Feng Lisa — SEC Form 4 filings
SEC reporting owner CIK 1779777. 5 Form 4 filings on record with FilingPulse; latest filed 2026-03-09.
Transaction summary — filings shown
Covers all 5 filings on record, filed 2024-03-01 to 2026-03-09. 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): 9 legs across 5 filings — 97,500 shares, $3,438,240 total (shares × price as filed).
- Other reported legs (grants, option exercises, tax withholding, gifts, derivative-security transactions, …): 14.
- Largest priced transaction: sale of 14,800 shares @ $46.07 ($681,836) in ACM Research, Inc., filed 2026-03-09.
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) | See remarks | 5 | — | 9 legs · 97,500 sh · $3,438,240 | 14 |
Form 4 filings — Feng Lisa
| Filed | Form | Issuer | Reported transactions | Source |
|---|---|---|---|---|
| 2026-03-09 | 4 | ACM Research, Inc. (ACMR) | Option exercise (M): 15,000 @ $4.55 · Sale (S): 8,050 @ $49.81 · Sale (S): 6,950 @ $50.24 · Option exercise (M): 15,000 @ $4.55 · Sale (S): 14,800 @ $46.07 · Sale (S): 200 @ $46.58 · +2 more | EDGAR |
| 2025-11-14 | 4 | ACM Research, Inc. (ACMR) | Option exercise (M): 15,000 @ $5.60 · Sale (S): 15,000 @ $32.76 · Option exercise (M): 15,000 @ $5.60 · Sale (S): 15,000 @ $33.77 · Option exercise (M): 15,000 (derivative) @ $0 · Option exercise (M): 15,000 (derivative) @ $0 | EDGAR |
| 2025-07-09 | 4 | ACM Research, Inc. (ACMR) | Option exercise (M): 15,000 @ $5.60 · Sale (S): 15,000 @ $28 · Option exercise (M): 15,000 (derivative) @ $0 | EDGAR |
| 2025-06-26 | 4 | ACM Research, Inc. (ACMR) | Option exercise (M): 15,000 @ $5.60 · Sale (S): 15,000 @ $26 · Option exercise (M): 15,000 (derivative) @ $0 | EDGAR |
| 2024-03-01 | 4 | ACM Research, Inc. (ACMR) | Option exercise (M): 7,500 @ $5.60 · Sale (S): 7,500 @ $25.20 · Option exercise (M): 7,500 (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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