Company. Walden Biosciences’ mission is to transform the treatment of kidney disease by reversing its. progression and enabling patients to resume their normal lives. Walden is a private, Series B. venture-backed biopharmaceutical company developing first-in-class, highly targeted. disease-modifying therapies for individuals living with kidney disease. Walden’s most advanced programs address two novel targets: soluble urokinase plasminogen activa...