51Talk Online Education Group (NYSE: COE) CEO Huang Jack Jiajia continued an extended run of open-market stock purchases this week, buying 337,500 shares on August 12, 2026 at $20.17 apiece for a total of $6,807,375.00. The purchase was made with Huang’s own funds and brings his indirectly held stake, tied to a trust or entity, to 35,428,140 shares.
The August 12 buy is the latest in a string of transactions that now spans eight separate open-market purchases between August 3 and August 12, 2026, totaling $31,141,241 in aggregate. Regulatory filings show Huang, who holds the CEO title along with a board seat and 10%-plus ownership stake, has been steadily adding to his position nearly every trading day over the past two weeks rather than making a single large purchase.
A Pattern That Keeps Growing
Because the buying has recurred across multiple separate filings rather than appearing as an isolated event, whoisbuyingnow.com classifies this activity as a cluster buy. Each new disclosure has pushed the running total higher: the spree stood at $21.5 million as of the August 10 filing, detailed in our earlier report, COE CEO Huang Buys $3.94M More, Spree Hits $21.5M, and has now climbed by nearly $10 million in just two additional trading sessions.
The consistency of the buying, both in frequency and in the fact that it comes from the company’s top executive and largest insider, distinguishes this pattern from a one-off purchase. Academic research on insider trading has found that clustered buying by multiple insiders, or repeated buying by a single insider over a short window, tends to correlate with subsequent stock outperformance more reliably than isolated purchases. That said, this pattern reflects historical statistical tendencies across many companies and is not a forecast or endorsement of 51Talk’s shares specifically.
Huang’s after-transaction ownership of 35,428,140 shares, held indirectly, still represents a significant portion of the company and keeps his economic interest closely tied to 51Talk’s performance. With eight purchases logged in a ten-day span and no indication yet that the buying has stopped, the filings suggest this is an evolving story rather than a closed chapter. whoisbuyingnow.com will continue tracking new Form 4 disclosures from 51Talk insiders as they are filed with the SEC.
Readers interested in the earlier stages of this buying spree can also review our coverage from August 5, when the total first crossed the $29 million mark, linked above alongside the most recent update.
→ See all COE coverage on WhoIsBuyingNow
Source: original SEC Form 4 filing.