Thomas Leffler, Angel investor in Orange County is an active investor based in Orange County, California. This profile covers what Thomas Leffler backs, at which stage, and how founders can reach out in 2026.
CEO/Co-Founder of LERO, offering blockchain services and IP solutions. Also an Investor in ASTRID, an AI healthcare platform, and a Board Member for Project Insight.
Thomas Leffler invests in Fintech, Healthcare & Biotech and Crypto & Web3, typically at Seed, Series A and Early Stage Venture.
- Investor type
- AngelVC
- Stages
- SeedSeries AEarly Stage Venture
- Invests in
- FintechHealthcare & BiotechCrypto & Web3
- Location
- Orange County, California
- Typical check
- $500K
How to reach Thomas Leffler
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About this profile
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Cite this page
Round Funded. "Thomas Leffler." Round Funded investor database, updated November 2, 2026.
Stable URL, it will not change: https://www.roundfunded.com/en/investor/thomas-leffler
Frequently Asked Questions
Who is Thomas Leffler?
Thomas Leffler, Angel investor in Orange County is an active investor based in Orange County, California. Thomas Leffler invests in Fintech, Healthcare & Biotech and Crypto & Web3, typically at Seed, Series A and Early Stage Venture.
What does Thomas Leffler invest in?
Thomas Leffler invests in Fintech, Healthcare & Biotech and Crypto & Web3, typically at Seed, Series A and Early Stage Venture. Match your sector and stage, then reach out with a personalized pitch.
What stage does Thomas Leffler invest at?
Thomas Leffler typically invests at Seed, Series A and Early Stage Venture. Lead with traction that fits the stage when you reach out.
What is Thomas Leffler's typical check size?
Thomas Leffler typically writes checks around $500K. 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.