Chi-Hong Ju

Sr. Vice President, Systems · Ambarella

Chi-Hong Ju (Sr. Vice President, Systems) filed 7 Form 4 reports in the trailing twelve months (0 purchases, 7 sales, 1 filed past the two-business-day deadline), most often in Ambarella, Inc. (AMBA). The largest single filing was $888K of AMBA (10,000 sh × $88.84, as filed), executed Jul 1. Data as of Nov 8 2026.

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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

0 buys · 7 sells · 1 late

Median delay

–

measured on stock purchases

Volume, ttmiDollar value disclosed in the trailing twelve months

$2.9M

shares × price, as filed

Last traded

Sep 17

Filed Sep 18

Median ADV $138.9M across their filed names

Open performance→

Volume by month

Buys $0 Sells $4.3M

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

Sectors filed on

Technology 7 filings

Sector per market data · by filing · past 12 months

Most traded names

AMBA

Ambarella, Inc. AMBA · 0 buys · 10 sells 10 filings

Recent filings

AMBASALE Ambarella, Inc. View filing → $130K
2,009 sh × $64.83
Exec Sep 17
Filed Sep 18 · 4:50 PM ET AMBASALE Ambarella, Inc. View filing → $888K
10,000 sh × $88.84
Exec Jul 1
Filed Jul 2 · 4:58 PM ET AMBASALE Ambarella, Inc. View filing → $137K
2,017 sh × $67.87
Exec Jun 17
Filed Jun 18 · 5:30 PM ET AMBASALE Ambarella, Inc. View filing → $366K
6,884 sh across 2 lots
Exec Mar 17
Filed Mar 19 · 5:30 PM ET AMBASALE Ambarella, Inc. View filing → $584K
7,728 sh × $75.58
Exec Jan 5
Filed Jan 7 · 5:30 PM ET AMBASALE Ambarella, Inc. View filing → $558K
7,945 sh × $70.25
Exec Dec 30 2025
Filed Jan 23 · 5:30 PM ET † AMBASALE Ambarella, Inc. View filing → $265K
3,765 sh × $70.32
Exec Dec 30 2025
Filed Dec 31 2025 · 5:30 PM ET AMBASALE Ambarella, Inc. View filing → $909K
11,213 sh across 2 lots
Exec Oct 13 2025
Filed Oct 15 2025 · 5:30 PM ET More filings →