Antares Nuclear
PrivateLast Round
Series C
Jul 27, 2026
Total Funding Raised
$673M
Momentum
Top 1%
of companies Caplight tracks
Company Overview
Antares Nuclear is a climate and clean energy company that designs and manufactures modular, transportable fission microreactors for strategic energy applications on Earth, in space, and underwater.
Sector
Energy & Sustainability
Verticals
Defense Tech, Energy Storage
Business Model
B2G
Customer Profile
Government Contracts, Hardware Sales
AI Layer
Non-AI
Keywords
Historical Pricing
Historical view of private secondary pricing and transaction trends.
Antares Nuclear Comparables
Compare Antares Nuclear with similar companies based on industry and business-model similarity.
| Company | Similarity | Market Cap |
|---|---|---|
| Radiant Nuclear | 86% | |
| Hadron Energy | 78% | |
| NANO Nuclear Energy | 77% |
Antares Nuclear Funding Rounds
Historical fundraising activity
| Round | Date | Amount Raised | Valuation | Investors | Sources |
|---|---|---|---|---|---|
| Series C | Jul 27, 2026 | ||||
| Grant | Jun 5, 2026 | ||||
| Grant | Apr 1, 2026 | ||||
| Grant | Mar 3, 2026 | ||||
| Grant | Jan 26, 2026 | ||||
Series B | Dec 2, 2025 |
Key People
Founding team and executive leadership
Antares Nuclear Investors
Notable investors and investment history
| Investor | Rounds |
|---|---|
| Banter Capital | Series A, Seed |
| United States Department of Defense | Grant |
| U.S. Department of Defense (DIU) | Grant |
| Industrious Ventures | Series C, Series B |
| Paradigm | Series C |
| United States Air Force | Grant |
| Alt Capital | Series B, Series A |
Market signals
Structured signals derived from secondary market and firmographic data.
- Oct 1, 2026
Grew 25% QoQ, from 119 to 149 employees.
- Sep 1, 2026
Grew 29% QoQ, from 110 to 142 employees.
Recent news
Latest coverage and updates
- is_developingSep 17, 2026
Antares is developing compact microreactors on Jul 1st '23.
- receives_financingSep 12, 2026
Antares received financing of $161M in Strategic Breakthrough on Sep 11th '26.
- receives_awardSep 11, 2026
Antares is selected for the $161 million Strategic Breakthrough award on Sep 11th '26
- expands_facilitiesAug 31, 2026
Antares expands facilities to Texas, United States, Northern America, Americas.
- expands_facilitiesAug 26, 2026
Antares expanded facilities to North Carolina, United States, Northern America, Americas on Aug 26th '26.
Antares Nuclear Filings
Explore SEC and related filing metadata, where available.
| Type | Date | Amount Offered | Amount Sold | Filing | Pages | Download |
|---|
Filing documents are not displayed on this public page. Request access to learn about available coverage.
Request accessFrequently Asked Questions
Common questions about Antares Nuclear's valuation, stock price, and market status.
Is Antares Nuclear a public or private company?
Antares Nuclear is a private company.
What is the current stock price of Antares Nuclear?
Antares Nuclear is a private company, so its shares have no public market price. Caplight tracks Antares Nuclear's secondary market activity and provides MarketPrice™ estimates of its share price to Caplight users.
How much is Antares Nuclear worth (valuation)?
Valuation information for Antares Nuclear is not publicly available.
Can I buy Antares Nuclear stock?
Antares Nuclear shares may be available on secondary markets subject to transfer restrictions. Caplight facilitates secondary market transactions for accredited investors.
When was Antares Nuclear's last funding round?
Antares Nuclear's most recent funding round was Series C on July 27, 2026.
Who are the main investors in Antares Nuclear?
Key investors in Antares Nuclear include Paradigm, Alt Capital, Shine Capital, Caffeinated Capital.
Will Antares Nuclear IPO soon?
No public IPO plans have been announced for Antares Nuclear.
How can I track Antares Nuclear secondary market activity?
Caplight tracks bids, offers, and trades in Antares Nuclear's shares on secondary markets.