No material insider selling detected — recent transactions are consistent with routine equity compensation vesting and tax settlements. No signal of distress; monitor for future open-market selling trends.
Price Chart
Executive Summary
Multiple GLAUKOS executives, including the CEO, CFO, and COO, sold shares in a recent cluster, but the majority of transactions were tax withholding events (non-cash) tied to equity vesting. Open-market sales totaled $106,741, a trivial amount relative to the company's $6.0B market cap.
Key Financial Metrics
Key Facts
- CEO Burns sold $277K and $506K in two tax withholding events (total $783K), not open-market sales.
- CFO Thurman open-market sold $62K and had $60.7K in tax withholding.
- COO Gilliam had $239K and $117.6K in tax withholding (total $356.5K), no open-market sale.
- Only two open-market sales: CFO ($62K) and CDO Navratil ($44.8K), totaling $106.7K.
- All tax-related share dispositions (F code) are non-cash events to cover withholding taxes on vested RSUs.
Financial Impact
$106,741 in open-market insider selling over 7 days; $1.4M in total share dispositions including tax withholding
Risk Factors
- Perception risk: Large tax withholding amounts may be misinterpreted as active selling.
- Concentration risk: Heavy insider ownership could lead to larger future sales if sentiment shifts.
Market Snapshot
Investment Themes
Documents Analyzed
This report is based on 1 SEC document filed with EDGAR.
| Document | Accession Number |
|---|---|
| CONTEXT: Insider Cluster Data (9 trades, 7d window) | cluster-GKOS-1773951050303 |
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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