Kyoto Fusioneering
PrivateLast Round
Series D
Aug 24, 2026
Est. Valuation
$542.5M
Total Funding Raised
$164.75M
Momentum
Top 1%
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, Advanced Materials
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 |
|---|---|---|
| Eos Atomics | 70% | |
| Ex-Fusion Inc. | 69% | |
| Marathon Fusion | 67% | |
Kyoto Fusioneering Funding Rounds
Historical fundraising activity
| Round | Date | Amount Raised | Valuation | Investors | Sources |
|---|---|---|---|---|---|
| Series D | Aug 24, 2026 | ||||
| Series C Extension | Sep 9, 2025 | ||||
| Debt | 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.
Kyoto Fusioneering 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 Kyoto Fusioneering's valuation, stock price, and market status.