Anthony Clark

Emerging technologies investor

📍 United States🔄 Updated September 2026💼 3 investments📅 2 years investing🗓 Last invested Jul 2025
Angel investor🌍 United States
3
Total investments
0
Early stage
2
Mid stage
1
Late stage
2y
Years active

Portfolio

3 investments · sorted by recency
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Mid stage
Late stage
Investor
Jul 2025
Terra CO2, based in Golden, Colorado, has developed a scalable, low carbon alternative for cement replacement in concrete. Our engineered OPUS SCM is a direct replacement for fly ash. OPUS Zero is our future zero CO2 emissions inorganic polymer cement. OPUS Zero is currently in concrete trial phase. For every ton of Portland cement displaced by a Terra product, a 70% reduction in CO2 emissions is achieved. Introducing: OPUS Made with abundant, inexpensive, climate-friendly feedstocks. Today, cement production accounts for 8% of all greenhouse gas emissions worldwide. We replace up to 40% of cement in concrete with climate-friendly, cost-competitive supplementary and alternative cementitious materials. With appropriate mix design the concrete mix can be made cost competitive and with no compromise in performance properties. Our Opus products use abundantly available silicate rocks that can be sourced from existing aggregate mines close to any major market. This creates a huge advantage because it works at scale, using existing infrastructure.
Investor
Oct 2024
Mitigating the worst impacts of climate change by developing the world’s most cost-effective DAC technology to permanently remove CO2 from the atmosphere. Our technology rapidly accelerates the natural processes that enable limestone to absorb carbon dioxide from the air from a timespan of years to days. In 2023, Heirloom established the first and only Direct Air Capture facility in North America that permanently captures CO2. Our customers are the world’s biggest buyers of carbon removal including Microsoft, JP Morgan, McKinsey, Stripe, Shopify and more.
Investor
Jan 2024
CarbonCapture Inc. is a climate tech company that makes modular Direct Air Capture (DAC) machines that can be connected in large arrays to remove massive amounts of CO2 from the atmosphere.
Experience · 5 entries
All (5)
Investments (3)
2025
Investor
Jul 2025
Terra CO2, based in Golden, Colorado, has developed a scalable, low carbon alternative for cement replacement in concrete. Our engineered OPUS SCM is a direct replacement for fly ash. OPUS Zero is our future zero CO2 emissions inorganic polymer cement. OPUS Zero is currently in concrete trial phase. For every ton of Portland cement displaced by a Terra product, a 70% reduction in CO2 emissions is achieved. Introducing: OPUS Made with abundant, inexpensive, climate-friendly feedstocks. Today, cement production accounts for 8% of all greenhouse gas emissions worldwide. We replace up to 40% of cement in concrete with climate-friendly, cost-competitive supplementary and alternative cementitious materials. With appropriate mix design the concrete mix can be made cost competitive and with no compromise in performance properties. Our Opus products use abundantly available silicate rocks that can be sourced from existing aggregate mines close to any major market. This creates a huge advantage because it works at scale, using existing infrastructure.
2024
Investor
Oct 2024
Mitigating the worst impacts of climate change by developing the world’s most cost-effective DAC technology to permanently remove CO2 from the atmosphere. Our technology rapidly accelerates the natural processes that enable limestone to absorb carbon dioxide from the air from a timespan of years to days. In 2023, Heirloom established the first and only Direct Air Capture facility in North America that permanently captures CO2. Our customers are the world’s biggest buyers of carbon removal including Microsoft, JP Morgan, McKinsey, Stripe, Shopify and more.
Investor
Jan 2024
CarbonCapture Inc. is a climate tech company that makes modular Direct Air Capture (DAC) machines that can be connected in large arrays to remove massive amounts of CO2 from the atmosphere.
2023
VC Investment Lead | Negative Emissions Technologies | Siemens Financial Services
Apr 2023
Siemens AG (Berlin and Munich) is a leading technology company focused on industry, infrastructure, mobility, and healthcare. The company’s purpose is to create technology to transform the everyday, for everyone. By combining the real and the digital worlds, Siemens empowers customers to accelerate their digital and sustainability transformations, making factories more efficient, cities more livable, and transportation more sustainable. A leader in industrial AI, Siemens leverages its deep domain know-how to apply AI – including generative AI – to real-world applications, making AI accessible and impactful for customers across diverse industries. Siemens also owns a majority stake in the publicly listed company Siemens Healthineers, a leading global medical technology provider pioneering breakthroughs in healthcare. For everyone. Everywhere. Sustainably. In fiscal 2025, which ended on September 30, 2025, the Siemens Group generated revenue of €78.9 billion and net income of €10.4 billion. As of September 30, 2025, the company employed around 318,000 people worldwide on the basis of continuing operations.
2015
Associate Director | Commercial, Industrial & Institutional Programs
Aug 2015
The Connecticut Green Bank is the nation’s first state-level green bank. The Green Bank’s mission is to confront climate change by increasing and accelerating investment into Connecticut’s green economy to create more resilient, healthier, and equitable communities. Our vision is a planet protected by the love of humanity.
Investment activity
2024–2025 · 3 investments
2024220251
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