The insider selling is routine and immaterial relative to GKOS's $10.7B market cap. The CFO's sale follows option exercises and is likely liquidity-driven. No actionable signal — monitor for any future open-market buying by C-suite executives, which would carry more weight.
Price Chart
Executive Summary
A cluster of insider selling at Glaukos Corp (GKOS) totaling $3.69M over 8 days, dominated by CFO Alex Thurman's $3.6M open-market sale following derivative exercises. Director Leana Wen also sold $88K. At a $10.7B market cap, the total represents ~0.03% of market cap — well below the 0.1% materiality threshold — and the CFO's sale is likely liquidity-driven from option exercises. The selling is routine and non-informative, with no bearish signal for the stock.
Key Financial Metrics
Key Facts
- CFO Alex Thurman sold 20,000 shares at $180.13 for $3.6M on 2026-08-07, following exercise of 20,000 options at $0 and 20,000 options at $33.81
- Director Leana Wen sold 525 shares at $167.63 for $88K on 2026-07-31
- Total insider selling of $3.69M represents ~0.03% of GKOS's $10.7B market cap — trivial and routine
- No open-market buying in the cluster; all insider activity is selling
- The CFO's sale is consistent with a cashless exercise pattern (sell-to-cover or diversification), not a bearish signal
Financial Impact
Total insider selling of $3.69M, representing 0.03% of market cap — immaterial
Risk Factors
- Insider selling could accelerate if the stock continues to appreciate, but current levels are not concerning
Market Snapshot
Investment Themes
Documents Analyzed
This report is based on 1 SEC document filed with EDGAR.
| Document | Accession Number |
|---|---|
| CLUSTER Data (Synthetic) | cluster-GKOS-1786485690699 |
Filters
| Type | Now | ||||
|---|---|---|---|---|---|
Aug 13, 2026 7w ago | Insider Cluster | $184.53 $171.09 | ▼ −7.28% | ▼ −5.29% | $164.42 (−10.90%) |
Aug 11, 2026 7w ago | Insider Cluster | $186.63 $170.38 | ▼ −8.71% | ▼ −6.81% | $164.42 (−11.90%) |
Aug 3, 2026 8w ago | 8-K | $170.87 $179.56 | ▲ +5.09% | ▲ +3.85% | $164.42 (−3.77%) |
Jul 9, 2026 12w ago | Insider Cluster | $155.07 $170.99 | ▲ +10.27% | ▲ +8.02% | $164.42 (+6.03%) |
May 4, 2026 21w ago | 8-K | $135.85 $103.12 | ▼ −24.09% | ▼ −29.74% | $164.42 (+21.03%) |
May 1, 2026 22w ago | Insider Cluster | $140.22 $103.12 | ▼ −26.46% | ▼ −31.74% | $164.42 (+17.26%) |
Mar 16, 2026 28w ago | Insider Cluster | $98.94 $120.52 | ▲ +21.81% | ▲ +18.03% | $164.42 (+66.18%) |
Mar 16, 2026 28w ago | Insider Cluster | $98.94 $120.52 | ▲ +21.81% | ▲ +18.03% | $164.42 (+66.18%) |
US Market Status
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