Arinna
PrivateLast Round
Seed
Mar 25, 2026
Total Funding Raised
$4.81M
Momentum
Top 25%
of companies Caplight tracks
Company Overview
Arinna is a renewable energy and aerospace technology company that develops ultra-lightweight, flexible, and high-specific-power solar panel technology based on transition metal dichalcogenides (TMDs).
Sector
Energy & Sustainability
Verticals
Energy Management, Smart Grid, Energy Storage
Business Model
B2B
Customer Profile
Hardware Sales
AI Layer
Non-AI
Keywords
Historical Pricing
Historical view of private secondary pricing and transaction trends.
Arinna Comparables
Compare Arinna with similar companies based on industry and business-model similarity.
| Company | Similarity | Market Cap |
|---|---|---|
| Virtus Solis Technologies | 61% | |
| Swift Solar | 54% | |
| Space Solar | 53% | |
Arinna Funding Rounds
Historical fundraising activity
| Round | Date | Amount Raised | Valuation | Investors | Sources |
|---|---|---|---|---|---|
| Seed | Mar 25, 2026 | ||||
| Seed | Jun 1, 2025 | ||||
| Grant | Sep 17, 2024 |
Key People
Founding team and executive leadership
Arinna Investors
Notable investors and investment history
| Investor | Rounds |
|---|---|
| Castle Fund | Seed |
| Anorak Ventures | Seed |
| Stanford University | Seed |
| Breakthrough Energy Foundation | Seed, Grant |
| Spacecadet Ventures | Seed |
| Hanover | Seed |
| rpv | Seed |
Market signals
Structured signals derived from secondary market and firmographic data.
- May 16, 2026
Grew 71% QoQ from 7 to 12 employees.
- Apr 16, 2026
Grew 57% QoQ from 7 to 11 employees.
Arinna 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 Arinna's valuation, stock price, and market status.