Radiant Nuclear
PrivateLast Round
Series D
12/17/2025
Est. Valuation
$1.8B
Total Funding Raised
$619.1M
Momentum Score
50 /100
Company Overview
Radiant (Alternative Energy Equipment) is a clean energy company that develops zero-emissions nuclear microreactor technology as a cost-effective and portable alternative to fossil fuels for military and commercial applications.
Sector
Energy & Sustainability
Verticals
Renewable Energy, Defense Tech, Cloud Infrastructure
Business Model
B2G
Customer Profile
Government Contracts, Hardware Sales, Services & Consulting
AI Layer
Non-AI
Keywords
Historical Pricing
Historical view of private secondary pricing and transaction trends.
Radiant Nuclear Comps
Public and private peers based on sector, stage, and business model.
Radiant Nuclear Funding Rounds
Historical fundraising activity
| Round | Date | Amount Raised | Valuation | Investors | Sources |
|---|---|---|---|---|---|
| Series D | 12/17/2025 | ||||
| Series C | 5/28/2025 | ||||
| Series C | 10/23/2024 | ||||
| Series B | 4/24/2023 | ||||
| Grant | 3/22/2023 | ||||
Series A | 3/9/2022 |
Secondary Market Activity
Bids, offers, and trades by month
| Operation | Date | Price | Size | Share Class | Structure |
|---|---|---|---|---|---|
OFFER |
Key People
Founding team and executive leadership
Radiant Nuclear Investors
Notable investors and investment history
| Investor | Rounds |
|---|---|
| Andreessen Horowitz | Series D, Series C, Series B |
| Also Capital | Series A, Seed, Series C |
| Friends & Family Capital | Series D |
| Washington Harbour Partners | Series D, Series C |
| Union Square Ventures | Series D, Series C, Series A |
| Gigascale Capital | Series C |
| Cantos Ventures | Series B |
Market signals
Structured signals derived from secondary market and firmographic data.
- Jan 1, 2028
Initial customer deliveries of Kaleidos microreactor planned for 2028.
- Jan 1, 2028
Targeting initial microreactor deliveries to begin in 2028.
Radiant Nuclear Filings
SEC and related filings with document metadata.
| Typed | Date | Amount Offered | Amount Sold | Filling | Pages | Download |
|---|---|---|---|---|---|---|
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Frequently Asked Questions
Common questions about Radiant Nuclear's valuation, stock price, and market status.
