12 insiders reported 60 Form 4 transactions for Ambiq Micro, Inc. (AMBQ) over the past 18 months (most recent 2026-06-10). Recent activity: ZHANG KER (Director) Buy 4,957 shares, TAUTGES JOSEPH A (Director) Buy 4,957 shares, Chen Timothy (Director) Buy 4,957 shares, HSIEH Wen Hsuan (Director) Buy 4,957 shares, Banks Bernard Bennett (Director) Buy 4,957 shares. Source: SEC Form 4.
| Date | Insider | Title | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-06-10 | ZHANG KER | Director | Buy | 4,957 | $0 |
| 2026-06-10 | TAUTGES JOSEPH A | Director | Buy | 4,957 | $0 |
| 2026-06-10 | Chen Timothy | Director | Buy | 4,957 | $0 |
| 2026-06-10 | HSIEH Wen Hsuan | Director | Buy | 4,957 | $0 |
| 2026-06-10 | Banks Bernard Bennett | Director | Buy | 4,957 | $0 |
| 2026-05-29 | Chen Timothy | Director | Buy | 70,592 | $0 |
| 2026-05-29 | Chen Timothy | Director | Sell | 22,414 | $1.8M |
| 2026-05-29 | Chen Timothy | Director | Sell | 24,248 | $1.9M |
| 2026-05-29 | Chen Timothy | Director | Sell | 20,666 | $1.7M |
| 2026-05-29 | Chen Timothy | Director | Sell | 3,264 | $266,244 |
| 2026-05-18 | Esaka Fumihide | Chief Executive Officer | Buy | 60,000 | $487,200 |
| 2026-05-18 | Winzeler Jeffrey G | Chief Financial Officer | Buy | 26,000 | $436,800 |
| 2026-05-18 | Hanson Scott McLean | Chief Technology Officer | Buy | 10,200 | $82,824 |
| 2026-05-18 | Chen Sean Chihhsiang | President and COO | Buy | 55,685 | $327,428 |
| 2026-05-18 | Hanson Scott McLean | Chief Technology Officer | Sell | 3,900 | $267,631 |
| 2026-05-18 | Winzeler Jeffrey G | Chief Financial Officer | Sell | 25,918 | $1.8M |
| 2026-05-18 | Esaka Fumihide | Chief Executive Officer | Sell | 60,000 | $4.2M |
| 2026-05-18 | Chen Sean Chihhsiang | President and COO | Sell | 32,351 | $2.3M |
| 2026-05-18 | Winzeler Jeffrey G | Chief Financial Officer | Sell | 82 | $5,793 |
| 2026-05-18 | Hanson Scott McLean | Chief Technology Officer | Sell | 6,100 | $424,521 |
| 2026-05-18 | Esaka Fumihide | Chief Executive Officer | Buy | 45,463 | $369,160 |
| 2026-05-18 | Chen Sean Chihhsiang | President and COO | Sell | 23,334 | $1.7M |
| 2026-05-18 | Winzeler Jeffrey G | Chief Financial Officer | Buy | 5,952 | $99,994 |
| 2026-05-18 | Hanson Scott McLean | Chief Technology Officer | Sell | 200 | $14,100 |
| 2026-05-18 | Esaka Fumihide | Chief Executive Officer | Buy | 14,537 | $183,166 |
Source: SEC Form 4 filings · as of 2026-06-10