Naturally occurring minerals - alongside forests, soils, and the ocean - are one of our planet's most vital carbon sinks. Over geological timescales, carbon dioxide in the air and water chemically bind to these minerals and permanently turn to stone. Our technology enhances this natural process, called carbon mineralization, to help minerals absorb CO2 from the ambient air in days, rather than years. By combining the best of engineering and nature, we can offer the most cost-effective and scalable Direct Air Capture solution in the world.
Location: United States, California, San Francisco
Employees: 11-50
Total raised: $203M
Founded date: 2020
Investors 15
| Date | Name | Website |
| 10.04.2021 | Yes VC | yes.vc |
| - | Lowercarbo... | lowercarbo... |
| 10.07.2022 | Incite Ven... | incite.org |
| 18.05.2022 | Plug and P... | plugandpla... |
| 25.03.2022 | Breyer Cap... | breyercapi... |
| - | MOL Switch | molswitch.... |
| - | Carbon Rem... | carbonremo... |
| - | Breakthrou... | breakthrou... |
| - | Quantum In... | qif.vc |
| - | GS Futures | gsfutures.... |
Show more
Funding Rounds 2
| Date | Series | Amount | Investors |
| 04.12.2024 | Series B | $150M | - |
| 17.03.2022 | Series A | $53M | - |
Mentions in press and media 16
| Date | Title | Description |
| 24.11.2025 | Frost & Sullivan Institute Celebrates Companies for Commitment to Solving Global Challenges | SANTA CLARA, Calif., Nov. 24, 2025 /PRNewswire/ -- The Frost & Sullivan Institute is pleased to present the 2025 Visionary Growth Leadership Best Practices Recognition winners, highlighting up-and-coming businesses whose main offerings ... |
| 06.12.2024 | Heirloom's $150 Million Leap: A Game Changer in Carbon Capture | In a world grappling with climate change, Heirloom has emerged as a beacon of hope. The Brisbane, California-based company recently secured $150 million in Series B funding, pushing its total investment to over $200 million since its incept... |
| 05.12.2024 | Heirloom: Direct Air Capture Company Raises $150 Million (Series B) | Heirloom, a leading Direct Air Capture (DAC) technology provider, announced it has raised $150 million in Series B funding. The funding round was co-led by Future Positive, and Lowercarbon Capital – which also invested in Heirloom’s Series ... |
| 04.12.2024 | Heirloom Raises $150 Million Series B to Rapidly Scale Commercial Direct Air Capture | - |
| 04.12.2024 | Heirloom Raises $150M in Series B Funding | Heirloom, a Brisbane, CA-based Direct Air Capture (DAC) technology provider, raised $150M in Series b funding. The round was led by Future Positive, and Lowercarbon Capital. New investors included Future Positive, H&M Group, Japan Airli... |
| 04.12.2024 | Heirloom Secures $150M Amid Busy Year For Carbon Capture Funding | 2 Shares Email Facebook Twitter LinkedIn Heirloom, a direct air capture company that uses modified limestone to pull CO₂ from the atmosphere, announced Wednesday that it has raised $150 million in Series B funding. The fundraise boosted tot... |
| 21.11.2024 | Faircraft Raises $15.8M in Funding | Faircraft, a Paris, France-based a provider of a lab-grown leather using patented tissue engineering techniques, $15.8M in funding. Backers included Kindred Ventures, Cap Horn, BPI, Sake Bosch, Entrepreneur First, Alliance for Impact, and H... |
| 10.11.2023 | The first US commercial plant has started to pull carbon from the air. It's able to suck out 1,000 tons annually and plans to expand. | Science The first US commercial plant has started to pull carbon from the air. It's able to suck out 1,000 tons annually and plans to expand. Maiya Focht 2023-11-09T21:42:26Z Share icon An curved arrow pointing right. Share Facebook Icon Th... |
| 14.04.2023 | Spotify, Klarna donate €4.5M to support Milkywire’s charitable fund to fight climate change | Stockholm-based Milkywire, an environmental impact platform, announced on Friday that its ‘beyond-offsetting’ charitable fund, Climate Transformation Fund, has been boosted by several of Nordic’s leading tech companies. Founded in 2018, Mil... |
| 14.04.2023 | Klarna and Spotify among Nordic tech companies contributing to environmental impact platform Milkywire | Stockholm-based environmental impact platform, Milkywire, says that nine Nordic tech companies, including Spotify, Klarna, Avanza, Northzone, Mentimeter and BioGaia have committed to donate to its Climate Transformation Fund. Milkywire's Cl... |
Show more