The 3^rd CISE Stakeholder Group meeting of the transitional phase of the Common Information Sharing Environment (CISE) took place on 13 February 2020, where members joined to discuss the activities of the transitional phase and its progress. Amongst other topics, an update was given on the development in a dedicated working group of a Cooperation Agreement for information sharing, and another working group was set up to analyse the concept of Responsibility to Share. The plan for a test campaign was agreed, and a forthcoming Security Study was discussed. CSG members were updated of the back-to-back workshop of the European Coast Guard Functions Forum (ECGFF) on 11-12 February 2020 in Lisbon, where CISE had been one of the thematic sessions. EU Agencies and services provided status reports for their plans and implementation of the CISE network, following similar presentations by member states at previous meetings. Participants, increasing in numbers, represented in total 15 EU/EEA member states coming from different maritime surveillance sectors, the European Commission (DG MARE), EDA, EEAS, EFCA, EMSA, JRC, Frontex and SatCen.