AfterRaise/Companies/Mariana Minerals

Mariana Minerals

USASan FranciscoEnergy & ClimateSeries B

Overview

Where Mariana Minerals is now

Mariana Minerals announced a Series B round of $310M on 4 August 2026, led by Khosla Ventures.

Observed Described in the funding announcement as "provider of a software-first, vertically integrated critical minerals platform". Source

Latest round
Series B
Amount
$310M
Announced
4 August 2026
Headquarters
San Francisco, USA
Sector
Energy & Climate
Investors
Khosla Ventures
Also participating
Andreessen Horowitz (a16z), Breakthrough Energy Ventures, Greenoaks, Halo Fund, Pax Ventures, StepStone Group, BHP Ventures, Washington Harbour Partners, Greycroft, General Innovation Capital Partners, Mitsubishi Corporation, In-Q-Tel (IQT), Earthshot Ventures
Relevant leadership
CEO Turner Caldwell

Current direction Inferred

What this company is working on

Market expansionProduct

Read from the company's own description of what the funding supports.

Momentum Inferred

AfterRaise Score

83
High momentum
1 funding signal in the last 90 days
Funding recency
40/40
announced within the last 30 days
Round scale
25/25
round size relative to the market
Funding stage
18/20
Series B
Funding cadence
0/15
one funding event tracked this year
Arriving with the signals layer
  • Hiring momentum Open roles and hiring pace
  • Market expansion New offices and new countries
  • Leadership Executive appointments
  • Product activity Launches and releases

Growth timeline

What has happened so far

  • 4 August 2026
    $310M Series B
    Led by Khosla Ventures.

Observed The timeline currently holds funding events, because those are the signals AfterRaise observes today. Hiring, leadership, expansion and product events join it with the signals layer.

Moves

Published by the company

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Opportunities

Work this company has opened

No open Opportunities listed

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Open to

Who may approach Mariana Minerals

Not yet specified

Mariana Minerals has not told AfterRaise which approaches it welcomes. Until it does, we do not assume. Offers to help are held and shown to the company, and the company decides whether to open a conversation.

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Helpful contributors

People who have contributed here

Nobody yet

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This room belongs to Mariana Minerals.

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Also moving

Other Energy & Climate companies

See the sector