Structures affiliated with Steppe Agroholding, a member of Sistema JSFC, have bought the rights of claim to Zerno Don Group for ₽4.3 billion from Trust Bank, Kommersant sources told Kommersant. The group controls about 64 thousand hectares of arable land in the Rostov region. Steppe leases the land from Zerno Don. The purchase of the claims will ensure the agroholding's assets security and prevent their sale to a third-party investor.