Key facts
- It has raised $5.7M; the latest was Early Stage VC ($5.2M) in Sep 2025.
- Notable investors include Y Combinator, FundersClub.
- Status: Privately Held (backing).
Investors
2- ·The complete investor list — 2 names
- ·Watchlist + deal alerts for Duranium
- ·The full record, as it builds
Funding rounds
No funding rounds for Duranium are on record yet — either the company hasn't raised institutional capital, or the raise hasn't surfaced in our sources.
About Duranium
Developer of a metal production technology designed to enable low-emission processing of critical minerals. The company offers a reactor system that recycles CO₂ into carbon monoxide for reuse as feedstock, and generates bleaching-agent co-products, enabling critical mineral processors to reduce emissions and dependency on imports.
- Sector
- Materials and Resources
- HQ
- Alameda, CA, United States
- Founded
- 2025
- Employees
- 9
- Website
- duranium.co/
- Ownership
- Privately Held (backing)
Duranium doesn't have a composite mark yet — a PA Mark is published once enough pricing inputs exist (trade prints, fund marks, round prices). The rest of the record below builds toward it.
Recorded secondary trades
No secondary trades in Duranium shares have been recorded yet. When a print lands — third-party, direct report, or platform — it appears here with structure, source, and price.
Institutional fund marks
No SEC-registered fund has reported a fair-value mark on Duranium in its N-PORT filings yet. We sweep new filings monthly.