Arinna
PrivateLast Round
Seed
Mar 25, 2026
Total Funding Raised
$4.81M
Momentum Score
50 /100
Company Overview
Arinna is a developer of novel solar panel technology that is ultra-lightweight, flexible, and has a high power-per-weight ratio. The company's proprietary technology is based on ultrathin 2-D materials, also known as transition metal dichalcogenides (TMDs), and aims to achieve a significantly higher specific power than incumbent solar technologies at a competitive cost. The primary applications for these high-power-per-mass photovoltaic modules are in sectors where weight and form factor are critical, such as aerospace, satellites, electric vehicles, portable electronics, and IoT devices. Arinna is part of the Breakthrough Energy Fellows program and was launched from research conducted at Stanford University.
Sector
Frontier & Industrial Tech
Verticals
Space Technology, Renewable Energy, Advanced Materials
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.
Arinna Comps
Public and private peers based on sector, stage, and business model.
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.
- Apr 16, 2026
Grew 57% QoQ from 7 to 11 employees.
- Mar 25, 2026
Raised $4M in seed funding.
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.
