ACMR Insider Trading Activity and SEC Form 4 Filings
Trump's trades in ACMR
From his financial disclosures
$30K+
2 purchases
$30K+
2 sales
Sale
Jul 29, 2026
Reported 55d later
$15K - $50K
Purchase
Mar 30, 2026
Reported 45d later
$15K - $50K
Sale
Feb 26, 2026
Reported 77d later
$15K - $50K
Purchase
Feb 2, 2026
Reported 101d later
$15K - $50K
Many orders in these accounts are placed by the account manager.
ACMR insider trading summary
Over the past 12 months, insiders at ACM Research, Inc. (ACMR) reported 44 sales worth $26.1M by 8 insiders and no open-market purchases on SEC Form 4. Net insider selling was $26.1M.
Latest ACMR insider buys and sells
| Date | Insider | Role | Type | Value |
|---|---|---|---|---|
| Aug 20, 2026 | Mark McKechnie | See Remarks | Sell | $2.4M (30,365 @ $77.45) |
| Aug 20, 2026 | Mark McKechnie | See Remarks | Sell | $873K (11,209 @ $77.89) |
| Aug 20, 2026 | Mark McKechnie | See Remarks | Sell | $1.0M (13,625 @ $76.34) |
| Aug 18, 2026 | Haiping Dun | Insider | Sell | $276K (3,400 @ $81.31) |
| Aug 18, 2026 | Haiping Dun | Insider | Sell | $33K (400 @ $82.17) |
| Aug 18, 2026 | Haiping Dun | Insider | Sell | $96K (1,200 @ $80.29) |
| Jun 5, 2026 | Sotheara Cheav | See remarks | Sell | $195K (2,384 @ $81.73) |
| Jun 5, 2026 | Sotheara Cheav | See remarks | Sell | $80K (968 @ $82.61) |
| Jun 5, 2026 | Sotheara Cheav | See remarks | Sell | $34K (400 @ $84.01) |
| Jun 5, 2026 | Sotheara Cheav | See remarks | Sell | $141K (1,647 @ $85.41) |
Source: SEC Form 4 filings. Open-market purchases (code P) and sales (code S) only; option exercises, grants and gifts are excluded.