Key facts
- Mantle8’s last known valuation is $14.4M (Feb 2025).
- It has raised $4.5M; the latest was Grant ($2.4M) in Mar 2026.
- Notable investors include European Commission, Breakthrough Energy, IP Group, Kiko Ventures, Viridien.
- Status: Privately Held (backing).
- ·The complete investor list — 5 names
- ·Watchlist + deal alerts for Mantle8
- ·The full record, as it builds
Funding rounds
No funding rounds for Mantle8 are on record yet — either the company hasn't raised institutional capital, or the raise hasn't surfaced in our sources.
About Mantle8
Operator of geoscience technologies intended to identify and assess natural hydrogen resources. The company's platform offers integrated analysis of geological, geophysical and geochemical data with predictive modelling and multiphysics imaging, enabling researchers and energy industry participants to evaluate hydrogen potential and resource characteristics.
- Sector
- Energy
- HQ
- Grenoble, France
- Founded
- 2018
- Employees
- 23
- Website
- mantle8.com/
- Ownership
- Privately Held (backing)
Mantle8 doesn't have a composite mark yet — a PA Mark is published once enough pricing inputs exist (trade prints, fund marks, round prices). The rest of the record below builds toward it.
Recorded secondary trades
No secondary trades in Mantle8 shares have been recorded yet. When a print lands — third-party, direct report, or platform — it appears here with structure, source, and price.
Institutional fund marks
No SEC-registered fund has reported a fair-value mark on Mantle8 in its N-PORT filings yet. We sweep new filings monthly.