# Mariana Minerals





Canonical: https://uniquebase.ai/companies/mariana-minerals
Stable identifier: UB-C9421
Snapshot captured: 2026-10-20T18:05:01.520Z
English updated: 2026-10-20T18:25:20.256Z

## Funding

Listed 1 record.
Latest: $310M (Series B), 2026-08-03.

- 2026-08-03 · $310M · Series B · Andreessen Horowitz, Breakthrough Energy Ventures, Khosla Ventures, Mitsubishi Corporation · https://www.prnewswire.com/news-releases/mariana-minerals-raises-310-million-series-b-led-by-khosla-
  > On 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)

## Valuation

Listed 1 record.

- 2026-08-03 · amount unavailable · Series B · Andreessen Horowitz, Breakthrough Energy Ventures, Khosla Ventures, Mitsubishi Corporation · https://www.prnewswire.com/news-releases/mariana-minerals-raises-310-million-series-b-led-by-khosla-
  > On 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)

## Revenue

No revenue records are listed yet.


## Team

- [Baker Tilney](/people/baker-tilney)
- [Caldwell](/people/caldwell)
- [Juan Lozano](/people/juan-lozano)

## Products

- [Mariana Minerals](/products/mariana-minerals)

## Investors

- [Andreessen Horowitz](/institutions/andreessen-horowitz)
- [Breakthrough Energy Ventures](/institutions/breakthrough-energy-ventures)
- [Khosla Ventures](/institutions/khosla-ventures)
- [Mitsubishi Corporation](/institutions/mitsubishi-corporation)

## Sources

- No source links are available for this profile.