Updated Jul 16, 2026
Huang Jack Jiajia has filed 13 SEC Form 4 filings across 1 company in the last 90 days — buying. Lifetime open-market purchases: $137.43M. Historical track record: 5/5 stars across 10 tracked purchases.

Huang Jack Jiajia is the Chief Executive Officer of 51Talk Online Education Group, a company that specializes in online English language education. Under his leadership, 51Talk has expanded its reach in the online education sector, particularly in China, where it has become a prominent player in providing English language learning services. Huang has been instrumental in developing innovative educational technologies and strategies to enhance the learning experience for students.
| Role | Chief Executive Officer, Director, 10% Owner |
|---|---|
| Notability | 65/100 |
InsiderAlpha computes a forward-return-based score for every insider with enough Form 4 purchase history. The metrics below reflect realised performance after each tracked open-market purchase.
| InsiderAlpha rating | ★★★★★ (5/5) |
|---|---|
| Total purchases tracked | 10 |
| Purchases with forward-return data | 10 |
| 30-day win rate | 10000% |
| 90-day win rate | 0% |
| Avg 5-day return | +774.35% |
| Avg 30-day return | +2940.26% |
| Avg 90-day return | -2417.71% |
| Best 30-day return | +4731.58% |
| Date | Ticker | Company | Code | Shares | Price | Value |
|---|---|---|---|---|---|---|
| 2026-07-13 | COE | 51Talk Online Education Group | P — Open-market purchase [10b5-1] | 185.9K | $16.45 | $3.06M |
| 2026-07-13 | COE | 51Talk Online Education Group | P — Open-market purchase [10b5-1] | 211.3K | $16.72 | $3.53M |
| 2026-07-13 | COE | 51Talk Online Education Group | P — Open-market purchase [10b5-1] | 165.4K | $16.46 | $2.72M |
| 2026-07-08 | COE | 51Talk Online Education Group | P — Open-market purchase | 556.0K | $16.78 | $9.33M |
| 2026-07-08 | COE | 51Talk Online Education Group | P — Open-market purchase | 286.8K | $16.57 | $4.75M |
| 2026-07-08 | COE | 51Talk Online Education Group | P — Open-market purchase | 60 | $15.95 | $957 |
| 2026-07-08 | COE | 51Talk Online Education Group | P — Open-market purchase | 60.0K | $15.52 | $931K |
| 2026-07-08 | COE | 51Talk Online Education Group | P — Open-market purchase | 293.5K | $15.98 | $4.69M |
| 2026-07-08 | COE | 51Talk Online Education Group | P — Open-market purchase | 35.7K | $15.21 | $543K |
| 2026-07-08 | COE | 51Talk Online Education Group | P — Open-market purchase | 60.0K | $15.20 | $912K |
| 2026-07-08 | COE | 51Talk Online Education Group | P — Open-market purchase | 152.8K | $15.23 | $2.33M |
| 2026-06-30 | COE | 51Talk Online Education Group | P — Open-market purchase | 151.8K | $15.61 | $2.37M |
| 2026-06-30 | COE | 51Talk Online Education Group | P — Open-market purchase | 60 | $14.85 | $891 |
| 2026-06-30 | COE | 51Talk Online Education Group | P — Open-market purchase | 150.6K | $15.76 | $2.37M |
| 2026-06-30 | COE | 51Talk Online Education Group | P — Open-market purchase | 60.0K | $15.36 | $922K |
| 2026-06-30 | COE | 51Talk Online Education Group | P — Open-market purchase | 60.0K | $15.40 | $924K |
| 2026-06-30 | COE | 51Talk Online Education Group | P — Open-market purchase | 60.0K | $15.19 | $911K |
| 2026-06-30 | COE | 51Talk Online Education Group | P — Open-market purchase | 58.5K | $14.81 | $866K |
| 2026-06-30 | COE | 51Talk Online Education Group | P — Open-market purchase | 60.0K | $14.85 | $891K |
| 2026-06-30 | COE | 51Talk Online Education Group | P — Open-market purchase | 210.0K | $15.46 | $3.25M |
Huang Jack Jiajia is the Chief Executive Officer of 51Talk Online Education Group, a company that specializes in online English language education. Under his leadership, 51Talk has expanded its reach in the online education sector, particularly in China, where it has become a prominent player in providing English language learning services. Huang has been instrumental in develo…
13 primary Form 4 filings in the last 90 days, covering 1 company.
Recorded transactions: 90 open-market purchases ($137.43M) and 0 open-market sales () across all tracked filings.
Across 10 tracked purchases, Huang Jack Jiajia averaged +2940.3% avg 30-day return with a 10000% 30-day win rate. InsiderAlpha rates the track record at 5/5 stars.
All Form 4 filings, transaction values, and 10b5-1 plan flags are listed on this page and updated in real time as new SEC EDGAR filings are processed.
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