Jeffrey Leventhal
Managing Partner at S12F
New York City, New York
Jeffrey Leventhal, Managing Partner at S12F is an active investor based in New York City, New York. This profile covers what Jeffrey Leventhal backs, at which stage, and how founders can reach out in 2026.
- Investor type
- AngelVCPEInvestment Partner
- Stages
- Early Stage VentureSeed
- Invests in
- SaaS & EnterpriseMarketplaceHR & Future of WorkPropTech & Real EstateConsumer & Retail
- Location
- New York City, New York
- Typical check
- $375K
- Past investments
- 12
Notable investments
BackboneAI
Bolster
KustomerCore Technology SolutionsBodhalaDel-Air Heating, Air Conditioning, Plumbing and Electrical
MBO PartnersHow to reach Jeffrey Leventhal
Angels and operators like Jeffrey Leventhal reply to specific, personalized notes that show real traction, not mass blasts. Build a verified list, write a note that fits their thesis, and track replies, all on Round Funded.
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About this profile
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Cite this page
Round Funded. "Jeffrey Leventhal." Round Funded investor database, updated September 9, 2026.
Stable URL, it will not change: https://www.roundfunded.com/en/investor/jeffrey-leventhal
Frequently Asked Questions
What does Jeffrey Leventhal invest in?
Jeffrey Leventhal invests in SaaS & Enterprise, Marketplace, HR & Future of Work and PropTech & Real Estate, typically at Early Stage Venture and Seed. Match your sector and stage, then reach out with a personalized pitch.
What stage does Jeffrey Leventhal invest at?
Jeffrey Leventhal typically invests at Early Stage Venture and Seed. Lead with traction that fits the stage when you reach out.
What is Jeffrey Leventhal's typical check size?
Jeffrey Leventhal typically writes checks around $375K. Use it as a signal for whether your raise fits their stage.
How do founders reach investors like this?
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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.