# Cocooncarbon

Startup profile on Capital Atlas: https://capitalatlas.ai/startups/cocooncarbon

- Industry: Materials
- Headquarters: London, UK
- Website: www.cocooncarbon.com/
- Total disclosed funding: $15M
- Latest round: Series A (Mar 18, 2026)
- Investors on record: 7

## About

Established in 2023 by Eliot Brooks, Freddie Scott, and William Knapp, and based in London, UK, Cocooncarbon Limited, doing business as Cocoon operates as a climate tech company that offers solutions to decarbonizing the steel and cement industries. In March 2026, Cocooncarbon Limited raised EUR 13 million in series A funding co-led by 2150 and Brick & Mortar Ventures, with participation from The Venture Collective, Wireframe Ventures, Celsius Industries, Gigascale Capital, and SOSV.

The firm offers a patent-pending process that captures CO2 (carbon dioxide) and upcycles industrial waste, such as steel slag, into a low-carbon cement alternative. The approach not only reduces CO2 emissions but also permanently stores carbon within the cementitious material. Cocoon’s solution aims to meet the growing global demand for construction materials while mitigating environmental impact.

The company will use the March 2026 funding to deploy its first commercial demonstration facility in the United States and establish the operating track record needed to support a broader rollout across steel plants.

## Funding rounds

- Series A, Mar 18, 2026, $15M — SOSV, Brick & Mortar Ventures, Wireframe Ventures, The Venture Collective, 2150, Gigascale Capital, Celsius Industries

## Investors

- SOSV (https://capitalatlas.ai/funds/sosv) — Series A
- Brick & Mortar Ventures (https://capitalatlas.ai/funds/brick-mortar-ventures) — Series A
- Wireframe Ventures (https://capitalatlas.ai/funds/wireframe-ventures) — Series A
- The Venture Collective (https://capitalatlas.ai/funds/the-venture-collective) — Series A
- 2150 (https://capitalatlas.ai/funds/2150) — Series A
- Gigascale Capital (https://capitalatlas.ai/funds/gigascale-capital) — Series A
- Celsius Industries (https://capitalatlas.ai/funds/celsius-industries) — Series A