The level of selling is minimal relative to company size and appears to be routine portfolio management; no immediate concern for traders, but continued selling in coming weeks should be monitored.
Price Chart
Executive Summary
Seven Alnylam Pharmaceuticals insiders executed trades over the past week, with three C-suite executives selling a combined $257,499 in shares on the open market, while five executives received non-cash stock awards totaling 27,070 shares. The sales were small in magnitude relative to the company's $42.5B market cap.
Key Financial Metrics
Key Facts
- Three C-suite executives (CSO, CCO, CFO, Chief R&D) sold shares in open-market transactions totaling $257,499 over four days.
- CEO Yvonne Greenstreet and four other executives received non-cash stock awards totaling 27,070 shares, valued at $0 in transaction value.
- All open-market sales occurred at prices between $316.55 and $321.81 per share.
- Total dollar value of open-market sales represents just 0.0006% of Alnylam's $42.5B market cap.
- No insider purchases were recorded in the cluster.
Financial Impact
$257,499 in open-market insider sales over 4 days, plus $0 in non-cash awards
Risk Factors
- Perception of lack of confidence if selling continues ahead of key events (e.g., earnings, clinical data).
- Concentration of sales among R&D and commercial leadership could raise questions if not part of a 10b5-1 plan.
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-ALNY-1772831534029 |
Filters
| Type | Now | ||||
|---|---|---|---|---|---|
Aug 17, 2026 6w ago | Court Ruling | $224.60 $238.27 | ▲ +6.09% | ▲ +8.06% | $226.93 (+1.04%) |
Jul 30, 2026 9w ago | 8-K | $205.48 $236.56 | ▼ −15.13% | ▼ −11.16% | $226.93 (−10.44%) |
Jul 29, 2026 9w ago | Institutional Cluster | $286.62 $239.00 | ▼ −16.61% | ▼ −21.63% | $226.93 (−20.83%) |
Mar 3, 2026 30w ago | Insider Cluster | $318.65 $330.87 | ▲ +3.83% | ▲ +8.24% | $226.93 (−28.79%) |
Mar 3, 2026 30w ago | Insider Cluster | $318.65 $330.87 | ▲ +3.83% | ▲ +8.24% | $226.93 (−28.79%) |
Feb 28, 2026 30w ago | Institutional Cluster | $325.07 $316.09 | ▼ −2.76% | ▲ +5.18% | $226.93 (−30.19%) |
US Market Status
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