51Talk Online Education Group (NYSE: COE) CEO Huang Jack Jiajia has added another purchase to what is turning into one of the more notable insider buying streaks on the market right now. According to a Form 4 filing, Huang bought 60,000 shares of COE stock on July 23, 2026, at $15.54 per share, a purchase worth $932,400.
The transaction was an open-market buy, meaning Huang used his own funds to acquire the shares rather than exercising options or receiving a grant. Following the purchase, Huang’s indirect holdings — reported as held via a trust or entity — stand at 32,227,320 shares, underscoring his position as the company’s largest individual shareholder alongside his roles as CEO and director.
Part of an 11-Purchase Streak
This latest buy is not an isolated event. It is the most recent in a string of 11 separate open-market purchases by Huang between July 14 and July 23, 2026. Combined, those transactions total $28,355,544 in stock bought over roughly a week and a half. That kind of sustained, repeated buying by a company’s top executive is what analysts typically classify as a ‘cluster buy’ — a pattern distinct from a single, one-off purchase.
We covered an earlier stage of this same buying campaign in a previous report, 51Talk CEO Adds $1.9M in COE Stock Amid $10.5M Buying Spree, when the cumulative total was a fraction of where it stands today. The pace and size of the buying have escalated meaningfully since then, with the July 23 purchase pushing the running total past $28 million.
Academic research on insider trading has found that clustered purchases — multiple insiders, or a single insider making repeated buys over a short window — tend to correlate with stronger subsequent stock performance on average compared to isolated purchases. That said, historical correlation is not a guarantee, and this filing should be read as a disclosure of activity rather than a signal to act on.
For a company like 51Talk, an online education platform that trades at a comparatively modest share price, a CEO committing tens of millions of dollars of personal capital across less than two weeks is a notable data point for anyone tracking insider sentiment. Whether the buying spree continues beyond July 23 remains to be seen, and any further filings will be reflected in subsequent SEC disclosures.
As always, this reporting is based solely on information disclosed in public SEC filings and is intended to inform readers about insider activity, not to suggest any investment action.
Source: original SEC Form 4 filing.