Tsubame BHB Co., Ltd.
PrivateLast Round
Series C
Feb 21, 2024
Total Funding Raised
$68.07M
Company Overview
Tsubame BHB Co., Ltd. operates in Energy & Sustainability and is based in Yokohama. Its latest recorded funding round was a Series C round in February 2024.
Tsubame BHB Co., Ltd. is a cleantech company that develops and commercializes small, distributed on-site ammonia production plants using an electride catalyst that operates at low temperatures and pressures.
Sector
Energy & Sustainability
Verticals
Clean Manufacturing, Renewable Energy, Advanced Materials, Supply Chain
Business Model
B2B
Customer Profile
Services & Consulting, Hardware Sales
AI Layer
Non-AI
Historical Pricing
Historical view of private secondary pricing and transaction trends.
Tsubame BHB Co., Ltd. Comparables
Compare Tsubame BHB Co., Ltd. with similar companies based on industry and business-model similarity.
| Company | Similarity | Market Cap |
|---|---|---|
| Atmonia | 81% | |
| Talus Renewables | 80% | |
| Jupiter Ionics | 79% |
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Tsubame BHB Co., Ltd. Funding Rounds
Historical fundraising activity
| Round | Date | Amount Raised | Valuation | Investors | Sources |
|---|---|---|---|---|---|
| Series C | Feb 21, 2024 | ||||
| Early Funding | Jul 25, 2022 | ||||
| VC Round | Jun 2, 2021 | ||||
| Convertible Debt | Oct 26, 2020 |
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Tsubame BHB Co., Ltd. Investors
Notable investors and investment history
| Investor | Rounds |
|---|---|
| Development Bank of Japan | Early Funding |
| MIRAISOZO INVESTMENTS Inc. | Early Funding |
| Sumitomo Mitsui Trust Bank | Early Funding |
| Ajinomoto Co., Inc. | Early Funding |
| Nippon Yusen Kabushiki Kaisha | Early Funding, VC Round |
| Mitsubishi UFJ Capital | Convertible Debt |
| Energy & Environment Investment, Inc. | Series C |
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Market signals
Structured signals derived from secondary market and firmographic data.
- May 8, 2025
Will participate in SusHi Tech Tokyo 2025 from May 8-10, 2025.
- Jan 21, 2025
Selected as a '2025 Global Cleantech 100' company.
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Recent news
Latest coverage and updates
- expands_facilitiesOct 28, 2026
Tsubame BHB Co. operates a commercial-scale ammonia production facility at Kashiwazaki Hydrogen Park in Japan and supplies Mitsubishi Gas Chemical from Oct 23rd '26.
- expands_facilitiesOct 27, 2026
Tsubame BHB Co. expands its physical facilities by launching its first commercial-scale ammonia production plant at Kashiwazaki Hydrogen Park in Japan on Oct 28th '26, transitioning from trial to commercial production.
- expands_facilitiesOct 13, 2026
Tsubame BHB Co. is in the process of establishing technology demonstration projects in Brazil, Laos, and Namibia.
- expands_facilitiesOct 13, 2026
Tsubame BHB Co. plans to construct a demonstration plant in India that produces 2,000 tons of ultra-high-purity ammonia annually to support domestic PV solar cell manufacturing.
- expands_facilitiesOct 13, 2026
Tsubame BHB Co. is establishing technology demonstration projects in Laos and other countries as part of its ammonia technology rollout.
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Tsubame BHB Co., Ltd. Filings
Explore SEC and related filing metadata, where available.
| Type | Date | Amount Offered | Amount Sold | Filing | Pages | Download |
|---|
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Frequently Asked Questions
Common questions about Tsubame BHB Co., Ltd.'s valuation, stock price, and market status.
Is Tsubame BHB Co., Ltd. a public or private company?
Tsubame BHB Co., Ltd. is a private company.
What is the current stock price of Tsubame BHB Co., Ltd.?
Tsubame BHB Co., Ltd. is a private company, so its shares have no public market price. Caplight tracks Tsubame BHB Co., Ltd.'s secondary market activity and provides MarketPrice™ estimates of its share price to Caplight users.
How much is Tsubame BHB Co., Ltd. worth (valuation)?
Valuation information for Tsubame BHB Co., Ltd. is not publicly available.
Can I buy Tsubame BHB Co., Ltd. stock?
Tsubame BHB Co., Ltd. shares may be available on secondary markets subject to transfer restrictions. Caplight facilitates secondary market transactions for accredited investors.
When was Tsubame BHB Co., Ltd.'s last funding round?
Tsubame BHB Co., Ltd.'s most recent funding round was Series C on February 21, 2024.
Who are the main investors in Tsubame BHB Co., Ltd.?
Key investors in Tsubame BHB Co., Ltd. include Energy & Environment Investment, Inc..
Will Tsubame BHB Co., Ltd. IPO soon?
No public IPO plans have been announced for Tsubame BHB Co., Ltd..
How can I track Tsubame BHB Co., Ltd. secondary market activity?
Caplight tracks bids, offers, and trades in Tsubame BHB Co., Ltd.'s shares on secondary markets.