Funding
Amounts as reported; USD estimates shown only when they matchListed 1 funding record. Latest funding: $310M (Series B), Aug 3, 2026.
| Date | Amount | Investors | Sources |
|---|---|---|---|
| Aug 3, 2026 | $310M · Series B | Andreessen Horowitz, Breakthrough Energy Ventures, Khosla Ventures, Mitsubishi Corporation | 1 source Source ↗ |
Evidence Mariana Minerals Raises $310M Series B Led by Khosla for Critical MineralsOn August 3, 2026, per PR Newswire, critical minerals development and production company Mariana Minerals raised $310M in a Series B led by Khosla Ventures with a16z, Breakthrough Energy Ventures and Mitsubishi Corporation. The company was co-founded in 2024 by Caldwell, Baker Tilney and Juan Lozano. Translated source brief, not a quotation. Check the original before citing. Sources · 1
Andreessen Horowitz, Breakthrough Energy Ventures, Khosla Ventures, Mitsubishi Corporation | |||
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Valuation
Amounts as reported; USD estimates shown only when they matchListed 1 valuation record.
No chartable valuation estimates yet.
1 listed record lack a clear date or positive USD estimate for the chart.
| Date | Amount | Investors | Sources |
|---|---|---|---|
| Aug 3, 2026 | — · Series B | Andreessen Horowitz, Breakthrough Energy Ventures, Khosla Ventures, Mitsubishi Corporation | 1 source Source ↗ |
Evidence Mariana Minerals Raises $310M Series B Led by Khosla for Critical MineralsOn August 3, 2026, per PR Newswire, critical minerals development and production company Mariana Minerals raised $310M in a Series B led by Khosla Ventures with a16z, Breakthrough Energy Ventures and Mitsubishi Corporation. The company was co-founded in 2024 by Caldwell, Baker Tilney and Juan Lozano. Translated source brief, not a quotation. Check the original before citing. Sources · 1
Andreessen Horowitz, Breakthrough Energy Ventures, Khosla Ventures, Mitsubishi Corporation | |||
Select ▸ on a row to see its source brief and links.
Revenue
Amounts as reported; USD estimates shown only when they matchNo revenue records are listed yet.
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Team, products & investors
Sources · 0Sources & provenance
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