Last week, the Hubs4Circularity Community of Practice (H4C), in collaboration with A.SPIRE and a dynamic working group comprising mature circular hubs (Kalundborg, Eyde Cluster, Brightland Circular Space, Hoechst Industrial Park), conducted an interactive session at the Transition Finance event organized by Chemelot on November 29th and 30th, 2023. The session delved into Business Modeling and Blended Finance for Industrial Symbiosis and Urban Industrial Symbiosis, aiming to foster H4C and industrial symbiosis.