"This resolution provides the clarification we were seeking to allow Allergan shareholders to proceed with the process of calling a special meeting without fear of tripping the pill." Allergan Inc. (NYSE:AGN) is a multi-specialty health care company having a portfolio of pharmaceuticals, biologics, medical devices and over-the-counter consumer products, and state-of-the-art resources in R&D, manufacturing and safety surveillance. The company has a market cap of $50.3 billion. Aside from Pershing Square, Samuel Isaly's Orbimed Advisors holds 2.27 million shares of the company, and Jonathon Jacobson's Highfields Capital Management owns 1.52 million shares. On Monday, Allergan Inc. (NYSE:AGN) said that its board of directors unanimously rejected an unsolicited exchange offer by Valeant Pharmaceuticals Intl Inc (NYSE: VRX ) to acquire all outstanding common shares of Allergan Inc. (NYSE:AGN).