6K
PrivateLast Round
Grant
Dec 15, 2025
Total Funding Raised
$355.87M
Momentum
Top 1%
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, Clean Manufacturing
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
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 6K's valuation, stock price, and market status.