ACLS AXCELIS TECHNOLOGIES INC
Price Chart
Executive Summary
Six ACLS insiders sold a total of ~$1.88M in open-market sales over a 7-day window, including three directors and three EVPs. The cluster is dominated by non-C-suite insiders (directors and EVPs), and the total value represents ~0.04% of the $4.7B market cap — well below the 0.1% materiality threshold. Per academic literature, insider sales clusters are weak signals (often liquidity-driven), and the dollar amount here is trivial relative to company size, making this a routine event with no actionable bearish read-through.
Key Financial Metrics
Actionable Insight
This insider sales cluster is routine and immaterial relative to ACLS's $4.7B market cap. No C-suite selling, no concentrated selling by any single insider, and the dollar amounts are trivial. Monitor upcoming quarterly earnings for any fundamental changes, but this cluster alone does not warrant a trading response.
Key Facts
- Six insiders sold shares in open-market transactions totaling ~$1.88M from May 14-21, 2026
- Total sales represent ~0.04% of ACLS's $4.7B market cap — well below the 0.1% materiality threshold
- No C-suite executives (CEO, CFO, COO) participated in open-market sales; sellers were directors and EVPs
- Four additional tax-withholding transactions (non-cash, $0 economic value) occurred on May 18, 2026
- Prior 30-day insider activity showed 6 sells totaling $1.6M, consistent with routine pattern
- Per Alldredge (2019), cluster sales are not more informative than non-cluster sales — likely liquidity/vesting driven
Financial Impact
Total open-market sales of ~$1.88M, or ~0.04% of market cap — immaterial
Risk Factors
- Insider sales could accelerate if insiders perceive headwinds in semi-cap equipment cycle
- No open-market purchases in the cluster — one-sided selling direction, though immaterial in size
Market Snapshot
Documents Analyzed
This report is based on 1 SEC document filed with EDGAR.
| Document | Accession Number |
|---|---|
| CLUSTER Data (Synthetic) | cluster-ACLS-1779483929030 |
Track record builds as more directional reports settle.
Filters
| Type | Now | ||||
|---|---|---|---|---|---|
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Jun 4, 2026
2d ago
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Insider Cluster
| — | awaiting T+5 | — | — |
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May 28, 2026
9d ago
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Insider Cluster
| — | awaiting T+5 | — | — |
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May 26, 2026
11d ago
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Insider Cluster
| — | awaiting T+5 | — | — |
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May 22, 2026
15d ago
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Insider Cluster
| — | awaiting T+5 | — | — |
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May 21, 2026
16d ago
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Insider Cluster
| — | awaiting T+5 | — | — |
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May 15, 2026
22d ago
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Insider Cluster
| — | awaiting T+5 | — | — |
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May 15, 2026
22d ago
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Insider Cluster
| $146.24 $164.27 | ▲ +12.33% | ▲ +10.71% | $147.16 (+0.63%) |
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May 15, 2026
22d ago
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Insider Cluster
| — | awaiting T+5 | — | — |
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May 6, 2026
4w ago
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Insider Cluster
| $171.00 $162.15 | ▲ +5.18% | ▲ +6.35% | $147.16 (+13.94%) |
US Market Status
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