{"id":"6476d6c0-c3c9-4cb0-ab4d-65cc82db0e4e","slug":"mikhail-kokorich","name":"Mikhail Kokorich","bioBrief":"Physicist and self-taught engineer who founded Momentus in 2017 to develop water plasma propulsion for in-space transportation. A two-time Y Combinator founder, he was later replaced as CEO amid SEC investigation and national security concerns over his Russian origins.","priorExits":null,"nationality":null,"verificationPosture":"reported","aliases":[],"sources":[{"url":"https://startupintros.com/orgs/momentus","title":"Momentus: Funding, Team & Investors","sourceName":"Startup Intros"}],"reviewStatus":"unreviewed","createdAt":"2026-08-08T21:03:00.911Z","updatedAt":"2026-08-08T21:03:00.911Z","educations":[],"companyRoles":[{"id":"7d77d4c0-a55c-4553-b9f5-8f8bc3f342bb","personId":"6476d6c0-c3c9-4cb0-ab4d-65cc82db0e4e","companyId":"d29879a2-dd3a-4ded-8eea-f6c2854fe812","role":"founder","roleTitle":"Founder & Former CEO","startDate":null,"endDate":null,"currentRole":false,"roleBasis":"verified_secondary","createdAt":"2026-08-08T21:03:01.683Z","company":{"slug":"momentus-space","name":"Momentus Space"}}],"boardRoles":[],"investorRoles":[],"foundings":[]}