Traders should watch for potential downward pressure on the stock, especially if additional insiders sell. The concentration of sales among C-suite executives, including the CEO, suggests possible lack of confidence despite non-cash option exercises being routine.
Price Chart
Executive Summary
Two C-suite executives at INSMED Inc sold shares in early April, generating $4.06M in open-market proceeds. CEO Lewis William also exercised options and sold a small portion of shares for $127K, part of a broader insider selling cluster totaling $4.4M in the last 30 days.
Key Financial Metrics
Key Facts
- Chief Operating Officer Adsett Roger sold 6,700 shares at $163.18 for $1.10M on 2026-04-01
- Chief Legal Officer Smith Michael Alexander sold 19,600 shares at $150.98 for $2.96M on 2026-03-30
- CEO Lewis William exercised options and sold 787 shares for $127,281 on 2026-04-06
- Total open-market insider sales in the 7-day cluster: $4.06M; $4.4M over the past 30 days
- Total insider selling represents 0.012% of the $35.2B market cap, but is concentrated among top executives
Financial Impact
$4.06M in net insider selling over 7 days, with $4.4M in total sales over the past 30 days
Risk Factors
- Perceived lack of confidence from top executives could erode investor sentiment
- Risk of follow-on selling by other insiders or institutions
Market Snapshot
Investment Themes
Documents Analyzed
This report is based on 1 SEC document filed with EDGAR.
| Document | Accession Number |
|---|---|
| CLUSTER Data (Synthetic) | cluster-INSM-1775680923566 |
Filters
| Type | Now | ||||
|---|---|---|---|---|---|
Aug 19, 2026 6w ago | Insider Cluster | $130.66 $119.92 | ▼ −8.22% | ▼ −6.70% | $111.12 (−14.95%) |
Aug 12, 2026 7w ago | Insider Cluster | $126.33 $129.41 | ▲ +2.44% | ▲ +4.19% | $111.12 (−12.04%) |
Aug 6, 2026 8w ago | 8-K | $132.55 $126.68 | ▼ −4.43% | ▼ −5.03% | $111.12 (−16.17%) |
Jul 24, 2026 10w ago | Institutional Cluster | $106.92 $125.77 | ▲ +17.63% | ▲ +14.00% | $111.12 (+3.93%) |
Jul 21, 2026 10w ago | ANALYST-UPGRADE | $108.62 $128.46 | ▲ +18.27% | ▲ +15.70% | $111.12 (+2.30%) |
Jul 16, 2026 11w ago | 8-K | $107.46 $126.33 | ▲ +17.56% | ▲ +13.94% | $111.12 (+3.41%) |
Jun 26, 2026 14w ago | Insider Cluster | $104.74 $106.92 | ▲ +2.08% | ▲ +2.36% | $111.12 (+6.09%) |
Jun 5, 2026 17w ago | Insider Cluster | $94.17 $111.54 | ▲ +18.45% | ▲ +16.81% | $111.12 (+18.00%) |
Jun 5, 2026 17w ago | Insider Cluster | $94.17 $111.54 | ▲ +18.45% | ▲ +16.81% | $111.12 (+18.00%) |
May 15, 2026 19w ago | S-3ASR | $107.15 $95.52 | ▼ −10.85% | ▼ −12.44% | $111.12 (+3.71%) |
US Market Status
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