Alex Rosen
InvestorManaging Partner at Ridge Ventures
San Francisco, California
Writes $1M β $7M checks Β· typically $4M
About
Alexander Rosen is Managing Partner and co-founder of Ridge Ventures, where he invests in B2B software companies applying AI to change end-user experiences. He was previously a Partner at Sprout Group leading its Internet and Software group, began his venture career as an associate at General Atlantic Partners, and earlier developed software for Telcordia and AT&T Bell Labs. He holds BS degrees in Electrical Engineering and Economics from MIT and an MBA from Stanford.
Alexander Rosen @rosenrosen
On an Alaska flight with @Starlink. Really impressive internet speeds - makes it painful to fly United/JetBlue: https://t.co/njSlJDEDEG #speedtest
Jul 28, 2026 Β· β₯ 3
Alexander Rosen @rosenrosen
Wembanyama is like LeBron was early in his career: invisible in Q4 of games that matter.
Jun 9, 2026
Alexander Rosen @rosenrosen
Congratulations to @CTurlica and the entire @maintainx team on the proposed acquisition by @autodesk! This is a generational founder who has built a generational company. @ridgevc is proud to have been a significant investor since your seed round in 2019. Special thanks to
May 29, 2026 Β· β₯ 3
Invests in
AI & Machine LearningEnterprise SoftwareSaaS
Experience
- Ridge VenturesManaging Partnercurrent2006 β presentSan Francisco Bay Area
- Stanford University Graduate School of BusinessGSB Trust Board Member. Chair, Venture Fund Groupcurrent2017 β presentSan Francisco Bay Area
- OnticBoard Observercurrent2020 β present
- Horizon3.aiSeed Investorcurrent2020 β present
- MaintainXSeed Investorcurrent2019 β present
- SafeGraphBoard Membercurrent2017 β presentSan Francisco Bay Area
- ThirdLoveInvestorcurrent2012 β presentSan Francisco, California
- OfferFitBoard Observer2023 β 2025
- MintedBoard Member2008 β 2023San Francisco Bay Area
- SmartlingBoard Member2011 β 2021New York City Metropolitan Area
- BrazeInvestor2013 β 2021New York City Metropolitan Area
- Chubbies ShortsBoard Member2014 β 2021
- FastlyInvestor and Board Observer2014 β 2019San Francisco Bay Area
- MindMeldBoard Member2011 β 2017San Francisco Bay Area
- Krux DigitalBoard Member2011 β 2016San Francisco Bay Area
- VidibleBoard Member2013 β 2014San Francisco Bay Area
- Sprout GroupGeneral Partner1996 β 2003
- General Atlantic PartnersJunior Associate1993 β 1994
- Credit SuisseAnalyst1990 β 1993
Education
- Stanford University Graduate School of BusinessMBA1994 β 1996
- Massachusetts Institute of TechnologyBachelor of Science (BS), Economics1985 β 1990
Skills & more
+12 more
Angel InvestingMobile DevicesAnalyticsVenture FinancingGo-to-market StrategyPrivate EquityProduct MarketingMobile ApplicationsStrategySaaSEnterprise SoftwareSoftware as a Service (SaaS)From Alex's professional profile.
Same school
Also attended Stanford University Graduate School of Business1,147
+ 1,141 more
Also attended Massachusetts Institute of Technology849
+ 843 more
Shared employers
Also worked at Stanford University Graduate School of Business147
+ 141 more
Also worked at Ontic5
Also worked at SafeGraph2
Deals Β· 3
Outlier AIBoard seat
via Ridge Ventures Β· filed Feb 2018 Β· $6.4M raise
Vouch FinancialBoard seat
via Ridge Ventures Β· filed Jan 2015 Β· $5K raise
MaintainXLed round
via Ridge Ventures
Attribution from SEC filings, press coverage, and firm rosters.
Colleagues at Ridge Ventures
Network12
Investors connected to Alex in public investor directories β a warm-intro map.





















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