Seattle, WA · Founded 2016 · Privately Held (backing)
Developer of ion exchange membrane technology designed for industrial wastewater. Membrion is based in Seattle, WA and was founded in 2016. Its last reported valuation was $27.5 million in Aug 2023. It has raised $46.3 million across 6 recorded rounds; the latest was a $20 million early-stage round in Jun 2025.
Last reported valuation
$27.5M
Oct 2026
Priced at
—
Total raised
$46.3M
Last round
Early Stage VC
Jun 2025
Team — not yet on record
No current team members for Membrion are on record yet. People surface from round filings, company disclosures, and coverage sessions.
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·The complete investor list: 39 names
·Watch Membrion: the Monday email on marks, rounds and moves
