51talk Online Education Group (COE)Jack Jiajia Huang disclosed a 37.4% stake in COE and may seek to influence the company 37.4%

37.4%

Stake

135M

Shares owned

Stake as of

Jul 1, 2026

Filed

Oct 16, 2026

The story around this disclosure

Every dated public record OQRO holds about the company from 60 days before to 120 days after, oldest first. It shows what was going on; none of it is a stated reason for the trade.

1. May 27, 2026InsiderCEO purchased ~$1.21M of COE shares in the open market
2. May 28, 2026InsiderCEO purchased ~$665K of COE shares in the open market
3. May 29, 2026InsiderCEO purchased ~$547K of COE shares in the open market
4. Jun 1, 2026InsiderCEO purchased ~$1.24M of COE shares in the open market
5. Jun 2, 2026InsiderCEO purchased ~$1.43M of COE shares in the open market
6. Jun 3, 2026InsiderCEO purchased ~$219K of COE shares in the open market
7. Jun 4, 2026InsiderCEO purchased ~$364K of COE shares in the open market
8. Jun 5, 2026InsiderCEO purchased ~$334K of COE shares in the open market
9. Jun 8, 2026InsiderCEO purchased ~$521K of COE shares in the open market
10. Jun 9, 2026InsiderCEO purchased ~$785K of COE shares in the open market
11. Jun 10, 2026InsiderCEO purchased ~$401K of COE shares in the open market
12. Jun 11, 2026InsiderCEO purchased ~$656K of COE shares in the open market
13. Jun 12, 2026InsiderCEO purchased ~$1.8M of COE shares in the open market
14. Jun 15, 2026InsiderCEO purchased ~$405K of COE shares in the open market
15. Jun 16, 2026InsiderCEO purchased ~$975K of COE shares in the open market
16. Jun 17, 2026InsiderCEO purchased ~$687K of COE shares in the open market
17. Jun 18, 2026Insider · 1 personInsiders: 3 purchases (~$1.7M)
18. Jun 22, 2026Insider · 1 personInsiders: 3 purchases (~$1.2M)
19. Jun 23, 2026Insider · 1 personInsiders: 6 purchases (~$4.0M)
20. Jun 24, 2026Insider · 1 personInsiders: 7 purchases (~$7.8M)
21. Jun 25, 2026InsiderCEO purchased ~$2.37M of COE shares in the open market
22. Jun 26, 2026Insider · 1 personInsiders: 2 purchases (~$2.4M)
23. Jun 29, 2026Insider · 1 personInsiders: 3 purchases (~$3.8M)
24. Jun 30, 2026Insider · 1 personInsiders: 3 purchases (~$5.6M)
25. Jul 1, 2026InsiderCEO purchased ~$4.75M of COE shares in the open market

What came next

1. Jul 2, 2026InsiderCEO purchased ~$9.33M of COE shares in the open market
2. Jul 6, 2026InsiderCEO purchased ~$2.72M of COE shares in the open market
3. Jul 7, 2026InsiderCEO purchased ~$3.53M of COE shares in the open market
4. Jul 8, 2026InsiderCEO purchased ~$3.06M of COE shares in the open market
5. Jul 9, 2026InsiderCEO purchased ~$3.21M of COE shares in the open market
6. Jul 10, 2026InsiderCEO purchased ~$1.59M of COE shares in the open market
7. Jul 13, 2026InsiderCEO purchased ~$3.68M of COE shares in the open market
8. Jul 14, 2026InsiderCEO purchased ~$3.08M of COE shares in the open market
9. Jul 15, 2026InsiderCEO purchased ~$2.29M of COE shares in the open market
10. Jul 16, 2026InsiderCEO purchased ~$1.86M of COE shares in the open market
11. Jul 17, 2026InsiderCEO purchased ~$1.38M of COE shares in the open market
12. Jul 20, 2026InsiderCEO purchased ~$1.88M of COE shares in the open market
13. Jul 21, 2026InsiderCEO purchased ~$8.29M of COE shares in the open market
14. Oct 16, 20265% stakeJack Jiajia Huang filed an activist stake (13D) of 37.4%

How to read SEC Schedule 13D

A Schedule 13D and a Schedule 13G both disclose beneficial ownership of more than 5% of a US company's voting shares. A 13D is the long form, filed by holders who may seek to influence or control the company, and it must state what they intend to do. A 13G is the short form, open only to passive holders and to certain institutions holding in the ordinary course of business, and it asks no question about intent.

Full guide: Schedule 13D vs Schedule 13G: what is the difference?

What else is on file for 51talk Online Education Group

For 51talk Online Education Group, OQRO holds 33 insider filings (SEC Form 4 or Form 144) and 1 fund holdings report (13F) dated in the last 90 days.

These are records OQRO holds, counted by their date, not a measure of how much trading took place. Routine paperwork such as option exercises and tax withholding is left out. Everything for the company is on its COE page.

How this filing works

• Schedule 13D vs 13G

Other disclosures at 51talk Online Education Group

• SEC Form 4Oct 8, 2026
• SEC Form 4Oct 8, 2026
• SEC Form 4Oct 8, 2026
• SEC Form 4Oct 8, 2026
• SEC Form 4Oct 8, 2026
• SEC Form 4Oct 8, 2026

Everything OQRO holds on this company is on its COE page.