Mantle8
PrivateLast Round
Series A
May 13, 2026
Total Funding Raised
$41.9M
Momentum
Top 5%
of companies Caplight tracks
Company Overview
Mantle8 operates in Energy & Sustainability and is based in Grenoble. Its latest recorded funding round was a Series A round in May 2026.
Mantle8 is an energy exploration company that develops proprietary geoscience and imaging technologies to identify and assess natural hydrogen reservoirs.
Sector
Energy & Sustainability
Verticals
Alternative Fuels, Energy Management, Environmental Monitoring
Business Model
B2B
Customer Profile
Services & Consulting, Data as a Service
AI Layer
Application
Historical Pricing
Historical view of private secondary pricing and transaction trends.
Mantle8 Comparables
Compare Mantle8 with similar companies based on industry and business-model similarity.
| Company | Similarity | Market Cap |
|---|---|---|
| Snowfox Discovery | 87% | |
| Terrensis | 79% | |
| H2Au | 78% |
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Mantle8 Funding Rounds
Historical fundraising activity
| Round | Date | Amount Raised | Valuation | Investors | Sources |
|---|---|---|---|---|---|
| Series A | May 13, 2026 | ||||
| Grant | Mar 10, 2026 | ||||
| Seed | Feb 7, 2025 |
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Key People
Founding team and executive leadership
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Mantle8 Investors
Notable investors and investment history
| Investor | Rounds |
|---|---|
| IP Group | Series A |
| European Commission | Grant |
| Sandwater | Series A |
| Breakthrough Energy Ventures | Seed, Series A |
| Wind Capital | Series A |
| Bpifrance | Series A |
| Kiko Ventures | Series A, Seed |
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Market signals
Structured signals derived from secondary market and firmographic data.
- Aug 18, 2026
Grew 27% QoQ from 26 to 33 employees.
- Jul 5, 2026
Launched FLOW, its largest natural hydrogen exploration campaign.
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Recent news
Latest coverage and updates
- integrates_withNov 2, 2026
Mantle8 intends to combine Geologix Limited geological modelling with its HOREX 4D passive imaging system to interpret survey data around the Semail Ophiolite in Oman and the UAE.
- partners_withOct 30, 2026
On Oct 30th '26, Mantle8 and Hydrogen Europe partner to advocate for natural hydrogen exploration across Europe, seek recognition in the European Union’s energy framework, and support a proposed €1 billion program across at least ten EU Member States.
- attends_eventOct 28, 2026
Mantle8 participates in a ceremonial handover presenting an open letter at European Hydrogen Week in Belgium on Oct 28th '26.
- expands_offices_toSep 11, 2026
Mantle8 opens its first permanent office outside Europe in Dubai on Sep 8th '26, establishing a regional headquarters to advance natural hydrogen exploration in the Middle East.
- hiresSep 8, 2026
Mantle8 hires Jean-Valery Garcia as Regional Director, Middle East, responsible for building the local team and developing commercial and institutional relationships.
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Mantle8 Filings
Explore SEC and related filing metadata, where available.
| Type | Date | Amount Offered | Amount Sold | Filing | Pages | Download |
|---|
Filing documents are not displayed on this public page. Request access to learn about available coverage.
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Frequently Asked Questions
Common questions about Mantle8's valuation, stock price, and market status.
Is Mantle8 a public or private company?
Mantle8 is a private company.
What is the current stock price of Mantle8?
Mantle8 is a private company, so its shares have no public market price. Caplight tracks Mantle8's secondary market activity and provides MarketPrice™ estimates of its share price to Caplight users.
How much is Mantle8 worth (valuation)?
Valuation information for Mantle8 is not publicly available.
Can I buy Mantle8 stock?
Mantle8 shares may be available on secondary markets subject to transfer restrictions. Caplight facilitates secondary market transactions for accredited investors.
When was Mantle8's last funding round?
Mantle8's most recent funding round was Series A on May 13, 2026.
Who are the main investors in Mantle8?
Key investors in Mantle8 include Sandwater, Kiko Ventures.
Will Mantle8 IPO soon?
No public IPO plans have been announced for Mantle8.
How can I track Mantle8 secondary market activity?
Caplight tracks bids, offers, and trades in Mantle8's shares on secondary markets.