XNCR

Xencor, Inc

A biopharmaceutical company that engineers antibodies and other proteins to treat cancer and autoimmune diseases. Its XmAb platform makes precise "plug-and-play" tweaks to the stem of an antibody, and those engineered designs show up in approved drugs like Ultomiris and sotrovimab, as well as in therapies developed with partners such as Novartis and Amgen. Founded in 1997 by scientist Bassil Dahiyat in California, the company also runs its own pipeline of drug candidates.