Sanofi To Purchase Immune System-Focused Drugmaker Principia Biopharma For $3.7B By: TalkMarkets August 17, 2020 at 09:32 AM EDT Sanofi SA will acquire Principia Biopharma Inc for $3.68 billion in cash, the two companies announced Monday. Read More >> Related Stocks: Gsk Plc ADR Principia Biopharma Inc Sanofi-Aventis S.A. ADR Telesis Bio, Inc. - Common Stock