Union Square Ventures, LLC is a private equity and venture capital firm established in 2003 and headquartered in New York. The firm specializes in early-stage, growth capital, and late-stage financing, primarily focusing on internet-related ventures, including web applications, internet services, and mobile technologies. Union Square Ventures seeks to invest in companies that leverage information technology in innovative ways across diverse sectors such as media, marketing, financial services, fintech, climate tech, blockchain, telecommunications, and healthcare. The firm targets investments in businesses capable of creating large networks of engaged users and those that demonstrate strong user experience and defensibility through network effects. Union Square Ventures typically makes initial investments ranging from $1 million to $3 million, with a maximum investment of up to $20 million per company. The firm prefers to take an active role in supporting entrepreneurs and aims for ownership stakes of 15% to 20%. Its investment strategy is geographically focused on companies located in major cities such as New York, San Francisco, London, and Berlin.
Radiant is a clean energy startup based in Los Angeles, California, that specializes in the development of portable nuclear microreactors. Founded in 2019, the company aims to provide an alternative to fossil fuels through its innovative microreactor technology. Designed to fit within a shipping container, these reactors can be easily transported by air, ship, or road, making them suitable for both military and commercial applications. The Kaleidos microreactor, in particular, is notable for offering a zero-emissions power source, ideal for remote locations and critical power needs.
Transmutex
Series A in 2024
Transmutex is a Swiss company founded in 2019 that specializes in advanced nuclear technology aimed at significantly reducing the stockpile of existing nuclear waste. The company utilizes particle accelerators to transmute long-lived nuclear waste, transforming it into less harmful materials while simultaneously generating carbon-free energy. This innovative approach offers a solution to the challenges faced by traditional nuclear power plants, allowing for scalable energy production that can either be reintegrated into the energy grid or utilized for green hydrogen production. The team at Transmutex comprises physicists, computer scientists, and environmentalists, and builds upon technologies previously tested at CERN and the Paul Scherrer Institute.
Radiant
Series A in 2022
Radiant is a clean energy startup based in Los Angeles, California, that specializes in the development of portable nuclear microreactors. Founded in 2019, the company aims to provide an alternative to fossil fuels through its innovative microreactor technology. Designed to fit within a shipping container, these reactors can be easily transported by air, ship, or road, making them suitable for both military and commercial applications. The Kaleidos microreactor, in particular, is notable for offering a zero-emissions power source, ideal for remote locations and critical power needs.
Transmutex
Series A in 2021
Transmutex is a Swiss company founded in 2019 that specializes in advanced nuclear technology aimed at significantly reducing the stockpile of existing nuclear waste. The company utilizes particle accelerators to transmute long-lived nuclear waste, transforming it into less harmful materials while simultaneously generating carbon-free energy. This innovative approach offers a solution to the challenges faced by traditional nuclear power plants, allowing for scalable energy production that can either be reintegrated into the energy grid or utilized for green hydrogen production. The team at Transmutex comprises physicists, computer scientists, and environmentalists, and builds upon technologies previously tested at CERN and the Paul Scherrer Institute.
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