Virpax Pharmaceuticals' CEO Anthony P. Mack has resigned, effective immediately, due to ongoing litigation. The board has appointed Gerald Bruce as the Berwyn company's CEO. Mack resigned as president of Scilex in March 2018.

He founded Virpax in early 2017. Bruce has served as executive vice president of commercial operations at Virpax since August 2017 and as a member of the company's board since July 2021. He is also president and CEO of Novvae Pharmaceuticals, the company's wholly owned subsidiary focused on over-the-counter products formed during the summer.

Bruce began his career at Johnson & Johnson and also worked at Bristol Myers Squibb, Nitromed and Danone Specialized Nutrition North America.