Summary
Updated Aug 31, 2026
Alex R. Thurman is SVP & CHIEF FINANCIAL OFFICER of GLAUKOS Corp (GKOS). 12 SEC Form 4 filings on record going back to 2025, most recently on 11 August 2026. Most recent open-market trade: sold $3.60M of GKOS on 11 August 2026. Lifetime open-market sales: $10.18M.
Recent Transactions
20Every recent SEC Form 4 transaction Alex R. Thurman has reported, most recent first.
Trading Pattern
InsiderAlpha's records for Alex R. Thurman go back to 2025: 12 primary Form 4 filings, an average of 6.0 per year. 26 recorded transactions carry a Rule 10b5-1 flag, meaning they were pre-scheduled under a written trading plan rather than discretionary.
Other Insiders Active in the Same Stocks
Insiders who reported open-market trades in the last 12 months at the companies Alex R. Thurman files at. Multiple unrelated insiders buying the same stock within a short window, cluster buying, has historically been one of the strongest Form 4 signals.
- Thomas William Burns - $31.63M of GKOS open-market activity in the last 12 months
- Joseph E. Gilliam - $17.24M of GKOS open-market activity in the last 12 months
- Marc Stapley - $1.92M of GKOS open-market activity in the last 12 months
- Gilbert H. Kliman - $1.85M of GKOS open-market activity in the last 12 months
- Aimee S. Weisner - $1.76M of GKOS open-market activity in the last 12 months
- Tomas Navratil - $1.14M of GKOS open-market activity in the last 12 months
More Notable Insiders
Other corporate insiders with significant SEC Form 4 track records on InsiderAlpha:
Frequently Asked Questions
Who is Alex R. Thurman?
Alex R. Thurman is a corporate insider, tracked as SVP & CHIEF FINANCIAL OFFICER of GLAUKOS Corp (GKOS). InsiderAlpha holds 12 primary Form 4 filings for them, the earliest from 2025, updated as new SEC EDGAR filings are processed.
How many SEC Form 4 filings has Alex R. Thurman submitted recently?
4 primary Form 4 filings in the last 90 days, covering 1 company.
Has Alex R. Thurman been buying or selling stock?
Recorded transactions: 0 open-market purchases and 9 open-market sales ($10.18M) across all tracked filings.
Where can I see all of Alex R. Thurman's SEC filings?
All Form 4 filings, transaction values, and 10b5-1 plan flags are listed on this page and updated in real time as new SEC EDGAR filings are processed.
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