TRANSLATION

Autonomous City of Buenos Aires, February 12, 2014
To the

Bolsa de Comercio de Buenos Aires

(Buenos Aires Stock Exchange)

Re: Information pursuant to Article 23, Ch. VII of the Buenos Aires Stock Exchange Rules. - Acquisition of Apache Stock in Argentina

Dear Sirs:

The purpose of this letter is to comply with the requirements of Article 23, Title
VII of the Buenos Aires Stock Exchange Rules.
In this regard, please be informed that, on the date of this letter, YPF S.A. ("YPF") and its subsidiary YPF Europe B.V. ("YPF Europe") accepted an offer made by Apache Overseas lnc. and Apache International Finance II S.a.r.I. (together with their affiliates, "Apache") for the acquisition of 100% of Apache's stake in foreign companies that control Argentine companies which are the owners of assets located in the Argentine Republic, and the acquisition of certain intercompany loans by Apache to the aforementioned Argentine companies.
Pursuant to this transaction, YPF, together with YPF Europe, will acquire control of all of the assets of the Apache Group in Argentina. The price for the transaction, as agreed upon by the parties, is $800,000,000 plus working capital and minus adjustments that may be produced at the time of closing due to activities outside the ordinary course of business. Payment of that amount will be effectuated with an initial deposit of $50,000,000 and settlement of the remaining balance within the next 30 days. The primary assets included in this transaction, located in the provinces of Neuquén, Tierra del Fuego and Río Negro, produce a total of 46,800 barrels equivalent of oil per day, and have an important infrastructure of pipelines and facilities, employing around 350 employees. In addition, certain assets have potential for exploration and development in the Vaca Muerta Formation.
In turn, YPF has entered into a transfer of assets agreement with Pluspetrol S.A. ("Pluspetrol") whereby it will transfer, in exchange for $217,000,000, a stake that belongs to Apache Energía Argentina S.R.L. (a subsidiary of Apache Canada Argentina Holdings S.a.r.I.), in three concessions and four UTE contracts, as well as a stake of YPF in a UTE contract. The aforementioned stakes are related to assets located in the Province of Neuquén, with the objective of jointly exploring and developing the Vaca Muerta Formation.
As of result of the previously described transaction, YPF will acquire the following corporate shares: (i) 100% of the capital stock of Apache Canada Argentina Investment S.a.r.I. and 100% of the capital stock of Apache Canada Argentina Holdings S.a.r.I.; (ii) 100% of the capital stock of Apache Argentina Corporation, through which it will control 65.28% of Apache Petrolera Argentina S.A., and (iii)
34.72% of Apache Petrolera Argentina S.A.

Yours faithfully,

TRANSLATION

Miguel Galuccio President YPF S.A.

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