Aprogen Biologics Issues 50.8B KRW Convertible Bond to Affiliate AptoChrom; Conversion Would Surge Shares by 93%, Diluting Shareholder Value


  • Aprogen Biologics decided to issue the 20th unregistered, interest-bearing, unsecured private convertible bond worth 50.8 billion KRW
  • The issuance is targeted at its affiliate AptoChrom, in which Aprogen holds a 52.28% stake as the largest shareholder
  • Conversion price set at 3,778 KRW, approximately 27% premium to current market price of 2,975 KRW, but can be adjusted down to a minimum of 2,645 KRW if the stock price falls
  • Upon conversion, 13,446,267 new shares will be issued, representing 93.3% of the current outstanding shares (14,412,374), causing massive shareholder dilution
  • All proceeds of 50.8 billion KRW will be used to repay debt owed to affiliate AptoChrom, with payment via offset of existing receivables (no cash inflow)
  • Combined with outstanding convertible bonds totaling 128 billion KRW (24,427,092 convertible shares), the potential dilution ratio reaches 262.78% of current shares
  • Bondholders have a put option exercisable every 3 months starting December 23, 2027, with early redemption rates from 103.076% to 105.783%
  • Maturity date is June 23, 2029, with a redemption amount of 106.3412% of face value
  • [AI Summary]This convertible bond issuance by Aprogen Biologics to repay debt to its affiliate AptoChrom represents a debt-to-equity swap without cash inflow, aiming to improve financial structure. However, the conversion would dilute existing shareholders by 93.3%, and together with outstanding CBs, the potential dilution reaches 262.78%, which is extremely negative for the stock price. Although the conversion price is at a premium, the downward adjustment clause increases future conversion risk, posing significant investment risk.

KOSPI Filing Information


  • Filing: [Correction of Description] Report on Major Matters (Decision on Issuance of Convertible Bonds)
  • Company: Aprogen Biologics (003060)
  • Submission: Aprogen Biologics Inc.
  • Receipt: 06-02-2026