What is Brimstone?
Low-carbon cement and critical minerals from abundant calcium-silicate rock.
- Category
- Low-carbon cement and minerals
- Headquarters
- Oakland, CA
- Founded
- 2019
- Employees
- Private; growth-stage industrial team
- Total funding
- About $60M disclosed venture funding plus $189M DOE award announced in 2024
- Valuation
- Not disclosed
What is Brimstone?
Brimstone develops a process to make ordinary Portland cement and co-produce critical minerals from abundant rock while avoiding conventional limestone process emissions.
Brimstone targets heavy industry by producing cement, steel, aluminum, magnesium, titanium, and other minerals from a single feedstock. Revenue and ARR are not publicly disclosed; customer count is not publicly disclosed. Its public positioning is industrial decarbonization platform for cement and critical minerals.
As of June 2026, Brimstone is best read as a venture-backed industrial materials company moving from pilot to federally supported scale-up. The most important operating signals are $55M Series A, investors including Breakthrough Energy Ventures and DCVC, a $189M DOE award announced in 2024, and ordinary Portland cement certification visibility. Brimstone remains private company, so exact margins, revenue mix, and customer contract values are not publicly reported unless stated by the company.
What does Brimstone offer?
Brimstone offers low-carbon ordinary Portland cement technology, critical-mineral co-products, and industrial plant development.
- Ordinary Portland cement· Cement
- Critical minerals· Co-products
- Calcium-silicate process· Core technology
- Industrial plant development· Infrastructure
- Low-carbon materials partnerships· Commercial
How does Brimstone make money?
Brimstone will monetize through cement and mineral sales, plant partnerships, offtakes, and potentially licensing or joint-venture structures.
No public list pricing; commercial pricing is quoted by deployment, customer scale, geography, and service scope. Pricing is not public; economics depend on feedstock, plant capex, energy, co-product value, cement standards, and offtake contracts.
Growth depends on plant scale-up, DOE support, co-product economics, cement certification, industrial customers, and construction-sector low-carbon procurement. For sellers, the most relevant budget owners are cement producers, building-materials companies, industrial project developers, government programs, critical-minerals buyers, and construction procurement teams; procurement maturity should be treated as startup or growth-stage, with technical founders and operators close to vendor decisions.
Who leads Brimstone?
Brimstone is led by Cody Finke, Co-founder and Chief Executive Officer; Hugo Leandri, Co-founder.
- Cody FinkeCo-founder and Chief Executive OfficerCo-founder since 2019Activate fellow and public CEO leading Brimstone's industrial scale-up.
- Hugo LeandriCo-founderCo-founder since 2019Public co-founder tied to the process technology.
How do you contact Brimstone's leadership?
Brimstone publishes official company contact routes, but reviewed public sources do not verify personal executive email addresses. Use the company route below or a verified LinkedIn/workflow enrichment step before sending individual outreach.
Official routes at brimstone.com; personal executive pattern not verifiedHow much funding has Brimstone raised?
About $60M disclosed venture funding plus $189M DOE award announced in 2024; latest disclosed financing: $55M Series A in March 2022. Not disclosed
Apr 2020: Early funding, undisclosed early rounds, led by early climate investors, valuation not disclosed; Mar 2022: Series A, $55M, led by Breakthrough Energy Ventures and DCVC-linked syndicate, valuation not disclosed; Mar 2024: DOE Industrial Demonstrations award, $189M, led by U.S. Department of Energy, non-dilutive award announced.
The company has not publicly disclosed every valuation or all small non-dilutive awards, so totals should be read as disclosed funding rather than a fully audited capitalization table. The latest financing signal matters because it funds pilot plant, team growth, process scale-up, and commercial demonstration.
How did Brimstone get here?
Brimstone's path is defined by founding, technical validation, financing, and commercialization milestones.
- 2019FoundedBrimstone is founded in Oakland.
- Mar 2022$55M Series ABrimstone raises Series A to build pilot plant and team.
- 2023OPC certification visibilityBrimstone highlights ordinary Portland cement compatibility.
- Mar 2024$189M DOE awardDOE industrial demonstrations award announced for Brimstone project.
- 2025Federal funding uncertaintyPublic reporting notes DOE funding program changes affecting cement startups.
Who are Brimstone's competitors?
Brimstone competes with companies in undefined.
Brimstone — frequently asked questions
