Stefan Brunner – Startup Investor Profile

Stefan Brunner, an experienced Angel Investor, is focused on investing in startups in the software and consumer space, particularly those in the cyber security industry. He specializes in building disruptive security and networking solutions. Based in Austin, Texas, Stefan is an active member of the local startup community and serves as a mentor and accredited angel investor. With a track record in managing global-scale projects for private customers and defense clients, Stefan brings a wealth of expertise to his investments. His preferred business models include Software-as-a-Service, and he prioritizes startups that solve real problems. Stefan Brunner’s investment check sizes are not publicly available at this time.

Location:

Country: Switzerland

Investment Regions: EU, OC

Investment Stages: pre-seed, seed

Website: https://www.stefan-brunner.ch/

AI Reasoning: Searches across Stefan Brunner’s personal site, Crunchbase, LinkedIn mirrors, and startup ecosystem listings indicate his last documented investment activity is AIRICA in March 2021. No investments or portfolio entries with dates in 2023-2025 were found. From March 2021 to the reference date is more than 12 months, so classify accordingly. The startup found: AIRICA.

Low Activity – Only known angel investments more than 12 months ago.

Active – Known angel investments between the last 12 and 6 months.

Very Active – Known angel investments in the last 6 months.