Cyrus Massoumi is the Founder and Managing Partner of Humbition. See sector focus and contact routes.
Cyrus Massoumi is the Founder and Managing Partner of Humbition, an early-stage venture firm in New York that he co-founded with Slava Rubin to invest in purpose-driven startups. His investment thesis focuses on early-stage companies in marketplaces, consumer, and health tech sectors, with a primary geographic focus on New York City startups and a core requirement of high-quality founders. As an angel investor, Massoumi has made six documented investments, including a recent pre-seed check in the software company Perle in October 2024. Notable portfolio companies include Perle, while his own entrepreneurial background features founding and leading ZocDoc as CEO for eight years and currently founding the telehealth service Dr. B. Massoumi primarily manages investments in the healthtech space through Humbition, leveraging his prior experience at McKinsey & Company in healthcare technology. He distinguishes his approach by emphasizing “humble ambition” and supporting purpose-driven founders rather than adhering to a rigid sector checklist beyond his core healthtech focus.
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