insiders at GKOS have net sold $29.2M based on SEC Form 4 disclosures.
What is the total insider buy and sell value at GKOS in the current window?
Inside the rolling window, insiders at GKOS bought $0 and sold $69.3M based on SEC Form 4 filings.
Can I get alerts for GKOS insider trading?
Yes. Tracefour sends a free email when a new SEC Form 4 purchase or sale is filed at GLAUKOS Corp (GKOS). Alerts are set per company from the page itself, there is no paid tier, and each email links to the original filing on SEC EDGAR.
Related companies
GLAUKOS Corp is in the Healthcare sector.