Membrion Funding: $43M Raised, Series B (2025)

Membrion funding overview

Membrion is based in Seattle. Membrion has raised $43M in total disclosed funding. That places its disclosed total in the $25M–$100M range. Its most recent disclosed round is a Series B announced in October 2025. The round record for Membrion runs through 2025; nothing later has been disclosed. Investors on record include Pangaea Ventures, PureTerra Ventures, Ecolab Inc., W. L. Gore & Associates, Samsung Venture Investment Corporation, Lam Capital and 5 others. 11 distinct backers are named across the disclosed rounds.

Membrion at a glance

Total raised: $43M
Latest round: Series B
Latest round date: October 2025
Headquarters: Seattle
Notable investors: Pangaea Ventures, PureTerra Ventures, Ecolab Inc., W. L. Gore & Associates, Samsung Venture Investment Corporation, Lam Capital, Safar Partners, Lam Research

Frequently asked about Membrion funding

How much has Membrion raised?: Membrion has raised $43M in total disclosed funding across the rounds on record.
Who has invested in Membrion?: Pangaea Ventures, PureTerra Ventures, Ecolab Inc., W. L. Gore & Associates, Samsung Venture Investment Corporation, Lam Capital are named among the investors backing Membrion.
What was the latest Membrion funding round?: The most recent disclosed round is a Series B, announced in October 2025.
Where is Membrion based?: Membrion is based in Seattle.
When did Membrion last raise?: The last disclosed Membrion round closed in October 2025 at Series B.

We update the Membrion record whenever a new round is filed or announced, so the totals above track the public record rather than estimates. Related companies in Seattle and their backers are listed below.

Membrion Funding: $43M Raised, Series B (2025)

Membrion funding overview

Membrion at a glance

Frequently asked about Membrion funding

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