Zephyr Fusion
PrivateLast Round
Seed
Dec 8, 2025
Est. Valuation
$1.79M
Total Funding Raised
$500,000
Company Overview
Zephyr Fusion is an aerospace and energy company developing a compact, megawatt-class fusion reactor designed for in-orbit power generation to support large-scale space industrialization.
Sector
Frontier & Industrial Tech
Verticals
Space Technology, Renewable Energy, Defense Tech
Business Model
B2B
Customer Profile
Hardware Sales, Government Contracts, Hardware + Subscription
AI Layer
Non-AI
Keywords
Historical Pricing
Historical view of private secondary pricing and transaction trends.
Zephyr Fusion Comps
Public and private peers based on sector, stage, and business model.
| Company | Status | Est. Valuation | Rev Multiple |
|---|---|---|---|
| OpenAI | Private | $86.0B | ~40x |
| Cohere | Private | $5.0B | -- |
| Competitor 1 | Public | $XX.XB | XXx |
| Competitor 2 | Public | $XX.XB | XXx |
Zephyr Fusion Funding Rounds
Historical fundraising activity
| Round | Date | Amount Raised | Valuation | Investors | Sources |
|---|---|---|---|---|---|
| Seed | Dec 8, 2025 |
Zephyr Fusion Investors
Notable investors and investment history
| Investor | Rounds |
|---|---|
| Pioneer Fund | Seed |
| Brimstone Hill Capital | Seed |
| Y Combinator | Seed |
| Syntax Ventures | Seed |
| Nova Threshold | Seed |
| Alumni Ventures | Seed |
| Spot VC | Seed |
Zephyr Fusion 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 Zephyr Fusion's valuation, stock price, and market status.