Ryan & Maniskas, LLP (www.rmclasslaw.com/cases/lpr) has commenced an investigation into potential securities law violations by certain officers of Lone Pine Resources, Inc. ("Lone Pine" or the "Company") (NYSE: LPR) and several underwriting investment banks for possible violations of the federal securities laws in connection with the Company's May 26, 2011 Initial Public Offering (the "IPO").

Lone Pine shareholders who purchased shares of Lone Pine between May 26, 2011 and August 2, 2011 should contact Richard A. Maniskas, Esquire at 877-316-3218 or at rmaniskas@rmclasslaw.com to learn more about this investigation.

On August 2, 2011, Lone Pine disclosed that its financial results for the second quarter of 2011 were "negatively affected by a sales pipeline disruption in the Evi area in late April [2011] that required volumes to be trucked to market" and that the "Evi area was impacted by a large forest fire in Mid-May [2011]." As a result of this news, the Company's stock plummeted over the next several days and closed at $9.21 per share on August 11, 2011, a decline of approximately 30%.

If you purchased Lone Pine shares and would like to learn more about these claims or if you wish to discuss these matters and have any questions concerning this announcement or your rights, contact Richard A. Maniskas, Esquire toll-free: (877) 316-3218 or visit: www.rmclasslaw.com/cases/lpr. You may also email Mr. Maniskas at rmaniskas@rmclasslaw.com. For more information about class action cases in general, please visit our website: www.rmclasslaw.com.

Ryan & Maniskas, LLP is a national shareholder litigation firm. Ryan & Maniskas, LLP is devoted to protecting the interests of individual and institutional investors in shareholder actions in state and federal courts nationwide.

Ryan & Maniskas, LLP
Richard A. Maniskas, Esquire
877-316-3218
rmaniskas@rmclasslaw.com
www.rmclasslaw.com/cases/lpr