Catalyst is a biopharmaceutical company focused on developing its recently acquired small molecule F351 (hydronidone) for the treatment of fibrotic diseases including hepatitis B associated fibrosis and non-alcoholic steatohepatitis. The Company previously focused on protease engineering-based drug discovery and development to address unmet medical needs in disorders of the complement or coagulation systems and has been monetizing these assets to distribute cash to its stockholders.