C
$ Value
—
Shares
394,989
Price
—
Filed
Jul 31
Insider
Name
HSIEH Wen Hsuan
Title
—
CIK
0001835160
Roles
Director
Transaction Details
Transaction Date
2025-07-31
Code
C
Table
Non-Derivative
Ownership
Indirect
Equity Swap
No
Shares After
394,989
Footnotes
The Series G Convertible Preferred Stock automatically converted into Common Stock on a one-for-one basis immediately prior to the closing of the Issuer's initial public offering of common stock and had no expiration date. | The Reporting Person exercises sole voting and dispositive control over the shares held by Matter Venture Partners Fund I, L.P.
Filing Info
HSIEH Wen Hsuan's History
| Date | Ticker | Type | Value |
|---|---|---|---|
| 2026-03-12 | AMPX | M | $705K |
| 2026-03-12 | AMPX | ▼ | $5.2M |
| 2026-03-12 | AMPX | ▼ | $2.4M |
| 2026-03-12 | AMPX | M | $705K |
| 2026-02-18 | AMBQ | M | $3.0M |
| 2026-02-18 | AMBQ | M | $0 |
| 2025-07-31 | AMBQ | C | — |
| 2025-07-31 | AMBQ | C | $0 |
| 2025-06-13 | AMPX | A | $0 |
Other Insiders at AMBQ (90d)
| Insider | Bought | Sold | Last |
|---|---|---|---|
|
Winzeler Jeffrey G
Chief Financial Officer
|
— | — | 2026-03-06 |
| TAUTGES JOSEPH A | — | $242K | 2026-01-26 |
| HSIEH Wen Hsuan | — | — | 2026-02-18 |
|
Hanson Scott McLean
Chief Technology Officer
|
— | $310K | 2026-03-06 |
|
Esaka Fumihide
Chief Executive Officer
|
— | — | 2026-03-06 |
|
Chen Sean Chihhsiang
President and COO
|
— | — | 2026-03-06 |
|
Connors Michele Kim
General Counsel
|
— | $21K | 2026-04-02 |