The actor composition of interorganizational ego-networks is largely ignored in research on Territorial Innovation Models. To fill this gap, we explore with which sets of external actors (i.e. configurations) firms maintain interorganizational knowledge links. Subsequently, we analyze the differences in innovative performance between firms engaged in different configurations also taking into account taking their geographical dimensions. Four configurations emerged all of which have positive effects on a firm's innovative performance in comparison to the 'go-at-it-alone' strategy.After controlling for actor composition and tie depth, however, their geographical composition is found to be unrelated to the innovative performance of firms.JEL Codes: D83, L14, L25, O30