Brian Birk is a Co-Founder and Managing Partner of Sun Mountain Capital. See contact routes.
Brian Birk is a Co-Founder and Managing Partner of Sun Mountain Capital, where he sits on all investment committees and serves as a board member for portfolio companies including Aspen Avionics and Exagen Inc. He actively invests throughout the Rocky Mountain and Southwest regions, reflecting the firm’s geographic focus on these areas. While specific investment stages, sectors, and typical check sizes are not publicly detailed in available sources, his board roles indicate involvement in aviation technology, biotechnology, and sustainable materials. Notable portfolio companies under his oversight include Aspen Avionics (where he serves as Chair), Exagen Inc (Chair; NASDAQ: XGN), Green Theme Technologies, and the previously acquired Lumidigm. Birk is a current member and former Chairman of the Board of the Rocky Mountain Venture Capital Association, highlighting his leadership in regional venture ecosystems. No distinctive public writing or unique investment philosophy is documented in the provided search results, limiting insight into his personal point of view.
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