Some organizations collaborate with other partner organizations to reach common goals, establishing Interorganizational Networks. The governance of the network is often enacted by an Interorganizational Governing Team composed of the directors or top managers of the partner firms. This team plans, manages, and supervises the advancement of the network's common goals. The success of the network depends, to a large extent, on the involvement of the members of the governing team. In this study, we tested a multilevel model of the antecedents of the involvement of governing team members in the management activities of interorganizational networks. We examined whether the relationship between team interorganizational trust, as a team level construct, and individual involvement in management activities is partially mediated by individual affective commitment. Using a sample of 101 respondents belonging to 28 interorganizational governing teams, we tested a multilevel mediation model. Results showed, as expected, a positive indirect effect of team interorganizational trust on individual involvement through individual affective commitment. However, unexpectedly, team interorganizational trust also showed a negative direct relationship with individual involvement. Based on our findings, we highlight the need to also consider the 'dark side' of interorganizational trust, and we propose potential mediators to explain the unexpected negative relationship.