Isaac Sonnenfeldt
ASSOCIATE
Isaac joined MUUS in 2025, working across the investment, philanthropic, and operational arms of MUUS & Company. In addition to supporting the various MUUS teams on initiatives such as AI adoption, portfolio analysis, and philanthropic strategy, Isaac is also spearheading the effort to formalize MUUS’s governance and establish a multigenerational family office with deep commitments to climate and community.
Isaac holds a BA in sustainable development from Brown University, where he graduated with Magna Cum Laude and Phi Betta Kappa honors. Before joining MUUS, Isaac started his career working for a Netherlands-based boutique consulting firm focused on accelerating the adoption of sustainable transportation. He is particularly excited about how technology innovation, user experience interventions, and communications can influence individual behavior and help enable more sustainable ways of living.
Outside of the office, Isaac is dedicated to a wide range of tradition crafts including pottery, seasonal cooking, interior design, floral arrangement, and embroidery.