Wang Jian (CIK 1721620) reported 6 SEC Form 4 insider transactions across 1 companies over the past 18 months (most recent 2025-09-19). Recent activity: Buy ACMR (30,000 shares), Sell ACMR (30,000 shares), Buy ACMR (30,000 shares), Sell ACMR (30,000 shares), Buy ACMR (30,000 shares). Source: SEC Form 4.
| Date | Company | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2025-09-19 | ACM Research, Inc. (ACMR) | See remarks | Buy | 30,000 | $168,000 |
| 2025-09-19 | ACM Research, Inc. (ACMR) | See remarks | Sell | 30,000 | $1.1M |
| 2025-08-26 | ACM Research, Inc. (ACMR) | See remarks | Buy | 30,000 | $168,000 |
| 2025-08-26 | ACM Research, Inc. (ACMR) | See remarks | Sell | 30,000 | $900,000 |
| 2025-08-26 | ACM Research, Inc. (ACMR) | See remarks | Buy | 30,000 | $168,000 |
| 2025-08-26 | ACM Research, Inc. (ACMR) | See remarks | Sell | 30,000 | $960,000 |
Source: SEC Form 4 filings · as of 2025-09-19