CIK 0001500412 · Non-accelerated filer<br>Smaller reporting company<br>Emerging growth company
Ambiq Micro, Inc.
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- AMBQ
- Exchange
- NYSE
- Industry
- Semiconductors & Related Devices
- FY end
- Dec 31
- Incorporated
- DE
- Entity type
- operating
- EIN
- 271911389
- Phone
- (512) 879-2850
- Business address
- 6500 RIVER PLACE BOULEVARD, BUILDING 7, SUITE 200, AUSTIN, TX, 78730
- Open-market buys, last 90 days
- $0
- in 0 filings
- Open-market sales, last 90 days
- $20,736,302
- in 15 filings, $14.7M under 10b5-1 plans
Net −$20,736,302. Shares bought or sold at a price by officers, directors and 10% owners (Form 4 codes P and S). Grants, option exercises and tax withholding aren't counted.
Who's trading
90 days
- Esaka Fumihide −$11.6M Chief Executive Officer sold 30% of stake
- Hanson Scott McLean −$4.7M Chief Technology Officer sold 27% of stake
- Chen Sean Chihhsiang −$3.5M President and COO sold 36% of stake
- ZHANG KER −$645K Director sold 33% of stake
- Winzeler Jeffrey G −$380K Chief Financial Officer sold 5% of stake
| Date | Insider | Transaction | Shares | Price | Value | Owned after |
|---|---|---|---|---|---|---|
| 2026-08-14 | Hanson Scott McLean Chief Technology Officer | Option exercise · Stock Option (Right to Buy) 10b5-1 | −7,000 | 62,279 | ||
| 2026-06-08 | Banks Bernard Bennett Director | Grant or award | +4,957 | 4,957 | ||
| 2026-06-08 | HSIEH Wen Hsuan Director | Grant or award | +4,957 | 4,957 | ||
| 2026-06-08 | Chen Timothy Director | Grant or award | +4,957 | 52,575 | ||
| 2026-06-08 | TAUTGES JOSEPH A Director | Grant or award | +4,957 | 53,703 | ||
| 2026-06-08 | ZHANG KER Director | Grant or award | +4,957 | 28,766 | ||
| 2026-06-02 | Winzeler Jeffrey G Chief Financial Officer | Option exercise | +5,952 | $16.80 | $100K | 106,299 |
| 2026-06-02 | Winzeler Jeffrey G Chief Financial Officer | Option exercise · Stock Option (Right to Buy) | −5,952 | 104,953 | ||
| 2026-05-27 | Chen Timothy Director | Sale | −22,414 | $78.85 | $1.8M | 48,178 |
| 2026-05-27 | Chen Timothy Director | Sale | −24,248 | $79.72 | $1.9M | 23,930 |
| 2026-05-27 | Chen Timothy Director | Sale | −20,666 | $80.61 | $1.7M | 3,264 |
| 2026-05-27 | Chen Timothy Director | Sale | −3,264 | $81.57 | $266K | 0 |
| 2026-05-15 | Chen Sean Chihhsiang President and COO | Option exercise | +55,685 | $5.88 | $327K | 175,960 |
| 2026-05-15 | Chen Sean Chihhsiang President and COO | Sale | −32,351 | $70.53 | $2.3M | 143,609 |
| 2026-05-15 | Chen Sean Chihhsiang President and COO | Sale | −23,334 | $71.37 | $1.7M | 120,275 |
| 2026-05-15 | Chen Sean Chihhsiang President and COO | Option exercise · Stock Option (Right to Buy) | −55,685 | 1 | ||
| 2026-05-15 | Esaka Fumihide Chief Executive Officer | Option exercise | +45,463 | $8.12 | $369K | 436,652 |
| 2026-05-15 | Esaka Fumihide Chief Executive Officer | Option exercise | +14,537 | $12.60 | $183K | 451,189 |
| 2026-05-15 | Esaka Fumihide Chief Executive Officer | Option exercise · Stock Option (Right to Buy) | −45,463 | 99,007 | ||
| 2026-05-15 | Esaka Fumihide Chief Executive Officer | Option exercise · Stock Option (Right to Buy) | −7,936 | 114,007 |
Page 6 of 9 · 176 trades