#TROP2

Kelun-Biotech: A Commercializing China ADC Franchise Priced for Much of Its sac-TMT and MSD Global Success

Kelun-Biotech is a commercial-stage China ADC developer whose equity value is dominated by its sac-TMT (TROP2) franchise in Greater China plus ex-China royalty economics from MSD. In 2025 product sales inflected to RMB542.7m within RMB2.06bn total revenue and the balance sheet held RMB4.56bn cash with no borrowings, yet the company still posted a RMB382.0m net loss as nearly all equity value concentrates in one molecule. Rating Hold: a real ADC franchise is forming, but at HK$419 the stock already prices in much of the sac-TMT China plus MSD global success path and offers no margin of safety.