# Mariana Minerals Co.

Startup profile on Capital Atlas: https://capitalatlas.ai/startups/mariana-minerals

- Industry: Mining
- Headquarters: San Francisco, US
- Website: www.marianaminerals.com
- Total disclosed funding: $311M
- Latest round: Series B (Jul 22, 2026)
- Investors on record: 14

## About

Mariana Minerals Co. is a US-based developer in the mineral sector, focused on extracting critical minerals essential for advanced technologies, including energy, artificial intelligence, and defense applications.Founded in 2024 and headquartered in San Francisco, US, Mariana Minerals Co. operates in the mineral extraction industry. The company has pivoted to emphasize sustainable practices in its operations. With three total deals and significant backing from Khosla Ventures in its latest Series B funding round, Mariana Minerals raised USD 310.00 mn. The company aims to meet the growing demand for critical minerals while serving clients primarily in North America, Europe, and Asia.Mariana Minerals specializes in the extraction and supply of critical minerals, including lithium, copper, nickel, cobalt, and graphite. These minerals are crucial for manufacturing batteries and electronics used by various industries, such as electric vehicles and renewable energy systems. The company adopts a software-first approach to enhance operational efficiency and better respond to market demands.Mariana Minerals generates revenue through direct sales of its minerals to industry players, primarily via long-term contracts and spot market sales. Its revenue model focuses on delivering high-purity minerals tailored to customer specifications, with pricing based on market conditions. Key products like lithium and copper are essential for sectors such as renewable energy and electric vehicle production.Mariana Minerals plans to expand its product offerings and geographic reach, targeting new markets in Asia and Europe by the end of 2025. The recent funding round of USD 310.00 mn, led by Khosla Ventures and including investors such as Andreessen Horowitz and Breakthrough Energy Ventures, will support these initiatives and enhance its operational capabilities.

## Funding rounds

- Series B, Jul 22, 2026, $311M — The Halo Fund Management Company, Khosla Ventures, Greycroft, StepStone, Andreessen Horowitz, Greenoaks Capital, In-Q-Tel, Breakthrough Energy Ventures, Mitsubishi, Washington Harbour Partners, BHP Ventures, Earthshot Ventures, General Innovation Capital, Pax

## Investors

- The Halo Fund Management Company (https://capitalatlas.ai/funds/the-halo-fund-management-company) — Series B
- Khosla Ventures (https://capitalatlas.ai/funds/khosla-ventures) — Series B
- Greycroft (https://capitalatlas.ai/funds/greycroft) — Series B
- StepStone (https://capitalatlas.ai/funds/stepstone) — Series B
- Andreessen Horowitz (https://capitalatlas.ai/funds/andreessen-horowitz) — Series B
- Greenoaks Capital (https://capitalatlas.ai/funds/greenoaks-capital) — Series B
- In-Q-Tel (https://capitalatlas.ai/funds/in-q-tel) — Series B
- Breakthrough Energy Ventures (https://capitalatlas.ai/funds/breakthrough-energy-ventures) — Series B
- Mitsubishi — Series B
- Washington Harbour Partners (https://capitalatlas.ai/funds/washington-harbour-partners) — Series B
- BHP Ventures (https://capitalatlas.ai/funds/bhp-ventures) — Series B
- Earthshot Ventures (https://capitalatlas.ai/funds/earthshot-ventures) — Series B
- General Innovation Capital (https://capitalatlas.ai/funds/general-innovation-capital) — Series B
- Pax (https://capitalatlas.ai/funds/pax) — Series B