Leo Fonseca, Principal at Graphene Ventures is an active investor based in Rio de Janeiro, Brazil. This profile covers what Leo Fonseca backs, at which stage, and how founders can reach out in 2026.
Leo Fonseca is a Principal at Graphene Ventures and an Adjunct Partner at AgFunder, with over 20 years of experience in venture capital and corporate finance.
Leo Fonseca invests in FoodTech & Agriculture and Fintech, typically at Early Stage Venture and Late Stage Venture.
- Investor type
- VCAngel
- Stages
- Early Stage VentureLate Stage Venture
- Invests in
- FoodTech & AgricultureFintech
- Location
- Rio de Janeiro, Brazil
- Typical check
- $3.8M
How to reach Leo Fonseca
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Round Funded. "Leo Fonseca." Round Funded investor database, updated November 3, 2026.
Stable URL, it will not change: https://www.roundfunded.com/en/investor/leo-fonseca
Frequently Asked Questions
Who is Leo Fonseca?
Leo Fonseca, Principal at Graphene Ventures is an active investor based in Rio de Janeiro, Brazil. Leo Fonseca invests in FoodTech & Agriculture and Fintech, typically at Early Stage Venture and Late Stage Venture.
What does Leo Fonseca invest in?
Leo Fonseca invests in FoodTech & Agriculture and Fintech, typically at Early Stage Venture and Late Stage Venture. Match your sector and stage, then reach out with a personalized pitch.
What stage does Leo Fonseca invest at?
Leo Fonseca typically invests at Early Stage Venture and Late Stage Venture. Lead with traction that fits the stage when you reach out.
What is Leo Fonseca's typical check size?
Leo Fonseca 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.