GreenOak, Altimeter Boost Coupang Stake as ISDS Dispute with South Korea Persists
A South Korean activist investor group led by GreenOak Capital and Altimeter is reported to have boosted its stake in Coupang, Inc., the U.S.-listed subsidiary of the Seoul-based e-commerce platform. A U.S. Securities and Exchange Commission filing by Coupang director Neil Mehta shows he bought about 7.35 million Class A common shares on or between the 11th and 13th of the month, increasing his indirect holdings in Coupang to roughly 55.31 million shares. At the close price of $18.45 on the 13th, the value of his total stake was about $1.02 billion.
The purchase adds to a roughly 200 billion won (about several hundred million dollars) secondary buy by Mehta and associates, according to the same disclosure. Mehta is the co-founder of GreenOak Capital and serves on Coupang’s board as part of his investment activities related to GreenOak and related funds managed with Altimeter Capital.
The timing of the stock purchase follows a related move: GreenOak and Altimeter had previously petitioned the U.S. Trade Representative under Section 301 over trade issues with Korea, a process they subsequently withdrew. Despite withdrawing that petition, the two investment groups say they will continue to pursue Investor-State Dispute Settlement (ISDS) claims against the Korean government.
For U.S. readers, Coupang matters as a prominent example of a U.S.-listed tech-ecommerce firm with deep ties to Korea’s fast-growing digital economy. The involvement of U.S.-based funds in Coupang underscores the cross-border nature of ownership and governance for major Korean tech firms that are publicly traded in the United States.
ISDS provisions allow foreign investors to sue governments over alleged discriminatory or unfair treatment, a framework often cited in disputes between multinational investors and host governments. The ongoing ISDS posture, alongside the withdrawal of the 301 petition, highlights the high-stakes friction that can arise between policy decisions in Korea and protections for foreign investors with sizable stakes in Korean companies.
Coupang has grown into one of Korea’s leading e-commerce and logistics platforms, and its U.S.-listed parent draws attention from international markets because its performance can influence capital flows, technology investment, and consumer-facing logistics in Asia, with spillover effects for American investors and suppliers.
As these movements unfold, investors will be watching for any further ISDS developments, Korea’s regulatory responses, and how these dynamics might affect Coupang’s governance, stock volatility, and broader U.S.-Korea economic and policy relations. The numbers cited are from the SEC filing and reflect stock prices and holdings as of the 13th of the month.