12 insiders reported 110 Form 4 transactions for Ambiq Micro, Inc. (AMBQ) over the past 18 months (most recent 2026-09-17). Recent activity: Hanson Scott McLean (Chief Technology Officer) Sell 1,953 shares, Hanson Scott McLean (Chief Technology Officer) Buy 7,000 shares, Hanson Scott McLean (Chief Technology Officer) Sell 4,947 shares, Hanson Scott McLean (Chief Technology Officer) Sell 100 shares, Esaka Fumihide (Chief Executive Officer) Buy 13,500 shares. Source: SEC Form 4.
| Date | Insider | Title | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-09-17 | Hanson Scott McLean | Chief Technology Officer | Sell | 1,953 | $116,270 |
| 2026-09-17 | Hanson Scott McLean | Chief Technology Officer | Buy | 7,000 | $56,840 |
| 2026-09-17 | Hanson Scott McLean | Chief Technology Officer | Sell | 4,947 | $299,573 |
| 2026-09-17 | Hanson Scott McLean | Chief Technology Officer | Sell | 100 | $6,100 |
| 2026-09-15 | Esaka Fumihide | Chief Executive Officer | Buy | 13,500 | $109,620 |
| 2026-09-15 | Esaka Fumihide | Chief Executive Officer | Buy | 50,000 | $630,000 |
| 2026-09-15 | Chen Sean Chihhsiang | President and COO | Buy | 15,000 | $121,800 |
| 2026-09-15 | ZHANG KER | Director | Sell | 9,100 | $576,809 |
| 2026-09-15 | Esaka Fumihide | Chief Executive Officer | Sell | 42,083 | $2.7M |
| 2026-09-15 | Chen Sean Chihhsiang | President and COO | Sell | 2,600 | $154,346 |
| 2026-09-15 | Esaka Fumihide | Chief Executive Officer | Sell | 7,917 | $505,566 |
| 2026-09-15 | Chen Sean Chihhsiang | President and COO | Sell | 11,000 | $662,618 |
| 2026-09-15 | Chen Sean Chihhsiang | President and COO | Sell | 1,400 | $85,166 |
| 2026-09-15 | Esaka Fumihide | Chief Executive Officer | Sell | 3,785 | $225,444 |
| 2026-09-15 | Esaka Fumihide | Chief Executive Officer | Sell | 9,615 | $582,171 |
| 2026-09-15 | Esaka Fumihide | Chief Executive Officer | Sell | 100 | $6,100 |
| 2026-09-15 | ZHANG KER | Director | Sell | 900 | $57,552 |
| 2026-09-09 | ZHANG KER | Director | Sell | 185 | $10,530 |
| 2026-09-09 | ZHANG KER | Director | Buy | 1,785 | $10,496 |
| 2026-09-09 | Chen Sean Chihhsiang | President and COO | Buy | 15,000 | $121,800 |
| 2026-09-09 | Chen Sean Chihhsiang | President and COO | Sell | 12,874 | $734,933 |
| 2026-09-09 | Chen Sean Chihhsiang | President and COO | Sell | 2,126 | $122,625 |
| 2026-09-02 | Esaka Fumihide | Chief Executive Officer | Sell | 5,501 | $317,709 |
| 2026-09-02 | Esaka Fumihide | Chief Executive Officer | Buy | 13,500 | $109,620 |
| 2026-09-02 | Esaka Fumihide | Chief Executive Officer | Sell | 5,899 | $335,453 |
Source: SEC Form 4 filings · as of 2026-09-17