/
Log inGet free API keyAccount
Menu
InvestorsCompaniesFit CheckerDocsPricingGet free API key

Companies / Mariana Minerals

Mariana Minerals

San Francisco, United States

Mariana Minerals builds and operates autonomous mines and refineries, supplying minerals critical to modern energy, AI, and defense technologies.

Mobility & LogisticsIndustrial & Manufacturing

Mariana Minerals, based in San Francisco, United States, has 8 investors on file, among them Andreessen Horowitz, Breakthrough Energy Ventures and Earthshot Ventures. Its latest round on record is Series B, 3 Aug 2026, of 2 rounds. Its site was last checked 13 Nov 2026: site answers.

marianaminerals.com

Funding

2 rounds on record
Latest roundSeries B3 Aug 2026
Since that round3 monthsno later round on record
Time between rounds1 yearon average, over 2 rounds
Investors in its rounds157 with a VCinfo profile
Aug 2026Series BLed by Khosla Ventures, with Andreessen Horowitz, Breakthrough Energy Ventures, General Innovation, Greycroft, Earthshot Ventures, IQT and 7 others
Jul 2025Series ALed by Andreessen Horowitz, a16z, with Khosla Ventures, Breakthrough Energy Ventures

Round sizes and total raised are on Fundup AI, our sister product for funding data.

SEC Form D filings

2 filings
$310M sold6 Aug 2026$73.5M sold of $76.0M offered7 Apr 2026

Filed by Mariana Minerals Co. with the SEC. A Form D reports a private offering; it is not a priced round.

Investors

8 investors on file
InvestorEvidenceType
Andreessen HorowitzPage + roundVenture capital
Breakthrough Energy VenturesPortfolio pageVenture capital
Earthshot VenturesPage + roundVenture capital
General InnovationPage + roundVenture capital
GreycroftPage + roundVenture capital
IQTPortfolio pageVenture capital
Khosla VenturesPage + roundVenture capital
PaxPortfolio pageVenture capital

A company is shown only after its own site answers and carries its name. Sites are checked again on a schedule, because domains lapse and get bought. Round stages and dates come from Fundup AI; investor links come from portfolio pages and rounds; other facts name their source when you point at them. How we grade the data

Free account · no card

Get Mariana Minerals and its investors as data

Look up any company's investors, or any investor's full portfolio, through one API key or MCP. A free account also opens Ask AI searches and alerts when Andreessen Horowitz adds a company.

Work email, sign-in link by email. Already have an account? Log in
Your API keyRead the docs
  • Ask AI5 plain-English investor searches a day
  • Full listsEvery portfolio row and two-firm overlap
  • API and MCP100 REST or MCP calls a month, one key
  • AlertsFollow 5 investors for portfolio and fund changes
VCinfo API
$ curl -H "X-API-Key: YOUR_KEY" \
  https://api.vcinfo.io/v1/companies/marianaminerals.com/investors

# also
GET /v1/companies/marianaminerals.com
GET /v1/companies/marianaminerals.com/news
The same data as an MCP server for Claude, Cursor and other AI tools. Set up MCP · Docs · Pricing