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 → $32.3M
2,807,340 sh across 4 lots
Exec Sep 17
Filed Oct 8 · 6:32 AM ET † COEPURCHASE 51Talk Online Education Group View filing → $11.8M
592,320 sh across 2 lots
Exec Aug 11
Filed Aug 13 · 6:57 AM ET COEPURCHASE 51Talk Online Education Group View filing → $7.7M
395,580 sh across 3 lots
Exec Aug 6
Filed Aug 12 · 7:40 AM ET † COEPURCHASE 51Talk Online Education Group View filing → $13.8M
740,760 sh across 4 lots
Exec Jul 31
Filed Aug 10 · 6:31 AM ET † COEPURCHASE 51Talk Online Education Group View filing → $8.1M
473,520 sh across 3 lots
Exec Jul 28
Filed Aug 5 · 6:30 AM ET † COEPURCHASE 51Talk Online Education Group View filing → $10.7M
637,200 sh across 2 lots
Exec Jul 24
Filed Jul 30 · 6:57 AM ET † COEPURCHASE 51Talk Online Education Group View filing → $17.9M
1,103,820 sh across 6 lots
Exec Jul 21
Filed Jul 27 · 9:04 AM ET † COEPURCHASE 51Talk Online Education Group View filing → $10.5M
622,140 sh across 5 lots
Exec Jul 14
Filed Jul 23 · 7:19 AM ET † More filings →