6K
PrivateLast Round
Grant
Dec 15, 2025
Total Funding Raised
$355.87M
Momentum
Top 5%
of companies Caplight tracks
Company Overview
6K is a nanotechnology company that develops advanced microwave-based plasma technology to transform the production processes of nanomaterials and engineered powders for industries such as additive manufacturing and battery storage.
Sector
Frontier & Industrial Tech
Verticals
Advanced Materials, 3D Printing, Energy Storage, Defense Tech, Circular Economy
Business Model
B2B
Customer Profile
Hardware Sales, Government Contracts, Services & Consulting
AI Layer
Non-AI
Keywords
Historical Pricing
Historical view of private secondary pricing and transaction trends.
6K Comparables
Compare 6K with similar companies based on industry and business-model similarity.
| Company | Similarity | Market Cap |
|---|---|---|
| Tekna | 79% | |
| Continuum Powders | 78% | |
| Elementum 3D | 76% |
6K Funding Rounds
Historical fundraising activity
| Round | Date | Amount Raised | Valuation | Investors | Sources |
|---|---|---|---|---|---|
| Grant | Dec 15, 2025 | ||||
| Series E | Sep 5, 2024 | ||||
| Grant | Dec 8, 2023 | ||||
| Grant | Oct 19, 2022 | ||||
| Series D | Aug 10, 2022 | ||||
Series D | May 12, 2022 |
Key People
Founding team and executive leadership
6K Investors
Notable investors and investment history
| Investor | Rounds |
|---|---|
| HG Ventures | Series D |
| KLP Ventures | Series B |
| Volta Energy Technologies | Series E, Series C |
| Massachusetts Development Finance Agency | Series B, Debt |
| Stellantis Ventures | Series D |
| Material Impact | Series C, Series B Extension, Series B, Series E |
| U.S. Department of War | Grant |
Market signals
Structured signals derived from secondary market and firmographic data.
- Sep 1, 2026
Open roles increased to 281, 185% of headcount.
- Jul 20, 2026
Open roles increased to 281, 166% of current headcount.
6K 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 6K's valuation, stock price, and market status.
Is 6K a public or private company?
6K is a private company.
What is the current stock price of 6K?
6K is a private company, so its shares have no public market price. Caplight tracks 6K's secondary market activity and provides MarketPrice™ estimates of its share price to Caplight users.
How much is 6K worth (valuation)?
Valuation information for 6K is not publicly available.
Can I buy 6K stock?
6K shares may be available on secondary markets subject to transfer restrictions. Caplight facilitates secondary market transactions for accredited investors.
When was 6K's last funding round?
6K's most recent funding round was Grant on December 15, 2025.
Who are the main investors in 6K?
Key investors in 6K include Volta Energy Technologies, Massachusetts Development Finance Agency, U.S. Department of War, Anzu Partners, Defense Logistics Agency.
Will 6K IPO soon?
No public IPO plans have been announced for 6K.
How can I track 6K secondary market activity?
Caplight tracks bids, offers, and trades in 6K's shares on secondary markets.