"Born on July 11, 1969, Gorkiy. In 1992, graduated from the full-time department of the Faculty of Journalism of M. V. Lomonosov Moscow State University. He served in military unit no 08874 of Kovrov. Constant author of the KOMSOMOLSKYA PRAVDA newspaper. 2019 – 2022, the host of the MORNING MARDAN show on the KOMSOMOLSKAYA PRAVDA radio station. Since the beginning of 2020, together with M. A. Fridrikhson, he has been hosting the “Evening Sofa” show. He also hosts the “Saturday Mardan” show on the Solovyov LIVE TV Channel.

The SBU has collected an evidence database against Russian propagandist Sergey Kliuchenkov (known under the assumed name SERGEY MARDAN) calling for the genocide of the Ukrainian people."