The Board of Directors of PJSC Rosseti made the relevant decision on Friday, February 12, 2021. Andrey Ryumin has been an acting CEO and Chairman of the Management Board since January 15. 
Earlier, since January 2018, Andrey Ryumin has been the Head of Rosseti Lenenergo. Prior to that, he had worked as an independent member of the Board of Directors of Mosenergo, Director General of the United Energy Company (the second largest electric grid entity in Moscow Region), and in some other energy and investment companies.
For more details, please follow the link below (https://www.rosseti.ru/eng/press/news/?ELEMENT_ID=38259).