Union Labs

Union Labs (also known as Union Labs Ventures or UNION Labs) is a San Mateo, California-based deep tech venture capital firm founded in 2018 by Nate Williams and Chris Kim, focused on pre-seed and seed-stage investments in founders applying advanced technologies like AI, robotics, IoT, and autonomous systems to solve complex real-world problems in areas such as climate tech, manufacturing, healthcare, cybersecurity, and industrial automation. The firm, which originated as an incubation at Kleiner Perkins with support from Google Ventures, takes a hands-on approach by co-creating companies, providing operational expertise, and writing initial checks typically between $500,000 and $2.5 million, often as the first institutional investor. With around 30-40 portfolio companies as of 2025, notable investments include Butlr (ambient AI sensors), Foundation EGI (AI for manufacturing), Urban Sky (stratospheric imaging), Raise Robotics, and Ruby Robotics, alongside several acquisitions and a emphasis on diverse founders building scalable, disruptive hard tech solutions.