SEC Form 4Coverage since Jun 3, 2026
$ACMR insider trading
Over the last 12 months, ACM Research insiders reported no purchases and 18 sales totaling $10.4M across SEC Form 4 filings. 100% of the activity was filed under pre-arranged 10b5-1 trading plans.
- Bought · 12m
- — 0 events
- Sold · 12m
- $10.4M 18 events
- Events · 12m
- 18 Form 4 filings, grouped
- Insiders · 12m
- 2 distinct reporters
- 10b5-1 share
- 100% pre-arranged plans
Side
Price · $ACMR · 12Mvia TradingView
Top insiders · 12m
Wang David HSee Remarks11× · $8.8M
Cheav SothearaSee remarks7× · $1.6M
All insider trades
18 events
| Date | Insider | Type | Shares | Avg price | Value | Δ stake | Marks |
|---|---|---|---|---|---|---|---|
| Jun 5, 2026 | Cheav SothearaSee remarks · O | ▼ Sale | 1,647 | $85.41 | $141K | -1.6% | plan |
| Jun 5, 2026 | Cheav SothearaSee remarks · O | ▼ Sale | 400 | $84.01 | $34K | -0.4% | plan |
| Jun 5, 2026 | Cheav SothearaSee remarks · O | ▼ Sale | 968 | $82.61 | $80K | -0.9% | plan |
| Jun 5, 2026 | Cheav SothearaSee remarks · O | ▼ Sale | 2,384 | $81.73 | $195K | -2.3% | plan |
| Jun 4, 2026 | Cheav SothearaSee remarks · O | ▼ Sale | 2,839 | $85.77 | $244K | -2.8% | plan |
| Jun 4, 2026 | Cheav SothearaSee remarks · O | ▼ Sale | 9,212 | $85.11 | $784K | -8.2% | plan |
| Jun 4, 2026 | Cheav SothearaSee remarks · O | ▼ Sale | 1,300 | $84.08 | $109K | -1.1% | plan |
| Jun 4, 2026 | Wang David HSee Remarks · O·D·10% | ▼ Sale | 826 | $87.91 | $73K | -0.1% | plan |
| Jun 4, 2026 | Wang David HSee Remarks · O·D·10% | ▼ Sale | 8,581 | $87.13 | $748K | -1.1% | plan |
| Jun 4, 2026 | Wang David HSee Remarks · O·D·10% | ▼ Sale | 10,992 | $86.07 | $946K | -1.3% | plan |
| Jun 4, 2026 | Wang David HSee Remarks · O·D·10% | ▼ Sale | 17,543 | $85.11 | $1.5M | -2.1% | plan |
| Jun 4, 2026 | Wang David HSee Remarks · O·D·10% | ▼ Sale | 2,060 | $83.86 | $173K | -0.2% | plan |
| Jun 3, 2026 | Wang David HSee Remarks · O·D·10% | ▼ Sale | 1,187 | $93.04 | $110K | -0.1% | plan |
| Jun 3, 2026 | Wang David HSee Remarks · O·D·10% | ▼ Sale | 5,843 | $92.38 | $540K | -0.7% | plan |
| Jun 3, 2026 | Wang David HSee Remarks · O·D·10% | ▼ Sale | 9,925 | $90.78 | $901K | -1.2% | plan |
| Jun 3, 2026 | Wang David HSee Remarks · O·D·10% | ▼ Sale | 32,450 | $89.84 | $2.9M | -3.8% | plan |
| Jun 3, 2026 | Wang David HSee Remarks · O·D·10% | ▼ Sale | 6,295 | $88.98 | $560K | -0.7% | plan |
| Jun 3, 2026 | Wang David HSee Remarks · O·D·10% | ▼ Sale | 4,300 | $87.57 | $377K | -0.5% | plan |
About Form 4
Corporate insiders — officers, directors and 10%+ owners — must report their trades to the SEC on Form 4 within two business days. We group each filing's transactions into one economic event (a laddered 10b5-1 sale is one event, not 25 rows), flag pre-arranged plans and late filings, and link every event to its AI-scored article in the $ACMR feed.