Alexander Rosen
Managing Partner at Ridge Ventures
San Francisco, California
Alexander Rosen, Managing Partner at Ridge Ventures is an active investor based in San Francisco, California. This profile covers what Alexander Rosen backs, at which stage, and how founders can reach out in 2026.
- Investor type
- VCMicro VCPE
- Stages
- SeedSeries ASeries BLate Stage Venture
- Invests in
- Artificial IntelligenceSaaS & EnterpriseFintechMarketplaceDeveloper Tools & DataRobotics & Automation
- Location
- San Francisco, California
- Typical check
- $2M
- Past investments
- 72
Notable investments
Vouch FinancialMarkkit
Loup
Discord
RevCascade
HDmessaging
KIXEYE
InCountry
JumpCloud
GuideSpark
Plain Vanilla
SafeGraphHow to reach Alexander Rosen
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Frequently Asked Questions
What does Alexander Rosen invest in?
Alexander Rosen invests in Artificial Intelligence, SaaS & Enterprise, Fintech and Marketplace, typically at Seed, Series A, Series B and Late Stage Venture. Match your sector and stage, then reach out with a personalized pitch.
What stage does Alexander Rosen invest at?
Alexander Rosen typically invests at Seed, Series A, Series B and Late Stage Venture. Lead with traction that fits the stage when you reach out.
What is Alexander Rosen's typical check size?
Alexander Rosen typically writes checks around $2M. Use it as a signal for whether your raise fits their stage.
How do I contact Alexander Rosen?
Unlock Alexander Rosen's verified email on Round Funded Accelerator and send a personalized pitch. We surface only deliverable contacts so your outreach lands.