{"id":"eb1bd88c-edd7-4c3a-889f-3b40af0cce63","slug":"stephen-marcus","name":"Stephen Marcus","bioBrief":"Board director of Shield AI (since 2019); co-founder and General Partner of Riot Ventures.","nationality":null,"verificationPosture":"verified","aliases":[],"sources":[{"url":"https://www.riot.vc/partners/stephen-marcus","title":"Stephen Marcus - Riot Ventures","sourceName":"Riot Ventures"}],"reviewStatus":"reviewed","createdAt":"2026-06-04T23:53:46.115Z","updatedAt":"2026-06-04T23:53:46.115Z","educations":[],"companyRoles":[],"boardRoles":[{"id":"0c7ab299-eae8-41c1-93fc-935bb0bf22c8","personId":"eb1bd88c-edd7-4c3a-889f-3b40af0cce63","companyId":"d931700f-6b76-42d2-bdac-2123c2f26f1b","role":"director","startDate":null,"endDate":null,"current":true,"createdAt":"2026-06-04T23:54:02.656Z","company":{"slug":"shield-ai","name":"Shield AI"}}],"investorRoles":[],"foundings":[]}