The Allergan Board Under Fire (A)
In 2014, the board of directors of Allergan Inc. received a surprise takeover offer from Valeant Pharmaceuticals in association with hedge fund activist Bill Ackmans Pershing Square Capital Management. In the unprecedented deal between a buyer and a hedge fund activist, Pershing Square had tacitly accumulated a 9.7% stake in Allergan prior to the Valeant …