Anton Andreyevich Cherepennikov

MegaFon PJSC engages in the provision of telecommunications services. It offers voice, mobile and fixed-line data transfer, wireless data and wireless broadband services, roaming, short message service, and value-added service, developing business solutions, and sales of mobile phones and other electronics. The company was founded on June 17, 1993 and is headquartered in Moscow, Russia.

Citadel LLC engages in the development of information security software. It also provides investment, as well as management and business consulting services. The company was founded by Anton Andreyevich Cherepennikov on September 30, 2015 and is headquartered in Moscow, Russia.

Forpost OOO provides business consulting services. Its other activities include management and operation of businesses. The company was founded by Anton Andreyevich Cherepennikov and Aleksey Aleksandrovichon Krutitskiy on October 4, 2016 and is headquartered in Moscow, Russia.

IKS Kholding LLC is a multidisciplinary IT holding Russian company that invests in the development of the national engineering school. The company is based in Moscow, RU, and has subsidiaries in the United States and Russian Federation. The private company unites leading companies in key areas of IT and creates the infrastructure of the future. The company's subsidiaries include Yadro, the largest manufacturer of computer equipment in Citadel, SORM Garda, a leading developer of information security solutions, Kryptonite, a technological and research group of companies, and Bureau 1440, which focuses on the development and creation of low-orbit satellite communication systems. IKS Kholding was founded in 2018 by Anton Andreyevich Cherepennikov and Aleksey Igorevich Khrenov, with Anton Andreyevich Cherepennikov serving as the CEO since 2018. The company acquired IKS Kholding from USM Telecom LLC on February 28, 2022.