Ernst Theodor Sack

Partner, Blue Bear Capital

📍 United States, United States🔄 Updated September 2026💼 19 investments📅 9 years investing🗓 Last invested Mar 2025𝕏 @upgrade_to_unlock
Angel investor🌍 United States
19
Total investments
8
Early stage
8
Mid stage
2
Late stage
9y
Years active

Portfolio

19 investments · sorted by recency
All investments
Early stage
Mid stage
Late stage
Board Observer, Investor
Mar 2025
AI/ML driven discovery for complex traits & faster, more economical breeding for climate resilient crops
mid stageBiotechnology
Board Observer, Investor
May 2024
Ocient is a data analytics software solutions company that enables compute-intensive analysis of large, complex datasets while optimizing for performance, cost, and energy efficiency. Ocient brings data transformation, loading, complex query processing, AI, OcientML® and OcientGeo® into a single, consolidated solution for deeper insights and data-driven decision-making. Enterprises can deploy Ocient’s pilot-to-production solutions on premises, in the OcientCloud™ or the public cloud, with little to no resource-intensive integration. Ocient is a global, remote-first, carbon-neutral company, headquartered in Chicago, and backed by leading investors including Greycroft, OCA Ventures, In-Q-Tel and Buoyant Ventures. If youre interested in joining a team making data more efficient at scale, email us at: recruiting@ocient.com
Board Observer, Investor
Jul 2021
Demex is a technology-enabled services company that enables insurance companies to mitigate the economic impacts of climate change. Growing losses from severe weather are making the business model for insurance companies unsustainable. Over the past decade, losses from such events as severe convective storms (SCS), hailstorms, derechos, winter storms, and drought have vastly outpaced damages from traditional catastrophes such as hurricanes, wildfires, and earthquakes. Demex is pioneering a vital transformation in severe weather reinsurance to enable insurers to survive these risks. Our product, Retained Climate Risk Reinsurance (RCR Re), is a groundbreaking reinsurance offering that enables insurance companies to transfer climate risk by modeling, structuring, and settling the accumulation of small- and medium-sized insurance claims that are caused by severe weather. This product is powered by cutting edge technology, sophisticated modeling techniques, and extensive weather risk datasets to perform predictive modeling and risk analysis at scale. Demex launched RCR Re in 2023 and had a breakout year, transacting over $60M in climate risk and building a strong coalition of marketplace partners. Demex’s reinsurance solution for secondary perils won the ‘Insurtech Product of the Year’ at the 2024 Insurance Insider Honors and ‘Innovation in Parametrics (Weather and NatCat - Private Sector) at the global Parametric Insurer Awards 2024.
early stageInsurance
Investor
Dec 2020
Urbint uses AI and the latest industry science to identify threats to workers and infrastructure to stop safety incidents before they happen. Urbint surfaces risk at the point of work, enabling energy and infrastructure companies to prevent worker injuries and asset damages. Many of the largest energy and infrastructure companies in North America trust Urbint to protect workers, assets, communities, and the environment. 🚨 Important Alert 🚨 It has come to our attention that individuals may have received false job offers from an email ending in @urbintcareers.com. Please be advised that this address is not affiliated with Urbint. At Urbint, safety is at the core of our mission—not only in the services we provide but also in how we communicate. If you recently applied to Urbint and received correspondence from this email, do not respond. Instead, please report the sender to your email provider. Our official communications will come directly from our @urbint.com email addresses. Stay vigilant, and thank you for your attention to this matter.
Board Observer, Investor
Oct 2020
First Resonance builds the ION Factory OS, the leading Factory OS powering leading manufacturers in aviation, energy, automative, and more. It's flexibility, first-class API, and data platform allow manufacturers to conduct the day-to-day operations in the factories and connect workflows to power modern operations from production to supply chain procurement and quality. Hardware companies of every size - from startups to large scale manufacturers - use ION to reliably track and manage parts, processes, and data through their product life cycle. Our customers are building complex products such as NASA’s lunar lander, next generation eVTOLs, in-space satellite propulsion, robotic farms, and more. We believe in empowering engineers, operators, and managers with the proper tools to push the boundaries of the physical world and build a brighter tomorrow.
Board Observer, Investor
Jun 2020
We are the world’s fastest-growing augmented reality company, transforming productivity for the Global 2000 workforce and the military. We deploy the industry’s most accessible and scalable AR solutions to enhance safety and oversight in industrial environments such as in the manufacturing of chemical explosives and maintenance of military equipment. Our award-winning AR headset is safety rated, compatible with PPE, and powered by smartphones, making us 10x more affordable and 10x faster to deploy. Our convenient Mira Connect software allows see-what-I-see video calls to enable remote subject-matter experts to effectively guide frontline workers in real-time, from anywhere, without having to travel. Our Mira Flow software allows our customers to gain unparalleled insight into operational data when utilizing our hands-free Augmented Reality headsets to guide engineers and technicians through complex workflows while providing managers with macro operational trends and insights. We are backed by the world’s top VCs, including Sequoia Capital, Founders Fund, Greylock Partners, Marc Benioff, and others. Our headquarters are based in Los Angeles, California.
Board Member, Investor
Apr 2020
Datch is a platform that leverages AI to capture highly detailed, structured human-centric data while surfacing asset insights for decision-making and resource management. Our goal is to cut deep into the availability shortfall by providing the data and intelligence needed to decrease asset MTTR, increase MTBF, support better planning and allow for faster decision making. In order to support the asset availability goals across resource management, reporting, planning, scheduling, and reliability, the product is designed around a single value proposition: ”perfect data”. By perfect data, we mean complete, highly accurate, context rich reports coming in from the frontline, and perfect recall and distillation of data to the right people at the right time. Data capture is achieved through a combination of worker enablement capabilities, such as speech-to-text, real-time translation, and conversational AI, and data enrichment, through features that add context and guidance to transform the data as it’s captured. Data accessibility and asset insights are tools that are underpinned by generative search trained on the company’s document management system, work management history, and other language-rich data sources related to assets.
Board Observer, Investor
Mar 2020
Site assessment platform for renewable energy developers Transects platform helps discover and assess high-quality sites in minutes. Its a game-changer for developers, offering real-time analysis for renewable energy, utilities, oil and gas, and infrastructure projects. With Transect, you can find and assess ideal sites in minutes, not weeks. Key features include swift site pinpointing, critical issues analysis, real-time data updates, versatility across industries, user-friendly interface, efficiency for cost savings, and proactive risk mitigation. Make informed, sustainable decisions with Transect, your partner in shaping a responsible future.
Investor
Nov 2019
Copper Labs unlocks real-time data from existing electric, gas, and water meters wirelessly and at a fraction of the expense and effort of traditional smart meter deployments. Using this information, Copper Labs helps utilities across North America support a data-driven transition to a low-carbon economy, increase resilience in the face of a changing climate, improve equity, manage demand, and deliver an exceptional customer experience
Board Observer, Investor
Jul 2019
Voyager Portal is a demurrage & operations platform that helps bulk charterers improve efficiency while reducing cost, risk, and complexity. With Voyager, maritime leaders and operators can collaboratively manage their shipping process in a unified environment, automating manual tasks while leveraging real-time insights to increase demurrage savings.
Board Member, Investor
Apr 2019
Raptor Maps is on a mission to make solar energy the smartest, most reliable, and most competitive source of electricity in the global economy. As the solar industry grows at an unprecedented pace, operational complexity and performance challenges are increasing, threatening to limit the financial and energy potential of solar assets. We solve these challenges by delivering the industry’s leading software for the modern solar owner. Raptor Maps orchestrates everything: we combine advanced analytics, machine learning, and automation to provide solar companies with the data, workflows, and tools they need to maximize energy yield, reduce operational costs, and improve worker safety. Our product suite includes: - Raptor Solar Platform: A powerful software solution that unifies data from SCADA systems, sensors, robotics, humans, and more into a precise digital twin of your solar assets, enabling streamlined collaboration and actionable insights. - Advanced Analytics: Pinpoint the root causes of underperformance with best-in-class machine-learning algorithms, helping teams identify issues like equipment defects, environmental challenges, and power losses. - Raptor Solar Sentry: An industry-first platform that integrates people and robotics to transform operations and maintenance workflows, driving double-digit financial gains for solar portfolios. Trusted by some of the world’s largest and most innovative solar owners, operators, and EPCs, Raptor Maps has digitized and optimized over 150 GW of solar capacity across 50+ countries. Founded by MIT engineers, Raptor Maps is dedicated to creating technology that empowers the industry to unlock its full potential. From small teams managing individual sites to global portfolios spanning continents, we’re helping solar companies drive results, reduce risk, and achieve their clean energy goals. Join us in revolutionizing solar operations. Learn more at www.raptormaps.com.
Board Observer, Investor
Dec 2018
Everactive helps developers of connected products easily design without the constraints of batteries by providing a hardware toolkit and managed network purpose-built for self-powered devices. That toolkit enables the most sustainable, scalable, and cost-effective Internet of Things solutions. The companys proprietary low-power energy harvesting and wireless technology enables completely batteryless and always-on IoT systems powered entirely from micro-renewable energy. By opening its groundbreaking technology, Everactive is enabling developers to build suites of innovative hyperscale IoT applications that continuously analyze an explosion of new data across a wide range of applications and throughout entire environments. Everactive’s self-powered IoT platform is built upon groundbreaking advances in ultra-low-power circuit design and wireless communication that allow the company to power its Eversensors exclusively from harvested energy. The company also offers a managed data network to seamlessly and reliably deliver developers self-sustaining data streams. Everactive has offices in Santa Clara, CA; Charlottesville, VA; and Ann Arbor, MI.
Board Member, Investor
Jun 2018
End-to-end digital supply chain & data analytics solutions for heavy industries Website: www.goexpedi.com Instagram, Twitter & Facebook: @goexpedi
Investor
Jan 2018
FreeWire is an industry leader in battery-integrated ultrafast electric vehicle (EV) charging and energy management solutions solving grid infrastructure constraints by designing and manufacturing scalable clean power, driving the global transition to electrified transportation. FreeWire is a trusted partner to Fortune 100 companies, commercial and utility customers, fleets, retail locations, and gas stations, supporting their entrance into the EV charging market and increasing the availability and reliability of EV charging. Join us in powering the electric revolution.
Board Observer, Investor
Dec 2017
Element powers digitally-enabled operations for the Industrial Enterprise. Tackling one of the most critical gaps in Industrial IoT –– the fact that 95% of data across the Industrial Enterprise is unusable because it’s fragmented and disconnected –– Element Unify breaks through the data silos by bringing IT and OT data and teams together for the first time on a single solution. With Element Unify, IT and OT teams can collaboratively make data-driven operational and business decisions around rich, contextualized metadata, while ensuring scale, reliability and security. Industrial Enterprises can see up to a 300% increase in time to insight, reduced organizational fragmentation, and a 100% increase in data usability with Element. Element's customers represent over $500 billion in revenue, $300 billion in fixed assets, and 350,000 employees. Element is headquartered in San Francisco, CA.
Show all 19 investments ↓
Experience · 21 entries
All (21)
Investments (19)
Board (15)
2025
Board Observer, Investor
Mar 2025
AI/ML driven discovery for complex traits & faster, more economical breeding for climate resilient crops
mid stageBiotechnology
2024
Board Observer, Investor
May 2024
Ocient is a data analytics software solutions company that enables compute-intensive analysis of large, complex datasets while optimizing for performance, cost, and energy efficiency. Ocient brings data transformation, loading, complex query processing, AI, OcientML® and OcientGeo® into a single, consolidated solution for deeper insights and data-driven decision-making. Enterprises can deploy Ocient’s pilot-to-production solutions on premises, in the OcientCloud™ or the public cloud, with little to no resource-intensive integration. Ocient is a global, remote-first, carbon-neutral company, headquartered in Chicago, and backed by leading investors including Greycroft, OCA Ventures, In-Q-Tel and Buoyant Ventures. If youre interested in joining a team making data more efficient at scale, email us at: recruiting@ocient.com
2021
Board Observer, Investor
Jul 2021
Demex is a technology-enabled services company that enables insurance companies to mitigate the economic impacts of climate change. Growing losses from severe weather are making the business model for insurance companies unsustainable. Over the past decade, losses from such events as severe convective storms (SCS), hailstorms, derechos, winter storms, and drought have vastly outpaced damages from traditional catastrophes such as hurricanes, wildfires, and earthquakes. Demex is pioneering a vital transformation in severe weather reinsurance to enable insurers to survive these risks. Our product, Retained Climate Risk Reinsurance (RCR Re), is a groundbreaking reinsurance offering that enables insurance companies to transfer climate risk by modeling, structuring, and settling the accumulation of small- and medium-sized insurance claims that are caused by severe weather. This product is powered by cutting edge technology, sophisticated modeling techniques, and extensive weather risk datasets to perform predictive modeling and risk analysis at scale. Demex launched RCR Re in 2023 and had a breakout year, transacting over $60M in climate risk and building a strong coalition of marketplace partners. Demex’s reinsurance solution for secondary perils won the ‘Insurtech Product of the Year’ at the 2024 Insurance Insider Honors and ‘Innovation in Parametrics (Weather and NatCat - Private Sector) at the global Parametric Insurer Awards 2024.
early stageInsurance
2020
Investor
Dec 2020
Urbint uses AI and the latest industry science to identify threats to workers and infrastructure to stop safety incidents before they happen. Urbint surfaces risk at the point of work, enabling energy and infrastructure companies to prevent worker injuries and asset damages. Many of the largest energy and infrastructure companies in North America trust Urbint to protect workers, assets, communities, and the environment. 🚨 Important Alert 🚨 It has come to our attention that individuals may have received false job offers from an email ending in @urbintcareers.com. Please be advised that this address is not affiliated with Urbint. At Urbint, safety is at the core of our mission—not only in the services we provide but also in how we communicate. If you recently applied to Urbint and received correspondence from this email, do not respond. Instead, please report the sender to your email provider. Our official communications will come directly from our @urbint.com email addresses. Stay vigilant, and thank you for your attention to this matter.
Board Observer, Investor
Oct 2020
First Resonance builds the ION Factory OS, the leading Factory OS powering leading manufacturers in aviation, energy, automative, and more. It's flexibility, first-class API, and data platform allow manufacturers to conduct the day-to-day operations in the factories and connect workflows to power modern operations from production to supply chain procurement and quality. Hardware companies of every size - from startups to large scale manufacturers - use ION to reliably track and manage parts, processes, and data through their product life cycle. Our customers are building complex products such as NASA’s lunar lander, next generation eVTOLs, in-space satellite propulsion, robotic farms, and more. We believe in empowering engineers, operators, and managers with the proper tools to push the boundaries of the physical world and build a brighter tomorrow.
Show all 21 entries ↓
Investment activity
2017–2025 · 19 investments
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