ALLIS-CHALMERS ENERGY INC. Common Stock UNDERWRITING AGREEMENT dated January 23, 2007Underwriting Agreement • January 25th, 2007 • Allis Chalmers Energy Inc. • Oil & gas field services, nec • New York
Introductory. Allis-Chalmers Energy Inc., a Delaware corporation (the “Company”), proposes to issue and sell to the several underwriters named in Schedule A hereto (the “Underwriters”) an aggregate of 6,000,000 shares (the “Firm Shares”) of its Common Stock, par value $0.01 per share (the “Common Stock”). In addition, the Company has granted to the Underwriters an option to purchase up to an additional 900,000 shares (the “Optional Shares”) of Common Stock, as provided in Section 2. The Firm Shares and, if and to the extent such option is exercised, the Optional Shares, are collectively called the “Shares”. RBC Capital Markets Corporation has agreed to act as representative of the several Underwriters (in such capacity, the “Representative”) in connection with the offering and sale of the Shares.
