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MBK, YoungPoong seek court injunction to block Korea Zinc’s share sale plan

By Thomson Reuters Dec 15, 2025 | 10:53 PM

By Heejin Kim and Heekyong Yang

SEOUL, Dec 16 (Reuters) – South Korean private equity firm MBK Partners and metal smelter YoungPoong Corp have filed for an injunction at a local court ‍to block Korea Zinc’s share sale plan to fund the construction of a smelter in the U.S., MBK said in a statement on Tuesday.

Korea Zinc said on Monday it would build a $7.4 billion critical minerals refinery in Tennessee that will be funded largely by Washington.

Shares in Korea Zinc fell ‌13% at 0337 GMT following news of the ‌planned injunction.

The statement said MBK and YoungPoong – both major shareholders of Korea Zinc – were not opposed to the plan to build the smelter, but objected to issuing new shares to designated investors to raise funds.

MBK said the ​move was intended to tighten Korea Zinc Chairman Yun B. Choi’s control over the company.

Korea Zinc also did not offer key information ‍and sufficient time to board members ​to look into the investment plan ahead of Monday’s ​board meeting, the statement said.

A Korea Zinc spokesperson did not immediately respond ‍to a request for a comment on the planed injunction.

The world’s largest zinc smelter has been embroiled in a bitter feud among founding families over control of the zinc empire.

YoungPoong and MBK have been attempting to wrest control from the current management led by ‍Choi, amassing a combined 44% stake to become the largest shareholders, according to a November filing and LSEG data.

Korea Zinc’s deal with the U.S. government ‍means the company ‍has been chosen as a key partner in ​Washington’s push to build new supply chains for critical ​minerals ⁠and reduce reliance on China, analysts at Seoul-based ‌Shinhan Securities Co. said in a note published on Tuesday.

The partnership with the U.S. government also gives a strong justification for the current management to maintain control, as they can argue the plan supports the U.S.-South Korea alliance and broader economic security, the note said.

(Reporting by Heejin Kim, Heekyong YangEditing ⁠by Ed Davies)