Meet the Team
Delivering Sustainability without Sacrifice
Our team has a proven passion for sustainable design solutions using the Earth’s materials to cleanse and heal our planet.
Headed by a clean-tech veteran & co-founded by a team of renowned scientists and engineers from the University of Colorado Boulder, we are inspired by processes in nature and how we can learn from them to generate clean and efficient results to support the build industry and therefore our planet.
Loren Burnett
President, CEO and Co-founder
Loren Burnett
President, CEO and Co-founder
Loren is a serial entrepreneur, founder of six tech companies, four of which were based on tech transfer agreements and founder of e-Chromic Technologies (an energy efficiency electrochromic window and film company based on technology from NREL). Loren has five exits generating $375M in shareholder gains, raised $190M in funding, led 17 M&A transactions and one IPO filing.
Stephen Bell, PhD
Director of Biotechnology
Stephen Bell, PhD
Director of Biotechnology
Stephen is a passionate, metric-driven scientist with interests and training that intersect biology and chemistry. He earned his PhD at the University of Kentucky where he studied natural product biosynthesis and synthetic biology approaches for producing valuable chemical compounds. Before joining the Prometheus Materials team, Stephen worked in the pharmaceutical and agricultural industries which provided him with diverse experiences and a wide range of skills.
Sherri Cook, PhD
Advisor and Co-founder
Jaclyn Gruber
Chief Marketing Officer
Jaclyn Gruber
Chief Marketing Officer
Jaclyn Gruber is the Chief Marketing Officer (CMO) at Prometheus driving the company’s branding and positioning toward wide-spread adoption and environmental impact. A seasoned marketing professional, Jaclyn is also the founder and CEO of Ivy, a creative studio & marketing agency known for creating conversion systems and bespoke customer experiences. Ivy’s partnership with Prometheus aims for global impact, accelerating the world’s future to carbon negative.
John Hottle, PhD
Director of Research & Development
John Hottle, PhD
Director of Research & Development
John is a leader in materials characterization, analytical research and product development. He earned his PhD at the University of Wisconsin-Madison in Physical Chemistry where he designed, built and deployed two new instruments to support climate change research initiatives. Additionally, John has led R&D teams within the polymer processing and manufacturing industry, established multiple government materials science analytical centers and served as a fundamental research program manager within the Department of Defense.
Mija Hubler, PhD
Engineering Advisor and Co-founder
Mija Hubler, PhD
Engineering Advisor and Co-founder
Civil Engineering, Co-Director of the Center for Infrastructure, Energy and Space Testing (CIEST) at CU; Mija is an expert on degradation and damage of construction materials due to aging and its impact on structural performance. She has 40+ published articles in the major mechanics and engineering journals and has authored an international recommendation for predicting concrete creep and shrinkage. Mija is a co-inventor of Prometheus Materials’ core technology.
Wil Srubar III, PhD
Technology Advisor and Co-founder
Wil Srubar III, PhD
Technology Advisor and Co-founder
Materials Science & Engineering Program and Architectural Engineering at CU; Wil is an expert in structural engineering and materials science of polymer- and cement-based materials for building and construction applications, with a specific emphasis on novel living cementitious material systems. He has published 100+ peer-reviewed technical journal articles, book chapters and conference proceedings and is the holder of two US Patents. Wil is a co-inventor of Prometheus Materials’ core technology.
Colin Tansey
Manager of Manufacturing and Operations
Colin Tansey
Manager of Manufacturing and Operations
Colin Tansey is a concrete industry leader with over 20 years of experience developing innovative concrete technologies. Specializing in integrating advanced methodologies into existing infrastructure, he has led high-performing teams focused on safety, efficiency, and sustainability. Colin has overseen the setup and commissioning of multiple manufacturing facilities and is named on several industry patents.
David Mesko
Sales Executive
David Mesko
Sales Executive
David is a seasoned sales professional with 25+ years in construction, specializing in concrete and commercial projects. He has contributed to major developments across the Denver Metro area and brings a strong background in ready-mix and precast, managing multimillion-dollar accounts. Known for navigating complex deals and building lasting client relationships, David drives revenue and closes high-value opportunities.
Sales Territories: Colorado, Wyoming
David Hermida
Sales Executive
David Hermida
Sales Executive
David is a sales executive with over 10 years of experience in bulk cement and construction materials. He has managed annual sales exceeding 400,000 tons and supplied major infrastructure projects, including the largest wind farm in the Western Hemisphere. Previously, he held logistics leadership roles across LTL and OTR trucking operations, developing deep expertise in supply chain coordination and delivery execution. Known for his strength in strategic negotiations and market analysis, David builds strong customer relationships and drives growth.
Sales Territories: Arizona, New Mexico, West Texas
The Prometheus Materials Mission
Be a leading provider of reduced carbon cement technology to the entire cement & concrete industry and accelerate the world's future to carbon negative.
Board of Directors
Loren Burnett
Loren Burnett
Loren is a serial entrepreneur, founder of six tech companies, four of which were based on tech transfer agreements and founder of e-Chromic Technologies (an energy efficiency electrochromic window and film company based on technology from NREL). Loren has five exits generating $375M in shareholder gains, raised $190M in funding, led 17 M&A transactions and one IPO filing.
Joško Bobanović
Joško Bobanović
Joško is a partner at Sofinnova Partners – a leading European venture capital firm – where he focuses on industrial biotech strategy. Joško sits on the boards of Metgen, Comet Bio, DNA Script, Biosyntia, DMC Biotechnologies, Pyrowave and Protera Biosciences. He is a mentor at BIRD Incubator, which helps entrepreneurs in software, data analytics, artificial intelligence and machine learning. Prior to joining Sofinnova Partners, he was part of the investment team at iNovia Capital and founded an internet startup and a software company.
Vishaan Chakrabarti, FAIA FRAIC
Vishaan Chakrabarti, FAIA FRAIC
With over thirty years of proven experience authoring and implementing visionary urban architecture, Vishaan Chakrabarti is the Founder and Creative Director of Practice for Architecture and Urbanism | PAU, where he leads the firm’s growing global portfolio of cultural, institutional and public projects. Chakrabarti is the author of the highly acclaimed book, A Country of Cities: A Manifesto for an Urban America (Metropolis Books, 2013), and the upcoming book for Princeton University Press entitled The Architecture of Urbanity: Designing for Place, Pluralism and Planet.
Answers to our most frequently asked questions
Where do you grow the algae?
We have strategic partners that are based in key growing climates to ensure efficiencies and effectiveness of the algae
Do you have EPDs?
Given the timeframe requirement for an EPD, we have a third-party LCA that demonstrates our GWP.
How is the performance of ProZERO™ compared to traditional concrete?
- We can achieve compressive strengths from flowable fill (150 PSI) up to 6000 PSI in both interior and exterior applications.
- As a result of our proprietary blended SCM formulation, we are able to maintain the same long-term performance expected from traditional cement and concrete
What’s the dosage of ProZERO™ needed for a typical mix?
Dosage is based on project goals and mix specifications. For ready-mix producers, this is typically set by targeted cement replacement levels (10–40%). We work with suppliers to determine the appropriate replacement percentage needed to meet targeted GWP and carbon reduction goals within your local market.
Who does the testing prior to a pour?
We recommend that you or your lab conduct testing using your own materials and placement practices. We provide mix guidance and technical support throughout the process.
What do our ready-mix suppliers need to do to integrate your product into our mixes?
ProZERO™ integrates similarly to other OPC replacements (slag, natural pozzolan, fly ash, limestone, etc.). Suppliers can use existing handling and batching practices. We work with suppliers to determine the best delivery method. ProZERO™ has been delivered to partners, job sites, and batch plants via bags, super sacks, and bulker trailers.
Shelf life?
Materials are stable under standard conditions. Store dry and protected from moisture.
Which sealer do we recommend?
We don’t have a specific sealer requirement. Water-and saline-based sealers that have been tested have performed similarly to normal OPC.
Which aggregate do we recommend?
We have not seen adverse interactions with typical aggregates. Your local aggregate of choice will work. If using special or novel aggregates, additional testing may be required.
Lightweight concrete over metal deck
We expect this application to be viable, though it has not yet been formally tested. A trial batch is recommended prior to deployment.
Shipping
Trailer or bulker. Shipping is at the cost of the buyer, FOB Longmont CO.
Short ton or metric ton
Short ton.