AGREEMENT AND PLAN OF MERGER Among Abgenix, Inc., Amgen Inc. and Athletics Merger Sub, Inc. Dated as of December 14, 2005Agreement and Plan of Merger • December 15th, 2005 • Amgen Inc • Biological products, (no disgnostic substances) • Delaware
AGREEMENT AND PLAN OF MERGER (hereinafter called this “Agreement”), dated as of December 14, 2005, among Abgenix, Inc., a Delaware corporation (the “Company”), Amgen Inc., a Delaware corporation (“Parent”), and Athletics Merger Sub, Inc., a Delaware corporation and a wholly-owned subsidiary of Parent (“Merger Sub,” the Company and Merger Sub sometimes being hereinafter collectively referred to as the “Constituent Corporations”).
