Common Contracts

50,000,000 Shares COBALT INTERNATIONAL ENERGY, INC. Common Stock UNDERWRITING AGREEMENT

Underwriting Agreement • May 10th, 2013 • Cobalt International Energy, Inc. • Crude petroleum & natural gas • New York

• Contract Type
  Underwriting Agreement
• Filed
  May 10th, 2013
• Company
  Cobalt International Energy, Inc.
• Industry
  Crude petroleum & natural gas
• Jurisdiction
  New York

We have also participated in the preparation of the Company’s registration statement on Form S-3 (File No. 333- 171536) (including the documents incorporated by reference therein (the “Incorporated Documents”)) filed with the Securities and Exchange Commission (the “Commission”) pursuant to the provisions of the Securities Act of 1933, as amended (the “Act”), relating to the registration of securities (the “Shelf Securities”) to be issued from time to time by the Company, the preliminary prospectus supplement dated May 7, 2013 relating to the Shares (the “Preliminary Prospectus Supplement”) and the prospectus supplement dated May 7, 2013 relating to the Shares (the “Prospectus Supplement”). To our knowledge, no stop order suspending the effectiveness of the registration statement has been issued. The registration statement became effective under the Act upon the filing of the registration statement with the Commission on January 4, 2011 pursuant to Rule 462(e). The registration stateme

40,000,000 Shares COBALT INTERNATIONAL ENERGY, INC. Common Stock UNDERWRITING AGREEMENT

Underwriting Agreement • January 18th, 2013 • Cobalt International Energy, Inc. • Crude petroleum & natural gas • New York

• Contract Type
  Underwriting Agreement
• Filed
  January 18th, 2013
• Company
  Cobalt International Energy, Inc.
• Industry
  Crude petroleum & natural gas
• Jurisdiction
  New York

We have also participated in the preparation of the Company’s registration statement on Form S-3 (File No. 333- 171536) (including the documents incorporated by reference therein (the “Incorporated Documents”)) filed with the Securities and Exchange Commission (the “Commission”) pursuant to the provisions of the Securities Act of 1933, as amended (the “Act”), relating to the registration of securities (the “Shelf Securities”) to be issued from time to time by the Company, the preliminary prospectus supplement dated January 15, 2013 relating to the Shares (the “Preliminary Prospectus Supplement”) and the prospectus supplement dated January [ ], 2013 relating to the Shares (the “Prospectus Supplement”). To our knowledge, no stop order suspending the effectiveness of the registration statement has been issued. The registration statement became effective under the Act upon the filing of the registration statement with the Commission on January 4, 2011 pursuant to Rule 462(e). The registrat