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Insider

Fumihide Esaka

Chief Executive Officer

Fumihide Esaka (Chief Executive Officer) filed 4 Form 4 reports in the trailing twelve months (0 purchases, 4 sales), most often in Ambiq Micro, Inc. (AMBQ). The largest single filing was $6.1M of AMBQ (107,048 sh across 8 lots, as filed), executed Aug 31.

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Return, ttmiAverage return per filing, trailing twelve months
no purchases on file
Delay-adjustediThe same average, entered at disclosure dates
returns measure stock purchases only
Filings, ttm
4
0 buys · 4 sells
Median delay
execution → disclosure
Volume, ttmiDollar value disclosed in the trailing twelve months
$15.0M
shares × price, as filed
Last traded
Sep 15
Filed Sep 15

Median ADV $40.3M across their filed names

Open performance
Volume by month
$10.1M$5.0M$0Oct 2024Apr 2025Oct 2025Apr 2026May 2026 · sells $4.2MAug 2026 · sells $690KSep 2026 · sells $10.1M
Buys $0 Sells $15.0M

Shares × price, as filed · by filing month · past 24 months

Sectors filed on
Technology 4 filings

Sector per market data · by filing · past 12 months

Most traded names
AMBQ Ambiq Micro, Inc. AMBQ · 0 buys · 4 sells 4 filings
Recent filings
AMBQSALE Ambiq Micro, Inc. View filing → $4.0M
63,400 sh across 4 lots
Exec Sep 11
Filed Sep 15 · 6:56 PM ET
AMBQSALE Ambiq Micro, Inc. View filing → $6.1M
107,048 sh across 8 lots
Exec Aug 31
Filed Sep 2 · 4:47 PM ET
AMBQSALE Ambiq Micro, Inc. View filing → $690K
10,718 sh × $64.40
Exec Aug 14
Filed Aug 18 · 4:30 PM ET
AMBQSALE Ambiq Micro, Inc. View filing → $4.2M
60,000 sh × $70.02
Exec May 14
Filed May 18 · 5:30 PM ET