Membrion
PrivateLast Round
Series B
Extension
Oct 7, 2025
Total Funding Raised
$62.57M
Momentum
Top 25%
of companies Caplight tracks
Company Overview
Membrion is an environmental services company that develops and manufactures ceramic desalination membrane technology designed for industrial wastewater treatment.
Sector
Frontier & Industrial Tech
Verticals
Water Treatment, Clean Manufacturing, Advanced Materials, Smart Manufacturing
Business Model
B2B
Customer Profile
Usage-Based SaaS, Services & Consulting
AI Layer
Non-AI
Keywords
Historical Pricing
Historical view of private secondary pricing and transaction trends.
Membrion Comparables
Compare Membrion with similar companies based on industry and business-model similarity.
| Company | Similarity | Market Cap |
|---|---|---|
| ZwitterCo | 81% | |
| Axine Water Technologies | 78% | |
| ElectraMet | 75% |
Membrion Funding Rounds
Historical fundraising activity
| Round | Date | Amount Raised | Valuation | Investors | Sources |
|---|---|---|---|---|---|
| Series B Extension | Oct 7, 2025 | ||||
| Series B Extension | Oct 7, 2024 | ||||
| Accelerator | Mar 12, 2024 | ||||
| Series B | Aug 8, 2023 | ||||
| Grant | Sep 8, 2022 | ||||
Grant | Sep 20, 2021 |
Membrion Investors
Notable investors and investment history
| Investor | Rounds |
|---|---|
| Sierra Angels | Seed |
| WRF Capital | Series A |
| E8 Angels | Seed |
| Indico Capital Partners | Series B, Series B Extension |
| E8 | Seed |
| Lam Capital | Series B |
| PureTerra Ventures | Series B, Series B Extension |
Market signals
Structured signals derived from secondary market and firmographic data.
- Aug 21, 2026
Monthly visitors increased 411% MoM, reaching 7K.
- Oct 7, 2025
$20M raised in Series B Extension round.
Recent news
Latest coverage and updates
- promotesAug 14, 2026
Membrion, Inc. promotes Emily Rabe to vice president of technology.
Membrion Filings
Explore SEC and related filing metadata, where available.
| Type | Date | Amount Offered | Amount Sold | Filing | Pages | Download |
|---|
Filing documents are not displayed on this public page. Request access to learn about available coverage.
Request accessFrequently Asked Questions
Common questions about Membrion's valuation, stock price, and market status.
Is Membrion a public or private company?
Membrion is a private company.
What is the current stock price of Membrion?
Membrion is a private company with no public stock price. No recent secondary market data is available.
How much is Membrion worth (valuation)?
Valuation information for Membrion is not publicly available.
Can I buy Membrion stock?
Membrion shares may be available on secondary markets subject to transfer restrictions. Caplight facilitates secondary market transactions for accredited investors. Visit https://www.caplight.com to learn more.
When was Membrion's last funding round?
Membrion's most recent funding round was Series B Extension on October 7, 2025.
Who are the main investors in Membrion?
Key investors in Membrion include Lam Capital, PureTerra Ventures, Samsung Venture Investment, Bellingham Angel Investors, Pangaea Ventures.
Will Membrion IPO soon?
No public IPO plans have been announced for Membrion.
How can I track Membrion secondary market activity?
Caplight tracks bids, offers, and trades for private companies. Visit https://www.caplight.com to monitor Membrion's secondary market activity and sign up for updates.