OOKUMA DIAMOND DEVICE Co., Ltd.
PrivateLast Round
Early Funding
Oct 17, 2024
Total Funding Raised
$29.99M
Momentum
Top 10%
of companies Caplight tracks
Company Overview
OOKUMA DIAMOND DEVICE Co., Ltd. is a semiconductor company that develops and manufactures diamond semiconductor devices designed for high radiation and high-temperature environments, targeting applications in satellite communications, 5G base stations, and nuclear decommissioning.
Sector
Frontier & Industrial Tech
Verticals
Semiconductors, Advanced Materials, Defense Tech, Satellite Communications, 5G Infrastructure
Business Model
B2B
Customer Profile
Hardware Sales, Government Contracts
AI Layer
Non-AI
Keywords
Historical Pricing
Historical view of private secondary pricing and transaction trends.
OOKUMA DIAMOND DEVICE Co., Ltd. Comparables
Compare OOKUMA DIAMOND DEVICE Co., Ltd. with similar companies based on industry and business-model similarity.
| Company | Similarity | Market Cap |
|---|---|---|
| Power Diamond Systems | 80% | |
| Diamfab | 78% | |
| VISION IV Corporation | 77% |
OOKUMA DIAMOND DEVICE Co., Ltd. Funding Rounds
Historical fundraising activity
| Round | Date | Amount Raised | Valuation | Investors | Sources |
|---|---|---|---|---|---|
| Early Funding | Oct 17, 2024 | ||||
| Debt | Feb 15, 2024 | ||||
| Seed | May 24, 2023 |
OOKUMA DIAMOND DEVICE Co., Ltd. Investors
Notable investors and investment history
| Investor | Rounds |
|---|---|
| GLOBIS Capital Partners | Seed, Early Funding |
| SBI Shinsei Corporate Investment | Early Funding |
| Coral Capital | Early Funding, Seed |
| aSTART Co., Ltd. | Early Funding |
| Joyo Bank, Ltd. | Early Funding |
| 株式会社FFGベンチャービジネスパートナーズ | Early Funding |
| Shinsei Corporate Investment | Early Funding |
Market signals
Structured signals derived from secondary market and firmographic data.
- Jul 24, 2026
Monthly visitors increased 58% MoM.
- Jun 8, 2026
Selected for multiple national projects by Japanese government agencies.
Recent news
Latest coverage and updates
- is_developingJun 17, 2026
OOKUMA DIAMOND DEVICE Co., Ltd is developing diamond semiconductor RF devices generation on Jun 17th '26.
OOKUMA DIAMOND DEVICE Co., Ltd. Filings
Explore SEC and related filing metadata, where available.
| Type | Date | Amount Offered | Amount Sold | Filing | Pages | Download |
|---|
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Request accessFrequently Asked Questions
Common questions about OOKUMA DIAMOND DEVICE Co., Ltd.'s valuation, stock price, and market status.
Is OOKUMA DIAMOND DEVICE Co., Ltd. a public or private company?
OOKUMA DIAMOND DEVICE Co., Ltd. is a private company.
What is the current stock price of OOKUMA DIAMOND DEVICE Co., Ltd.?
OOKUMA DIAMOND DEVICE Co., Ltd. is a private company with no public stock price. No recent secondary market data is available.
How much is OOKUMA DIAMOND DEVICE Co., Ltd. worth (valuation)?
Valuation information for OOKUMA DIAMOND DEVICE Co., Ltd. is not publicly available.
Can I buy OOKUMA DIAMOND DEVICE Co., Ltd. stock?
OOKUMA DIAMOND DEVICE Co., Ltd. shares may be available on secondary markets subject to transfer restrictions. Caplight facilitates secondary market transactions for accredited investors. Visit https://www.caplight.com to learn more.
When was OOKUMA DIAMOND DEVICE Co., Ltd.'s last funding round?
OOKUMA DIAMOND DEVICE Co., Ltd.'s most recent funding round was Early Funding on October 17, 2024.
Who are the main investors in OOKUMA DIAMOND DEVICE Co., Ltd.?
Key investors in OOKUMA DIAMOND DEVICE Co., Ltd. include GLOBIS Capital Partners, Coral Capital.
Will OOKUMA DIAMOND DEVICE Co., Ltd. IPO soon?
No public IPO plans have been announced for OOKUMA DIAMOND DEVICE Co., Ltd..
How can I track OOKUMA DIAMOND DEVICE Co., Ltd. secondary market activity?
Caplight tracks bids, offers, and trades for private companies. Visit https://www.caplight.com to monitor OOKUMA DIAMOND DEVICE Co., Ltd.'s secondary market activity and sign up for updates.