Kyoto Fusioneering
PrivateLast Round
Series D
Aug 24, 2026
Est. Valuation
$542.5M
Total Funding Raised
$164.75M
Momentum
Top 5%
of companies Caplight tracks
Company Overview
Kyoto Fusioneering is an alternative energy equipment company that develops advanced technologies, including gyrotron systems, tritium fuel cycle solutions, and breeding blankets, for commercial fusion power plants.
Sector
Energy & Sustainability
Verticals
Renewable Energy, Clean Manufacturing
Business Model
B2B
Customer Profile
Hardware Sales, Services & Consulting, Government Contracts
AI Layer
Non-AI
Keywords
Historical Pricing
Historical view of private secondary pricing and transaction trends.
Kyoto Fusioneering Comparables
Compare Kyoto Fusioneering with similar companies based on industry and business-model similarity.
| Company | Similarity | Market Cap |
|---|---|---|
| Canon Inc. | 73% | |
| Cocchi Technologies | 70% | |
| Thales Group | 69% |
Kyoto Fusioneering Funding Rounds
Historical fundraising activity
| Round | Date | Amount Raised | Valuation | Investors | Sources |
|---|---|---|---|---|---|
| Series D | Aug 24, 2026 | ||||
| Debt | Sep 9, 2025 | ||||
| Series C Extension | Sep 9, 2025 | ||||
| Series C Extension | Jul 23, 2024 | ||||
| Series C Extension | Apr 11, 2024 | ||||
Series C | May 17, 2023 |
Kyoto Fusioneering Investors
Notable investors and investment history
| Investor | Rounds |
|---|---|
| JAFCO Group Co., Ltd. | Series C Extension, Series B, Series C |
| Development Bank of Japan | Series D, Series B, Series C |
| Coral Capital | Series C Extension, Seed, Series B, Series C |
| Fujikura Ltd. | Series C Extension |
| Mitsubishi UFJ Financial Group | Debt |
| K4 Ventures | Series C Extension, Series C |
| 京都キャピタルパートナーズ | Series C Extension |
Market signals
Structured signals derived from secondary market and firmographic data.
- Aug 24, 2026
$105M round with participation from DBJ Capital and MUFG Bank.
- Jan 1, 2026
Secured National Institute for Fusion Science as a customer.
Recent news
Latest coverage and updates
- is_developingOct 8, 2026
Kyoto Fusioneering Ltd. begins developing commercial manufacturing technology for low-activation vanadium alloy with Daido Steel on Oct 8th '26
- partners_withOct 7, 2026
Kyoto Fusioneering Ltd. partners with Daido Steel Co. to establish commercial manufacturing technology for low-activation vanadium alloy on Oct 7th '26
- is_developingSep 29, 2026
Kyoto Fusioneering Ltd. is developing high-power, continuous-operation gyrotrons and power supplies for superhot geothermal applications on Jul 1st '24.
- invests_into_assetsSep 1, 2026
Kyoto Fusioneering Ltd. invested into assets: demonstration facilities on Sep 1st '26.
- expands_facilitiesAug 12, 2026
Kyoto Fusioneering Ltd. expanded facilities to Tennessee, United States, Northern America, Americas on Aug 12th '26.
Kyoto Fusioneering 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 Kyoto Fusioneering's valuation, stock price, and market status.
Is Kyoto Fusioneering a public or private company?
Kyoto Fusioneering is a private company.
What is the current stock price of Kyoto Fusioneering?
Kyoto Fusioneering is a private company, so its shares have no public market price. Caplight tracks Kyoto Fusioneering's secondary market activity and provides MarketPrice™ estimates of its share price to Caplight users.
How much is Kyoto Fusioneering worth (valuation)?
Kyoto Fusioneering's valuation is estimated at $542.5M based on funding round data.
Can I buy Kyoto Fusioneering stock?
Kyoto Fusioneering shares may be available on secondary markets subject to transfer restrictions. Caplight facilitates secondary market transactions for accredited investors.
When was Kyoto Fusioneering's last funding round?
Kyoto Fusioneering's most recent funding round was Series D on August 24, 2026.
Who are the main investors in Kyoto Fusioneering?
Key investors in Kyoto Fusioneering include Japan Investment Corporation, Global Brain Corporation, JIC Venture Growth Investments, JIC Investment, In-Q-Tel.
Will Kyoto Fusioneering IPO soon?
No public IPO plans have been announced for Kyoto Fusioneering.
How can I track Kyoto Fusioneering secondary market activity?
Caplight tracks bids, offers, and trades in Kyoto Fusioneering's shares on secondary markets.