AMBQ
Ambiq Micro, Inc.
Latest Form 4:Sale$2.8MbyEsaka Fumihide (Chief Executive Officer) · filed Sep 2, 2026
Ambiq Micro, Inc. (AMBQ) has 36 SEC Form 4 filings (76 transaction rows) in the rolling window, disclosed by 7 distinct insiders. Most recent filing: Sep 2, 2026.
Inside the rolling window, 7 insiders at Ambiq Micro, Inc. reported no open-market purchases and 15 open-market sales totaling $27.7M. The most active filer is Chief Executive Officer Esaka Fumihide with 5 filings. Insiders have net sold $27.1M over the trailing 6 months. The most recent open-market filing is a sale of 48,500 shares by Chief Executive Officer Esaka Fumihide, dated Aug 31, 2026, worth $2.8M.
- Industry:Semiconductors
- CEO:Fumihide Esaka
- Employees:190
- HQ:Austin, TX, US
- IPO:2025-07-30
Insider Buying
$0
reported purchases (SEC code P)
Insider Selling
$27.7M
reported sales (SEC code S)
Unique Insiders
7
in the rolling window
Market Cap
$1.4B
latest known value
| Source | ||||||
|---|---|---|---|---|---|---|
| Chief Executive Officer | Sale | 48,500 | $2.8M | Sep 2 | SEC ↗ | |
| Chief Executive Officer | Sale | 48,973 | $2.8M | Sep 2 | SEC ↗ | |
| Chief Executive Officer | Sale | 11,027 | $625K | Sep 2 | SEC ↗ | |
| Chief Technology Officer | Sale | 27,500 | $1.6M | Aug 28 | SEC ↗ | |
| Chief Technology Officer | Sale | 27,500 | $1.6M | Aug 28 | SEC ↗ | |
Esaka FumihideFirst in 3 months | Chief Executive Officer | Sale | 13,500 | $869K | Aug 18 | SEC ↗ |
Hanson Scott McLeanFirst in 3 months | Chief Technology Officer | Sale | 7,000 | $451K | Aug 18 | SEC ↗ |
Chen TimothyFirst filing | Director | Sale | 70,592 | $5.6M | May 29 | SEC ↗ |
Chen Sean ChihhsiangFirst filing | President and COO | Sale | 55,685 | $3.9M | May 18 | SEC ↗ |
Esaka FumihideFirst filing | Chief Executive Officer | Sale | 60,000 | $4.2M | May 18 | SEC ↗ |
Winzeler Jeffrey GFirst filing | Chief Financial Officer | Sale | 26,000 | $1.8M | May 18 | SEC ↗ |
Hanson Scott McLeanFirst in 4 months | Chief Technology Officer | Sale | 10,200 | $706K | May 18 | SEC ↗ |
Connors Michele KimFirst filing | General Counsel | Sale | 811 | $21K | Apr 6 | SEC ↗ |
TAUTGES JOSEPH AFirst filing | Director | Sale | 7,800 | $242K | Jan 28 | SEC ↗ |
Hanson Scott McLeanFirst filing | Chief Technology Officer | Sale | 10,000 | $310K | Jan 28 | SEC ↗ |
Frequently asked questions
How many SEC Form 4 insider filings does AMBQ have?
Ambiq Micro, Inc. (AMBQ) has 36 SEC Form 4 filings (76 transaction rows) in the rolling 365-day window, disclosed by 7 distinct insiders. Most recent filing: Sep 2, 2026.
When was the most recent SEC Form 4 filing for AMBQ?
The most recent Form 4 filing for AMBQ on Tracefour is dated Sep 2, 2026.
Who is the most active insider at AMBQ?
The most active SEC Form 4 filer at AMBQ in the rolling window is Chief Executive Officer Esaka Fumihide, with 5 filings.
What is the net insider flow at AMBQ over the last 6 months?
Over the trailing 180 days, insiders at AMBQ have net sold $27.1M based on SEC Form 4 disclosures.
What is the total insider buy and sell value at AMBQ in the current window?
Inside the rolling window, insiders at AMBQ bought $0 and sold $27.7M based on SEC Form 4 filings.
Can I get alerts for AMBQ insider trading?
Yes. Tracefour sends a free email when a new SEC Form 4 purchase or sale is filed at Ambiq Micro, Inc. (AMBQ). Alerts are set per company from the page itself, there is no paid tier, and each email links to the original filing on SEC EDGAR.
Related companies
Ambiq Micro, Inc. is in the Technology sector.