CARLSBAD, Calif., Aug. 01, 2024 (GLOBE NEWSWIRE) -- Exagen Inc. (Nasdaq: XGN), a leading provider of autoimmune testing solutions announced today the appointment of Jeffrey G. Black, to the role of Chief Financial Officer (CFO), effective September 1, 2024. Mr. Black replaces Kamal Adawi, who will be stepping down, and John Aballi will act as interim CFO through the end of August.