12 insiders reported 69 Form 4 transactions for Ambiq Micro, Inc. (AMBQ) over the past 18 months (most recent 2026-08-18). Recent activity: Hanson Scott McLean (Chief Technology Officer) Buy 7,000 shares, Esaka Fumihide (Chief Executive Officer) Buy 13,500 shares, Hanson Scott McLean (Chief Technology Officer) Sell 800 shares, Esaka Fumihide (Chief Executive Officer) Sell 1,282 shares, Hanson Scott McLean (Chief Technology Officer) Sell 5,400 shares. Source: SEC Form 4.
| Date | Insider | Title | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-08-18 | Hanson Scott McLean | Chief Technology Officer | Buy | 7,000 | $56,840 |
| 2026-08-18 | Esaka Fumihide | Chief Executive Officer | Buy | 13,500 | $109,620 |
| 2026-08-18 | Hanson Scott McLean | Chief Technology Officer | Sell | 800 | $50,605 |
| 2026-08-18 | Esaka Fumihide | Chief Executive Officer | Sell | 1,282 | $81,132 |
| 2026-08-18 | Hanson Scott McLean | Chief Technology Officer | Sell | 5,400 | $347,793 |
| 2026-08-18 | Esaka Fumihide | Chief Executive Officer | Sell | 10,718 | $690,201 |
| 2026-08-18 | Hanson Scott McLean | Chief Technology Officer | Sell | 800 | $52,241 |
| 2026-08-18 | Esaka Fumihide | Chief Executive Officer | Sell | 1,500 | $97,893 |
| 2026-06-10 | Banks Bernard Bennett | 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 | ZHANG KER | Director | Buy | 4,957 | $0 |
| 2026-06-04 | Winzeler Jeffrey G | Chief Financial Officer | Buy | 5,952 | $99,994 |
| 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 | 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 | Esaka Fumihide | Chief Executive Officer | Buy | 60,000 | $487,200 |
| 2026-05-18 | Chen Sean Chihhsiang | President and COO | Buy | 55,685 | $327,428 |
| 2026-05-18 | Winzeler Jeffrey G | Chief Financial Officer | Sell | 25,918 | $1.8M |
| 2026-05-18 | Hanson Scott McLean | Chief Technology Officer | Sell | 3,900 | $267,631 |
Source: SEC Form 4 filings · as of 2026-08-18