Sam Dubinsky
Principal at SDFX Ventures
New York, New York
Sam Dubinsky, Principal at SDFX Ventures is an active investor based in New York, New York. This profile covers what Sam Dubinsky backs, at which stage, and how founders can reach out in 2026.
Sam Dubinsky is a Principal at SDFX Ventures with a 20-year investment career across various sectors and is a crypto enthusiast.
- Investor type
- VCFamily Office
- Stages
- Early Stage VentureSeedSeries A
- Invests in
- SaaS & EnterpriseClimate & EnergyManufacturing & IndustrialCrypto & Web3
- Location
- New York, New York
- Typical check
- $500K
How to reach Sam Dubinsky
Angels and operators like Sam Dubinsky 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.
Connect with Sam Dubinsky
About this profile
This profile is part of Round Funded, an investor database and outreach platform for founders. It covers 60,000+ active VCs, angels, family offices and accelerators with verified contacts, lets you send pitches from your own Gmail, and includes a free Data Room for your raise.
Frequently Asked Questions
What does Sam Dubinsky invest in?
Sam Dubinsky invests in SaaS & Enterprise, Climate & Energy, Manufacturing & Industrial and Crypto & Web3, typically at Early Stage Venture, Seed and Series A. Match your sector and stage, then reach out with a personalized pitch.
What stage does Sam Dubinsky invest at?
Sam Dubinsky typically invests at Early Stage Venture, Seed and Series A. Lead with traction that fits the stage when you reach out.
What is Sam Dubinsky's typical check size?
Sam Dubinsky typically writes checks around $500K. Use it as a signal for whether your raise fits their stage.
How do I contact Sam Dubinsky?
Unlock Sam Dubinsky's verified email on Round Funded and send a personalized pitch. We surface only deliverable contacts so your outreach lands.
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.