Here is
a timeline of major mergers and acquisitions after The
Upjohn Company ceased to exist.
Pharmacia & Upjohn
(P&U) - this was a merger of equals
-
Announced August 1995
-
Finalized October 1995
Pharmacia - P&U merged with
Monsanto and formed a new corporation
-
Announced December 1999
-
Finalized April 2000
Pfizer - Pfizer bought Pharmacia
-
Announced July 2002
-
Finalized April 2003
Other
-
Upjohn Division
announced by Pfizer July 2018
-
Upjohn Division finalized January 2019
-
Upjohn Division merger with Mylan announced July 2019
-
Upjohn Division merger with Mylan finalized November 2020
-
Upjohn-Mylan named Viatris November 2020