Matthew Claxton

Sustainability Investor, Partner, Global Head Of Sustainability

📍 San Francisco Bay Area, United States🔄 Updated September 2026💼 8 investments📅 7 years investing🗓 Last invested Sep 2023
VC🌍 United States
8
Total investments
2
Early stage
4
Mid stage
0
Late stage
7y
Years active

Portfolio

8 investments · sorted by recency
All investments
Early stage
Mid stage
Late stage
Investor
Sep 2023
Vaulted is an emerging leader in permanent carbon removal. A biomass carbon removal and storage (BiCRs) solution, Vaulted delivers permanent, high quality carbon removal at scale through the geologic sequestration of carbon-filled organic waste. Vaulted’s approach is designed to be the lowest-cost, gigaton scale, permanent carbon removal. We sequester sludgy organic wastes (biosolids, manure, agricultural, food waste, paper sludge, etc.) that today are sent to a landfill, dumped into an ocean/river, land applied, or otherwise left to decompose, releasing GHGs into the atmosphere. Vaulted leverages a suite of patented, mature, geologic slurry sequestration technologies which allow us to sequester organic waste with minimal processing. We inject deep under the earth’s surface, where the carbon is permanently trapped under a layer of impermeable rock - the same formations that have kept hydrocarbons underground for millions of years. We have two permitted, operational, facilities allowing us to reach near-term meaningful scale. Our carbon removal approach goes beyond vaulting carbon. It inherently improves local environmental and human health. In doing so, our operations redress historically unjust waste management practices and advance environmental justice. Vaulted is backed by leading carbon removal and climate investors, including Lowercarbon Capital, Earthshot Ventures, and WovenEarth Ventures.
Investor
Nov 2021
We turn carbon emissions into natural carbon-negative textiles. Rubi is building a future where human prosperity and economic growth are planet-positive. We're unlocking CO2 as a natural resource for making critical materials, cost competitively, with our cell-free enzyme flow biocatalysis platform. We're producing carbon-negative textiles for the fashion industry as our first application. We make the same textiles apparel brands already use today, for half the cost of cotton at scale, and completely carbon-negative and water- and land-neutral. Our company is built on high-quality science, a focus on impact, honesty & transparency, and a sense of purpose in everything we do. We're backed by leading investors including Talis Capital, Plug and Play, Incite.org, Necessary Ventures, and Climactic VC.
Investor
Aug 2021
rePurpose Global is the world’s leading Plastic Action Platform, bringing together brands, consumers, innovators, and policymakers to collectively combat the plastic waste crisis. Through its pioneering solutions across the circular economy, rePurpose has helped more than 500 companies measure, reduce, and take action on their plastic footprints, while driving systems change on a global scale. rePurpose Impact Projects have recovered over 30 million kilograms of plastic waste from the environment to date, protecting vulnerable coastal regions across the Americas, Africa, and Asia. In doing so, the organization has enabled the delivery of waste management services to millions of people for the first time, while positively impacting the lives of thousands of marginalized waste workers across the world. Founded in 2016, rePurpose Global now employs over 70 full-time team members across offices worldwide. For more information, please visit https://repurpose.global/. If youd like to work with us, head on over to our Careers Page to look at the open positions and browse through their job descriptions: https://www.business.repurpose.global/careers
Investor
Feb 2021
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
Nov 2020
Epoch’s biorecycling platform unlocks circularity for the toughest-to-recycle materials. Our AI-designed enzymes enable infinite recycling for mixed plastics and textiles at low temperatures. We produce sustainable outputs for use in apparel, automotive, packaging and more.
Board Observer
Jul 2019
Our vision is for a future in which the essential services that support our societies - water, energy, food - are affordable, safe, and accessible for everyone, everywhere. By leveraging AI to continuously learn from ever-changing patterns, we empower people with actionable knowledge for effective decision-making. While the digital revolution is creating the world of today, Emagin is building the architecture of the future, using the latest advances in artificial intelligence to repurpose information to sustainably manage humanity’s impact on the world. Emagin is now part of Innovyze, the global leader in water infrastructure data analytics with design, modeling, asset management and operational analytics software. We are accelerating widespread adoption of AI to transform the water industry at global enterprise scale. The idea was simple - use collected data to predict and optimize utility operations. As the team grew, so too did the idea and scope. Today Emagin’s technology uses cutting edge proprietary artificial intelligence for water utilities, food & beverage, paper, oil and gas facilities globally. Within the first two years, Emagin broke new ground through a framework agreement with the UK’s United Utilities and secured the largest deployment of AI technology in the region and first of its kind in the industry. In emerging markets, Emagin has been working with utilities to support technological leapfrogging, and has successfully deployed AI in non-digitized utilities. In established markets, Emagin has supported progressing facilities beyond digitization by implementing AI to fully optimize operations and save on expenditure. After winning a series of awards locally, Emagin was recognized in the international water sector by BlueTech and Global Water Intelligence. We look forward to continuing to build the future of smart cities, beyond digitization, and provide actionable intelligence to decision-makers.
Board Observer
May 2019
KETOS is a vertically integrated water intelligence platform with intelligent hardware, bi-directional connectivity infrastructure, interactive software, and hassle-free services, all for a predictable, flat service fee. Were transforming how water operators measure, manage, and forecast water quality and efficiency in industrial, agricultural, and municipal applications. KETOS combines hardware, software, connectivity, automated reporting, predictive analytics, and maintenance to automate water monitoring and testing as a fully integrated platform. Our goal is to provide water operators with the visibility to identify and solve mission-critical water efficiency and water quality challenges (in real-time or before they happen). Equipped with up-to-the-minute data and predictive algorithms, operators can now ensure their water meets specific quality and safety standards. KETOS can monitor water for 30+ parameters, including: - Environmental factors (Total Dissolved Solids, Temperature, Conductivity, Salinity, pH, Oxidation Reduction Potential [ORP], Dissolved Oxygen) - Inorganics (Alkalinity, Dissolved Boron, Dissolved Silica, Free Chlorine, Residual Chlorine, Total Hardness) - Heavy metals (Chromium, Copper, Iron, Lead, Manganese, Zinc, Selenium, Mercury, Arsenic, Cadmium, Calcium) - Nutrients (Orthophosphates, Nitrates)
Investor
Mar 2019
Checkerspot is a biotechnology company designs materials and ingredients at a molecular level to enable more sustainable and high-performing products. By optimizing microalgae, Checkerspot’s vertically integrated WING™ Platform biomanufactures unique oils that are designed to not only replace commodity oils and petroleum-based inputs, but also improve performance properties in targeted hardgoods, textiles, and personal care products. Checkerspot continues to develop new biotech innovations and expand the reach of its commercialized next-generation polyurethanes and algae-derived materials to improve the performance and sustainability of consumer products.
Experience · 10 entries
All (10)
Investments (8)
Founder (1)
Board (2)
2023
Investor
Sep 2023
Vaulted is an emerging leader in permanent carbon removal. A biomass carbon removal and storage (BiCRs) solution, Vaulted delivers permanent, high quality carbon removal at scale through the geologic sequestration of carbon-filled organic waste. Vaulted’s approach is designed to be the lowest-cost, gigaton scale, permanent carbon removal. We sequester sludgy organic wastes (biosolids, manure, agricultural, food waste, paper sludge, etc.) that today are sent to a landfill, dumped into an ocean/river, land applied, or otherwise left to decompose, releasing GHGs into the atmosphere. Vaulted leverages a suite of patented, mature, geologic slurry sequestration technologies which allow us to sequester organic waste with minimal processing. We inject deep under the earth’s surface, where the carbon is permanently trapped under a layer of impermeable rock - the same formations that have kept hydrocarbons underground for millions of years. We have two permitted, operational, facilities allowing us to reach near-term meaningful scale. Our carbon removal approach goes beyond vaulting carbon. It inherently improves local environmental and human health. In doing so, our operations redress historically unjust waste management practices and advance environmental justice. Vaulted is backed by leading carbon removal and climate investors, including Lowercarbon Capital, Earthshot Ventures, and WovenEarth Ventures.
Partner
Jan 2023
Plug and Play is a global innovation platform founded in Silicon Valley in 2006. We connect the people and organizations that drive technology forward, and turn those connections into real business outcomes. We run accelerator programs, facilitate corporate-startup pilots, invest in early-stage companies, and help governments and institutions build innovation ecosystems. Our network includes corporations, startups, investors, universities, and mentors across more than 20 industries and 60 locations worldwide. Since inception, weve accelerated thousands of startups and invested in over 2,500 companies. Our portfolio includes PayPal, Dropbox, LendingClub, Honey, and N26. Industries we work in: Advanced Manufacturing · Aerospace & Defense · Agtech · Animal Health · Brand & Retail · Crypto & Digital Assets · Deeptech · Energy · Enterprise & AI · Fintech · Food & Beverage · Health · Insurtech · Lifetech · Maritime · Media & Advertising · Medtech · Mobility & Physical AI · New Materials & Packaging · Real Estate & Construction · Semiconductors · Smart Cities · Sportstech · Supply Chain · Sustainability · Travel & Hospitality Where we operate: Americas: Silicon Valley · New York · Los Angeles · Washington D.C. · Detroit · Seattle · São Paulo · Alberta Europe: London · Munich · Stuttgart · Paris · Amsterdam · Barcelona · Madrid · Milan · Turin · Gothenburg · Vienna · Istanbul · Antwerp · Vilnius · Tirana · Yerevan · Tbilisi · Limassol · Tashkent Middle East & Africa: Riyadh · Abu Dhabi · Cairo Asia-Pacific: Tokyo · Osaka · Kyoto · Singapore · Seoul · Shanghai · Beijing · Shenzhen · Jakarta · Kuala Lumpur · Phnom Penh · GIFT City
2021
Investor
Nov 2021
We turn carbon emissions into natural carbon-negative textiles. Rubi is building a future where human prosperity and economic growth are planet-positive. We're unlocking CO2 as a natural resource for making critical materials, cost competitively, with our cell-free enzyme flow biocatalysis platform. We're producing carbon-negative textiles for the fashion industry as our first application. We make the same textiles apparel brands already use today, for half the cost of cotton at scale, and completely carbon-negative and water- and land-neutral. Our company is built on high-quality science, a focus on impact, honesty & transparency, and a sense of purpose in everything we do. We're backed by leading investors including Talis Capital, Plug and Play, Incite.org, Necessary Ventures, and Climactic VC.
Investor
Aug 2021
rePurpose Global is the world’s leading Plastic Action Platform, bringing together brands, consumers, innovators, and policymakers to collectively combat the plastic waste crisis. Through its pioneering solutions across the circular economy, rePurpose has helped more than 500 companies measure, reduce, and take action on their plastic footprints, while driving systems change on a global scale. rePurpose Impact Projects have recovered over 30 million kilograms of plastic waste from the environment to date, protecting vulnerable coastal regions across the Americas, Africa, and Asia. In doing so, the organization has enabled the delivery of waste management services to millions of people for the first time, while positively impacting the lives of thousands of marginalized waste workers across the world. Founded in 2016, rePurpose Global now employs over 70 full-time team members across offices worldwide. For more information, please visit https://repurpose.global/. If youd like to work with us, head on over to our Careers Page to look at the open positions and browse through their job descriptions: https://www.business.repurpose.global/careers
Investor
Feb 2021
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.
Show all 10 entries ↓
Investment activity
2019–2023 · 8 investments
20193202012021320231
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