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 |
|---|---|---|---|---|---|---|
| 2026-10-05 | Chen Sean Chihhsiang President and COO | Sale 10b5-1 | −1,797 | $67.29 | $121K | 107,168 |
| 2026-10-05 | Chen Sean Chihhsiang President and COO | Sale 10b5-1 | −800 | $68.08 | $54K | 106,368 |
| 2026-10-05 | Chen Sean Chihhsiang President and COO | Sale 10b5-1 | −100 | $69.51 | $7K | 106,268 |
| 2026-10-02 | Chen Sean Chihhsiang President and COO | Sale 10b5-1 | −2,492 | $69.11 | $172K | 117,783 |
| 2026-10-02 | Chen Sean Chihhsiang President and COO | Sale 10b5-1 | −3,008 | $69.77 | $210K | 114,775 |
| 2026-10-02 | Chen Sean Chihhsiang President and COO | Sale 10b5-1 | −302 | $71.86 | $22K | 114,473 |
| 2026-10-02 | Esaka Fumihide Chief Executive Officer | Sale | −7,113 | $69.11 | $492K | 453,347 |
| 2026-10-02 | Esaka Fumihide Chief Executive Officer | Sale | −8,585 | $69.77 | $599K | 444,762 |
| 2026-10-02 | Esaka Fumihide Chief Executive Officer | Sale | −862 | $71.86 | $62K | 443,900 |
| 2026-10-02 | Hanson Scott McLean Chief Technology Officer | Sale | −3,728 | $69.11 | $258K | 217,498 |
| 2026-10-02 | Hanson Scott McLean Chief Technology Officer | Sale | −4,500 | $69.77 | $314K | 212,998 |
| 2026-10-02 | Hanson Scott McLean Chief Technology Officer | Sale | −452 | $71.86 | $32K | 212,546 |
| 2026-10-02 | Winzeler Jeffrey G Chief Financial Officer | Sale | −2,343 | $69.11 | $162K | 103,956 |
| 2026-10-02 | Winzeler Jeffrey G Chief Financial Officer | Sale | −2,828 | $69.77 | $197K | 101,128 |
| 2026-10-02 | Winzeler Jeffrey G Chief Financial Officer | Sale | −284 | $71.86 | $20K | 100,844 |
| 2026-09-15 | Hanson Scott McLean Chief Technology Officer | Option exercise 10b5-1 | +7,000 | $8.12 | $57K | 228,226 |
| 2026-09-15 | Hanson Scott McLean Chief Technology Officer | Sale 10b5-1 | −1,953 | $59.53 | $116K | 226,273 |
| 2026-09-15 | Hanson Scott McLean Chief Technology Officer | Sale 10b5-1 | −4,947 | $60.56 | $300K | 221,326 |
| 2026-09-15 | Hanson Scott McLean Chief Technology Officer | Sale 10b5-1 | −100 | $61.00 | $6K | 221,226 |
| 2026-09-15 | Hanson Scott McLean Chief Technology Officer | Option exercise · Stock Option (Right to Buy) 10b5-1 | −7,000 | 45,279 |
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