4,700,000 Shares1 NANOSPHERE, INC. Common Stock PURCHASE AGREEMENTPurchase Agreement • October 21st, 2009 • Nanosphere Inc • Surgical & medical instruments & apparatus • New York
Nanosphere, Inc., a Delaware corporation (the “Company”), proposes to sell you, as underwriter (the “Underwriter”), an aggregate of 4,700,000 shares (the “Firm Shares”) of Common Stock, $0.01 par value per share (the “Common Stock”), of the Company. The Company has also granted to the Underwriter an option to purchase up to 705,000 additional shares of Common Stock on the terms and for the purposes set forth in Section 3 hereof (the “Option Shares”). The Firm Shares and any Option Shares purchased pursuant to this Agreement are herein collectively called the “Securities.”
