MakinaRocks' largest shareholder Seongho Yoon files blockholding report upon KOSDAQ listing... stable management control


  • First blockholding report upon KOSDAQ listing: CEO Seongho Yoon and 5 specially related persons (Sangwoo Shim, Yongseop Im, Jaehyuk Lee, Minsu Park, Youngsin Heo) reported a total of 5,887,064 shares (33.56% stake).
  • Yoon holds 1,824,000 shares (10.40%) and has entered into a voting agreement with co-holders Shim (6.93%), Im (6.93%), and Lee (6.96%) for 3 years from listing, ensuring stable management control.
  • Park (1.65%) and Heo (0.69%) have their shares locked up for 1 year from listing (mandatory holding), restricting short-term sales.
  • Voting-only share ratio is 32.82%; including potential shares (stock options, etc.) of 129,244 shares, total blockholding ratio is 33.56%.
  • [AI Comprehensive Analysis]This report is a legal requirement due to the new KOSDAQ listing, with no capital raising or equity changes directly affecting shareholder value, thus neutral for stock price. However, stable stake by key management reduces the likelihood of a control dispute, which is a positive factor.

KOSDAQ Filing Information


  • Filing: Report on Large Shareholding (General)
  • Company: MakinaRocks (477850)
  • Submission: Seongho Yoon
  • Receipt: 05-27-2026