Korea Zinc Control Battle — MBK Partners & Young Poong vs. Chairman Choi
Korea's Largest Tender Offer · Two Stock Surges · A U.S. Government White Knight Closes 70 Years of Dual-Family Governance
Background
Korea Zinc was co-founded in 1949 by Choi Ki-ho and Jang Byeong-hee as a joint venture between two families — the Choi family (managing Korea Zinc operations) and the Jang family (controlling Young Poong Group). For over 70 years, both families shared board representation and co-governed the company. Korea Zinc holds roughly 10% of global zinc smelting share (world #1) and retains advanced refining capabilities for lead, silver, gold, indium and germanium — making it one of Korea's most strategic non-ferrous players.
The dual-family arrangement began to fracture after Yun-bum Choi became chairman in 2022. Chairman Choi launched the 'Troika Drive' — large-scale investments into EV battery materials, green hydrogen and solar components, financed from Korea Zinc's strong zinc-smelting cash flows. Young Poong (Jang family, 25.42%), the largest shareholder but with no operating control, grew increasingly opposed to the capex burn.
Round 1 (Sep 2024 – Mar 2025) — The Tender Offer War.
On Sep 13, 2024 MBK Partners and Young Poong jointly launched a hostile tender offer at ₩660,000/share, targeting a 14.61% additional stake to push the coalition past 40% and secure a board majority. Korea Zinc's board retaliated nine days later with a counter-buyback at ₩830,000/share — 26% above MBK. With both bids competing in the open market, the stock rocketed from ₩515,000 to ₩1,630,000 (+217%) in six weeks. MBK acquired 14.17% (coalition ~40.97%) but lost all four director seats at the January 2025 EGM, and on Mar 28, 2025 the court dismissed MBK's injunction blocking treasury-share cancellation. Round 1 closed with Chairman Choi's defense intact.
Round 2 (Apr 2025 – Apr 2026) — A U.S. Government White Knight.
Markets assumed the contest was over. Instead, on Dec 15, 2025 Korea Zinc announced a ₩2.85 trillion private placement to "Crucible JV LLC" — a joint venture co-sponsored by the U.S. Department of Defense, Department of Commerce, and strategic investors. The JV took ~10.59% of Korea Zinc through 2.2 million new shares at ₩1,290,000 each. Simultaneously, Korea Zinc announced an ₩11 trillion ($7.4B) fully integrated non-ferrous smelter on the Nyrstar site in Tennessee (groundbreaking 2027, operations 2029). The plan slotted directly into the Trump-2 administration's critical-minerals security strategy.
Legal and Boardroom Endgame.
Young Poong and MBK sought an injunction to block the new share issuance; the Seoul Central District Court dismissed it on Dec 24, 2025. In January 2026, Korea Zinc's Australian subsidiary SMC (Sun Metals Corporation) acquired 10.33% of Young Poong, triggering Article 369(3) of the Commercial Code — a cross-shareholding rule that automatically disenfranchises Young Poong's Korea Zinc votes. The March 24, 2026 AGM confirmed Chairman Choi's re-election plus a Crucible JV-nominated director (Walter McLallen); MBK/Young Poong won two seats through cumulative voting (board now 9:5), but their proposed stock split was voted down. On April 2, 2026, the Supreme Court issued its final ruling upholding the cross-shareholding mechanism — effectively ending the 18-month dispute. The stock peaked at ₩1,910,000 intraday on Dec 15, 2025 and stabilized around ₩1,528,000 by mid-May 2026.
Deal Summary
- Deal Value
- Round 1 ~₩2.4T tender offers + Round 2 ₩2.85T Crucible JV PIPE
- Acquirer
- MBK Partners + Young Poong → defeated by U.S. DoD/DoC Crucible JV (white knight)
- Target
- Korea Zinc Co., Ltd.
- Announced
- Sep 13, 2024
- Closed
- Apr 2, 2026 (Supreme Court final ruling)
- Country
- South Korea
Executive Summary
- [Round 1 Tender Offer War:] MBK Partners + Young Poong launched a hostile bid at ₩660,000/share for a 14.61% stake on Sep 13, 2024; Korea Zinc countered nine days later with a defensive treasury buyback at ₩830,000/share — Korea's largest-ever control battle began.
- Dueling bids drove the stock from ₩515,000 to ₩1,630,000 (+217%) in six weeks. MBK acquired 14.17% (coalition ~40.97%); all four MBK-backed director nominees were defeated at the January 2025 EGM.
- Round 1 closed Mar 28, 2025 when the court dismissed MBK's final injunction on treasury-share cancellation. Choi's defense held — but MBK/Young Poong retained ~41%, leaving the contest open.
- [Round 2 — A U.S. Government White Knight (Dec 15, 2025):] Korea Zinc issued ₩2.85 trillion in new shares (2.2M shares @ ₩1,290,000) to Crucible JV LLC — a joint venture sponsored by the U.S. Department of Defense, the Department of Commerce, and strategic investors. The JV took ~10.59% of Korea Zinc; MBK/Young Poong were diluted to ~36%.
- [₩11 Trillion Tennessee Smelter:] On the same day, Korea Zinc announced an ₩11T ($7.4B) fully integrated non-ferrous metals smelter on the Nyrstar site in Tennessee (groundbreaking 2027, operations 2029) — directly aligned with the Trump-2 critical-minerals security strategy. Korea Zinc was repositioned from a Korean non-ferrous company to a Korea-U.S. critical-minerals supply chain pillar.
- [Legal endgame:] Seoul Central District Court dismissed Young Poong/MBK's injunction on the new share issuance (Dec 24, 2025). SMC (Korea Zinc's Australian subsidiary) acquired 10.33% of Young Poong, triggering Article 369(3) cross-shareholding rules that automatically restricted Young Poong's voting rights. The Supreme Court confirmed the mechanism on April 2, 2026 — ending the 18-month dispute.
- [March 24, 2026 AGM:] Chairman Choi re-elected with Crucible JV-nominated director Walter McLallen joining the board. MBK/Young Poong gained two seats via cumulative voting (board now 9:5). Their proposed stock split was rejected.
- [Performance and price:] FY2024 revenue ₩12.08T · operating profit ₩736B (+24.5%/+11.5% YoY), FY2025 operating profit ~₩1.2T (44 consecutive years and 100 consecutive quarters of profitability), 1Q 2026 revenue ₩6.07T · operating profit ₩746B (record quarterly highs). Stock at ~₩1,528,000 in May 2026 (+197% vs. pre-contest).
Industry Overview
Korea Zinc operates in the global non-ferrous metals smelting industry, specifically zinc and lead refining. Zinc is the fourth most-used metal globally, critical for galvanizing steel (construction, automotive), die casting, and battery applications. The smelting industry is highly capital-intensive, requiring large-scale roasting/sintering furnaces and complex hydrometallurgical processes.
Global Zinc Production
~13 million MT/year
Korea Zinc Market Share
~10% global zinc smelting
Key End Markets
Steel galvanizing (60%), EV batteries (growing)
Zinc Price Range (2024)
$2,400–$3,100/MT
Key Players
Company Overview: Korea Zinc Co., Ltd.
Korea Zinc operates the world's largest single-site zinc smelter at Onsan, South Korea. The company refines approximately 1.1 million metric tons of zinc annually — roughly 10% of global production. Beyond zinc and lead, Korea Zinc has long produced silver, gold, indium and germanium as byproducts. In 2025, silver and gold prices surged sharply; precious-metals revenue rose to ~65.7% of mix and underpinned record quarterly results in 1Q 2026. The 'Troika Drive' strategy — EV battery materials, green hydrogen, and solar components — has transitioned from capex burn to revenue generation, and the Dec 2025 Crucible JV repositioned Korea Zinc as a Korea-U.S. critical-minerals supply chain pillar.
Zinc Smelting Global Share
~10%
World #1 (Onsan)
FY2024 Revenue
~₩12.08T
+24.5% YoY
FY2025 Operating Profit
~₩1.2T
44 consecutive years / 100 consecutive quarters of profit
Market Cap (May 2026)
~₩32T
3× pre-contest ~₩10.5T
Control Battle Overview
This was the longest control battle in Korean M&A history at 18 months, divided into two distinct rounds. Round 1 (Sep 2024 – Mar 2025) played out on Korea's familiar capital-markets stage — dueling tender offers, EGM proxy fights, court injunctions — with the stock spiking from ₩515,000 to ₩1,630,000 (+217%) before Chairman Choi's defense held. Round 2 (Apr 2025 – Apr 2026) reset the entire game by importing an unprecedented variable: the U.S. Department of Defense as white knight. A ₩2.85 trillion private placement to Crucible JV and a separate ₩11 trillion smelter in Tennessee elevated the dispute from a Korean control contest into a Korea-U.S. critical-minerals supply chain realignment, sealed by the Supreme Court ruling of April 2, 2026.
Round 1's catalyst was the accumulated frustration of Young Poong, the largest shareholder shut out of operating control while Chairman Choi's 'Troika Drive' redirected zinc-smelting cash flows into EV materials, solar, and hydrogen. Round 2's catalyst was the unresolved overhang after Round 1: MBK and Young Poong still held ~41% of Korea Zinc, leaving the threat alive. Chairman Choi escalated from "defending the share count" to "redefining what Korea Zinc is" — and the Trump administration's critical-minerals security strategy provided the matching demand.
📈 Price Impact
Two distinct surge cycles. Round 1: ₩515K → ₩1.63M (Oct 4, 2024 +217%) → ₩640K (Mar 2025 normalization). Round 2: ₩640K → ₩1.91M (Dec 15, 2025 Crucible JV announcement +198%) → ₩1.14M (Jan 9, 2026) → ₩1.53M (May 13, 2026). Pre-contest ₩515K → May 2026 ₩1.53M = +197% over the 20-month dispute. MSCI deletion (triggered by reduced free float from the Crucible JV issuance) was offset by strong earnings (FY2025 OP ₩1.2T, 1Q 2026 record).
🗡️ Battle Timeline
Hostile Tender Offer Launched — ₩660,000/share
Without board consent, MBK and Young Poong offered ₩660,000/share (+28% to prior close) directly to Korea Zinc shareholders. Goal: acquire 14.61% more on top of Young Poong's existing 25.42% to seize board majority.
Defensive Counter-Buyback — ₩830,000/share
Korea Zinc's board announced a company-level buyback at ₩830,000 — 26% above MBK's offer — signaling shareholders to decline MBK's bid. Treasury shares acquired to be cancelled, diluting MBK+Young Poong's combined stake.
All-Time High ₩1,630,000 — 2.5× Either Bid Price
Competing bids combined with speculative demand and short-covering pushed the stock to ₩1,630,000 intraday. Both tender offers (₩660K and ₩830K) became uneconomic relative to the market price.
Tender Offer Closes — 14.17% Stake Acquired
MBK's tender offer closed, acquiring 14.17% (vs. 14.61% target). Combined with Young Poong's 25.42%, the coalition held ~40.97%. But control of the board required an EGM vote.
Injunction: Korea Zinc Blocked from Cancelling Treasury Shares
Court granted MBK's injunction preventing Korea Zinc from cancelling the treasury shares it had repurchased — halting the dilution strategy mid-execution.
EGM Victory — All MBK Director Nominees Rejected
At the Extraordinary General Meeting, all 4 MBK-backed director candidates were defeated. Incumbent directors retained. NPS (7.83%) partially supported the incumbent board — the decisive swing vote.
Round 1 Closes — Final Injunction Dismissed
Court dismissed MBK's final injunction on treasury share cancellation. Round 1 ended with Chairman Choi's defense intact — but MBK and Young Poong retained ~40.97% of Korea Zinc, keeping the threat alive into Round 2.
[[Round 2 Begins]] SMC Acquires 10.33% of Young Poong — Cross-Shareholding Triggered
Sun Metals Corporation, Korea Zinc's wholly-owned Australian subsidiary, acquired 10.33% of Young Poong on the open market. Under Article 369(3) of the Korean Commercial Code, the cross-shareholding immediately disenfranchises Young Poong's Korea Zinc votes. MBK and Young Poong filed injunctions to block the mechanism.
[₩2.85 Trillion Private Placement to U.S. DoD/DoC Crucible JV]
Korea Zinc issued 2.2 million new shares at ₩1,290,000 (total ₩2.85T) to Crucible JV LLC — a joint venture co-sponsored by the U.S. Department of Defense, the Department of Commerce, and strategic investors. The JV acquired ~10.59% of Korea Zinc, diluting the MBK+Young Poong coalition from ~40.97% to ~36%. On the same day, Korea Zinc announced an ₩11 trillion ($7.4B) fully integrated non-ferrous smelter on the Nyrstar site in Tennessee (groundbreaking 2027, operations 2029).
Young Poong/MBK Injunction Dismissed — New Share Issuance Approved
The Seoul Central District Court rejected Young Poong and MBK's request for an injunction to block the Crucible JV share issuance. The court ruled the placement served a legitimate corporate purpose (the U.S. strategic partnership) and complied with capital markets law. Effectively the decisive moment of Round 2.
AGM — Chairman Choi Re-elected, Crucible JV Director Seated (Board 9:5)
Chairman Choi re-elected as inside director. Hwang Deok-nam (outside director) and Walter McLallen (non-executive, Crucible JV-nominated) joined the board. MBK and Young Poong gained two seats via cumulative voting (Choi Yeon-seok and Lee Seon-suk), narrowing the board from 11:4 to 9:5. MBK/Young Poong's proposed stock split was rejected.
[Supreme Court Affirms Cross-Shareholding — Dispute Effectively Closed]
The Supreme Court dismissed Young Poong and MBK's final appeal, affirming that SMC's cross-shareholding restriction on Young Poong's votes is a legitimate exercise of rights under Article 369(3) of the Commercial Code. This ruling formally ended the 18-month dispute and crystallized cross-shareholding as a recognized defensive tool in Korean M&A.
MBK Exit Strategy Surfaces — Drag-Along Right Reported
Korean capital-markets press (Investchosun and others) reported MBK is exploring exit options via the drag-along right negotiated with Young Poong, potentially through a block trade or open-market disposal of the 14.17% stake. Stock at ~₩1,528,000 vs. average ~₩660K acquisition cost implies +131% mark-to-market gain — but the reputational cost of a failed hostile bid remains.
Hostile Tender Offer Launched — ₩660,000/share
Without board consent, MBK and Young Poong offered ₩660,000/share (+28% to prior close) directly to Korea Zinc shareholders. Goal: acquire 14.61% more on top of Young Poong's existing 25.42% to seize board majority.
Defensive Counter-Buyback — ₩830,000/share
Korea Zinc's board announced a company-level buyback at ₩830,000 — 26% above MBK's offer — signaling shareholders to decline MBK's bid. Treasury shares acquired to be cancelled, diluting MBK+Young Poong's combined stake.
All-Time High ₩1,630,000 — 2.5× Either Bid Price
Competing bids combined with speculative demand and short-covering pushed the stock to ₩1,630,000 intraday. Both tender offers (₩660K and ₩830K) became uneconomic relative to the market price.
Tender Offer Closes — 14.17% Stake Acquired
MBK's tender offer closed, acquiring 14.17% (vs. 14.61% target). Combined with Young Poong's 25.42%, the coalition held ~40.97%. But control of the board required an EGM vote.
Injunction: Korea Zinc Blocked from Cancelling Treasury Shares
Court granted MBK's injunction preventing Korea Zinc from cancelling the treasury shares it had repurchased — halting the dilution strategy mid-execution.
EGM Victory — All MBK Director Nominees Rejected
At the Extraordinary General Meeting, all 4 MBK-backed director candidates were defeated. Incumbent directors retained. NPS (7.83%) partially supported the incumbent board — the decisive swing vote.
Round 1 Closes — Final Injunction Dismissed
Court dismissed MBK's final injunction on treasury share cancellation. Round 1 ended with Chairman Choi's defense intact — but MBK and Young Poong retained ~40.97% of Korea Zinc, keeping the threat alive into Round 2.
[[Round 2 Begins]] SMC Acquires 10.33% of Young Poong — Cross-Shareholding Triggered
Sun Metals Corporation, Korea Zinc's wholly-owned Australian subsidiary, acquired 10.33% of Young Poong on the open market. Under Article 369(3) of the Korean Commercial Code, the cross-shareholding immediately disenfranchises Young Poong's Korea Zinc votes. MBK and Young Poong filed injunctions to block the mechanism.
[₩2.85 Trillion Private Placement to U.S. DoD/DoC Crucible JV]
Korea Zinc issued 2.2 million new shares at ₩1,290,000 (total ₩2.85T) to Crucible JV LLC — a joint venture co-sponsored by the U.S. Department of Defense, the Department of Commerce, and strategic investors. The JV acquired ~10.59% of Korea Zinc, diluting the MBK+Young Poong coalition from ~40.97% to ~36%. On the same day, Korea Zinc announced an ₩11 trillion ($7.4B) fully integrated non-ferrous smelter on the Nyrstar site in Tennessee (groundbreaking 2027, operations 2029).
Young Poong/MBK Injunction Dismissed — New Share Issuance Approved
The Seoul Central District Court rejected Young Poong and MBK's request for an injunction to block the Crucible JV share issuance. The court ruled the placement served a legitimate corporate purpose (the U.S. strategic partnership) and complied with capital markets law. Effectively the decisive moment of Round 2.
AGM — Chairman Choi Re-elected, Crucible JV Director Seated (Board 9:5)
Chairman Choi re-elected as inside director. Hwang Deok-nam (outside director) and Walter McLallen (non-executive, Crucible JV-nominated) joined the board. MBK and Young Poong gained two seats via cumulative voting (Choi Yeon-seok and Lee Seon-suk), narrowing the board from 11:4 to 9:5. MBK/Young Poong's proposed stock split was rejected.
[Supreme Court Affirms Cross-Shareholding — Dispute Effectively Closed]
The Supreme Court dismissed Young Poong and MBK's final appeal, affirming that SMC's cross-shareholding restriction on Young Poong's votes is a legitimate exercise of rights under Article 369(3) of the Commercial Code. This ruling formally ended the 18-month dispute and crystallized cross-shareholding as a recognized defensive tool in Korean M&A.
MBK Exit Strategy Surfaces — Drag-Along Right Reported
Korean capital-markets press (Investchosun and others) reported MBK is exploring exit options via the drag-along right negotiated with Young Poong, potentially through a block trade or open-market disposal of the 14.17% stake. Stock at ~₩1,528,000 vs. average ~₩660K acquisition cost implies +131% mark-to-market gain — but the reputational cost of a failed hostile bid remains.
🔩 Key Instruments
⚔️ Offense Playbook— MBK Partners + Young Poong
Round 1. Direct offer to shareholders at ₩660,000 (+28% premium), bypassing the board. Acquired 14.17% stake successfully but failed to translate into board control.
Attempted board replacement via shareholder vote with 40.97% stake base. NPS's partial support for incumbents was enough to defeat all 4 MBK director nominees.
Filed for injunction to block the Crucible JV private placement, arguing it was an improper defensive issuance. Seoul Central District Court dismissed (Dec 24, 2025); Supreme Court affirmed (Apr 2, 2026). Effectively the death of Round 2.
🛡️ Defense Playbook— Chairman Choi Yun-bum (Korea Zinc + U.S. Crucible JV)
Round 1. Counter-offer at ₩830,000 — 26% above MBK's price — to attract shareholder tender away from MBK. Treasury share cancellation was initially blocked by court but ultimately permitted.
Round 1 decisive move. Secured partial support from NPS (7.83%) and rallied ESOP and friendly shareholders to defeat all 4 MBK director nominees at the January 2025 EGM.
Round 2 decisive move (Dec 15, 2025). ₩2.85 trillion private placement to Crucible JV (sponsored by U.S. Department of Defense and Department of Commerce) gave the JV ~10.59% of Korea Zinc, diluting MBK/Young Poong from ~41% to ~36%. First-ever case in Korean M&A of an international security capital actor serving as defensive white knight, directly aligned with Trump-2 critical-minerals strategy.
January 2026: SMC acquired 10.33% of Young Poong, automatically disenfranchising Young Poong's Korea Zinc votes under Article 369(3) of the Commercial Code. Supreme Court affirmed legality on April 2, 2026.
Turning Point
2025-12-15₩2.85 Trillion Crucible JV Private Placement Announced
If Round 1's decisive moment was the EGM proxy vote, Round 2's decisive moment was the Crucible JV. On December 15, 2025, Korea Zinc issued ₩2.85 trillion in new shares to a joint venture co-sponsored by the U.S. Department of Defense and Department of Commerce, while simultaneously announcing an ₩11 trillion smelter in Tennessee aligned with Trump-2 critical-minerals security policy. MBK and Young Poong were diluted from ~41% to ~36%, the Seoul Central District Court dismissed their injunction nine days later, and what had been a Korean control contest became a Korea-U.S. supply chain realignment.
Final Verdict
Defender WinsKorea Zinc / Chairman Choi Yun-bum + U.S. Crucible JV — Control Defense + Strategic Asset Elevation
Margin: Post-Crucible JV dilution: Choi faction + Crucible JV + friendly ~51% vs. MBK + Young Poong ~36% (estimated)
MBK Partners successfully acquired 14.17% in Round 1 but was forced into decisive retreat in Round 2 by the U.S. government white knight. Korea Zinc was repositioned from a Korean non-ferrous company into a pillar of the Korea-U.S. critical-minerals supply chain. The first case of a foreign government serving as a white knight in Korean M&A history, likely to be the reference precedent for future defense in Korean strategic industries.
Deal Structure
The battle involved two simultaneous public bids. MBK+Young Poong offered ₩660,000/share for 14.61% (total ~₩2.4tr). Korea Zinc countered with ₩830,000/share buyback for ~20%. MBK acquired 14.17%; Korea Zinc's treasury cancellation was blocked by court. Final resolution: EGM Jan 2025 + court ruling Mar 2025.
Pre-Deal
Young Poong Group
Jang family 25.42%
Korea Zinc
World #1 zinc smelter
Chairman Choi
Management 11.73%
NPS
8.68% swing vote
Post-Deal
Young Poong + MBK
~36% (diluted, voting rights restricted)
Korea Zinc
Korea-U.S. strategic asset
Chairman Choi + treasury
~46%
U.S. Crucible JV
~10.59% (white knight)
NPS
~7%
Key Terms
Advisors
Top-tier Korean and global advisors were deployed on both sides of Korea's most complex M&A battle.
MBK Partners + Young Poong Advisors
JP Morgan
Financial AdvisorLead financial advisor to MBK on tender offer structuring
Citigroup Global Markets
Financial AdvisorCo-advisor on tender offer execution
Kim & Chang
Legal AdvisorLead Korean law firm for MBK on regulatory and M&A matters
Korea Zinc (Defense) Advisors
Samsung Securities
Financial AdvisorLead financial advisor on defensive buyback structuring
Credit Suisse
Financial AdvisorInternational advisor on defense strategy
Bae, Kim & Lee LLC
Legal AdvisorLead law firm for Korea Zinc on defense and court filings
Financials
K-IFRS consolidated basis. FY2025 figures are preliminary disclosures. FY2024 operating profit declined due to one-time contest-related costs and treasury-share repurchase expenses; FY2025 recovered on the back of precious-metals price strength and Troika Drive revenue ramp.
| Item | 2021 | 2022 | 2023 | 2024 | 2025 |
|---|---|---|---|---|---|
| Revenue | KRW 7,820,000(millions) | KRW 9,450,000(millions) | KRW 10,120,000(millions) | KRW 12,082,800(millions) | KRW 13,800,000(millions) |
| COGS | KRW 6,240,000(millions) | KRW 7,580,000(millions) | KRW 8,240,000(millions) | KRW 9,850,000(millions) | KRW 11,000,000(millions) |
| Gross Profit | KRW 1,580,000(millions) | KRW 1,870,000(millions) | KRW 1,880,000(millions) | KRW 2,232,800(millions) | KRW 2,800,000(millions) |
| SG&A | KRW 380,000(millions) | KRW 410,000(millions) | KRW 380,000(millions) | KRW 430,000(millions) | KRW 450,000(millions) |
| Operating Income | KRW 1,200,000(millions) | KRW 1,460,000(millions) | KRW 1,500,000(millions) | KRW 736,100(millions) | KRW 1,200,000(millions) |
| EBITDA | KRW 1,680,000(millions) | KRW 1,990,000(millions) | KRW 2,010,000(millions) | KRW 1,290,000(millions) | KRW 1,850,000(millions) |
| EBITDA Margin | 21.5% | 21.1% | 19.9% | 10.7% | 13.4% |
Valuation
The price trajectory of this 20-month dispute traces "two surge cycles plus one strategic-asset re-rating." Round 1 dueling tender offers pushed the stock ₩515K → ₩1.63M (+217%); Round 2's U.S. white knight pushed ₩640K → ₩1.91M (+198%). The ~₩1.53M level at May 2026 (+197% vs. pre-contest) is the market's pricing of Korea Zinc's new identity as a pillar of the Korea-U.S. critical-minerals supply chain.
| Metric | Value | Notes |
|---|---|---|
| Pre-Contest Price (Sep 12, 2024) | ₩515,000 | Day before Round 1 launch |
| MBK Tender Offer Price | ₩660,000 | +28% premium |
| Korea Zinc Defensive Buyback Price | ₩830,000 | +61% premium |
| Round 1 Peak (Oct 4, 2024) | ₩1,630,000 | +217% in 6 weeks |
| Post-Round 1 Price (Mar 2025) | ₩640,000 | Premium evaporates |
| Crucible JV Subscription Price (Dec 2025) | ₩1,290,000 | +27% vs prior close ₩1,015,000 |
| Round 2 Peak (Dec 15, 2025) | ₩1,910,000 | +198% vs Round 1 close |
| Current Price (May 13, 2026) | ~₩1,528,000 | +197% vs pre-contest |
| Round 1 MBK/YP Total Investment | ~₩900B | 14.17% × ₩660K average |
| Round 2 Crucible JV Issuance | ~₩2.85T | 2.2M shares × ₩1.29M |
| Tennessee Smelter Investment Plan | ~₩11T ($7.4B) | Groundbreaking 2027, operations 2029 |
Stock prices and investment figures are based on public filings and press reports. Some figures are estimates marked with "~" or "approximately."
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Deal Rationale
MBK Partners + Young Poong — Why They Attacked and Why They Lost
- [Round 1 attack logic]: Korea Zinc generates ~₩2 trillion annual EBITDA from world-leading zinc smelting — a PE-optimal cash flow profile for a leveraged buyout and dividend/asset-sale return extraction.
- [Largest shareholder lever]: Young Poong (25.42%) had 70 years of governance frustration as the largest shareholder shut out of operating control. The narrative "we are exercising the legitimate rights of the controlling shareholder" provided political cover.
- [Partial Round 1 success]: Acquired 14.17% (coalition ~40.97%), the single largest stake block in the Korean capital market. But translating that into board control failed at the January 2025 EGM.
- [Round 2 decisive defeat]: A U.S. Department of Defense white knight was nowhere in the typical PE playbook. Injunctions against the new share issuance were dismissed by the Seoul Central District Court and the Supreme Court. SMC's cross-shareholding then restricted Young Poong's votes.
- [Current standing]: MBK's 14.17% stake is mark-to-market positive (₩660K average → ~₩1.53M = +131%), but the reputational cost of a failed hostile bid is permanent. Drag-along exit via block trade is reportedly under consideration (Investchosun, 2025-2026).
Chairman Choi — How He Won Both Rounds
- [Round 1 defense]: Counter-buyback at ₩830,000 nine days after MBK's bid — the fastest defensive tender offer in Korean history. EGM proxy mobilization defeated all four MBK director nominees through NPS partial support.
- [The Round 2 pivot]: With MBK/Young Poong still holding ~41% after Round 1, defense alone was insufficient. The strategic decision was to escalate from "defending the share count" to "redefining what Korea Zinc is" — partnering with the U.S. government.
- [The U.S. white knight]: ₩2.85 trillion private placement to Crucible JV (DoD/DoC + strategic investors) on Dec 15, 2025, paired with the ₩11 trillion Tennessee smelter plan. The first case in Korean M&A history of international security capital arriving as a white knight.
- [Cross-shareholding mechanism]: SMC's 10.33% stake in Young Poong (Jan 2026) triggered Article 369(3) of the Commercial Code — automatically restricting Young Poong's votes. Supreme Court affirmed legality on April 2, 2026.
- [Strategic asset elevation]: Not just retaining control but repositioning Korea Zinc as a pillar of the Korea-U.S. critical-minerals supply chain, perfectly aligned with the Trump-2 critical-minerals strategy. The Korean non-ferrous incumbent became a global strategic asset.
- [Earnings tailwind]: FY2025 OP ~₩1.2T (44 consecutive years of profit), 1Q 2026 record (revenue ₩6.07T, OP ₩746B) — defense success plus earnings strength drove the +197% post-contest move.
Post-Deal Assessment (May 2026 as of)
The 18-month dispute formally closed on April 2, 2026 when the Supreme Court affirmed the legality of the cross-shareholding mechanism restricting Young Poong's votes. The outcome is more than a control-defense story. Round 1 (Sep 2024–Mar 2025) repelled the PE hostile bid through dueling tender offers, EGM proxy fight, and court injunctions. Round 2 (Apr 2025–Apr 2026) elevated Korea Zinc into a Korea-U.S. critical-minerals supply chain pillar via the Crucible JV partnership with the U.S. Department of Defense and Department of Commerce. With the ₩11 trillion Tennessee smelter, FY2025 OP of ₩1.2 trillion, record 1Q 2026, and stock +197% vs. pre-contest, the market has priced in Korea Zinc's promotion to a larger stage. The first case in Korean M&A history of a foreign government serving as defensive white knight — likely the reference precedent for control defense in Korea's strategic industries.
Positives
- [Round 1]: First successful defensive treasury buyback in Korea — EGM proxy victory plus dismissal of MBK's final injunction (Mar 28, 2025) repelled the PE hostile bid.
- [Round 2]: U.S. DoD/DoC Crucible JV ₩2.85 trillion private placement + ₩11 trillion Tennessee smelter — the first foreign-government white knight in Korean M&A history.
- [Legal certainty]: Injunction dismissals by Seoul Central District Court (Dec 24, 2025) + Supreme Court affirmation of cross-shareholding (Apr 2, 2026) eliminated remaining legal uncertainty.
- [Operational performance]: FY2024 revenue ₩12T, FY2025 OP ₩1.2T (44 consecutive years profit), 1Q 2026 record quarterly performance — earnings outpaced contest-related concerns.
- [Strategic asset elevation]: Repositioned from Korean non-ferrous incumbent to pillar of the Korea-U.S. critical-minerals supply chain, perfectly aligned with the Trump-2 critical-minerals security strategy.
- [Stock performance]: Pre-contest ₩515,000 → May 2026 ~₩1,528,000 (+197%). MSCI deletion (from reduced free float) offset by strong earnings and the new strategic narrative.
Risks & Concerns
- [MBK/Young Poong residual stake ~36%]: Voting rights restricted but the stake remains — possibility of fresh legal challenges to the SMC cross-shareholding structure.
- [MBK exit strategy]: Drag-along right on the 14.17% stake could create a short-term supply shock if a block trade or open-market sale is executed.
- [U.S. political variable]: Any change to the Trump-2 critical-minerals strategy or under a subsequent administration could trigger a re-rating of the Crucible JV's value.
- [MSCI deletion impact]: Reduced free float from the Crucible JV issuance triggered MSCI exclusion — expect ongoing passive-flow turbulence and foreign-investor volatility.
- [Mandatory tender offer legislation]: The Capital Markets Act amendment (25% acquisition threshold triggers mandatory 50%+1 share tender, 1-year grace period) was published for legislative comment in Jan–Apr 2026. If the bill becomes law, future PE hostile bids of this structure will become difficult — a structural change in the Korean PE market.
This announcement appears as a matter of record only
MBK Partners + Young Poong (Round 1 attackers)
Acquirer
Korea Zinc Co., Ltd. — U.S. Crucible JV White Knight
Target
Korea Zinc 18-Month Control Battle — From PE Hostile Bid to U.S. Government White Knight
Transaction Size
Round 1 ~₩2.4T + Round 2 ~₩2.85T new shares
Round 1 ~$1.75B tender offer + Round 2 ~$2.1B PIPE
EV / EBITDA
Defense Won
Multiple
Closed
Apr 2026 (Supreme Court final ruling)
Deal Date
Editor's Note
The Korea Zinc case carries two distinct meanings for Korean capital markets. First, Round 1 was the largest control-defense case on Korea's traditional capital-markets stage — defensive tender offer, EGM, court injunction — and it accelerated debate on the Capital Markets Act and tender offer regulation. Second, Round 2 was the first time an international security capital actor appeared as a defensive instrument in Korean M&A, elevating a pure PE dispute into a Korea-U.S. critical-minerals supply chain realignment. The lesson: control defense in Korea's strategic industries can no longer be resolved within the domestic capital market alone. Reviewed as of May 2026.
Key Concepts in This Deal
A publicly announced offer to purchase shares directly from shareholders at a premium, bypassing the target's board — the central mechanism of MBK's Round 1 attack on Korea Zinc.
A company repurchasing its own shares at a price above the hostile bid, competing for the same shares and signaling intrinsic value. Korea Zinc's ₩830,000 counter-buyback was the Round 1 defining weapon.
A third-party investor that emerges as a friendly counterparty to defend against a hostile bid. In Round 2, Korea Zinc's white knight was the U.S. Department of Defense / Department of Commerce-sponsored Crucible JV — the first case of an international security capital actor as defensive white knight in Korean M&A.
An issuance of new shares to a specific third party (not existing shareholders). Korea Zinc's ₩2.85 trillion issuance to the Crucible JV diluted MBK + Young Poong from ~41% to ~36%.
Under Article 369(3) of the Korean Commercial Code, when Company A holds ≥10% of Company B, Company B's voting rights in Company A are automatically restricted. SMC (Korea Zinc's Australian subsidiary) acquired 10.33% of Young Poong, neutralizing Young Poong's Korea Zinc votes. The Supreme Court affirmed legality on April 2, 2026.
A policy framework treating non-ferrous metals and rare earths needed for semiconductors, batteries, and defense as national security assets. Central to the Trump-2 administration's strategy and the basis for the Crucible JV.
A campaign to replace board directors at a shareholder meeting. Round 1's decisive moment: MBK + Young Poong forced an Extraordinary General Meeting with ~41% combined — and lost all four director nominees when NPS sided with incumbents.
A private equity fund using a leveraged tender offer to acquire control of a public company. MBK's Korea Zinc bid is the defining Asian precedent for PE-driven control contests — and the defining case for how they can fail.
A right allowing one co-investor to force fellow investors to sell along when the first investor exits. MBK reportedly holds a drag-along over Young Poong, making it the key tool of MBK's potential exit strategy.
A regulation requiring the acquirer of a certain threshold stake (e.g., 25%) to make a tender offer for a minimum further percentage (e.g., 50%+1 share). The Korea Financial Services Commission published an implementing rule for public comment in Jan–Apr 2026. If enacted, similar PE hostile bids in the future will become significantly harder.
Frequently Asked Questions
Why did MBK Partners want to acquire Korea Zinc?
Korea Zinc is the world #1 zinc smelter (~10% global share) with annual EBITDA of ~₩2 trillion. From a PE perspective, this was an ideal LBO target — strong free cash flow, leverage capacity, and potential for non-core asset sales. MBK also identified the structural opportunity: Young Poong was the largest shareholder (25.42%) but had no operating control. By partnering with the frustrated controlling family, MBK could acquire control at a relatively low share count.
Why did Korea Zinc's stock surge twice?
Two distinct mechanisms. [Round 1 (Sep–Oct 2024)]: MBK's ₩660,000 bid and Korea Zinc's ₩830,000 counter-bid competed simultaneously. Shareholders held out for higher offers, pushing the price to ₩1,630,000 (+217%). Once Round 1 resolved in January 2025, the premium evaporated and the stock retraced to ₩640,000. [Round 2 (Dec 2025)]: The U.S. white knight wasn't a simple price-floor event — it elevated Korea Zinc's narrative from "Korean non-ferrous incumbent" to "pillar of the Korea-U.S. critical-minerals supply chain." The stock spiked to ₩1,910,000 on Dec 15, 2025 and stabilized at ~₩1,528,000 by May 2026 (+197% vs. pre-contest).
Why did the U.S. Department of Defense invest in a Korean non-ferrous company?
It's a direct outcome of the Trump-2 administration's critical-minerals security strategy. The U.S. seeks to reduce China dependence in non-ferrous metals and rare earths needed for semiconductors, batteries, and defense. Korea Zinc fits the strategy on three dimensions: (1) world #1 zinc smelter, (2) advanced precious-metals and rare-metals refining (silver, gold, indium, germanium), (3) global resource assets including Sun Metals Corporation in Australia. The Crucible JV — co-sponsored by DoD, DoC, and strategic investors — took ₩2.85 trillion in new shares and simultaneously announced an ₩11 trillion smelter on the Nyrstar site in Tennessee. The first case of a foreign government serving as defensive white knight in Korean M&A history.
Why is restricting Young Poong's voting rights through SMC legally valid?
Article 369(3) of the Korean Commercial Code stipulates that if Company A holds 10% or more of Company B, Company B's voting rights in Company A's shareholder meetings are automatically restricted. When SMC (Korea Zinc's 100% Australian subsidiary) acquired 10.33% of Young Poong, the rule automatically restricted Young Poong's Korea Zinc votes. Young Poong and MBK challenged the structure as "defensive circumvention," but the Seoul Central District Court (Dec 2025), Seoul High Court, and Supreme Court (Apr 2, 2026) all ruled it a legitimate exercise of rights. The cross-shareholding rule, long dormant in Korean commercial law, was crystallized as an active defensive tool in this case.
What role did the National Pension Service play?
The NPS held 8.68% of Korea Zinc at the start of Round 1 and was the swing voter at the January 2025 EGM. With the Choi management coalition (~46%) and the MBK+Young Poong coalition (~41%) closely matched, NPS's decision to partially support incumbent directors provided the decisive margin. This was the first major application of Korea's 2016 Stewardship Code in a hostile control contest. NPS maintained a friendly stance through the March 2026 AGM as well.
Did MBK Partners lose money on this deal?
[Control objective]: Complete failure. Round 1 acquired 14.17% but couldn't translate it into a board majority; Round 2 was overwhelmed by the U.S. government white knight and the cross-shareholding restriction on Young Poong. [Financial position]: Mark-to-market positive. The 14.17% stake was acquired at an average of ~₩660,000; the May 2026 price of ~₩1,528,000 implies +131% mark-to-market gain. [Exit strategy]: Per Investchosun and other capital-markets press, MBK is exploring exit via the drag-along right with Young Poong, potentially through a block trade or open-market disposal. The financial outcome may not be a loss — but the reputational cost of a failed hostile bid is unrecoverable for a PE franchise.
What are the regulatory consequences of this case for Korean M&A?
Several reform threads emerged. [Tender offer regulation]: Tighter rules for competing tender offers, and clearer scope and limits for defensive treasury buybacks. [Mandatory Tender Offer rule]: The Capital Markets Act amendment (25% acquisition threshold triggers mandatory 50%+1 share tender, 1-year grace period) was published for public comment in Jan–Apr 2026. If the bill becomes law, similar PE hostile bids will become structurally difficult. [Cross-shareholding as defense]: The Supreme Court's April 2026 ruling confirms cross-shareholding as a legitimate defensive tool. [International security capital]: A new defensive avenue is open — foreign government participation in strategic-industry control defense.
What did the 18-month battle leave for Korean capital markets?
One line summary: "Control defense in Korea's strategic industries can no longer be resolved within the domestic capital market alone." Round 1's defensive tender offer, EGM proxy fight, and court injunctions were all familiar instruments of the Korean capital market. Round 2's U.S. DoD white knight, ₩11 trillion Tennessee smelter, and Trump-2 critical-minerals alignment are completely new instruments Korean M&A had never seen. Going forward, in strategic industries like semiconductors, batteries, defense, and materials, "international security capital" defense may become a new standard playbook. The Korea Zinc case will be the first reference precedent.
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Sources & Notes
- [1]MBK Partners + Young Poong joint tender offer announcement, FSS DART (Sep 13, 2024)
- [2]Korea Zinc board resolution — defensive treasury buyback at ₩830,000/share, DART (Sep 23, 2024)
- [3]Seoul Central District Court injunction blocking Korea Zinc treasury share cancellation (Oct 18, 2024)
- [4]Korea Zinc Extraordinary General Meeting results, DART (Jan 23, 2025)
- [5]Seoul High Court dismissal of MBK Partners' final injunction bid (Mar 28, 2025)
- [6]Korea Zinc IR — U.S. Smelter Investment Announcement (Dec 15, 2025)
- [7]DART — Crucible JV private placement decision (Dec 15, 2025, 2.2M new shares at ₩1,290,000)
- [8]Seoul Central District Court — Young Poong/MBK injunction against new share issuance dismissed (Dec 24, 2025)
- [9]Supreme Court of Korea — Final ruling affirming legality of cross-shareholding voting restriction (Apr 2, 2026)
- [10]Korea Zinc 2026 Annual General Meeting results, DART (Mar 24, 2026)
- [11]Korea Zinc Annual Reports FY2021–FY2024 + FY2025 preliminary results disclosures (DART)
- [12]Korea Zinc 1Q 2026 preliminary operating results — revenue ₩6.07T, operating profit ₩746B (May 2026)
- [13]Korea Financial Services Commission — Mandatory Tender Offer rule, Capital Markets Act amendment public comment (Jan 30 – Mar 11, 2026 and Mar 18 – Apr 7, 2026)
- [14]Investchosun — Crucible JV ₩2.85T private placement (Dec 15, 2025)
- [15]KED Global — Seoul court rejects MBK bid to block share sale (Dec 24, 2025)
- [16]Law Times — Supreme Court affirms Young Poong voting rights restriction (Apr 2026)
- [17]Korea Economic Daily, Maeil Business, Chosun Ilbo, Aju Business, Herald Economy, Money Today — coverage (Sep 2024 – May 2026)
- [18]Korea Economic Daily (한국경제), Maeil Business News (매일경제) — Korea Zinc battle coverage (September 2024 – May 2026)