Liu Tracy — SEC Form 4 filings
SEC reporting owner CIK 1721299. 7 Form 4 filings on record with FilingPulse; latest filed 2026-08-26.
Transaction summary — filings shown
Covers all 7 filings on record, filed 2024-03-01 to 2026-08-26. Counts and totals are arithmetic on values as filed — descriptive data, not a recommendation.
- Open-market purchases (code P, non-derivative): none reported.
- Open-market sales (code S, non-derivative): 7 legs across 4 filings — 102,500 shares, $4,110,782 total (shares × price as filed).
- Other reported legs (grants, option exercises, tax withholding, gifts, derivative-security transactions, …): 14.
- Largest priced transaction: sale of 32,216 shares @ $47.06 ($1,516,085) in ACM Research, Inc., filed 2026-03-12.
By issuer — same filings
Open-market purchase/sale legs on non-derivative securities, grouped by issuer. Role is as filed on the newest filing for that issuer. Dollar totals cover priced legs only (shares × price as filed). Ordered by priced transaction value, largest first.
| Issuer | Role (as filed) | Filings | Purchases (P) | Sales (S) | Other legs |
|---|---|---|---|---|---|
| ACM Research, Inc. (ACMR) | Director | 7 | — | 7 legs · 102,500 sh · $4,110,782 | 14 |
Form 4 filings — Liu Tracy
| Filed | Form | Issuer | Reported transactions | Source |
|---|---|---|---|---|
| 2026-08-26 | 4 | ACM Research, Inc. (ACMR) | Grant/award (A): 6,400 (derivative) @ $0 · Grant/award (A): 728 (derivative) @ $0 | EDGAR |
| 2026-03-12 | 4 | ACM Research, Inc. (ACMR) | Option exercise (M): 45,000 @ $1 · Sale (S): 32,216 @ $47.06 · Sale (S): 12,784 @ $48.19 · Option exercise (M): 15,000 @ $1 · Sale (S): 11,623 @ $47.81 · Sale (S): 3,377 @ $48.25 · +2 more | EDGAR |
| 2025-09-19 | 4 | ACM Research, Inc. (ACMR) | Option exercise (M): 15,000 @ $1 · Sale (S): 15,000 @ $33 · Option exercise (M): 15,000 (derivative) @ $0 | EDGAR |
| 2025-08-14 | 4 | ACM Research, Inc. (ACMR) | Grant/award (A): 20,000 (derivative) @ $0 | EDGAR |
| 2025-07-17 | 4 | ACM Research, Inc. (ACMR) | Option exercise (M): 15,000 @ $1 · Sale (S): 15,000 @ $30 · Option exercise (M): 15,000 (derivative) @ $0 | EDGAR |
| 2024-08-20 | 4 | ACM Research, Inc. (ACMR) | Grant/award (A): 20,000 (derivative) @ $0 | EDGAR |
| 2024-03-01 | 4 | ACM Research, Inc. (ACMR) | Option exercise (M): 12,500 @ $5.60 · Sale (S): 12,500 @ $25.20 · Option exercise (M): 12,500 (derivative) @ $0 | EDGAR |
FilingPulse's Form 4 archive currently extends back to 2024-01-11 and is expanding backward through EDGAR history — earlier filings by this insider may not be indexed yet. Names and roles are shown as filed.
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