Duncan Stewart is an accomplished executive and business development leader specializing in strategic growth, partnership development, and integrated marketing operations. As a Partner at Collaborative, she brings deep experience helping mission-driven organizations expand their reach and strengthen their impact through thoughtful, results-oriented strategies.

Duncan’s expertise centers on aligning organizational priorities with external stakeholders to strengthen reach, deepen engagement, and support long-term impact. With a background in direct response marketing, she has led engagements with organizations including Save the Children, Americares, and No Kid Hungry.

Duncan holds a bachelor’s degree in Journalism and Political Science from Miami University of Ohio.