Five C-suite insiders at INSMED Inc, including the CEO and CFO, collectively sold $1.75M in open-market sales over a 7-day window. The total value is ~0.008% of the $22.7B market cap, making the cluster economically trivial and consistent with routine portfolio diversification or tax planning rather than a bearish signal.
Price Chart
Executive Summary
Five C-suite insiders at INSMED Inc, including the CEO and CFO, collectively sold $1.75M in open-market sales over a 7-day window. The total value is ~0.008% of the $22.7B market cap, making the cluster economically trivial and consistent with routine portfolio diversification or tax planning rather than a bearish signal.
Key Financial Metrics
Key Facts
- 5 insiders sold a total of $1.75M in open-market transactions from May 27 to June 3, 2026.
- CEO Lewis William sold $778K; CFO Sara Bonstein sold $246K; COO Roger Adsett sold $242K; CMO Martina Flammer sold $262K; CLO Michael Smith sold $221K.
- Total sales represent ~0.008% of INSM's $22.7B market cap — well below the 0.1% materiality threshold.
- All sales occurred at ~$102.27 per share, suggesting a coordinated window rather than opportunistic timing.
- Prior 30-day insider activity shows $3.2M in total sells, consistent with ongoing routine selling patterns.
Financial Impact
Insider sales of $1.75M represent ~0.008% of market cap — immaterial.
Risk Factors
- No material risk identified from this cluster; sales are too small to signal distress.
- Historical performance on INSM reports shows poor predictive accuracy (0% win rate T+20), but this cluster is too small to drive meaningful price action regardless.
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-1780690693321 |
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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