3 Founders Backed by Jason Stein (2026)

Jason Stein founders (3)

Jason Stein founders covers 3 founders on Kisi Security, Sightly and SocialChorus. The most common sectors are Cybersecurity (1), Media (1) and SaaS (1). Members are based in 3 cities, led by Brooklyn, NY (1), New York, NY (1) and San Francisco, CA (1). Every founder below links to a profile with their company, backers, and the filings behind each round.

• Founders listed: 3
• Companies represented: 3
• Top sector: Cybersecurity (1 founders)
• Top location: Brooklyn, NY (1 founders)
• Sectors represented: 3
• Locations represented: 3

• Bernhard Mehl — Kisi Security
• Jonathan Cohen — SocialChorus
• Ralph Mack — Sightly

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