Jay Reinfrank
Founder and Managing Partner at Hollandside Capital
Los Angeles, United States
Jay Reinfrank, Founder and Managing Partner at Hollandside Capital is an active investor based in Los Angeles, United States. This profile covers what Jay Reinfrank backs, at which stage, and how founders can reach out in 2026.
Jay Reinfrank is an investor, strategist, advisor, and venture partner, and the Founder and Managing Partner of Hollandside Capital.
Jay Reinfrank invests in SaaS & Enterprise, Artificial Intelligence and Climate & Energy, typically at Early Stage Venture and Late Stage Venture.
- Investor type
- VCInvestment Partner
- Stages
- Early Stage VentureLate Stage Venture
- Invests in
- SaaS & EnterpriseArtificial IntelligenceClimate & Energy
- Location
- Los Angeles, United States
- Typical check
- $3.8M
How to reach Jay Reinfrank
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Round Funded. "Jay Reinfrank." Round Funded investor database, updated November 3, 2026.
Stable URL, it will not change: https://www.roundfunded.com/en/investor/jay-reinfrank
Frequently Asked Questions
Who is Jay Reinfrank?
Jay Reinfrank, Founder and Managing Partner at Hollandside Capital is an active investor based in Los Angeles, United States. Jay Reinfrank invests in SaaS & Enterprise, Artificial Intelligence and Climate & Energy, typically at Early Stage Venture and Late Stage Venture.
What does Jay Reinfrank invest in?
Jay Reinfrank invests in SaaS & Enterprise, Artificial Intelligence and Climate & Energy, typically at Early Stage Venture and Late Stage Venture. Match your sector and stage, then reach out with a personalized pitch.
What stage does Jay Reinfrank invest at?
Jay Reinfrank typically invests at Early Stage Venture and Late Stage Venture. Lead with traction that fits the stage when you reach out.
What is Jay Reinfrank's typical check size?
Jay Reinfrank typically writes checks around $3.8M. Use it as a signal for whether your raise fits their stage.
How do founders reach investors like this?
Round Funded lists active investors with verified, professional contact details for signed-up founders. Filter by sector, stage and location, then send a personalized pitch from your own inbox.
What is Round Funded?
Round Funded is an investor database and outreach platform for startup founders. It lists 60,000+ active investors with verified contacts, filtered to recent investment activity, and lets founders send personalized pitches from their own Gmail, track replies, and share a free Data Room. Round+ starts at $99 per month with a 3-day trial.