However, on February 20, 2003, Oleg Mitvol, citing a decision of a meeting of the board, kept secret from the journalists despite their 24% share, accused Director General of Novye Izvestiya Igor Golembiovsky of misappropriation of funds and fired him.

One of the famous campaigns by Mitvol was "Dacha war", against elite cottage settlements that were illegally built in the gallery forest area on Istra River shores.

In September 2006, he threatened to revoke environmental authorisation for Royal Dutch Shell's Sakhalin II oil and gas production project.

[5] The next day, Mitvol brought in London lawyer Mark Stephens to take proceedings to preserve the Russian Far East.

[10] In 2018, Mitvol acquired shares of the Krasnoyarsk Engineering and Construction Survey Trust and headed the board of directors.