Insider Profile · SEC Form 4 Activity · Trailing 90 Days
Wang David H
Over the trailing 90 days, Wang David H (Other at ACM Research, Inc.) traded $8.9M of stock (net selling $8.7M) in ACMR, per 16 SEC Form 4 transactions.
- Role
- Other
- Companies
- ACMR
- Window
- Trailing 90 days · 16 transactions · CIK 1721580
- Net activity
- −$8.7M ($100K bought · $8.8M sold)
By Company (Trailing 90 Days)
| Symbol | Company | Txns | Bought | Sold | Net |
|---|---|---|---|---|---|
| ACMR | ACM Research, Inc. | 16 | $100K | $8.8M | −$8.7M |
Transactions (16)
| Date | Symbol | Type | Shares | Value | Description |
|---|---|---|---|---|---|
| 2026-06-04 | ACMR | Sell | 40.0K | $0 | Exercise or conversion of derivative security |
| 2026-06-04 | ACMR | Sell | 826 | $73K | Open market or private sale |
| 2026-06-04 | ACMR | Sell | 8.6K | $748K | Open market or private sale |
| 2026-06-04 | ACMR | Sell | 11.0K | $946K | Open market or private sale |
| 2026-06-04 | ACMR | Sell | 17.5K | $1.5M | Open market or private sale |
| 2026-06-04 | ACMR | Sell | 2.1K | $173K | Open market or private sale |
| 2026-06-04 | ACMR | Buy | 40.0K | $40K | Exercise or conversion of derivative security |
| 2026-06-03 | ACMR | Sell | 60.0K | $0 | Exercise or conversion of derivative security |
| 2026-06-03 | ACMR | Sell | 1.2K | $110K | Open market or private sale |
| 2026-06-03 | ACMR | Sell | 9.9K | $901K | Open market or private sale |
| 2026-06-03 | ACMR | Sell | 32.5K | $2.9M | Open market or private sale |
| 2026-06-03 | ACMR | Buy | 60.0K | $60K | Exercise or conversion of derivative security |
| 2026-06-03 | ACMR | Sell | 4.3K | $377K | Open market or private sale |
| 2026-06-03 | ACMR | Sell | 6.3K | $560K | Open market or private sale |
| 2026-06-03 | ACMR | Sell | 5.8K | $540K | Open market or private sale |
| 2026-05-13 | ACMR | Buy | 6.2K | $0 | Grant, award or other acquisition |
Activity shown covers the trailing 90 days of SEC Form 4 filings. "Buy" and "sell" follow the SEC acquired/disposed codes and include compensation events (grants, option exercises, tax withholding) unless noted. Historical fact, not investment advice.
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