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 |
|---|---|---|---|---|---|---|
| 2026-03-06 | Chen Sean Chihhsiang President and COO | Grant or award | +64,246 | 120,275 | ||
| 2026-03-06 | Esaka Fumihide Chief Executive Officer | Grant or award | +160,616 | 391,189 | ||
| 2026-03-06 | Hanson Scott McLean Chief Technology Officer | Grant or award | +80,308 | 203,126 | ||
| 2026-03-06 | Winzeler Jeffrey G Chief Financial Officer | Grant or award | +41,728 | 94,395 | ||
| 2026-03-06 | Connors Michele Kim General Counsel | Grant or award | +32,123 | 61,365 | ||
| 2026-03-06 | Chen Sean Chihhsiang President and COO | Grant or award | +64,246 | 120,275 | ||
| 2026-03-06 | Esaka Fumihide Chief Executive Officer | Grant or award | +160,616 | 391,189 | ||
| 2026-03-06 | Hanson Scott McLean Chief Technology Officer | Grant or award | +80,308 | 203,126 | ||
| 2026-03-06 | Winzeler Jeffrey G Chief Financial Officer | Grant or award | +41,728 | 94,395 | ||
| 2026-02-18 | HSIEH Wen Hsuan Director | Option exercise | +238,931 | $12.60 | $3.0M | 633,920 |
| 2026-02-18 | HSIEH Wen Hsuan Director | Option exercise · Warrant (Right to Buy) | −238,931 | 0 | ||
| 2026-01-26 | Hanson Scott McLean Chief Technology Officer | Sale | −10,000 | $31.00 | $310K | 122,818 |
| 2026-01-26 | TAUTGES JOSEPH A Director | Sale | −7,800 | $31.00 | $242K | 48,746 |
| 2026-01-05 | Connors Michele Kim General Counsel | Grant or award | +23,759 | 23,759 | ||
| 2026-01-05 | Connors Michele Kim General Counsel | Grant or award | +5,483 | 29,242 | ||
| 2025-10-07 | Esaka Fumihide Chief Executive Officer | Option exercise | +53,660 | $5.88 | $316K | 230,573 |
| 2025-10-07 | Esaka Fumihide Chief Executive Officer | Option exercise · Stock Option (Right to Buy) | −53,660 | 0 | ||
| 2025-10-02 | Chen Sean Chihhsiang President and COO | Grant or award | +56,029 | 56,029 | ||
| 2025-10-02 | Esaka Fumihide Chief Executive Officer | Grant or award | +159,907 | 176,913 | ||
| 2025-10-02 | Hanson Scott McLean Chief Financial Officer | Grant or award | +83,819 | 132,818 |
Page 8 of 9 · 176 trades