Liu Tracy (CIK 1721299) reported 10 SEC Form 4 insider transactions across 1 companies over the past 18 months (most recent 2026-03-12). Recent activity: Buy ACMR (45,000 shares), Sell ACMR (32,216 shares), Sell ACMR (12,784 shares), Buy ACMR (15,000 shares), Sell ACMR (11,623 shares). Source: SEC Form 4.
| Date | Company | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-03-12 | ACM Research, Inc. (ACMR) | Director | Buy | 45,000 | $45,000 |
| 2026-03-12 | ACM Research, Inc. (ACMR) | Director | Sell | 32,216 | $1.5M |
| 2026-03-12 | ACM Research, Inc. (ACMR) | Director | Sell | 12,784 | $616,061 |
| 2026-03-12 | ACM Research, Inc. (ACMR) | Director | Buy | 15,000 | $15,000 |
| 2026-03-12 | ACM Research, Inc. (ACMR) | Director | Sell | 11,623 | $555,696 |
| 2026-03-12 | ACM Research, Inc. (ACMR) | Director | Sell | 3,377 | $162,940 |
| 2025-09-19 | ACM Research, Inc. (ACMR) | Director | Buy | 15,000 | $15,000 |
| 2025-09-19 | ACM Research, Inc. (ACMR) | Director | Sell | 15,000 | $495,000 |
| 2025-07-17 | ACM Research, Inc. (ACMR) | Director | Buy | 15,000 | $15,000 |
| 2025-07-17 | ACM Research, Inc. (ACMR) | Director | Sell | 15,000 | $450,000 |
Source: SEC Form 4 filings · as of 2026-03-12