[Abstract]
Employee spinoffs—firms founded by former employees of established companies—consistently outperform unrelated entrants. This study investigates the underlying drivers of this advantage, with a focus on the inheritance of critical customer and supplier knowledge from parent firms. Using comprehensive administrative data on Turkish firms from 2006 to 2020, including firm-to-firm transaction records and matched employer-employee data, we show that inherited value chain knowledge plays a crucial role in spinoffs' superior performance. This inherited social capital explains over half of the observed performance gap, with a one-standard-deviation increase in inherited connections linked to a 20% rise in real sales. By identifying this key mechanism for entrepreneurial success, our research deepens the understanding of how prior employment and firm-specific knowledge create enduring advantages for new ventures, advancing both entrepreneurship theory and practice.