Rosneft has signed an agreement to purchase from the AAR Consortium (Alfa Group, Access Industries, and Renova) its 50% stake in TNK-BP, the company announced.

The purchase price in the transaction is determined based on the base value of AAR’s stake in TNK-BP of US $28 billion. Completion of the transaction is subject to approvals from Russian and European antimonopoly bodies and is expected to occur in the first half of 2013.

Commenting on the signing of the agreement, Rosneft President Igor Sechin said, “We consider the acquisition of TNK-BP to be strategically attractive for Rosneft shareholders. As a result of this agreement, Rosneft will be able to fully consolidate the acquired business and benefit from a considerable synergy effect. Agreements reached today enable us to start preparing the integration process immediately.”