Proxy adviser SustainBest backs five-director Korea Zinc slate, opposes MBK/YoungPoong nominees
SustainBest released its proxy guidance ahead of Korea Zinc’s (Korea Zinc Co., Ltd.) annual general meeting on the 24th, urging investors to reelect chairman Choi Yun-beom as an inside director and to oppose all four nominees put forward by MBK Partners and YoungPoong. The advisory also recommended voting in favor of Hwang Deuk-nam as an outside director candidate, and to approve Kim Bo-young for the audit committee, as well as Im Min-ho, an outside director who would join the audit committee. In addition, SustainBest supported Crusable JV’s independent non-executive director candidate, Walter Field McLallen.
The four candidates recommended by MBK Partners and YoungPoong—Park Byung-wook and Choi Yeon-seok (both listed as outside non-executive directors) and Choi Byung-il and Lee Seon-sook (outside directors)—were all opposed by SustainBest in its report released on the 17th. The firm framed its opposition in the context of governance stability and long-term value.
SustainBest also weighed the size of the board, saying that at this moment it makes more sense to pursue a five-director slate rather than a six-director slate. It argued that preserving management continuity is more rational for long-term value, given Korea Zinc’s ongoing global competitive efforts in its core nonferrous metal refining business and its long-range strategic projects.
The report warned that the more pronounced risk to long-term value would come from MBK and YoungPoong, rather than from the incumbent management. It suggested that a potential management change could disrupt strategic continuity and raise execution risk for major investments and overseas programs. SustainBest highlighted the environment and safety track record as a concern area for YoungPoong, and questioned MBK’s private-equity perspective as possibly oriented toward shorter-term financial returns.
In assessing performance, SustainBest noted a contrast: Korea Zinc has shown sales growth and stable profitability in the past three years, whereas YoungPoong experienced declining sales and weaker profitability over the same period. The recommendation therefore favored continuing the current management team’s trajectory rather than pursuing a leadership overhaul.
Beyond board composition, SustainBest backed several governance improvements proposed by the incumbent board. These included expanding the audit committee through separate election, formalizing minority shareholder protections in the bylaws, introducing electronic general meetings, and clarifying the criteria for independent directors, including a name-change to reflect governance changes. The report framed the audit-committee expansion as a move to reduce board stalemate and improve governance stability.
A Korea Zinc spokesperson cited the advisory’s focus on management continuity and long-term strategy as a central rationale for supporting the five-director slate and governance reforms. The company said it would continue engaging with market participants to strengthen governance and shareholder value, signaling an openness to ongoing governance enhancements.
Global proxy advisers also weighed in. Glass Lewis, the Korea ESG Research Institute, Korea’s Voting Rights Advisory, and the Korea ESG Evaluation Institute backed Korea Zinc’s proposed nominees and major governance changes, including the five-director slate and the expanded, separately elected audit committee. ISS and Korea ESG Standard Foundation were also noted as recommending the five-director slate and the enhanced audit-committee framework. The convergence from multiple advisory firms underscores a broader international emphasis on governance stability and long-term value creation in Korea’s listed corporates.
Why this matters for U.S. readers: Korea Zinc’s governance and leadership decisions can influence its ability to secure long-term financing, execute large-scale investments, and manage supply chains for base metals used in manufacturing, electronics, and infrastructure. Stability in governance reduces execution risk for overseas projects and potential cross-border partnerships, which can impact metal pricing, availability, and the reliability of critical inputs for American industry and defense-related supply chains. The outcome also signals how Korean corporate governance reforms are evolving in ways that could affect investor confidence and capital flows into the region.