6,150,000 Shares HALOZYME THERAPEUTICS, INC. Common Stock ($.001 par value) UNDERWRITING AGREEMENTUnderwriting Agreement • June 23rd, 2009 • Halozyme Therapeutics Inc • Biological products, (no disgnostic substances) • New York
Contract Type FiledJune 23rd, 2009 Company Industry JurisdictionIntroductory. Halozyme Therapeutics, Inc., a Delaware corporation (the “Company”), proposes to issue and sell to Jefferies & Company, Inc. as sole underwriter (“Jefferies” or the “Underwriter”) an aggregate of 6,150,000 shares (a “Share” and, collectively, the “Shares”) of common stock, $0.001 par value per share (the “Common Stock”) of the Company.