Fumihide Esaka
Chief Executive Officer at Ambiq Micro Inc.
Sits on 1 board. Last updated September 28, 2026
Time on boards
- Boards served
- 1
- Current seats
- 1
- Board service
- 1 year
- Director since
- 2025
1 year of board service in total across 1 board, counting each seat separately. Longest: Ambiq Micro Inc., 1 year.
Chief executive roles
Weak · grade F
Out of 100, from shareholder return, dividends, growth and acquisitions.
Partial: only 20% of the scoring weight is on file.
- Revenue growth 20%
- 21
-4.7% a year in revenue
20% of the scoring weight is on file. Figures cover December 2024 – December 2025.
Insider trades
All notable trades →From SEC Forms 4 and 5. Open-market purchases and sales are highlighted; grants, option exercises and shares withheld for tax are routine.
| Date | Company | Transaction | Shares | Price | Value |
|---|---|---|---|---|---|
| Oct 15, 2026 | Ambiq Micro Inc. | Option exercise | +5,000 | $8.12 | $40,600 |
| Oct 15, 2026 | Ambiq Micro Inc. | Open-market sale | −500 | $49.13 | $24,567 |
| Oct 15, 2026 | Ambiq Micro Inc. | Open-market sale | −500 | $50.02 | $25,011 |
| Oct 15, 2026 | Ambiq Micro Inc. | Open-market sale | −2,800 | $51.15 | $143,214 |
| Oct 15, 2026 | Ambiq Micro Inc. | Open-market sale | −1,200 | $51.85 | $62,226 |
| Oct 2, 2026 | Ambiq Micro Inc. | Open-market sale | −7,113 | $69.11 | $491,567 |
| Oct 2, 2026 | Ambiq Micro Inc. | Open-market sale | −8,585 | $69.77 | $598,994 |
| Oct 2, 2026 | Ambiq Micro Inc. | Open-market sale | −862 | $71.86 | $61,943 |
| Sep 15, 2026 | Ambiq Micro Inc. | Option exercise | +13,500 | $8.12 | $109,620 |
| Sep 15, 2026 | Ambiq Micro Inc. | Open-market sale | −3,785 | $59.56 | $225,435 |
| Sep 15, 2026 | Ambiq Micro Inc. | Open-market sale | −9,615 | $60.55 | $582,188 |
| Sep 15, 2026 | Ambiq Micro Inc. | Open-market sale | −100 | $61.00 | $6,100 |
| Sep 11, 2026 | Ambiq Micro Inc. | Option exercise | +50,000 | $12.60 | $630,000 |
| Sep 11, 2026 | Ambiq Micro Inc. | Open-market sale | −42,083 | $63.27 | $2,662,591 |
| Sep 11, 2026 | Ambiq Micro Inc. | Open-market sale | −7,917 | $63.86 | $505,580 |
Questions about Fumihide Esaka
What boards is Fumihide Esaka on?
Fumihide Esaka sits on the board of Ambiq Micro Inc.
What company is Fumihide Esaka the CEO of?
Fumihide Esaka has been Chief Executive Officer of Ambiq Micro Inc. since July 2025.
How long has Fumihide Esaka served on boards?
Our records show at least 1 year of board service across 1 board, the earliest from 2025.
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