French natural hydrogen exploration company
Mantle8 has raised €36M across 3 funding rounds from 10 investors, most recently a Series A round in May 2026. Based in Paris, France; active in Energy. Data as of 6 Aug 2026.
Timing: too soon vs cohort gap · momentum up. Funding-only estimates, not predictions and not investment advice — see signals.
| Date |
|---|
| Stage |
|---|
| Amount |
|---|
| Investors |
|---|
| 2026-05-13 | Series A | €31M | Breakthrough Energy Ventures,Calderion,Ecotechnologies 2 fund,IP Group,Sandwater,Wind Capital | View deal → |
| 2026-03-10 | Grant | €2.1M | European Union’s Just Transition Fund | View deal → |
| 2025-02-07 | Seed | €3.4M | Angel Investors,Breakthrough Energy Ventures Europe (BEV-E),Kiko Ventures | View deal → |
