Although informal networks are often emphasized as facilitating knowledge transfer, we use network data obtained from a multi-unit high-tech firm to show that the formal network also significantly contributes to inter-unit knowledge transfer. Individuals centrally placed in a network are, in addition, more involved in knowledge transfer, especially, the evidence suggests, in the case of the formal network. Focusing on the brokerage roles that individual fulfill, we find that knowledge transfer between units is more likely to occur through externally oriented brokers than internally oriented brokers in the formal network, but not in the informal network. Overall, the results show that there is more than one path to transfer knowledge
