Rigrodsky & Long, P.A. Announces A Securities Fraud Class Action Lawsuit Has Been Filed Against Hyperdynamics Corporation

Rigrodsky & Long, P.A. announces that a complaint has been filed in the United States District Court for the Southern District of Texas, Houston Division on behalf of all persons or entities that purchased the securities of Hyperdynamics Corporation (“Hyperdynamics” or the “Company”) (NYSE: HDY) between February 17, 2011 and February 15, 2012, inclusive (the “Class Period”), alleging violations of the Securities Exchange Act of 1934 against the Company and its President and Chief Operating Officer (the “Complaint”).

If you purchased shares of Hyperdynamics during the Class Period, or purchased shares prior to the Class Period and still hold Hyperdynamics stock, and wish to discuss this action or have any questions concerning this notice or your rights or interests, please contact Timothy J. MacFall, Esquire or Scott J. Farrell, Esquire of Rigrodsky & Long, P.A., 825 East Gate Boulevard, Suite 300, Garden City, NY at (888) 969-4242, by e-mail to info@rigrodskylong.com, or at: http://www.rigrodskylong.com/investigations/hyperdynamics-corporation-hdy.

Hyperdynamics, a Delaware corporation headquartered in Houston, Texas, is an oil and gas exploration company operating offshore Guinea in West Africa. The Complaint alleges that throughout the Class Period, defendants made materially false and misleading statements regarding its business and financial results that artificially inflated the price of the Company’s common stock. Specifically, the Complaint alleges that defendants concealed that numerous cost overruns and logistical delays caused by limited port facilities in Guinea, as well as mechanical and operational issues in connection with the spudding of its Sabu-1 well, the Company could not begin drilling on the Baraka-1 well; despite its public statements, Hyperdynamics did not have adequate funds to drill both the Sabu-1 and the Baraka-1 wells; due to these problems, and defendants lacked a reasonable basis for their positive statements concerning the Company’s operations or the future value of its oil and gas concessions.

On November 9, 2011, the Company announced disappointing first quarter 2012 financial results and reported it had increased estimates for its two exploration wells from $80 million to $135 million. In addition, the Company announced that drilling results for its Sabu-1 well would likely be delayed until late December or early January and, therefore, its plans for drilling its Baraka-1 well may be delayed. On this partial disclosure, the price of the Company’s stock declined $1.33, or 25%, to a close of $4.06 per share on heavy trading volume. On December 14, 2011, the Company provided an operational update on the Sabu-1 well, stating that due to mechanical and operational issues it had only drilled to 1.440 meters compared to 1,400 the previous month. On this disclosure, the price of the Company’s stock declined $0.52 per share, or 19%, to close at $2.16 per share on December 14, 2011, on unusually heavy trading volume. On January 30, 2012, Hyperdynamics announced that due to higher than anticipated drilling costs at the Sabu-1 well, the Company entered into an agreement with an institutional investor to raise $30 million through an offering of the Company’s common stock. On this news, the price of the Company’s stock declined $0.77 per share, or 23%, to a close of $2.60 per share on January 30, 2012, on very heavy volume. Finally, on February 15, 2012, the Company announced disappointing results from the Sabu-1 exploration well, reporting only non-commercial quantities of oil present. On this news, the price of the Company’s common stock declined $0.58 per share, or 29%, to close at $1.44 per share on heavy trading volume.

If you wish to serve as lead plaintiff, you must move the Court no later than June 1, 2012. A lead plaintiff is a representative party acting on behalf of other class members in directing the litigation. In order to be appointed lead plaintiff, the Court must determine that the class member’s claim is typical of the claims of other class members, and that the class member will adequately represent the class. Your ability to share in any recovery is not, however, affected by the decision whether or not to serve as a lead plaintiff. Any member of the proposed class may move the court to serve as lead plaintiff through counsel of their choice, or may choose to do nothing and remain an absent class member.

While Rigrodsky & Long, P.A. did not file the Complaint in this matter, the firm, with offices in Wilmington, Delaware and Garden City, New York, regularly litigates securities class, derivative and direct actions, shareholder rights litigation and corporate governance litigation, including claims for breach of fiduciary duty and proxy violations in the Delaware Court of Chancery and in state and federal courts throughout the United States.

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