Abstract: Coalitions are the rule in crisis management and military operations. Although the partners do not form part of an organizational hierarchy, they need to share information to find their place in the coalition, to prepare plans collaboratively, to synchronize their actions, to evaluate their achievements, and to negotiate changes in their relationships. Interviews of experienced military officers have shown that information sharing in coalitions is more complex than one-way information transmission. It has the characteristics of an information market in which security regulations give information a scarcity value, with both sources and recipients initiating action. The emerging literature on information markets includes few process models. The purpose of this paper is to propose a theoretical, four-stage process model for information sharing between coalition partners in the context of Network Enabled Capabilities. The model combines information sharing and seeking, integrates intelligence collection, and supports a range of market mechanisms.