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.
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
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
Investment Themes
Documents Analyzed
This report is based on 1 SEC document filed with EDGAR.
| Document | Accession Number |
|---|---|
| CLUSTER Data (Synthetic) | cluster-ACLS-1779483929030 |
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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