13 Founders Backed by Alexander Rosen (2026)

13 founders backed by Alexander Rosen, with company, stage, and round detail. Includes Besty AI and eSelf AI.

Alexander Rosen founders (13)

Alexander Rosen founders covers 13 founders on Archera, Arya Health and Besty AI and 10 other companies. The most common sectors are Cybersecurity (4), SaaS (3) and AI Infrastructure (2). Members are based in 10 cities, led by San Francisco, CA (3), New York, NY (2) and Alameda, CA (1). The remaining members span Developer Tools (1), Fintech (1), Healthtech (1) and Real Estate (1). Companies represented include Cerby, Clazar, eSelf AI, Fiveonefour, Go Autonomous, Loop, Ontic, Prompt Security, Recall.ai and Theom. Every founder below links to a profile with their company, backers, and the filings behind each round.

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•By Alejandro Cremades