Traders should monitor for potential downward pressure on ACMR shares, especially if this selling continues in next filings. The concentration of sales among executives immediately after option exercises may signal lack of conviction in near-term upside.
Price Chart
Executive Summary
ACM Research insiders executed a cluster of transactions over the past week, led by executive Feng Lisa and director Charles Pappis. The activity includes open-market sales totaling $1.3 million and derivative exercises with non-cash transactions valued at $350,650. The majority of the economic impact comes from selling activity by key insiders.
Key Financial Metrics
Key Facts
- Feng Lisa sold 22,850 shares in open-market transactions for $1,082,806
- Charles C. Pappis sold 5,000 shares for $250,450
- Total open-market sales by insiders: $1.33 million
- Derivative exercises by Feng Lisa and Pappis added $350,650 in non-cash value
- Total insider selling represents ~0.04% of $3.0B market cap
- All transactions occurred within a 2-day window, indicating coordinated timing
Financial Impact
$1.33 million in open-market sales by insiders, plus $350,650 in non-cash derivative exercises
Risk Factors
- Insider selling often precedes negative news or earnings misses
- Concentration of selling among executives increases signal strength
- Recent exercise and sale pattern may indicate profit-taking ahead of potential volatility
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-ACMR-1773088326519 |
Filters
| Type | Now | ||||
|---|---|---|---|---|---|
Aug 22, 2026 5w ago | Insider Cluster | $77.35 $75.80 | ▼ −2.00% | ▼ −3.30% | $84.07 (+8.69%) |
Aug 8, 2026 7w ago | Institutional Cluster | $79.41 $77.20 | ▼ −2.78% | ▼ −1.87% | $84.07 (+5.87%) |
Aug 7, 2026 8w ago | 8-K | $83.80 $74.44 | ▼ −11.17% | ▼ −10.77% | $84.07 (+0.32%) |
Jul 18, 2026 10w ago | Institutional Cluster | $82.52 $85.64 | ▲ +3.78% | ▼ −0.34% | $84.07 (+1.88%) |
Jun 11, 2026 16w ago | Institutional Cluster | $91.70 $106.04 | ▲ +15.64% | ▲ +13.75% | $84.07 (−8.32%) |
Jun 6, 2026 16w ago | Insider Cluster | $80.57 $98.52 | ▲ +22.28% | ▲ +20.65% | $84.07 (+4.34%) |
May 29, 2026 17w ago | 8-K | $82.05 $126.89 | ▲ +54.65% | ▲ +55.95% | $84.07 (+2.46%) |
May 22, 2026 19w ago | 8-K | $73.35 $95.80 | ▲ +30.61% | ▲ +32.02% | $84.07 (+14.61%) |
May 15, 2026 19w ago | 8-K | $63.25 $91.18 | ▲ +44.16% | ▲ +42.58% | $84.07 (+32.92%) |
May 12, 2026 20w ago | 424B5 | $64.75 $91.70 | ▼ −41.62% | ▼ −42.23% | $84.07 (−29.84%) |
US Market Status
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