Exhibit 1 3,600,000 Shares of Common Stock ALEXION PHARMACEUTICALS, INC. UNDERWRITING AGREEMENTAlexion Pharmaceuticals Inc • September 12th, 2003 • Pharmaceutical preparations • New York
Company FiledSeptember 12th, 2003 Industry Jurisdiction
Exhibit 1 3,600,000 Shares of Common Stock ALEXION PHARMACEUTICALS, INC. UNDERWRITING AGREEMENTAlexion Pharmaceuticals Inc • September 12th, 2003 • Pharmaceutical preparations • New York
Company FiledSeptember 12th, 2003 Industry Jurisdiction