The sale represents a small portion of typical director holdings and is likely part of a planned diversification strategy. Given the modest size and routine nature, traders should not interpret this as a negative signal. Monitor for actual execution of the sale in future Form 4 filings.
Price Chart
Executive Summary
Charles Pappis, a director at ACM Research, filed a Form 144 to notify intent to sell 5,000 shares of common stock. The shares were acquired via stock option exercise on March 5, 2026, and the sale was reported on April 17, 2026. This is a routine, relatively small insider transaction.
Key Facts
- Reporting person: Charles Pappis, Director
- Number of shares intended for sale: 5,000
- Shares are common stock acquired through option exercise on March 5, 2026
- Form filed on April 17, 2026
- No immediate sale occurred; this is an advance notice under Rule 144
Financial Impact
Approximately $250,485 based on the reported sale price of $50.097 per share (250485.00 / 5000)
Risk Factors
- Perception of insider selling could weigh on sentiment if combined with other negative catalysts
- Timing near potential earnings or lock-up expirations could increase scrutiny
Market Snapshot
Investment Themes
Documents Analyzed
This report is based on 3 SEC documents filed with EDGAR.
| Document | Accession Number |
|---|---|
| 144 Filing (Primary) | 0001950047-26-003586 |
| Document: 0001950047-26-003586-index.html | 0001950047-26-003586 |
| Document: 0001950047-26-003586.txt | 0001950047-26-003586 |
Filters
| Type | Now | ||||
|---|---|---|---|---|---|
Aug 22, 2026 5w ago | Insider Cluster | $77.35 $75.80 | ▼ −2.00% | ▼ −3.30% | $83.09 (+7.43%) |
Aug 8, 2026 7w ago | Institutional Cluster | $79.41 $77.20 | ▼ −2.78% | ▼ −1.87% | $83.09 (+4.63%) |
Aug 7, 2026 8w ago | 8-K | $83.80 $74.44 | ▼ −11.17% | ▼ −10.77% | $83.09 (−0.85%) |
Jul 18, 2026 10w ago | Institutional Cluster | $82.52 $85.64 | ▲ +3.78% | ▼ −0.34% | $83.09 (+0.69%) |
Jun 11, 2026 16w ago | Institutional Cluster | $91.70 $106.04 | ▲ +15.64% | ▲ +13.75% | $83.09 (−9.39%) |
Jun 6, 2026 16w ago | Insider Cluster | $80.57 $98.52 | ▲ +22.28% | ▲ +20.65% | $83.09 (+3.13%) |
May 29, 2026 17w ago | 8-K | $82.05 $126.89 | ▲ +54.65% | ▲ +55.95% | $83.09 (+1.27%) |
May 22, 2026 19w ago | 8-K | $73.35 $95.80 | ▲ +30.61% | ▲ +32.02% | $83.09 (+13.28%) |
May 15, 2026 19w ago | 8-K | $63.25 $91.18 | ▲ +44.16% | ▲ +42.58% | $83.09 (+31.37%) |
May 12, 2026 20w ago | 424B5 | $64.75 $91.70 | ▼ −41.62% | ▼ −42.23% | $83.09 (−28.32%) |
US Market Status
Subscribe to SecBot
Get Real-Time SEC Filing Intelligence
Comprehensive SEC filing analysis delivered the moment filings hit EDGAR. Sentiment scoring, impact analysis, and actionable insights for every material event.
Try SecBot Free Coming soon: SecBot Pro with alerts, watchlists, and API access