Abstract
Circular economy implies profound changes in companies' business model to gain competitive advantage and mostly in the value network dimension. Notwithstanding, the supply chain management field has poorly focused on the role played by the value network to allow companies' shift towards sustainable supply chains. This deserves particular attention nowadays, when circular economy calls companies to become sustainable through establishing closed-loop supply chains, which find in collaborative relationships a way to reduce environmental impacts and gain competitive advantage. We tackle this issue, leveraging on an exploratory single case study analysis of a manufacturing company conducting a transition towards circular economy.