/Companies

Mantle8

33 employees on LinkedIn · 6 known investors

Find your way into Mantle8

Sign up to find every way you can get introduced to Mantle8

  • Your email: who you already know at Mantle8, and who your contacts know
  • 2nd- and 3rd-degree connections: people you know who worked, studied or invested with the Mantle8 team
  • Your LinkedIn: the connections who can make the intro for you

We rank every route by how warm it is, so you raise on warm intros instead of cold emails.

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.

Founders & leadership

EMEmmanuel Masini
Emmanuel MasiniFounder
EM
Emmanuel Masini (Manu)Founder & CEO

Investors · 6

Funding

SEC filings, press & company announcements
  • Undisclosed amountSeries AMay 2026 · 6 sources
    Source ↗

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

In the news

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, Emmanuel Masini (Manu).
Who are Mantle8's investors?
Mantle8's investors include Breakthrough Energy Ventures, Kiko Ventures, Sandwater, Wind Venture, Bpifrance, IP Group.