This insider cluster is too small to warrant a trading response. Monitor for any material corporate events (earnings, pipeline updates) that could explain the sales, but the dollar amount is consistent with routine portfolio diversification.
Price Chart
Executive Summary
Two INSM insiders, including the CEO, sold a combined $1.41M in shares over June 22-25, 2026. The total represents only ~0.006% of the company's $23.2B market cap, making this a routine and immaterial event with no bearish signal.
Key Financial Metrics
Key Facts
- CEO Lewis William sold 12.1K shares at $102.34 for $1.24M on June 25, 2026
- Chief Legal Officer Smith Michael Alexander sold 1.8K shares at $95.82 for $173K on June 22, 2026
- Total insider sales of $1.41M represent ~0.006% of INSM's $23.2B market cap
- Insider sales are weak predictors per academic literature, especially at this trivial scale
- 97% of analysts rate INSM as Buy/Strong Buy, indicating strong fundamental sentiment
Financial Impact
Insider sales of $1.41M are negligible relative to $23.2B market cap
Risk Factors
- Insider sales could accelerate if insiders perceive downside, but current scale is immaterial
- Historical INSM reports have underperformed, suggesting caution on any bullish/bearish calls
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-1783024936952 |
Filters
| Type | Now | ||||
|---|---|---|---|---|---|
Aug 19, 2026 6w ago | Insider Cluster | $130.66 $119.92 | ▼ −8.22% | ▼ −6.70% | $109.99 (−15.82%) |
Aug 12, 2026 7w ago | Insider Cluster | $126.33 $129.41 | ▲ +2.44% | ▲ +4.19% | $109.99 (−12.93%) |
Aug 6, 2026 8w ago | 8-K | $132.55 $126.68 | ▼ −4.43% | ▼ −5.03% | $109.99 (−17.02%) |
Jul 24, 2026 10w ago | Institutional Cluster | $106.92 $125.77 | ▲ +17.63% | ▲ +14.00% | $109.99 (+2.87%) |
Jul 21, 2026 10w ago | ANALYST-UPGRADE | $108.62 $128.46 | ▲ +18.27% | ▲ +15.70% | $109.99 (+1.26%) |
Jul 16, 2026 11w ago | 8-K | $107.46 $126.33 | ▲ +17.56% | ▲ +13.94% | $109.99 (+2.35%) |
Jun 26, 2026 13w ago | Insider Cluster | $104.74 $106.92 | ▲ +2.08% | ▲ +2.36% | $109.99 (+5.01%) |
Jun 5, 2026 16w ago | Insider Cluster | $94.17 $111.54 | ▲ +18.45% | ▲ +16.81% | $109.99 (+16.80%) |
Jun 5, 2026 16w ago | Insider Cluster | $94.17 $111.54 | ▲ +18.45% | ▲ +16.81% | $109.99 (+16.80%) |
May 15, 2026 19w ago | S-3ASR | $107.15 $95.52 | ▼ −10.85% | ▼ −12.44% | $109.99 (+2.65%) |
US Market Status
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