Dollar value is too small to warrant concern — this appears to be routine portfolio diversification and/or pre-planned 10b5-1 selling. Monitor upcoming earnings (2.02) or any material agreements (1.01) for potential catalysts, but this insider cluster alone is not actionable.
Price Chart
Executive Summary
Five Axcelis insiders sold a total of ~$956K in open-market sales over a 7-day window, representing ~0.02% of the company's $4.9B market cap. The sell cluster includes the EVP General Counsel, EVP of R&D, EVP Global Customer Operations, VP Corporate Controller, and a Director, but the aggregate dollar value is immaterial relative to company size. Per academic literature, cluster sells are typically liquidity/vesting-driven and carry little predictive signal.
Key Financial Metrics
Key Facts
- 5 insiders sold open-market shares totaling roughly $956K from May 20-27, 2026
- Total sales are ~0.02% of ACLS's $4.9B market cap — immaterial by proportionality standards
- Sellers include C-suite (EVP GC, EVP R&D, EVP Ops) and a Director — broad but small-dollar
- No open-market purchases reported in the cluster; net direction is selling
- Cluster sells are weakly predictive vs cluster buys per academic literature (Cohen et al.; Alldredge 2019)
Financial Impact
Total insider sales of ~$956K, or 0.02% of market cap
Risk Factors
- If insider selling accelerates to >0.5% of market cap in a concentrated window, signal would strengthen
Market Snapshot
Investment Themes
Documents Analyzed
This report is based on 1 SEC document filed with EDGAR.
| Document | Accession Number |
|---|---|
| CLUSTER Data (Synthetic) | cluster-ACLS-1780002346779 |
Filters
| Type | Now | ||||
|---|---|---|---|---|---|
Aug 9, 2026 7w ago | Institutional Cluster | $132.65 $119.57 | ▼ −9.86% | ▼ −8.95% | $147.77 (+11.40%) |
Jun 15, 2026 15w ago | Institutional Cluster | $191.60 $136.56 | ▼ −28.73% | ▼ −27.98% | $147.77 (−22.88%) |
Jun 4, 2026 17w ago | Insider Cluster | $147.16 $139.97 | ▼ −4.89% | ▼ −6.75% | $147.77 (+0.41%) |
May 28, 2026 18w ago | Insider Cluster | $150.41 $176.13 | ▲ +17.10% | ▲ +18.89% | $147.77 (−1.76%) |
May 26, 2026 18w ago | Insider Cluster | $157.91 $180.70 | ▲ +14.43% | ▲ +16.33% | $147.77 (−6.42%) |
May 22, 2026 19w ago | Insider Cluster | $164.27 $167.14 | ▲ +1.75% | ▲ +3.70% | $147.77 (−10.04%) |
May 21, 2026 19w ago | Insider Cluster | $156.94 $172.13 | ▲ +9.68% | ▲ +11.09% | $147.77 (−5.84%) |
May 15, 2026 20w ago | Insider Cluster | $149.56 $187.53 | ▲ +25.39% | ▲ +24.65% | $147.77 (−1.20%) |
May 15, 2026 20w ago | Insider Cluster | $146.24 $176.85 | ▲ +20.93% | ▲ +19.35% | $147.77 (+1.05%) |
May 15, 2026 20w ago | Insider Cluster | $146.24 $176.85 | ▲ +20.93% | ▲ +19.35% | $147.77 (+1.05%) |
US Market Status
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