Bull & Lifshitz, LLP announces an investigation into possible breaches of fiduciary duty in connection with the proposed sale of Petrohawk Energy Corporation (NYSE: HK) (referred to as "Petrohawk" or the “Company”) to BHP Billiton Ltd. (“BHP”) by means of an all-cash transaction valued at approximately $12.1 billion and a total enterprise value of approximately $15.1 billion, including the assumption of net debt.

Under the terms of the agreement, Petrohawk stockholders will receive $38.75 for each share of common stock they hold. The tender offer is expected to commence by July 25, 2011.

Bull & Lifshitz, LLP's investigation is focused on whether the proposed deal provides adequate value to the Company’s shareholders.

If you are a holder of Petrohawk common stock and want to discuss your legal rights, you may e-mail or call Bull & Lifshitz, LLP who will, without obligation or cost to you, attempt to answer your questions.

If you are a shareholder of Petrohawk and would like more information about our investigation, please contact Joshua M. Lifshitz, Esq. by telephone at (866) 313-6222 or by sending an e-mail including your contact information to: counsel@nyclasslaw.com. All e-mail correspondence should make reference to Petrohawk.

Bull & Lifshitz, LLP is a New York City-based law firm with significant experience representing investors in merger-related shareholder class actions, shareholder derivative actions, and securities fraud class actions. For more information about the firm, please visit our website at www.nyclasslaw.com.

ATTORNEY ADVERTISING . © 2011 Bull & Lifshitz, LLP. The law firm responsible for this advertisement is Bull & Lifshitz, LLP, 18 East 41 st Street, New York, New York 10017, (212) 213-6222. Prior results do not guarantee or predict a similar outcome with respect to any future matter .

Copyright Business Wire 2010

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