Public Joint Stock Company Rosneft Oil Company (LSE:ROSN) sold a 49.52% stake in Nk Rosneft - Yamalnefteprodukt OAO on December 22, 2016. Public Joint Stock Company Rosneft Oil Company (LSE:ROSN) completed the sale of a 49.52% stake in Nk Rosneft - Yamalnefteprodukt OAO on December 22, 2016.