0001193125-05-167212 Sample Contracts

2,500,000 Shares ALEXION PHARMACEUTICALS, INC. COMMON STOCK, PAR VALUE $0.0001 PER SHARE UNDERWRITING AGREEMENT

Underwriting Agreement • August 15th, 2005 • Alexion Pharmaceuticals Inc • Pharmaceutical preparations • New York

• Contract Type
  Underwriting Agreement
• Filed
  August 15th, 2005
• Company
  Alexion Pharmaceuticals Inc
• Industry
  Pharmaceutical preparations
• Jurisdiction
  New York

Alexion Pharmaceuticals, Inc., a Delaware corporation (the “Company”), proposes to issue and sell to Morgan Stanley & Co. Incorporated (“Morgan Stanley” or the “Underwriter”) 2,500,000 shares of its Common Stock, par value $0.0001 per share (the “Shares”). The shares of Common Stock, par value $0.0001 per share, of the Company to be outstanding after giving effect to the sales contemplated hereby are hereinafter referred to as the “Common Stock.”