Develops portable nuclear microreactors as clean energy alternatives to diesel generators, providing both electrical and thermal power solutions.
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Highest Bid
$ 260.80
Lowest Offer
$ 188.50
Last Trade
$ 234.00
Live Orders
1,298
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Overview
Radiant is a company developing portable nuclear microreactors designed to replace diesel generators, providing clean and resilient power solutions. Their flagship product, Kaleidos, is a compact reactor capable of generating electricity and thermal power for heating or water desalination. Kaleidos operates without on-site water use, utilizing air cooling, and features a passive cooling system for enhanced safety.
Radiant Funding
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| Financing Round | Date | Amount | Price per share | Valuation |
|---|---|---|---|---|
| Round | Date | Amount | PPS | Valuation |
| Series D | Feb 13, 2025 | 65M | ||
| Series C | Oct 23, 2024 | 100M | ||
| Series B | Apr 04, 2023 | 41M | ||
| Series A | Feb 18, 2022 | 612K | ||
| Series A | Feb 18, 2022 | 10M | ||
| Series A | Feb 18, 2022 | 650K | ||
| Series A | Feb 18, 2022 | 717K | ||
| Series A | Feb 18, 2022 | 315K |
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Radiant Management Team
Investors
Washington Harbour Partners
Union Square Ventures
Founders Fund
McKinley Alaska
Felicis Ventures
Draper Fisher Jurvetson (DFJ)
Decisive Point
DCVC
Chevron Technology Ventures Investments
Cantos Ventures
Boost VC
Andreessen Horowitz
Radiant Valuations & Financials
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FAQ
We have answers
Radiant stock does not trade on public stock exchanges. Radiant stock is considered a private security and you need to be an accredited investor to trade shares. To invest in Radiant stock you can either buy shares directly through the company or work with a secondary trading marketplace like Nasdaq Private Market.
Learn more about the secondary market for private company shares on the investors page.
Radiant Stock does not trade on public stock exchanges. In order to sell Radiant shares you need to work directly with the company or with a secondary trading marketplace like Nasdaq Private Market. NPM has more than a decade of experience helping sell shares on the private market to our network of institutional investors.
Learn more about NPM services for selling privately held stock on the Employee Shareholders page.
Read more about how to sell private company stock on the private secondary market:
Nasdaq Private Market estimates that Radiant price per share was $43 as of May 11, 2026. This Radiant share value estimate (known as the NPM price) is based on market activity, publicly-sourced valuation data, and other proprietary information. With NPM Data and Intelligence premium for investors, you can get visibility into the Radiant share price today and the factors driving Radiant valuation estimates. Learn more about premium data here.
Read more about private company stock prices: Understanding the Bid-Ask Spread: How Buyers and Sellers Match on Price
There is no ticker symbol for Radiant stock because it is a private company. Private companies do not have ticker symbols like public companies, they are identified primarily by using the company ‘street’ name or legal name.
Nasdaq Private Market currently works with employees, ex-employees, and other company investors. In order to sell Radiant stock you need to receive the company’s approval, which Nasdaq Private Market manages on your behalf.
Learn more about selling privately held stock on the Employee Shareholders page.
Read more about how to sell shares of a private company and eligibility for selling privately held stock:
Currently, Nasdaq Private Market only works with accredited entities and institutional investors to purchase private company stock. In order to invest in Radiant stock, you need to be an accredited entity or institutional investor.
Learn more about the Nasdaq Private Market tool kit for investors on the Investor Trading page.
Once you buy or sell, stock share ownership must transfer before funds are wired. With Nasdaq Private Market, clients leverage our patent-pending Transfer and Settlement technology which streamlines and manages transfer activity from match to settlement.
To learn more about private company stock Transfer and Settlement, check out the Transfer and Settlement page.
Radiant is a private company and has not had an IPO. There is currently no Radiant IPO price. Get started to begin exploring the Nasdaq Private Market Data and Intelligence database and gain access to actionable data related to Radiant IPO.
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