Our People


An expert team of professionals with the experience,
relationships, and creativity to solve even the most challenging
problems for our clients.

Duncan Williams

Partner
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Duncan Williams is a Partner with GCA, based in San Francisco. Duncan has extensive advisory and capital markets experience in Sustainable Infrastructure and more broadly across the Technology and Industrials spaces, both in North America and Europe. He has twenty years of relationship-based investment banking experience, most recently for the last ten years at the intersect of Industrial and Technology, working both with large, established and emerging growth companies. Duncan is a registered representative of the Broker Dealer, Greentech Capital Advisors Securities, LLC.

Prior to GCA, Duncan was with Wedbush Securities as a Managing Director and Head of the Industrial Growth Technology practice which he led since 2006. He was previously at UBS Investment Bank in the Industrial and Technology sector practices, based in London and San Francisco.

He holds a Master of Arts in Modern History from Oxford University.

Other Team Members