PRNB - Principia prices stock offering; shares down 6% after hours October, 16 2019 12:13 AM Principia Biopharma Inc. Principia Biopharma (NASDAQ:PRNB) prices its public offering of 7.5M common shares at $28/share, for gross proceeds of $210M.More news on: Principia Biopharma Inc., Healthcare stocks news, Read more ...