HSIEH Wen Hsuan — SEC Form 4 filings
SEC reporting owner CIK 1835160. 8 Form 4 filings on record with FilingPulse; latest filed 2026-06-10.
Transaction summary — filings shown
Covers all 8 filings on record, filed 2024-06-07 to 2026-06-10. 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): 2 legs across 1 filing — 413,146 shares, $7,620,033 total (shares × price as filed).
- Other reported legs (grants, option exercises, tax withholding, gifts, derivative-security transactions, …): 15.
- Largest priced transaction: sale of 282,500 shares @ $18.55 ($5,239,245) in Amprius Technologies, Inc., filed 2026-03-13.
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 |
|---|---|---|---|---|---|
| Amprius Technologies, Inc. (AMPX) | Director | 3 | — | 2 legs · 413,146 sh · $7,620,033 | 4 |
| Desktop Metal, Inc. (DM) | Director | 2 | — | — | 6 |
| Ambiq Micro, Inc. (AMBQ) | Director | 3 | — | — | 5 |
Form 4 filings — HSIEH Wen Hsuan
| Filed | Form | Issuer | Reported transactions | Source |
|---|---|---|---|---|
| 2026-06-10 | 4 | Ambiq Micro, Inc. (AMBQ) | Grant/award (A): 4,957 @ $0 | EDGAR |
| 2026-03-13 | 4 | Amprius Technologies, Inc. (AMPX) | Option exercise (M): 270,251 @ $2.61 · Sale (S): 282,500 @ $18.55 · Sale (S): 130,646 @ $18.22 · Option exercise (M): 270,251 (derivative) @ $2.61 | EDGAR |
| 2026-02-20 | 4 | Ambiq Micro, Inc. (AMBQ) | Option exercise (M): 238,931 @ $12.60 · Option exercise (M): 238,931 (derivative) @ $0 | EDGAR |
| 2025-07-31 | 4 | Ambiq Micro, Inc. (AMBQ) | Conversion (C): 394,989 · Conversion (C): 394,989 (derivative) @ $0 | EDGAR |
| 2025-06-17 | 4 | Amprius Technologies, Inc. (AMPX) | Grant/award (A): 44,444 @ $0 | EDGAR |
| 2025-04-04 | 4 | Desktop Metal, Inc. (DM) | Option exercise (M): 28,571 · Disposition to issuer (D): 42,538 · Option exercise (M): 28,571 (derivative) | EDGAR |
| 2024-06-10 | 4 | Desktop Metal, Inc. (DM) | Option exercise (M): 6,422 · Option exercise (M): 6,422 (derivative) @ $0 · Grant/award (A): 28,571 (derivative) @ $0 | EDGAR |
| 2024-06-07 | 4 | Amprius Technologies, Inc. (AMPX) | Grant/award (A): 125,000 @ $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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