The "Mondays of AI and Finance" is a series of conferences on the regulation of AI in the financial sector. In this context, speakers from the ACPR (Autorité de Contrôle Prudentiel et de Résolution) and researchers from Télécom Paris meet every two months on a Monday to discuss various topics in the field. This series of conferences is organized by the XAI for Anti-Money Laundering and Finance Digitale chairs with the participation of the DSAIDIS chair, within the Operational AI Ethics initiative of Télécom Paris. In this third workshop with the ACPR, we will discuss data sharing for AI in finance. The conference will be organized in two roundtables each followed by an open discussion.