Huang Jack Jiajia

SEC Form 4 insider
Chief Executive Officer · 51Talk Online Education Group ($COE)
4 theses · first seen Aug 12, 2026
WindowThesesResolvedWinsWin rateAvg returnMedian return
1d22150%-1.3%-1.3%
3d33133%-1.9%-2.7%
1w3300%-17.1%-19.3%
1m1100%-47.5%-47.5%
3m000———
6m000———
1y000———

Past performance does not predict future results. Informational only, not investment advice.

Thesis history

$COESEC Form 4bullish
Long 2,812,140 shares of COE
Bought 2,812,140 @ $11.50 avg · $32,333,530 · 2026-09-17

Form 4: Huang Jack Jiajia bought COE

Huang Jack Jiajia (Chief Executive Officer at 51Talk Online Education Group) reported an open-market purchase of 2,812,140 shares of COE at an average $11.50, roughly $32,333,530, in a Form 4 filed 2026-10-08.

Now $11.002m ago
View filing on SEC.gov →
$COESEC Form 4bullish10b5-1 plan
Long 187,020 shares of COE
Bought 187,020 @ $21.02 avg · $3,932,015 · 2026-04-10

Form 4: Huang Jack Jiajia bought COE

Huang Jack Jiajia (Chief Executive Officer at 51Talk Online Education Group) reported an open-market purchase of 187,020 shares of COE at an average $21.02, roughly $3,932,015, in a Form 4 filed 2026-08-21. Transaction was made under a pre-arranged 10b5-1 plan.

At post $16.43Now $11.00-33.0% since posted2m ago
1d—
3d+2.3%
1w-6.6%
1m-28.1%
3m—
6m—
1y—
View filing on SEC.gov →
$COESEC Form 4bullish10b5-1 plan
Long 592,320 shares of COE
Bought 592,320 @ $19.93 avg · $11,804,395 · 2026-08-11

Form 4: Huang Jack Jiajia bought COE

Huang Jack Jiajia (Chief Executive Officer at 51Talk Online Education Group) reported an open-market purchase of 592,320 shares of COE at an average $19.93, roughly $11,804,395, in a Form 4 filed 2026-08-13. Transaction was made under a pre-arranged 10b5-1 plan.

At post $20.74Now $11.00-47.0% since posted2m ago
1d-5.2%
3d-5.2%
1w-25.3%
1m-48.8%
3m—
6m—
1y—
View filing on SEC.gov →
$COESEC Form 4bullish10b5-1 plan
Long 395,580 shares of COE
Bought 395,580 @ $19.53 avg · $7,725,778 · 2026-08-06

Form 4: Huang Jack Jiajia bought COE

Huang Jack Jiajia (Chief Executive Officer at 51Talk Online Education Group) reported an open-market purchase of 395,580 shares of COE at an average $19.53, roughly $7,725,778, in a Form 4 filed 2026-08-12. Transaction was made under a pre-arranged 10b5-1 plan.

At post $20.21Now $11.00-45.6% since posted2m ago
1d+2.6%
3d-2.7%
1w-19.3%
1m-47.5%
3m—
6m—
1y—
View filing on SEC.gov →

End of results.