Development Principles Group

Development Principles Group

Wayne B. Silby established Development Principles Group in 2013, roughly three decades after he co-founded the Calvert Group, one of the earliest mutual fund families to place social and environmental screens at the center of public-equity investing. Silby’s wealth stemmed from Calvert’s growth into a multi-billion-dollar fund complex before its acquisition by Eaton Vance; DPG represents his post-Calvert vehicle for allocating capital to mission-aligned ventures. The firm operates from New York and maintains a deliberately low profile, consistent with Silby’s long-standing preference for advancing the impact-investing field itself over personal brand-building. DPG’s investment strategy spans early-stage equity, with a concentration in financial services technology, enterprise software, and healthcare services. Transaction structures include direct minority stakes and occasional co-investments alongside established impact funds. The firm has backed companies developing tools for financial inclusion, such as digital banking platforms serving underbanked populations, and health-tech startups targeting preventative care delivery models. Silby’s approach carries over the Calvert-era thesis: governance and product intent can be priced into a company’s long-term risk adjusted return. The geographic focus is primarily the United States, though Silby has previously supported impact initiatives in Southeast Asia through separate vehicles. Silby runs DPG as an agile investment office without a large institutional team (per SEC filings). The firm does not market third-party fund products and is not structured to accept outside limited partners. A notable feature of Silby’s architecture is his parallel engagement with The Impact Finance Center and his teaching at institutions such as American University, which creates an unusual pipeline of vetted social enterprises. In 2023, Silby continued to speak publicly on the evolution of impact measurement standards and the need for private capital to fill financing gaps left by government programs (per public speaking records). Development Principles Group differs from most post-exit family offices in structure: it is neither a formal single-family office with a named CIO nor a standard private investment firm. It functions as Silby’s personal investment vehicle, blending a founder’s market experience with a public-policy lens. Succession planning and the vehicle’s long-term permanence beyond its founder are not disclosed, leaving the operation as an extension of one individual’s five-decade thesis that asset allocation is a form of civic participation.