National Pension Service Acquires 9.84% Stake in Kumho Petrochemical, Becomes Major Shareholder via Small On-Market Purchase


  • National Pension Service (NPS) reported a 9.84% stake (2,772,299 shares) in Kumho Petrochemical, becoming a new major shareholder (≥10% threshold). Holdings include 2,520,442 common shares and 251,857 preferred shares.
  • On May 26, 2026, NPS purchased 5,000 common shares at KRW 140,479 per share (a ~6.2% premium to the current price of KRW 132,300) via on-market trade, meeting the major shareholder criterion.
  • Total outstanding shares are 28,180,811. Although the 9.84% stake is slightly below the statutory 10% major shareholder threshold, the disclosure classifies NPS as a major shareholder.
  • [AI Summary]The stake increase signals institutional confidence, with the premium purchase likely supporting the stock favorably. However, the small buy size limits short-term impact; future additional acquisitions will be key.

KOSPI Filing Information


  • Filing: Report on Ownership of Specific Securities by Executives and Major Shareholders
  • Company: KUMHO PETRO CHEMICAL (011780)
  • Submission: National Pension Service
  • Receipt: 06-01-2026