Mariana Minerals
PrivateLast Round
Series B
Aug 3, 2026
Est. Valuation
$1.5B
Total Funding Raised
$395M
Momentum
Top 1%
of companies Caplight tracks
Company Overview
Mariana Minerals operates in Frontier & Industrial Tech and is based in San Francisco, California. Its latest recorded funding round was a Series B round in August 2026.
Mariana Minerals is a software-first, vertically integrated minerals company that develops and operates projects to supply critical minerals for the energy, AI, and defense technology sectors.
Sector
Frontier & Industrial Tech
Verticals
Industrial Robotics, Autonomous Vehicles, Supply Chain
Business Model
B2B
Customer Profile
Services & Consulting
AI Layer
Application
Historical Pricing
Historical view of private secondary pricing and transaction trends.
Mariana Minerals Comparables
Compare Mariana Minerals with similar companies based on industry and business-model similarity.
| Company | Similarity | Market Cap |
|---|---|---|
| KoBold Metals | 78% | |
| Plum Acquisition Corp. IV | 76% | |
| Standard Lithium Ltd. | 68% |
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Mariana Minerals Funding Rounds
Historical fundraising activity
| Round | Date | Amount Raised | Valuation | Investors | Sources |
|---|---|---|---|---|---|
| Series B | Aug 3, 2026 | ||||
| Series B | Jun 1, 2026 | ||||
| Series A | Jul 21, 2025 | ||||
| Seed | Sep 27, 2024 |
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Key People
Founding team and executive leadership
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Mariana Minerals Investors
Notable investors and investment history
| Investor | Rounds |
|---|---|
| Andreessen Horowitz | Series B, Series A |
| Halo Experience Company | Series B |
| F4 Fund | Seed |
| Greenoaks Capital Partners | Series B |
| Washington Harbour Partners | Series B |
| Khosla Ventures | Seed, Series A, Series B |
| The Halo Fund | Series B |
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Market signals
Structured signals derived from secondary market and firmographic data.
- Oct 15, 2026
Launched a first-of-its-kind integrated pyrometallurgical and hydrometallurgical flowsheet in Houston.
- Oct 8, 2026
MarianaOS, a proprietary OS for engineering and construction, is now in development and internal use.
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Recent news
Latest coverage and updates
- integrates_withOct 1, 2026
Mariana Minerals will integrate its operation system with Dyno Nobel Inc.’s autonomous blasting technology alongside a prototype trial at the Copper One mine in Utah.
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Mariana Minerals 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 Mariana Minerals's valuation, stock price, and market status.
Is Mariana Minerals a public or private company?
Mariana Minerals is a private company.
What is the current stock price of Mariana Minerals?
Mariana Minerals is a private company, so its shares have no public market price. Caplight tracks Mariana Minerals's secondary market activity and provides MarketPrice™ estimates of its share price to Caplight users.
How much is Mariana Minerals worth (valuation)?
Mariana Minerals's valuation is estimated at $1.5B based on funding round data.
Can I buy Mariana Minerals stock?
Mariana Minerals shares may be available on secondary markets subject to transfer restrictions. Caplight facilitates secondary market transactions for accredited investors.
When was Mariana Minerals's last funding round?
Mariana Minerals's most recent funding round was Series B on August 3, 2026.
Who are the main investors in Mariana Minerals?
Key investors in Mariana Minerals include Andreessen Horowitz, F4 Fund, Khosla Ventures.
Will Mariana Minerals IPO soon?
No public IPO plans have been announced for Mariana Minerals.
How can I track Mariana Minerals secondary market activity?
Caplight tracks bids, offers, and trades in Mariana Minerals's shares on secondary markets.