Trevor Norwitz is a partner in the Corporate Department at Wachtell, Lipton, Rosen & Katz, where he focuses on mergers and acquisitions, corporate governance and securities law matters. The following post is based on a Wachtell Lipton firm memorandum by Martin Lipton, Adam O. Emmerich, Mr. Norwitz, and Sabastian V. Niles.
The Pershing Square-Valeant hostile bid for Allergan has captured the imagination. Other companies are wondering whether they too will wake up one morning to find a raider-activist tag-team wielding a stealth block of their stock. Serial acquirers are asking whether they should be looking to take advantage of this new maneuver. Speculation and rumor abound of other raider-activist pairings and other targets.
Questions of legality are also being raised. Pershing Square and Valeant are loudly proclaiming that they have very cleverly (and profitably) navigated their way through a series of loopholes to create a new template for hostile acquisitions, one in which the strategic bidder cannot lose and the activist greatly increases its odds of catalyzing a quick profit-yielding event, investing and striking deals on both sides of a transaction in advance of a public announcement.

