LAREDO PETROLEUM HOLDINGS, INC. 16,000,000 Shares of Common Stock Underwriting AgreementLaredo Petroleum Holdings, Inc. • August 13th, 2013 • Crude petroleum & natural gas • New York
Laredo Petroleum Holdings, Inc., a Delaware corporation (the “Company”), proposes to issue and sell, and certain stockholders of the Company named in Schedule 2 (the “Warburg Pincus Selling Stockholders”) and Schedule 3 hereto (the “Management Selling Stockholders” and, together with the Warburg Pincus Selling Stockholders, the “Selling Stockholders”) propose to severally sell, to the several Underwriters listed in Schedule 1 hereto (the “Underwriters”), for whom you are acting as representatives (collectively, the “Representatives”), an aggregate of 16,000,000 shares (the “Underwritten Shares”) of common stock, par value $0.01 per share, of the Company (the “Common Stock”), of which 13,000,000 shares are to be issued and sold by the Company (the “Primary Shares”) and 3,000,000 shares are to be sold by the Selling Stockholders (the “Secondary Shares”), with each Selling Stockholder selling the number of Secondary Shares set forth opposite such Selling Stockholder’s named on Schedule 2
