The cluster is noise: option-exercise-related sales at trivial dollars. No bearish signal for ACMR. The 100% historical win rate on prior ACMR reports does not apply here — this is a non-event. Monitor upcoming 10-Q for fundamental trends; insider activity is not informative of near-term direction.
Price Chart
Executive Summary
Two insiders at ACM Research (C-suite level) executed routine option exercises and related same-day open-market sales totaling ~$282K over three days. The sales are typical for tax-cover or diversification after option vesting, representing only ~0.005% of the $6.0B market cap — a trivial economic signal. The exercises are non-cash events; the sales are liquidity-driven, not indicative of bearish sentiment.
Key Financial Metrics
Key Facts
- Two insiders — Cheav Sotheara (See remarks) and David H. Wang (See remarks) — exercised derivatives on June 3-5, 2026
- Non-cash exercises: 13,351 shares at $0 (6/4), 5,399 shares at $0 (6/5), plus 40,002 and 60,000 shares at $0 (Wang, 6/3-6/4)
- Open-market sales: combined ~$282K across 2-trading-day window (6/3-6/4)
- Sales equal ~0.0047% of ACMR's $6.0B market cap — well below the 0.1% noise threshold
- Stock trades at ~$83-88, near its 52-week range; analyst consensus is 86% bullish (12 of 14 Buy/Strong Buy)
Financial Impact
Total insider open-market selling of ~$282K on a $6B market cap (~0.005%) — economically negligible
Risk Factors
- No material risk from this cluster; the low dollar value makes it routine
- Future insider sales patterns could develop if the stock rallies further
Market Snapshot
Investment Themes
Documents Analyzed
This report is based on 1 SEC document filed with EDGAR.
| Document | Accession Number |
|---|---|
| CLUSTER Data (Synthetic) | cluster-ACMR-1780707657977 |
Filters
| Type | Now | ||||
|---|---|---|---|---|---|
Aug 22, 2026 5w ago | Insider Cluster | $77.35 $75.80 | ▼ −2.00% | ▼ −3.30% | $83.72 (+8.24%) |
Aug 8, 2026 7w ago | Institutional Cluster | $79.41 $77.20 | ▼ −2.78% | ▼ −1.87% | $83.72 (+5.43%) |
Aug 7, 2026 8w ago | 8-K | $83.80 $74.44 | ▼ −11.17% | ▼ −10.77% | $83.72 (−0.10%) |
Jul 18, 2026 10w ago | Institutional Cluster | $82.52 $85.64 | ▲ +3.78% | ▼ −0.34% | $83.72 (+1.45%) |
Jun 11, 2026 16w ago | Institutional Cluster | $91.70 $106.04 | ▲ +15.64% | ▲ +13.75% | $83.72 (−8.70%) |
Jun 6, 2026 16w ago | Insider Cluster | $80.57 $98.52 | ▲ +22.28% | ▲ +20.65% | $83.72 (+3.91%) |
May 29, 2026 17w ago | 8-K | $82.05 $126.89 | ▲ +54.65% | ▲ +55.95% | $83.72 (+2.04%) |
May 22, 2026 19w ago | 8-K | $73.35 $95.80 | ▲ +30.61% | ▲ +32.02% | $83.72 (+14.14%) |
May 15, 2026 19w ago | 8-K | $63.25 $91.18 | ▲ +44.16% | ▲ +42.58% | $83.72 (+32.36%) |
May 12, 2026 20w ago | 424B5 | $64.75 $91.70 | ▼ −41.62% | ▼ −42.23% | $83.72 (−29.30%) |
US Market Status
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