Ambiq Micro, Inc. (AMBQ)
$57.47-$2.75 (-4.58%) Today
Fumihide Esaka - OfficerFumihide Esaka - OfficerAmbiq Micro Inc is a fabless semiconductor company that has developed technology based on a patented Sub-threshold Power Optimized Technology (SPOT) platform that significantly reduces the amount of power consumed by integrated circuits. It is a pioneer and provider of ultra-low power semiconductor solutions designed to address the power consumption challenges of general purpose and AI compute - especially at the edge. The company provides a full-stack solution encompassing tightly integrated hardware and software. Its solutions include a diverse family of systems-on-chip (SoCs) and the software required to enable on-chip AI processing, general compute, sensing, security, storage, wireless connectivity, and developed graphics.
| Form 4 transaction type | Transactions | Shares | Total value |
|---|---|---|---|
| Open-market sale | 9 | 75,500 | $4.60M |
| Grant or award | 5 | 24,785 | |
| Option exercise | 12 | 182,904 |
Dollar totals are shown for open-market purchases and sales only. Grants, option exercises, gifts and tax withholding are reported by share count because they are not trades at a market price.
39 Form 4 filings on record, the earliest from Jul 29, 2025, newest first. Filing history page 2 of 2.
| Date | Insider | Transaction | Security | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Fumihide Esaka - Officer | Grant or award | Common Stock | 159,907 | $0.00 | - | |
| Jeffrey G. Winzeler - Officer | Grant or award | Common Stock | 52,667 | $0.00 | - | |
| Scott McLean Hanson - Officer | Grant or award | Common Stock | 83,819 | $0.00 | - | |
| Sean Chihhsiang Chen - Officer | Grant or award | Common Stock | 56,029 | $0.00 | - | |
 Wen Hsuan Hsieh | Other | Common Stock | 394,989 | - | - | |
| Wen Hsuan Hsieh | Other | Series G Convertible Preferred Stock | 394,989 | $0.00 | - | |
| KPCB XVI Associates, LLC | Other | Common Stock | 748,046 | - | - | |
| KPCB XVI Associates, LLC | Other | Common Stock | 98,958 | - | - | |
| KPCB XVI Associates, LLC | Other | Common Stock | 23,294 | - | - | |
| KPCB XVI Associates, LLC | Other | Common Stock | 194,618 | - | - | |
| KPCB XVI Associates, LLC | Other | Series C Convertible Preferred Stock | 748,046 | $0.00 | - | |
| KPCB XVI Associates, LLC | Other | Series D Convertible Preferred Stock | 98,958 | $0.00 | - | |
| KPCB XVI Associates, LLC | Other | Series E Convertible Preferred Stock | 22,594 | $0.00 | - | |
| KPCB XVI Associates, LLC | Other | Series F Convertible Preferred Stock | 171,064 | $0.00 | - | |
| Ker Zhang | Grant or award | Common Stock | 23,809 | $0.00 | - | |
| Timothy Chen | Grant or award | Common Stock | 47,618 | $0.00 | - | |
| Joseph A. Tautges | Grant or award | Common Stock | 56,546 | $0.00 | - |
This is as far as the anonymous view goes. Create a free account for all 39 AMBQ filings on record.
A Form 144 is notice of an INTENDED sale, not a completed one. It often precedes the Form 4 that reports the trade actually happening.
| Filed | Filer | Relationship | Shares | Market value | Notice |
|---|---|---|---|---|---|
| SCOTT HANSON | Officer | 27,500 | $1.64M | View on EDGAR | |
| SCOTT HANSON | Officer | 27,500 | $1.64M | View on EDGAR | |
| FUMIHIDE ESAKA | Director, Officer | 45,500 | $2.93M | View on EDGAR |
Ambiq Micro, Inc. (AMBQ) had 9 insider filings in the last 90 days, with the most recent on 2026-08-28. The full record for AMBQ runs to 39 Form 4 filings, the earliest from 2025-07-29. InsiderAlpha tracks every Form 4, Form 144, and 8-K filing in real time.
No insider purchases of AMBQ were filed in the last 90 days.
9 insider sales of AMBQ were filed in the last 90 days, totaling $4.60M.
This page tracks AMBQ Form 4 insider transactions, Form 144 sale notices, and 8-K material event disclosures in one timeline. Annual 10-K and quarterly 10-Q reports live on the company's SEC EDGAR page.
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Every Form 4 below links to the original document on SEC EDGAR, so the numbers on this page can be checked against the filing they came from.
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