Union Peak / Union Labs

Union Labs is an early-stage deep-tech venture capital firm founded in 2018 and headquartered in San Francisco. Operating alongside Union Peak as a shared venture platform, it invests at pre-seed and seed stage in founders working on difficult technical problems, with a current thematic focus on Physical AI - defined as systems that sense, reason and act.

The firm's stated mandate spans robotics, artificial intelligence, sensing, advanced manufacturing, energy, climate and infrastructure. Its investment approach pairs capital with operator-led go-to-market expertise, and is positioned to support companies through the transition from laboratory research to commercial launch - a stage at which technical risk is high and commercial infrastructure is typically absent.

Named portfolio companies on the firm's website include Urban Sky, which works in stratospheric remote sensing; Butlr, focused on indoor movement intelligence; Raise Robotics, building robots for infrastructure construction; Besxar, working on biopsy tissue assessment; and sensing and robotics companies SirenOpt and Ruby Robotics. The portfolio illustrates a spread across remote sensing, construction technology, healthcare devices and industrial robotics.

Additional industry areas referenced across the platform's activity include data privacy, construction finance, distributed energy and manufacturing software. Union Labs maintains its base in San Francisco.