Fundraising Fox

Mantle8

33 employees on LinkedIn · 4 known investors

Find your way into Mantle8

Mantle8 is a natural hydrogen exploration company developing proprietary geoscience technology—including its GeoLogix prospect-generation algorithm and HOREX multiphysics imaging—to locate and quantify naturally occurring hydrogen resources. It aims to produce commercially viable natural hydrogen as a fuel for industrial applications, building on geological research originally conducted at its predecessor consultancy M&U.

CleantechClimate TechDeep TechEnergy

Founders & leadership

EMEmmanuel Masini
Emmanuel MasiniinFounder

Investors · 4

Breakthrough Energy Ventures✓ verifiedBoston · $500K – $50M
Kiko Ventures✓ verifiedLondon
SandwaterOslo · $2.2M – $11M
Wind VentureParis

Funding

SEC filings, press & company announcements
  • Undisclosed amountSeries AMay 2026 · 4 sources
    Source ↗

Source: company announcements and press reports — follow each round's link for the claim.

In the news

Breakthrough Energy (@Breakthrough) on Xx.com · May 2026Mantle8 raises €31M in Series A funding to prove commercial viability of natural hydrogen production - Inside Ecologyinsideecology.com · May 2026Mantle8 raises €31m in Series A funding, exploration campaign targetedqcintel.com · May 2026France’s Mantle8 raises €31 million to fund the world’s most advanced natural hydrogen exploration and drilling campaign | EU-Startupseu-startups.com · May 2026Mantle8 Raises €31M Series A for Natural Hydrogen | Fuel Cells Worksfuelcellsworks.com · May 2026Mantle8 Raises €31M in Series A Fundingfinsmes.com · May 2026

Frequently asked questions

What does Mantle8 do?
Mantle8 is a natural hydrogen exploration company developing proprietary geoscience technology—including its GeoLogix prospect-generation algorithm and HOREX multiphysics imaging—to locate and quantify naturally occurring hydrogen resources. It aims to produce commercially viable natural hydrogen as a fuel for industrial applications, building on geological research originally conducted at its predecessor consultancy M&U.
Who founded Mantle8?
Mantle8 was founded by Emmanuel Masini.
Who are Mantle8's investors?
Mantle8's investors include Breakthrough Energy Ventures, Kiko Ventures, Sandwater, Wind Venture.