# Mariana Minerals funding: rounds and investors > Mariana Minerals has raised $384M across 2 rounds since 2026. Investors include Y Combinator, Andreessen Horowitz and Khosla Ventures. Source: https://millionrounds.com/company/mariana-minerals (Millionrounds; every figure on the page links to its filing or article) United States · [Series B startup](https://millionrounds.com/companies) # Who invested in *Mariana Minerals* 2 rounds we have observed, with the 6 investors named in them. Every figure came from a named source, and where the company reported a raise to the SEC itself, that is shown beside it. AI Raised 3 months ago Funding summary Updated 26 Oct 2026 **$384M** raised across 2 rounds since 2026, from 2 sources **$74M** Round **$310M** Series B - **Latest round:** Series B, $310M Aug 2026 - **Step-up i:** 4.2× - **Investors:** 6 See who backed them ## The funding story Each circle is a round, placed by date and sized by amount. The line above is the running total. 2027 **$74M** Round **$310M** Series B - **First round:** Round, $74M - **Biggest round:** $310M - **Between rounds:** 4 months ## The rounds - **Aug 2026** Series B **$310M** *6 new* [Y Combinator](https://millionrounds.com/fund/y-combinator) [Andreessen Horowitz](https://millionrounds.com/fund/andreessen-horowitz) [Khosla Ventures](https://millionrounds.com/fund/khosla-ventures) [Greycroft](https://millionrounds.com/fund/greycroft) [Greenoaks](https://millionrounds.com/fund/greenoaks) [Noa](https://millionrounds.com/fund/noa) Source recorded SEC filing: $310M sold - **Apr 2026** Round **$74M** No investor was named in the report. Filed with the SEC (Form D); no report of this raise yet SEC filing: $74M sold, first sale Apr 2026 ## Founders and team From Mariana Minerals's own website: 10 on the team. - **Turner Caldwell** CEO - **Angelo Braun** Chief People Officer - **Baker Tilney** CFO - **James Hoggard** COO - **Juan Lozano** CTO - **Sara Maroofi** Chief of Staff - **Darian Orozco** VP, Development & Engineering - **Ian Stewart** VP, Business Operations - **Kara Evanoff** VP, Commercial & Product - **Amanda Lee** General Counsel ## Who was in which round The busiest backers across the latest rounds. A filled square is a round they joined; a dark one, a round they led. **Round** 2026 **Series B** 2026 [Y Combinator](https://millionrounds.com/fund/y-combinator) [Andreessen Horowitz](https://millionrounds.com/fund/andreessen-horowitz) [Khosla Ventures](https://millionrounds.com/fund/khosla-ventures) [Greycroft](https://millionrounds.com/fund/greycroft) [Greenoaks](https://millionrounds.com/fund/greenoaks) [Noa](https://millionrounds.com/fund/noa) ## Everyone who backed them [Y Combinator](https://millionrounds.com/fund/y-combinator) Accelerator **1** round [Andreessen Horowitz](https://millionrounds.com/fund/andreessen-horowitz) VC firm **1** round [Khosla Ventures](https://millionrounds.com/fund/khosla-ventures) VC firm **1** round [Greycroft](https://millionrounds.com/fund/greycroft) VC firm **1** round [Greenoaks](https://millionrounds.com/fund/greenoaks) VC firm **1** round [Noa](https://millionrounds.com/fund/noa) VC firm **1** round Missing a round, or an investor who was in one? [Tell us](https://millionrounds.com/corrections?slug=mariana-minerals). ## Also claim to have backed them These 4 firms list Mariana Minerals as a portfolio company on their own websites, but no report of a round names them. They are the firms' own claims, kept apart from the rounds above. [In-Q-Tel](https://millionrounds.com/fund/iqt) Accelerator Per its own site [Earthshot Ventures](https://millionrounds.com/fund/earthshot-ventures) VC firm Per its own site [Pax Ventures](https://millionrounds.com/fund/pax-ventures) VC firm Per its own site [Inception Studio Capital](https://millionrounds.com/fund/inception-studio-capital) Accelerator Per its own site ## Quick answers about Mariana Minerals ### Who invested in Mariana Minerals? Mariana Minerals's investors include Y Combinator, Andreessen Horowitz, Khosla Ventures, Greycroft and Greenoaks, and 1 more on record. ### How much has Mariana Minerals raised? Mariana Minerals has raised $384M across 2 rounds since 2026. ### When did Mariana Minerals last raise? Mariana Minerals's most recent round was a Series B of $310M in Aug 2026. ### What was Mariana Minerals's biggest round? Its most recent round, $310M in Aug 2026, is also its largest on record. ### Who backed Mariana Minerals first? Mariana Minerals's first round on record, in Aug 2026, was backed by Y Combinator, Andreessen Horowitz and Khosla Ventures and 3 others. ### What stage is Mariana Minerals at? Mariana Minerals's latest named round is a Series B, in Aug 2026. ### Where is Mariana Minerals based? Mariana Minerals is based in the United States. ## Companies like Mariana Minerals In the same sector, and raised in the last eighteen months. 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