FibroGen Terminates License Agreement With HiFiBiO, Transfers Anti-CCR8 And Anti-Gal-9 Assets, And Secures Potential Royalties From Future Sublicensing Or Commercialization

On June 12, 2025, FibroGen ("FibroGen" or the "Company") entered into a Termination, Asset Transfer and License Agreement (the "Agreement") with HiFiBiO Inc. ("HiFiBiO"). The Agreement terminates the Exclusive License and Option Agreement between the parties, dated June 16, 2021, as amended on February 14, 2024 (the "License Agreement"), and all rights and obligations of FibroGen under the License Agreement shall cease and terminate, subject to certain survival terms.

Under the Agreement, FibroGen has also licensed HiFiBiO the anti-CCR8 and anti-Gal-9 intellectual property developed by FibroGen. In the event HiFiBiO sublicenses Gal-9 (FG-3165) and/or CCR8 (FG-3175) assets, FibroGen is eligible to receive a mid single-digit to low double-digit share of HiFiBiO's license revenues and low double-digit share of HiFiBiO's commercial royalties. In the case HiFiBiO commercializes either asset, FibroGen has the potential to receive single digit royalties based upon worldwide net sales.