Alex Rosen

Managing Partner

Immigrant. Teenage computer nerd. Father of twins. Agitator for excellence. Loves connecting founders to enterprise customers.

Alexander Rosen is Managing Partner and co-founder of Ridge Ventures. He focuses on investing in companies developing software that radically changes end-user experiences. Alex currently serves as board director or observer at Bestomer (stealth), Eskalera (future workplace platform), Habu (privacy-safe data sharing), Kazoo (employee engagement platform), Minted (design-driven e-commerce), Ontic (protective intelligence platform), Retail Zipline (communication platform), SafeGraph (geolocation data), and UpLift (payment management for travel).  He also led Ridge Ventures’ investments in multiple companies including InCountry,, and MaintainX.

Alex is a recognized industry leader and serves as Chair of the Stanford GSB Venture Fund Group and on the GSB Trust Board.

Prior to co-founding Ridge, he was a Partner at Sprout Group, where he was head of the Internet and Software group.

His prior investments include Blue Box (acquired by IBM), Braze (IPO), Fastly (IPO), Flowdock (acquired by Rally), MyNewPlace (acquired by RealPage), mySimon (acquired by CNET), Krux (acquired by, MindMeld (acquired by Cisco), SideStep (acquired by Kayak), Vidible (acquired by Verizon/Oath), and WatchGuard (acquired by Vector).  Alex started his venture capital career as an associate with General Atlantic Partners, served as an advisor to Vector Capital, and developed software for Telcordia and AT&T Bell Labs early in his professional life.

He holds BS degrees in Electrical Engineering and Economics from MIT and an MBA from Stanford University.

He lives in San Francisco with his wife and twin daughters.