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§ Private Profile · Bathgate, West Lothian, United Kingdom
Underwater IoT connectivity provider enabling real-time wireless data transmission through water, air, and subsea structures for ocean industries.
CSignum is a Bathgate, United Kingdom-based technology company that develops wireless communications solutions utilizing electromagnetic fields and HydroFi technology to enable real-time data transmission across water-air boundaries, water columns, seabeds, and subsea structures. The company provides underwater and underground Internet of Things connectivity to support the digitization of ocean industries, including offshore energy, aquaculture, and subsea operations. Operating with a team of 27 employees and generating under $5 million in revenue, the firm targets an underwater communications market projected to reach $10.2 billion by 2032. In April 2025, the enterprise secured $8.02 million in Series A funding backed by a syndicate of investors including Archangels, Par Equity, Scottish Enterprise, Raptor Group, and British Business Investments to finance hiring across the United Kingdom, United States, and European Union. CSignum was founded in 2020 by Jonathan Reeves.
CSignum has raised $8.1M across 1 funding round.
CSignum has raised $8.1M in total across 1 funding round.
CSignum has raised $8.1M across 1 funding round. Most recently, it raised $8.1M Series A in April 2025.
| Date | Round | Lead Investors | Other Investors | Status |
|---|---|---|---|---|
| Apr 22, 2025 | $8.1M Series A | PAR Equity | — | Announced |
CSignum has raised $8.1M in total across 1 funding round.
CSignum's investors include Par Equity.