Sepion
PrivateLast Round
Series B
Apr 17, 2026
Total Funding Raised
$59M
Momentum
Top 10%
of companies Caplight tracks
Company Overview
Sepion Technologies is a materials science company that develops and commercializes advanced polymer membrane separators for lithium-ion and lithium-metal batteries.
Sector
Energy & Sustainability
Verticals
Energy Storage, Advanced Materials, Electric Vehicles
Business Model
B2B
Customer Profile
Hardware Sales, Services & Consulting
AI Layer
Non-AI
Keywords
Historical Pricing
Historical view of private secondary pricing and transaction trends.
Sepion 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 |
Sepion Funding Rounds
Historical fundraising activity
| Round | Date | Amount Raised | Valuation | Investors | Sources |
|---|---|---|---|---|---|
| Series B | Apr 17, 2026 | ||||
| Grant | Oct 3, 2024 | ||||
| Series B | Mar 26, 2024 | ||||
| Series A | Nov 18, 2021 | ||||
| Seed | Jan 1, 2019 | ||||
Grant | Feb 29, 2016 |
Sepion Investors
Notable investors and investment history
| Investor | Rounds |
|---|---|
| Fine Structure Ventures | Series A, Series B |
| Dolby Family Ventures | Series A |
| BlueYard Capital | Seed |
| Cantos Ventures | Seed |
| Creative Ventures | Series A, Seed |
| Calm Ventures | Series A |
| Gaingels | Series A |
Market signals
Structured signals derived from secondary market and firmographic data.
- Apr 17, 2026
$10M round led by Fine Structure Ventures.
- Oct 3, 2024
$18M grant received from California Energy Commission and CALSTART.
Sepion 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 Sepion's valuation, stock price, and market status.