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Sepion
Silicon Valley, US · Founded 2015 · Delaware corporation · 24 employees on LinkedIn · 15 known investors
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Sepion develops advanced polymer separator technology for batteries and other applications including water separation and materials recovery. The company commercializes research from Berkeley Lab with manufacturing and production capabilities in Silicon Valley.
Founders & leadership
Sepion was founded in 2015 by Peter Frischmann and Brett Helms.
Board
Investors · 15
How we know: natlawreview.com · Not right? Tell us
How we know: av.vc · Not right? Tell us
How we know: Creative Ventures's portfolio page · the VCSheet dataset · open dataset · 5k.vc investor directory · Not right? Tell us
How we know: Dolby Family Ventures's portfolio page · the VCSheet dataset · open dataset · 5k.vc investor directory · Not right? Tell us
How we know: Fine Structures Ventures's portfolio page · Not right? Tell us
How we know: Foothill Ventures's portfolio page · Not right? Tell us
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How we know: ISV's portfolio page · the VCSheet dataset · Not right? Tell us
How we know: natlawreview.com · the VCSheet dataset · Not right? Tell us
How we know: natlawreview.com · open dataset · 5k.vc investor directory · Not right? Tell us
Also in the syndicate · 4
Funding
SEC filings, press & company announcements$38.7M disclosed across 3 rounds · 2021–2026
- $10MSeries BApr 2026Source ↗
- $10MSeries BMar 2026 · 2 sources
Fine Structure Ventures (lead), ACVC Partners, Catalus Capital, Chailease, Impact Science Ventures, Syensqo Ventures, Volo Earth Ventures, W. L. Gore & Associates
Source ↗
▶$18.7MraisedNov 2021 · 22 investors · OtherRule 506(b)
- Peter FrischmannExecutive Officer, Director
- Brett A. HelmsExecutive Officer, Director
- Randy ChanDirector
- Offering amount
- $18.7M
- Amount sold
- $18.7M
- First sale
- Oct 2021
- Incorporated
- Corporation, Delaware
- Federal exemptions
- 06b
Source: SEC EDGAR Form D. Amounts as filed; amended filings shown once at their latest values.
Related companies · 6
Companies working in the same space as Sepion.
Non-dilutive funding · 2 SBIR/STTR awards
Federal grants — no equity taken| Agency | Phase | Year | Amount |
|---|---|---|---|
| Department of Energy | Phase IISTTR | 2017 | $1M |
| Department of Energy | Phase ISTTR | 2016 | $150K |
Source: SBIR.gov award data (U.S. Small Business Administration). SBIR/STTR awards are competitive federal R&D grants and contracts — non-dilutive capital alongside any venture rounds above.
In the news
Frequently asked questions
- What does Sepion do?
- Sepion develops advanced polymer separator technology for batteries and other applications including water separation and materials recovery. The company commercializes research from Berkeley Lab with manufacturing and production capabilities in Silicon Valley.
- Who founded Sepion?
- Sepion was founded by Peter Frischmann, Brett Helms in 2015.
- Who are Sepion's investors?
- Sepion's investors include ACVC Partners, Alumni Ventures, Creative Ventures, Dolby Family Ventures, Fine Structures Ventures, Foothill Ventures, Gaingels, ISV and 3 more.
- How much funding has Sepion raised?
- Sepion has disclosed $38.7M raised across 3 rounds.
- Where is Sepion headquartered?
- Sepion is headquartered in Silicon Valley, US.