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Funding round

Who invested in Mariana Minerals? $310M Series B (Aug 2026)

Mariana Minerals raised $310M in a Series B round, reported by Fortune on August 3, 2026. Investors named in the coverage: a16z. DryPowder tracks 1 funding round for Mariana Minerals from 2 news reports, as of August 3, 2026.

Updated · from 2 news reports · all tracked rounds

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Mariana Minerals's funding round

Newest first

$310M · Series B

Investors named in the coverage

Sources

Investors are the firms the press named in its coverage of the round, and "Lead" marks a firm the report says led it. Amounts are shown only when the reported figure appears in the coverage; valuations are not round sizes. Firms with a DryPowder profile are linked.

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Frequently asked questions

Who invested in Mariana Minerals?

a16z was named as investors in Mariana Minerals's Series B round, according to Fortune (August 3, 2026). Investors are listed as named in the news coverage; the company's full cap table is not public.

How much has Mariana Minerals raised?

$310M (Series B), reported August 3, 2026. Amounts are as reported by the press and are not audited.

When did Mariana Minerals raise its latest round?

Mariana Minerals's most recent round was reported on August 3, 2026 by Fortune and Fortune via Techmeme.

Which of Mariana Minerals's investors have a DryPowder profile?

Andreessen Horowitz: its profile shows recent SEC Form D filings, partners and investment focus.

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Sources

Updated