Marissa Rosen

Marissa Rosen serves as the Executive Director of the Trio Foundation of St. Louis where she leads the organization’s mission to enhance the St. Louis community via the fulfillment of human potential and a focus on ecological impact. With a strong background in nonprofit management, philanthropy and development, Marissa brings strategic vision and operational expertise to drive meaningful change.

Prior to joining the Trio Foundation of St. Louis, Marissa served as the Director of Development at the National Council of Jewish Women St. Louis, where she created and implemented an annual giving program, executed a successful capital campaign and forged key relationships in the community. Her career spans 20 years of leadership in the nonprofit and philanthropic sectors, with a focus on development, relationship building, and community service.

A passionate advocate for family philanthropy, Marissa believes in the power of collaboration to create sustainable impact. She holds both a BA and an MSW from Washington University in St. Louis and has been recognized for her contributions to the Ladue School District, JFS St. Louis and the National Council of Jewish Women.

Outside of work, Marissa enjoys traveling, playing pickleball and mahjong. She resides in Olivette, MO with her husband Howard and their two crazy dogs. She and Howard are parents of two college students and love getting to visit them whenever they can. She is also proud to serve as a Director on the Ladue School District Board of Education.