Ambiq Micro, Inc (AMBQ) insider trading
Every open-market stock purchase and sale by Ambiq Micro, Inc executives, directors, large shareholders and members of Congress, from SEC Form 4 filings. Sector: Other.
Insider activity at a glance
- Fumihide Esaka (CEO) and 3 others sold $17.5M in the last 90 days.
- No open-market insider buys on record.
Last 12 months: insiders bought $0 (0 buys) and sold $34.4M (18 sales). Last close $65.46 on Sep 18, 2026.
Recent AMBQ insider trades
| Date | Insider | Trade | Value |
|---|---|---|---|
| Sep 15, 2026 | Fumihide Esaka (CEO) | Sold | $582K |
| Sep 15, 2026 | Scott McLean Hanson (CTO) | Sold | $300K |
| Sep 15, 2026 | Fumihide Esaka (CEO) | Sold | $225K |
| Sep 15, 2026 | Scott McLean Hanson (CTO) | Sold | $116K |
| Sep 15, 2026 | Fumihide Esaka (CEO) | Sold | $6.1K |
| Sep 15, 2026 | Scott McLean Hanson (CTO) | Sold | $6.1K |
| Sep 15, 2026 | Fumihide Esaka (CEO) | Bought (not open market) | — |
| Sep 15, 2026 | Scott McLean Hanson (CTO) | Bought (not open market) | — |
| Sep 14, 2026 | Sean Chihhsiang Chen (COO) | Sold | $663K |
| Sep 14, 2026 | Sean Chihhsiang Chen (COO) | Sold | $154K |
| Sep 14, 2026 | Sean Chihhsiang Chen (COO) | Sold | $85.2K |
| Sep 14, 2026 | Sean Chihhsiang Chen (COO) | Bought (not open market) | — |
| Sep 11, 2026 | Fumihide Esaka (CEO) | Sold | $2.7M |
| Sep 11, 2026 | Fumihide Esaka (CEO) | Bought (not open market) | $630K |
| Sep 11, 2026 | Ker Zhang (Insider) | Sold | $577K |
| Sep 11, 2026 | Fumihide Esaka (CEO) | Sold | $506K |
| Sep 11, 2026 | Ker Zhang (Insider) | Sold | $57.6K |
| Sep 11, 2026 | Fumihide Esaka (CEO) | Bought (not open market) | — |
| Sep 11, 2026 | Fumihide Esaka (CEO) | Bought (not open market) | — |
| Sep 4, 2026 | Sean Chihhsiang Chen (COO) | Sold | $735K |
| Sep 4, 2026 | Sean Chihhsiang Chen (COO) | Sold | $123K |
| Sep 4, 2026 | Ker Zhang (Insider) | Sold | $10.5K |
| Sep 4, 2026 | Ker Zhang (Insider) | Bought (not open market) | — |
| Sep 4, 2026 | Sean Chihhsiang Chen (COO) | Bought (not open market) | — |
| Sep 2, 2026 | Fumihide Esaka (CEO) | Sold | $544K |
Who's trading AMBQ
- Fumihide Esaka, CEO: sold $15.2M (18 sales), last Sep 15, 2026
- Scott McLean Hanson, CTO: sold $5.1M (12 sales), last Sep 15, 2026
- Sean Chihhsiang Chen, COO: sold $5.7M (7 sales), last Sep 14, 2026
- Ker Zhang, Insider: sold $645K (3 sales), last Sep 11, 2026
- Wen Hsuan HSIEH, Insider: other filings, last Jun 8, 2026
- Timothy Chen, Insider: sold $5.6M (4 sales), last Jun 8, 2026
- Bernard Bennett Banks, Insider: other filings, last Jun 8, 2026
- Joseph A Tautges, Insider: sold $242K (1 sale), last Jun 8, 2026
- Jeffrey G Winzeler, CFO: sold $1.8M (2 sales), last Jun 2, 2026
- Michele Kim Connors, General Counsel: sold $21.2K (2 sales), last Apr 2, 2026
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