AprilBio's Largest Shareholder Sanghoon Cha Sells 7.56% Stake at Discount, Diluting Control - New Investors Include IMM Asset Management and TKG Huchems


  • AprilBio's largest shareholder Sanghoon Cha signed a block sale agreement on June 24, 2026, selling 1.77 million shares at 32,890 won per share to IMM Asset Management and IMM Scale-Up Bio No. 1.
  • This represents an approximately 18.9% discount to the current market price of 40,550 won, with a total transaction value of about 58.2 billion won.
  • After the closing, Cha's stake will decrease from 20.17% to 19.39%, while IMM entities will own 7.56%, leading to a dilution of control.
  • New special relations include IMM entities, Petra 9 PEF, IMM Investment, and TKG Huchems, forming a complex shareholder structure.
  • Co-investment agreements grant TKG Huchems a call option and IMM entities put options and tag-along rights, increasing stock price volatility risk.
  • Cha has entered into a shareholder agreement granting TKG Huchems a right of first refusal on his remaining 2.655 million shares 11.34%.
  • [AI Summary]The major shareholder's large discounted sale and option contracts signal control dispersion and potential downside pressure. Short-term negative impact on stock price is expected; investors should monitor option exercise possibilities and new shareholders' intentions.

KOSDAQ Filing Information


  • Report on Large Shareholding (General)
  • Company: AprilBio (397030)
  • Submission: Sanghoon Cha

  • Shares: 23,413,826
  • Price: 40,550 KRW
  • Market Cap: 949.4 B KRW