ACM Research, Inc. (ACMR) has 7 SEC Form 4 insider filings on record in the last 90 days. Most recent filing: Sept. 10, 2026.
| Date | Insider | Value | Shares | Stake | Pre-planned | Links |
|---|---|---|---|---|---|---|
| Sept. 10, 2026 filed Sept. 8, 2026 | Wang David H See Remarks | — | 0 | 0% | Yes | |
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| Aug. 26, 2026 filed Aug. 12, 2026 | Pappis Charles C Director | $0 | 7,128 | 0% | No | |
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| Aug. 26, 2026 filed Aug. 12, 2026 | Liu Tracy Director | $0 | 7,128 | 0% | No | |
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| Aug. 26, 2026 filed Aug. 12, 2026 | Dun Haiping Director | $0 | 7,128 | 0% | No | |
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| Aug. 21, 2026 filed Aug. 20, 2026 | McKechnie Mark See Remarks | $3,189,142 | 165,597 | 0% | Yes | |
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Showing the 5 most recent of 7 filings in the last 90 days.
Form 4 is the filing company officers, directors and 10% shareholders must submit to the SEC within two business days of trading their own company's stock. Open-market purchases generally carry more signal than sales, which are often scheduled in advance. More on how this works.
Real-time Telegram alerts the moment a Form 4 is filed. Filings shown here are delayed by 72 hours.
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