Law Offices of Howard G. Smith announces that it is investigating potential claims against YPF Sociedad Anonima ("YPF" or the "Company") (NYSE:YPF) concerning possible violations of federal securities laws. The investigation focuses on allegations that certain statements issued by YPF in connection with the Company's March 23, 2011 offering were materially false and misleading. YPF engages in the exploration, development and production of crude oil, natural gas and liquefied petroleum gas (LPG) in Argentina.

The investigation is related to allegations that the Registration Statement filed with the Securities and Exchange Commission in connection with the March 23, 2011 offering misrepresented or failed to disclose that: (1) the Company faced a risk of nationalization by the Argentinean government; (2) as a result of the Company's failure to adequately produce oil and gas within Argentina and reinvest a substantial portion of its profits back into the Company and its operations, the risk of nationalization had increased; (3) the Company was in breach of its concession contracts with various Argentinean provinces; and (4) nationalization by the Argentinean government would likely have a severe adverse effect on shareholders and on the Company's market value.

If you purchased YPF American Depositary Shares pursuant or traceable to the Company's March 23, 2011 offering, if you have information or would like to learn more about these claims, or if you wish to discuss these matters or have any questions concerning this announcement or your rights or interests with respect to these matters, please contact Howard G. Smith, Esquire, of Law Offices of Howard G. Smith, 3070 Bristol Pike, Suite 112, Bensalem, Pennsylvania 19020 by telephone at (215) 638-4847, Toll Free at (888) 638-4847, or by email to howardsmith@howardsmithlaw.com, or visit our website at http://www.howardsmithlaw.com.

Law Offices of Howard G. Smith
Howard G. Smith, Esquire
(215) 638-4847
(888) 638-4847
howardsmith@howardsmithlaw.com
www.howardsmithlaw.com