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Sean Chihhsiang Chen

President and COO

Sean Chihhsiang Chen (President and COO) filed 3 Form 4 reports in the trailing twelve months (0 purchases, 3 sales), most often in Ambiq Micro, Inc. (AMBQ). The largest single filing was $3.9M of AMBQ (55,685 sh across 2 lots, as filed), executed May 15.

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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
3
0 buys · 3 sells
Median delay
execution → disclosure
Volume, ttmiDollar value disclosed in the trailing twelve months
$5.6M
shares × price, as filed
Last traded
Sep 14
Filed Sep 15

Median ADV $40.3M across their filed names

Open performance
Volume by month
$3.9M$2.0M$0Oct 2024Apr 2025Oct 2025Apr 2026May 2026 · sells $3.9MSep 2026 · sells $1.7M
Buys $0 Sells $5.6M

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

Sectors filed on
Technology 3 filings

Sector per market data · by filing · past 12 months

Most traded names
AMBQ Ambiq Micro, Inc. AMBQ · 0 buys · 3 sells 3 filings
Recent filings
AMBQSALE Ambiq Micro, Inc. View filing → $817K
13,600 sh across 2 lots
Exec Sep 14
Filed Sep 15 · 6:57 PM ET
AMBQSALE Ambiq Micro, Inc. View filing → $858K
15,000 sh across 2 lots
Exec Sep 4
Filed Sep 9 · 5:10 PM ET
AMBQSALE Ambiq Micro, Inc. View filing → $3.9M
55,685 sh across 2 lots
Exec May 15
Filed May 18 · 5:30 PM ET