No actionable signal. The cluster is too small to move the stock and the CMO's sales are consistent with option exercise/tax planning. Monitor next 8-K or earnings for any fundamental catalyst, but this filing alone does not warrant a trade.
Price Chart
Executive Summary
Two senior Alkermes executives (EVP/CLO and EVP R&D/CMO) sold a combined $521K in open-market shares over a 3-day window. The CMO's sales followed derivative exercises, suggesting a tax/vesting-driven pattern rather than a purely bearish signal. At 0.0065% of Alkermes' $8.0B market cap, the dollar value is trivial and well below the 0.1% materiality threshold for insider clusters. This is a routine, non-informational cluster — no actionable signal for traders.
Key Financial Metrics
Key Facts
- Two senior executives sold shares totaling $521K in a 3-day window
- CMO Hopkinson sold 9K shares at $46.99 after exercising 10K options at $24.59 and $0 — typical tax/vesting pattern
- CLO Gaffin sold 2K shares at $48.01 — a small, likely routine sale
- Total sales represent 0.0065% of Alkermes' $8.0B market cap — far below the 0.1% materiality threshold
- No insider buying in the cluster to offset the sales
Financial Impact
Total insider sales of $521K represent 0.0065% of market cap — economically trivial
Risk Factors
- Insider sales could accelerate if the stock continues to rise, but current volume is immaterial
- No buying activity to offset the sales — a lack of bullish insider conviction
Market Snapshot
Investment Themes
Documents Analyzed
This report is based on 1 SEC document filed with EDGAR.
| Document | Accession Number |
|---|---|
| CLUSTER Data (Synthetic) | cluster-ALKS-1788476477349 |
Filters
| Type | Now | ||||
|---|---|---|---|---|---|
Sep 16, 2026 16d ago | 8-K | $46.07 $42.13 | ▼ −8.55% | ▼ −11.12% | $41.60 (−9.70%) |
Sep 3, 2026 28d ago | Insider Cluster | $46.10 $45.83 | ▼ −0.59% | ▲ +0.62% | $41.60 (−9.76%) |
Aug 3, 2026 8w ago | Insider Cluster | $49.67 $49.21 | ▲ +0.93% | ▲ +0.83% | $41.60 (+16.25%) |
Aug 3, 2026 8w ago | Insider Cluster | $49.67 $49.21 | ▼ −0.93% | ▼ −0.83% | $41.60 (−16.25%) |
Aug 3, 2026 8w ago | Insider Cluster | $49.67 $49.21 | ▼ −0.93% | ▼ −0.83% | $41.60 (−16.25%) |
Jul 28, 2026 9w ago | 8-K | $50.50 $49.53 | ▲ +1.92% | ▲ +4.19% | $41.60 (+17.62%) |
Jul 8, 2026 12w ago | 8-K | $54.29 $51.60 | ▼ −4.95% | ▼ −5.82% | $41.60 (−23.37%) |
Jul 6, 2026 12w ago | Insider Cluster | $55.14 $51.94 | ▼ −5.80% | ▼ −6.29% | $41.60 (−24.56%) |
Jun 4, 2026 17w ago | Insider Cluster | $42.80 $44.28 | ▲ +3.46% | ▲ +2.89% | $41.60 (−2.80%) |
Jun 1, 2026 17w ago | Insider Cluster | $41.19 $44.29 | ▲ +7.53% | ▲ +10.50% | $41.60 (+1.00%) |
US Market Status
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