4401 Earth

4401 Earth (named after the molecular mass of CO2) provides an accelerated mineralization process for permanent carbon dioxide removal, eliminating CO2 by turning it into rock using the natural power of mineralization. The company combines deep geologic and materials science expertise to accelerate the natural reaction between carbon dioxide, water, and peridotite rocks to form stable carbonate minerals. The process is safe with no adverse environmental impact, fast with mineralization completed in under a year, permanent with CO2 locked away forever, scalable with trillions of tonnes of peridotite available globally, and affordable with limited ongoing costs. 4401 Earth serves the carbon removal market with solutions for corporate and government climate commitments. Founded in 2020 and headquartered in London, United Kingdom, the company has raised approximately $62.7 million in Series A funding from investors including Equinor, Shorooq Partners, Air Liquide, The Climate Pledge, and Climate Investment.