Pfizer and Allergan agreed to merge in a $160 billion deal that would have created the world's largest pharmaceutical company. The deal was terminated in April 2016 after the US Treasury Department issued new rules targeting tax inversions.
Key facts
AnnouncedNov 23, 2015
Deal value$160.0B
Deal typeAcquisition/Merger
Therapeutic areaGastroenterology, Neurology, Ophthalmology, Women's Health