| Insider | Role | Shares | Value | Buys | Sells |
|---|---|---|---|---|---|
| Date | Ticker | Insider | Role | Type | Shares | Price | Value | Chg% | SEC |
|---|---|---|---|---|---|---|---|---|---|
| Insider | Role | Shares | Value | Buys | Sells |
|---|---|---|---|---|---|
| Date | Ticker | Insider | Role | Type | Shares | Price | Value | Chg% | SEC |
|---|---|---|---|---|---|---|---|---|---|
Director
1 company
Ker Zhang is Director at AMBQ. Ker Zhang's net worth is not public. Form 4 filings only show shares in the companies where this person is an insider; those holdings are worth an estimated $910K at current prices.
The AMBQ filings lean toward selling, a net 10,185 shares.
Ker Zhang has 4 Form 4 filings on record from July 2025 to September 2026, all as Director at Ambiq Micro (AMBQ), 2025–2026.
The 6 reported transactions were 3 open-market sales, 2 stock awards and 1 option exercise.
Counted by filing, the open-market trades come to no purchases and 2 sales worth about $645K.
The largest open-market sale was 10,000 shares of AMBQ at an average $63.44 on September 11, 2026, about $634K.
Neither of the two sales since April 2023 was marked as made under a Rule 10b5-1 trading plan.