How much funding has Sepion Technologies raised?

Sepion Technologies has raised $27.4M in total funding, most recently a Series B round.

When was Sepion Technologies founded?

Sepion Technologies was founded in 2015.

Where is Sepion Technologies headquartered?

Sepion Technologies is headquartered in Alameda, California, United States.

What industry is Sepion Technologies in?

Sepion Technologies operates in Energy, Materials Science.

How many employees does Sepion Technologies have?

Sepion Technologies has 11-50 employees.

Sepion Technologies

Q: Who are Sepion Technologies's investors?

Sepion Technologies's investors include Fine Structure Ventures, Alumni Ventures, Boeing, U.S. Army.

Materials Solutions for the Electrify-Everything Revolution

Alameda, United States · Founded 2015 · $27.4M raised

Energy

Materials Science

Headquarters: Alameda, California
Employees: 11–50
Founded: 2015
Business Model: B2B

Website: sepiontechnologies.com
Total Funding: $27.4M
Last Round: $10.0M Series BApr 2026
Rounds: 4

About

Sepion Technologies is an Alameda, California-based advanced materials company founded in 2015, commercializing polymer research from Lawrence Berkeley National Lab. The company manufactures nanoporous battery separators using polymer of intrinsic microporosity (PIM) technology, enabling longer-lasting, faster-charging, safer lithium-metal batteries at significantly lower cost than ceramic alternatives. Sepion supplies polymer materials and coated separators to battery and EV manufacturers from its 25,000-square-foot pilot production facility.

Summary

Sepion Technologies is an Energy company based in Alameda, United States, founded in 2015. It has raised $27.4M in total across 4 rounds, most recently a $10.0M Series B round in Apr 2026. Investors include Fine Structure Ventures, Alumni Ventures and Boeing.