Thaddeus Squire

Thaddeus Squire, Chief Commons Steward at Social Impact Commons, has more than 25 years of experience in the nonprofit management field, focusing on arts and cultural heritage. A serial nonprofit entrepreneur, he founded Peregrine Arts in 2004, a multi-arts producer, followed by Hidden City Philadelphia, among other curatorial projects. In 2010 he shifted his practice to focus on shared nonprofit infrastructure, founding CultureWorks Greater Philadelphia in 2010, the first comprehensive fiscal sponsor focusing on arts and heritage in the country, which grew to steward more than 120 independent organizations under his leadership. Following CultureWorks, in 2020, he co-founded Social Impact Commons, the first nonprofit supporting organization and field builder for the national fiscal sponsorship community. Thaddeus’s creative practice is focused on systems design for nonprofit resource sharing, in particular practices based in commoning and commons management principles and other Solidarity Economy models. In his free time, he cultivates interests in horticulture and garden design, history of philanthropy and the nonprofit sector, political economy, nonprofit management, and cultural stewardship, which he explores through his Substack, The Undersector and through frequent speaking engagements. Thaddeus holds degrees from Princeton University, the University of Leipzig (J. William Fulbright Fellowship), and the Mendelssohn Conservatory of Music & Theatre.