Radiant Nuclear
RN
Radiant Nuclear develops portable nuclear microreactors that produce electricity and heat on site. The company targets off-grid and remote applications where diesel generators are common, as well as backup power for critical facilities. Its work centers on small reactors meant to be deployed close to where power is needed.
Founded by Doug Bernauer (CEO), Bob Urberger (CTO)
Blended valuation$1.8B$1.8B secondary
Valuation history
Weekly blended valuation with priced funding rounds marked on the timeline.
$2.1B
blended valuationfunding round
May 31, 2021$0Oct 5, 2026
All rounds
7 funding rounds, newest first.
| Round | Announced | Raised | Post-money |
|---|---|---|---|
| Series D | Dec 17, 2025 | $300M | $1.8B |
| Series C | May 28, 2025 | $66M | $645.2M |
| Series C | Nov 15, 2024 | $100M | — |
| Series C | Nov 14, 2024 | $165M | $825.3M |
| Series B | Apr 18, 2023 | $40M | $163.6M |
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Investors
45 investors across all rounds.
- BVBoost VC
- AHAndreessen Horowitz
- DCDCVC
- USUnion Square Ventures
- FFFounders Fund
- CTChevron Technology Ventures
- DADraper Associates
- SGStepStone Group
- ACAlso Capital
- AVAlumni Ventures
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Secondary market activity
Recent buy and sell interest for Radiant Nuclear shares on the secondary market.
| Kind | Implied valuation | Price / share | Date |
|---|---|---|---|
| $1.8B | $42.32 | Oct 6, 2026 | |
| $1.8B | $42.32 | Sep 29, 2026 | |
| $1.7B | $40.35 | Jun 24, 2026 |
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Data as of Oct 14, 2026. Valuations are estimates blended from primary and secondary-market signals — not investment advice.