Key facts
- It has raised $3.2M across 2 recorded rounds; the latest was Seed Round ($913K) in Jun 2025.
- Notable investors include VentureWell, Echo River Capital, Magnify, Natural Ventures (The Hague), Pacifica Water Solutions — 6 tracked in total.
- Active Membranes has filed 2 Form Ds with the SEC since 2024, most recently Jun 2025 ($913K sold to 5 investors).
- Status: Privately Held (backing).
- ·Post-money valuations for all 2 rounds
- ·The complete investor list — 6 names
- ·Watchlist + deal alerts for Active Membranes
Funding rounds
2 roundsAbout Active Membranes
Manufacturer of active desalination membranes designed to produce fresh water from saline or brackish water sources. The company's product utilizes a low-tunable electrical potential to actively prevent fouling and scaling on the membrane surface and reduces the need for extensive chemical and physical pre-treatment processes, enabling water treatment facilities to increase efficiency and reduce operational costs associated with the desalination process.
- Sector
- Business Products and Services (B2B)
- HQ
- Northridge, CA, United States
- Founded
- 2021
- Employees
- 10
- Website
- activemembrane.com/
- Ownership
- Privately Held (backing)
Active Membranes doesn't have a composite mark yet — a PA Mark is published once enough pricing inputs exist (trade prints, fund marks, round prices). The rest of the record below builds toward it.
Recorded secondary trades
No secondary trades in Active Membranes shares have been recorded yet. When a print lands — third-party, direct report, or platform — it appears here with structure, source, and price.
Institutional fund marks
No SEC-registered fund has reported a fair-value mark on Active Membranes in its N-PORT filings yet. We sweep new filings monthly.