Helix Commences Secondary Public Offering of Cal Dive Stock

Helix Energy Solutions has commenced an underwritten secondary public offering of 20,604,317 shares of common stock of its subsidiary, Cal Dive International, Inc. The secondary offering also includes an option for the underwriters to purchase an additional 3,090,647 shares to cover over-allotments, if any.

In connection with the offering, Credit Suisse Securities (USA) LLC and BofA Merrill Lynch are acting as joint book-running managers and Capital One Southcoast, Inc. and Natixis Bleichroeder Inc. are acting as co-managers for the offering.

Cal Dive has filed a registration statement, including a prospectus, with the Securities and Exchange Commission for the offering to which this communication relates. Before investing, investors should read the prospectus in that registration statement, the accompanying prospectus supplement, and other documents Cal Dive has filed with the SEC for more complete information about Cal Dive and this offering.