# Ambiq Micro (AMBQ): value investors who own it | moatshark

1 value investor held Ambiq Micro in their Q3 2026 13F, led by First Eagle Investment Management.

## 13F holders

| Manager | Portfolio | Value | Change | Quarters held |
| --- | --- | --- | --- | --- |
| First Eagle Investment Management | 0.0% | $21.6m | Trimmed -12% | 4 |

## Directors buying and selling (Form 4, last 12 months)

| Date | Who | Role | Bought or sold | Shares | Value |
| --- | --- | --- | --- | --- | --- |
| 2026-10-15 | Hanson Scott McLean | Chief Technology Officer | Sold | 3700 | $189k |
| 2026-10-15 | Esaka Fumihide | Chief Executive Officer | Sold | 2800 | $143k |
| 2026-10-15 | Hanson Scott McLean | Chief Technology Officer | Sold | 1800 | $93k |
| 2026-10-15 | Esaka Fumihide | Chief Executive Officer | Sold | 1200 | $62k |
| 2026-10-15 | Hanson Scott McLean | Chief Technology Officer | Sold | 900 | $45k |
| 2026-10-15 | Hanson Scott McLean | Chief Technology Officer | Sold | 600 | $29k |
| 2026-10-15 | Esaka Fumihide | Chief Executive Officer | Sold | 500 | $25k |
| 2026-10-15 | Esaka Fumihide | Chief Executive Officer | Sold | 500 | $25k |
| 2026-10-14 | Chen Sean Chihhsiang | President and COO | Sold | 7539 | $378k |
| 2026-10-14 | Chen Sean Chihhsiang | President and COO | Sold | 4000 | $214k |
| 2026-10-14 | Chen Sean Chihhsiang | President and COO | Sold | 2000 | $105k |
| 2026-10-14 | Chen Sean Chihhsiang | President and COO | Sold | 1261 | $65k |
| 2026-10-14 | Chen Sean Chihhsiang | President and COO | Sold | 200 | $11k |
| 2026-10-05 | Chen Sean Chihhsiang | President and COO | Sold | 5508 | $366k |
| 2026-10-05 | Chen Sean Chihhsiang | President and COO | Sold | 1797 | $121k |
| 2026-10-05 | Chen Sean Chihhsiang | President and COO | Sold | 800 | $54k |
| 2026-10-05 | Chen Sean Chihhsiang | President and COO | Sold | 100 | $7k |
| 2026-10-02 | Esaka Fumihide | Chief Executive Officer | Sold | 8585 | $599k |
| 2026-10-02 | Esaka Fumihide | Chief Executive Officer | Sold | 7113 | $492k |
| 2026-10-02 | Hanson Scott McLean | Chief Technology Officer | Sold | 4500 | $314k |

Source: SEC filings, via moatshark (https://www.moatshark.com/s/ambq). Values traded and returns are estimates. Not investment advice. Built 2026-10-21.