Company

Cocoon Carbon

Rocket Ship Rating

Rocket Ship Rating: 94 out of 100

Low-carbon construction materials for the builders of tomorrow

Also known as Cocoon, Cocooncarbon Ltd.

Carbon & climate software
Construction tech
Sustainable materials & circular economy
Climate positive
Deeptech
Hardware

Status: Operatingas of 2026-09-18
Business model: B2B
Headquarters: London, United Kingdom
Founded: 2023
Customers: Cement and Concrete producers
Legal name: Cocooncarbon Ltd.

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Record updated 28 September 2026

About

Cocoon transforms the by-product of electric steelmaking into LoopCem™, a scalable, low-carbon Supplementary Cementitious Material (SCM).

Funding snapshot

Total raised: $21.4MSum of rounds, as of 2026-09-18Source (opens in a new tab)
Latest round: Series A, $15M2026-01

Funding rounds

Series A: $15M2026-01, Company stated
Round, 2024: $5.4M2024-05-21, SEC form D sold, 7 investors
Pre seed: $5.4M2024-05, Company stated
Grant: $1M2024-05, Company stated

Products

Other: LoopCem™
Web: LoopCem™