Wen Hsuan Hsieh
CIK 1835160 · View on SEC EDGAR ↗
Insider
First SEC filing: July 29, 2025 · Latest: June 10, 2026
On this page
Insider at
Insider transactions
0 buys (P)
0 sells (S)
Net:
$0
+ 4 non-open-market transactions below
last 12 months, based on the transactions shown below
Price change vs current quote, split-adjusted for corporate actions since the filing — not benchmarked, not annualized, not size-weighted
No open-market trades on record; showing all filings.
| Date | Ticker | Code | Shares | Price | Value | Owned after | Δ own | A/D | vs now |
|---|---|---|---|---|---|---|---|---|---|
| June 8, 2026 | AMBQ | A | 4,957 | — | — | 4,957 | — | — | (price as of 2026-08-21) |
| Sept. 14, 2022 | AMPX | A | 270,251 | — | — | 270,251 Direct | — | Acquired | (price as of 2026-08-21) |
| Sept. 14, 2021 | LIDR | A | 42,322 | — | — | 42,322 Direct | — | Acquired | (price as of 2026-08-21) |
| Sept. 14, 2021 | LIDR | A | 42,322 | — | — | 42,322 Direct | — | Acquired | (price as of 2026-08-21) |
P = Open-market purchase · S = Sale · A = Grant/award · M = Option exercise · G = Gift · F = Tax withholding
Insider transactions are not a recommendation; sales are often driven by liquidity or tax reasons.
Derivative holdings (Form 4 Table II)
Options, RSUs and convertible securities reported on Form 4 Table II.
| Date | Ticker | Security | Underlying | Exercise price | Expiration | Shares | A/D |
|---|---|---|---|---|---|---|---|
| Sept. 14, 2022 | AMPX | Stock Option (right to buy) | Common Stock (270,251) | $2.61 | April 13, 2032 | 270,251 | Acquired |
Exercise/conversion price is blank when not applicable (e.g. RSUs).
Initial ownership (Form 3) 4 holdings
Securities held when first becoming an insider, per SEC Form 3.
| Date | Ticker | Security | Shares | Ownership |
|---|---|---|---|---|
| July 29, 2025 | AMBQ | Series G Convertible Preferred Stock→ Common Stock (394,989) | 394,989 | Indirect |
| July 29, 2025 | AMBQ | Warrant (Right to Buy)→ Common Stock (238,931) | 238,931 | Indirect |
| Sept. 16, 2022 | AMPX | Common Stock | 100,000 | Indirect |
| Sept. 16, 2022 | AMPX | Warrants (right to buy)→ Common Stock (100,000) | 100,000 | Indirect |