Cobalt International Energy, Inc. (“Cobalt”) (NYSE: CIE) today announced that it will release its second quarter 2013 results before the New York Stock Exchange opens on Tuesday, July 30, 2013. This release will be followed by a conference call for investors at 10:00 a.m. Central Time (11:00 a.m. Eastern Time) to discuss Cobalt’s second quarter 2013 results. Hosting the call will be Joseph H. Bryant, Chairman and Chief Executive Officer and John P. Wilkirson, Chief Financial Officer. The call can be accessed live over the telephone by dialing (877) 705-6003, or for international callers, (201) 493-6725. A replay will be available shortly after the call and can be accessed by dialing (877) 870-5176, or for international callers, (858) 384-5517. The passcode for the replay is 417792. The replay will be available until August 13, 2013. Interested parties may also listen to a simultaneous webcast of the conference call by logging onto Cobalt’s website at www.cobaltintl.com in the Newsroom—Events & Speeches section. A replay of the conference call will also be available for approximately 30 days following the call. About Cobalt Cobalt is an independent oil exploration and production company active in the deepwater U.S. Gulf of Mexico and offshore Angola and Gabon. Cobalt was formed in 2005 and is headquartered in Houston, Texas. Forward-Looking Statements This press release includes “forward-looking statements” within the meaning of the safe harbor provisions of the Section 27A of the Securities Act of 1933 and Section 21E of the Securities Exchange Act of 1934 — that is, statements related to future, not past, events. Forward-looking statements are based on current expectations and include any statement that does not directly relate to a current or historical fact. In this context, forward-looking statements often address Cobalt’s expected future business and financial performance, and often contain words such as “anticipate,” “believe,” “intend,” “expect,” “plan,” “will” or other similar words. These forward-looking statements involve certain risks and uncertainties that ultimately may not prove to be accurate. Actual results and future events could differ materially from those anticipated in such statements. For further discussion of risks and uncertainties, individuals should refer to Cobalt’s SEC filings. Cobalt undertakes no obligation and does not intend to update these forward-looking statements to reflect events or circumstances occurring after this press release, other than as required by law. You are cautioned not to place undue reliance on these forward-looking statements, which speak only as of the date of this press release. All forward-looking statements are qualified in their entirety by this cautionary statement.