Jack Jiajia Huang

Chief Executive Officer · 51Talk Online Education Group

Jack Jiajia Huang (Chief Executive Officer) filed 24 Form 4 reports in the trailing twelve months (24 purchases, 0 sales, 23 filed past the two-business-day deadline), most often in 51Talk Online Education Group (COE). Across 24 priced purchase filings, the average 21-session return was -3.7% from execution and -11.2% from disclosure (delay-adjusted; derived). The largest single filing was $35.3M of COE (1,740,240 sh across 10 lots, as filed), executed Mar 26. Data as of Nov 8 2026.

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Return, ttmiAverage return per filing, trailing twelve months

-3.7%

avg across 24 priced filings

Delay-adjustediThe same average, entered at disclosure dates

-11.2%

same 24 filings, from disclosure

Filings, ttm

24 buys · 0 sells · 23 late

Median delay

execution → disclosure

Volume, ttmiDollar value disclosed in the trailing twelve months

$262.2M

shares × price, as filed

Last traded

Sep 25

Filed Oct 8

Median ADV $230K across their filed names

Impact on $10,000 · 12M

$5,068 (-49.3%)

S&P 500 $10,907 (+9.1%) · 58.4 pts behind

Jack Jiajia Huang S&P 500

Derived: compounded across filings from disclosure dates · past 12 months

Open performance→

Volume by month

Buys $262.2M Sells $0

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

Sectors filed on

Consumer Defensive 24 filings

Sector per market data · by filing · past 12 months

Most traded names

COE

51Talk Online Education Group COE · 24 buys · 0 sells 24 filings

Recent filings

COEPURCHASE 51Talk Online Education Group View filing → $4.2M
155,220 sh across 5 lots
Exec May 15
Filed May 26 · 7:29 AM ET † COEPURCHASE 51Talk Online Education Group View filing → $2.1M
84,180 sh across 4 lots
Exec May 11
Filed May 19 · 8:01 AM ET † COEPURCHASE 51Talk Online Education Group View filing → $2.9M
119,400 sh across 3 lots
Exec May 6
Filed May 13 · 7:30 AM ET † COEPURCHASE 51Talk Online Education Group View filing → $12.2M
446,700 sh across 8 lots
Exec Apr 24
Filed May 8 · 4:08 PM ET † COEPURCHASE 51Talk Online Education Group View filing → $3.6M
146,400 sh across 4 lots
Exec Apr 20
Filed Apr 27 · 8:16 AM ET † COEPURCHASE 51Talk Online Education Group View filing → $9.6M
384,960 sh across 5 lots
Exec Apr 13
Filed Apr 22 · 4:03 PM ET † COEPURCHASE 51Talk Online Education Group View filing → $3.9M
187,020 sh across 2 lots
Exec Apr 10
Filed Aug 21 · 6:48 AM ET † COEPURCHASE 51Talk Online Education Group View filing → $35.3M
1,740,240 sh across 10 lots
Exec Mar 26
Filed Apr 13 · 8:31 AM ET †