T&R Biofab Largest Shareholder Wonsoo Yoon Slightly Reduces Stake by 0.44% Due to Executive Resignation and Pledge Termination


  • Wonsoo Yoon the largest shareholder of T&R Biofab reported a decrease in beneficial ownership to 7,172,622 shares as of June 18 2026 down 208,096 shares from the previous report.
  • The decrease is due to the resignation of executive Jung Seung-gyo who was a special relation party and the termination of some stock pledge contracts; no new shares were issued or capital changed.
  • Approximately 1.69 million shares or 3.56% of total outstanding remain pledged with LS Securities and the largest shareholder controls 15.03% including direct holdings of 10.73% maintaining influence over management.
  • [AI Summary]The slight stake reduction is a routine adjustment from executive departure and pledge closure posing negligible dilution risk. With existing pledges and retained control shareholder value impact is neutral.

KOSDAQ Filing Information


  • Report on Large Shareholding (General)
  • Company: T&R Biofab (246710)
  • Submission: Wonsoo Yoon

  • Shares: 47,664,504
  • Price: 2,245 KRW
  • Market Cap: 107 B KRW