Rock Flour Company Raises €6.1M Seed round

News 08. September 2025 Growth & Entrepreneurship Innovative Technologies

Photo: GRF is formed by the motion of the vast Greenland ice sheet, grinding down bedrock under the pressure from 3km of ice into micron-sized particles. Summer meltwater flushes GRF out of the glacial system, and into accessible shoreline deposits. Illustration: Melanie Linnemann Djernæs

The Rock Flour Company, a pioneering deep-tech venture unlocking the potential of Greenlandic Rock Flour (GRF) for large-scale carbon removal and regenerative agriculture, today announced the successful closing of its seed funding round. The round, totalling €6.1M, was led by EIFO (the Export and Investment Fund of Denmark) alongside Novo Holdings. Other notable new investors are Greenlandic Nalik Ventures and SISA, and Carbon Drawdown Initiative. Existing investors, such as 2degrees, The Footprint Fund, and Planetary Impact Ventures, along with strategic angels, are also participating in the funding round.

The funding reflects the strategic importance of GRF as a global carbon removal solution, and a strong institutional confidence in Rock Flour Company’s mission to leverage Greenland’s abundant glacial rock flour resources to deliver both climate impact and agricultural benefits at global scale.

This investment allows us to fast-track Greenland operations and deliver scalable proof-of-concept with global relevance.

Eliot Booth, COO, Rock Flour Company

Enabling Commercial Pilots and Technology Development

This investment will enable Rock Flour Company to commence commercial deployment of its first GRF project in Greenland, initiate long-term commercial pilots, advance large-scale permitting, building essential partnerships across the value chain, and accelerating R&D and processing innovations.

“We are thrilled to have the support of leading institutional investors from both Greenland - where we operate - and Denmark, where we will first deploy” said Eliot Booth, COO of Rock Flour Company. “This investment allows us to fast-track Greenland operations and deliver scalable proof-of-concept with global relevance.”

“Backing the development of an innovative solution that not only addresses global climate challenges but also has the potential to fundamentally strengthen Greenland’s economy is what we’re set out to do. The Arctic can be a source of source of optimism in the global transition, and this project proves just that.” — Peter Christiansen, Interim CEO of Nalik Ventures.

Greenlandic Rock Flour is right below the feet. From the right it is Co-Founder and Professor of Geology Minik Thorleif Rosing, Samuel Backlund, Business Developer, Eliot Booth, COO og advisor, former Premier of Greenland, Kuupik Kleist.

Glacial Rock Flour has the potential to capture and store carbon from the air at a gigaton scale and unlock farmers’ access to a more sustainable crop nutrient source. Aligning with EIFO’s mandate to accelerate the green transition, Rock Flour Company is driving local development and solving key sustainability issues within the global agriculture industry. Combined with a world-class founder team, we’re pleased to have taken a seat at the table in this latest funding round.

Erik Balck Sørensen, Chief Investment Officer at EIFO

Transforming Croplands into Carbon Sinks

Glacial rock flour, a naturally occurring ultra-fine powder formed by glacial erosion, offers dual benefits. As a soil amendment, it provides a natural source of nutrients and improves nitrogen-use efficiency, reducing fertiliser demand and environmental impacts. Simultaneously, its unique mineral composition and fine particle size drive accelerated CO₂ removal through enhanced weathering.

With billions of tonnes of deposits readily available in Greenland, GRF has the potential to transform global croplands into a large-scale, permanent carbon sink - turning agriculture into a key driver of climate mitigation.

“Glacial Rock Flour has the potential to capture and store carbon from the air at a gigaton scale and unlock farmers’ access to a more sustainable crop nutrient source. Aligning with EIFO’s mandate to accelerate the green transition, Rock Flour Company is driving local development and solving key sustainability issues within the global agriculture industry. Combined with a world-class founder team, we’re pleased to have taken a seat at the table in this latest funding round. We look forward to continuing to support the company as they commercialize and scale,” said Erik Balck Sørensen, Chief Investment Officer at EIFO.

“The Rock Flour Company stems from research that the Novo Nordisk Foundation has supported for a number of years. We now see this knowledge translated into a company with positive results from field trials, strong partnerships and increasing international interest. With our investment, we want to support the company's ability to scale its solution and thereby contribute to a more sustainable development of agriculture – in Denmark, Greenland and globally.” – Anders Spohr, Managing Partner, Planetary Health Investments, Novo Holdings.

About Rock Flour Company

Rock Flour Company was founded in 2023 by world-renowned geologist Professor Minik Rosing and climate investor 2degrees, led by serial entrepreneur Mikkel Bülow-Lehnsby, and develops solutions for sustainable agriculture and permanent carbon removal using Greenlandic glacial rock flour.

By extracting and processing natural deposits in Greenland, the company provides global farmers with a soil amendment that provides natural crop nutrients, enhances nitrogen use efficiency, and removes atmospheric CO₂ - creating scalable agricultural and climate benefits.

What is GRF and how is it made?

GRF is 100% natural, non-toxic, ultra-fine rock powder, packed full of essential minerals and nutrients to support healthy soils and plant growth. In fact, it’s the same natural starting material behind the world’s most fertile agricultural soils in existence today.

Beyond acting as a source of Potassium (K), Phosphorus (P) and other key micronutrients, GRF also rapidly captures up to 25% of its weight in CO2, making it deeply carbon-negative. Other co-benefits include soil pH regulation and improved soil structure.

GRF is formed by the motion of the vast Greenland ice sheet, grinding down bedrock under the pressure from 3km of ice into micron-sized particles. Summer meltwater flushes GRF out of the glacial system, and into accessible shoreline deposits.

Over a billion tons is deposited across Greenland, every year. When taken to soils in warmer climates, the GRF rapidly weathers - a process that releases the nutrients and enables the carbon capture.

See more at: www.rockflour.co

About the investors

Novo Holdings is a holding and investment company that is responsible for managing the assets and the wealth of the Novo Nordisk Foundation, one of the world’s largest philanthropic enterprise foundations. Novo Holdings is the controlling shareholder of Novo Nordisk A/S and Novonesis A/S, and manages an investment portfolio with a long-term return perspective.

Nalik Ventures is a Greenlandic venture capital fund dedicated to fostering entrepreneurship and innovation in Greenland. With a focus on supporting scalable businesses that create both local value and global impact, Nalik Ventures invests in early-stage companies across key sectors, including natural resources, sustainability, and digital transformation.

SISA is Greenland’s pension fund, managing retirement savings for employees across the country. As one of Greenland’s largest institutional investors, SISA is committed to responsible, long-term investments that contribute to sustainable economic growth and improved livelihoods in Greenland.

Carbon Drawdown Initiative GmbH is a Germany-based impact investor and thought-leader dedicated to accelerating the development and scaling of effective carbon dioxide removal (CDR) pathways, particularly through enhanced rock weathering. By combining scientific research, policy advocacy, and impact investing, CDI supports pioneering field trials and early-stage ventures to kick-start a robust global CDR industry.

2degrees is a climate-focused investment firm founded by serial entrepreneur Mikkel Bülow-Lehnsby, backing companies developing breakthrough solutions to address planetary health. With a focus on scalable, innovative solutions, 2degrees supports visionaries building the foundations of a sustainable global economy.