Largest shareholder Jongseon Jeong increases pledged shares from 9.50% to 11.54% via new stock pledge contract, signaling mild financial pressure


  • Reason for filing: Largest shareholder Jongseon Jeong repaid the existing stock pledge (2.3M shares, 9.50%) and entered a new pledge (2.8M shares, 11.54%), increasing pledged shares by 0.5M shares.
  • New pledge details: 2,800,000 shares (11.54% ownership), loan amount 3.15B KRW, interest rate 12.0%, term from May 28, 2026 to June 26, 2026 (approx. 1 month), collateral maintenance ratio 160%.
  • No change in total holdings: The reporter and special relations collectively hold 3,807,031 shares (15.69%), unchanged from prior report, so no direct impact on management control.
  • Investment risk: The short-term high-interest pledge could trigger margin calls if the stock price drops sharply, but current LTV of ~46.5% is well below the 160% maintenance ratio. Limited direct impact on minority shareholders.
  • AI Comprehensive Analysis: This disclosure reflects the largest shareholder's personal financing activity. The increase in pledged shares is modest and ownership unchanged, so no immediate threat to governance stability. However, the short-term high-interest loan suggests possible financial pressure; investors should monitor for further increases in pledges.

KOSDAQ Filing Information


  • Filing: Report on Large Shareholding (General)
  • Company: SyntekaBio (226330)
  • Submission: Jongseon Jeong
  • Receipt: 05-29-2026