Fumihide Esaka owns 1.84% of Ambiq Micro
443,900 shares as of the October 15, 2026 filing, worth $22.1M at the latest close.
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Free.
The stake
1.84%
worth $22.1M at the latest close
Stake rank
#1,178
by dollar value of the stake
Last sale
17 days ago
Oct 2, 2026
Last buy
None
no purchases since 2026
Fumihide Esaka owns 1.84% of Ambiq Micro, Inc.: 443,900 of 24,184,536 shares, worth about $22.1M at the 2026-10-16 close. The stake has moved from 0.09% in 2025 to 1.84% on 2026-10-15, across 3 sales and 0 purchases that moved it since 2016. The last trade that moved it was a discretionary sale of $1.2M on 2026-10-02.
How the stake is held
as of the Oct 15, 2026 filing
SHARES
OF THE STAKE
COMMON STOCK · stated Oct 15, 2026 · Form 4 ↗
HELD DIRECTLY
443,900
100.0%
THE STAKE
443,900
1.84%