E gor Kulkov is a Russian billionaire who made his fortune as a key partner in the pharmaceutical company Pharmstandard. The company became one of Russia's largest drugmakers, largely by acquiring and consolidating former state-owned pharmaceutical plants during the post-Soviet era. Pharmstandard is a leading producer of a wide range of generic and over-the-counter medications for the Russian market.

Kulkov, along with his longtime business partner Viktor Kharitonin, built the company into a domestic powerhouse. A significant portion of his wealth was crystalized when the company went public on the London Stock Exchange. He has since sold down a significant portion of his stake in the company and has diversified his investments into other areas, including biotechnology startups and other ventures, managing his wealth through his investment vehicle, Otis Tarda.