Who Just RaisedSan Francisco, CA · Energy · Form D filed Aug 6, 2026
Mariana Minerals Co. raised $310M
Mariana Minerals Co. is an energy company based in San Francisco, California. In a Form D filed with the SEC on August 6, 2026, it reported raising $310,499,477 from 23 investors as part of an offering of up to $310,499,477. The first sale in the offering took place on July 22, 2026.
Mariana Minerals is a software-first, vertically integrated minerals company focused on supplying the minerals critical to modern energy, AI, and defense technologies.
- 2nd Form D since 2026. Earlier new notices: Apr 7, 2026. All filings on EDGAR
$384M raised since 2020
2 Form D offerings, as reported to the SEC, the first in Apr 7, 2026. Amendments update a round; they aren't counted twice.
| Filed | Sold | Offering size | Investors |
|---|---|---|---|
| Aug 6, 2026 | $310M | $310M | 23 |
| Apr 7, 2026 | $73.5M | $76M | 27 |
86 open roles
From the company's job board, checked Oct 14, 2026. See them all ↗
- Full Stack Software Engineer San Francisco HQ
- Pilot Plant Operations Manager Houston, TX
- Senior Full Stack Software Engineer San Francisco HQ
- Mine Planner San Francisco HQ
- Lab Chemist Moab, UT
- Staff Process Engineer Houston, TX
- and 80 more
Lead score
53 out of 100
early raise hiring (86 roles) budget to spend website found young company
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Filing details
- Website
- marianaminerals.com
- Amount raised
- $310,499,477
- Offering size
- $310,499,477
- Investors so far
- 23
- First sale
- July 22, 2026
- Securities offered
- Equity
- Exemption claimed
- Rule 506(b)
- Industry
- Energy
- Headquarters
- San Francisco, California
- Incorporated
- Delaware, 2024
- Entity type
- Corporation
Filings
| Filed | Form | Raised | Offering size | Investors | Source |
|---|---|---|---|---|---|
| D (new notice) | $310,499,477 | $310,499,477 | 23 | SEC filing |
Figures come from the company's own filing with the SEC and are shown as reported. How to read a Form D.
Updated · Raises in the week of Aug 3, 2026 · Energy funding in California · August 2026 funding report
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