Mantle8 Overview

  • Year Founded
  • 2018

Year Founded

  • Status
  • Private

  • Employees
  • 38

Employees

  • Latest Deal Type
  • Series A

  • Latest Deal Amount
  • $36.4M

  • Investors
  • 11

Mantle8 General Information

Description

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, along with predictive modelling and multiphysics imaging, enabling researchers and energy industry participants to evaluate hydrogen potential and resource characteristics.

Contact Information

Website
www.mantle8.com
Formerly Known As
M&U
Ownership Status
Privately Held (backing)
Financing Status
Venture Capital-Backed
Corporate Office
  • 31 Rue Aimé Requet
  • Bâtiment Xylo
  • 38000 Grenoble
  • France
+33 06
Primary Industry
Energy Exploration
Other Industries
Media and Information Services (B2B)
Other Commercial Services
Vertical(s)
CleanTech, Climate Tech
Corporate Office
  • 31 Rue Aimé Requet
  • Bâtiment Xylo
  • 38000 Grenoble
  • France
+33 06

Mantle8 Timeline

2023202420252026
Financing RoundCaptured Employee CountEstimated Employee Growth

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Mantle8 Valuation & Funding

Deal Type Date Amount Raised to Date Post-Val Status Stage
6. Later Stage VC (Series A) 13-May-2026 $36.4M Completed Generating Revenue
5. Grant 10-Mar-2026 Completed Startup
4. Accelerator/Incubator 01-Jan-2026 Completed Startup
3. Later Stage VC 12-Sep-2025 Completed Startup
2. Seed Round 07-Feb-2025 $3.52M $4.51M Completed Startup
1. Seed Round 05-Sep-2024 $994K $994K Completed Startup
To view Mantle8’s complete valuation and funding history, request access »

Mantle8 Cap Table

Stock # of Shares
Authorized		 Par Value Dividend Rate (%) Original
Issue Price		 Liquidation Liquidation
Pref. Multiple		 Conversion Price % Owned
Series A
Seed 2
Ordinary 75,382 $0.011742 $50.88 $50.88 1x $50.88 14.67%
Ordinary 42,855 $0.011742 $24.66 $24.66 1x $24.66 8.34%
To view Mantle8’s complete cap table history, request access »

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Mantle8 Patents

  • 3

    Total Documents Applications and Grants

  • Total Patents Families

  • Granted

  • 3

    Pending

  • Expiring in next 12 mo

Mantle8 Recent Patent Activity

Publication ID Patent Title Status First Filing Date Technology (CPC) Citations
GB-202504666-D0 Method and system for detecting subsurface h2 Pending 28-Mar-2025
WO-2026201530-A1 Methods, systems and apparatus for detecting subsurface hydrogen Pending 28-Mar-2025
WO-2026201626-A1 System and method for non-invasive detection of subsurface hydrogen accumulation using integrated seismic and gravimetric measurements Pending 28-Mar-2025 G01V11/00

Mantle8 Signals

Growth Rate

Weekly
Growth
Weekly Growth

Size Multiple

Median
Size Multiple

Key Data Points

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Mantle8 Investors (11)

Investor Name Investor Type Holding Investor Since Participating Rounds
Audacia Growth/Expansion Minority
Bpifrance Sovereign Wealth Fund Minority
Calderion Venture Capital Minority
Sandwater Venture Capital Minority
Wind Capital Venture Capital Minority
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Mantle8 FAQs

  • When was Mantle8 founded?

    Mantle8 was founded in 2018.

  • Where is Mantle8 headquartered?

    Mantle8 is headquartered in Grenoble, France.

  • What is the size of Mantle8?

    Mantle8 has 38 total employees.

  • What industry is Mantle8 in?

    Mantle8’s primary industry is Energy Exploration.

  • Is Mantle8 a private or public company?

    Mantle8 is a Private company.

  • What is the current valuation of Mantle8?

    The current valuation of Mantle8 is .

  • What is Mantle8’s current revenue?

    The current revenue for Mantle8 is .

  • How much funding has Mantle8 raised over time?

    Mantle8 has raised $40.9M.

  • Who are Mantle8’s investors?

    Audacia, Bpifrance, Calderion, Sandwater, and Wind Capital are 5 of 11 investors who have invested in Mantle8.

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