RETHINK’s envisioned impact is to contribute to transformative learning in the science communication ecosystem, and to support open and reflexive science communication theory and practice. The RETHINK story has been shared across a variety of audiences, both science communication scholars and practitioners, as well as members of society. This was done in numerous interactive sessions and dissemination activities, in produced outputs of the RETHINK project, training and education events, webinars, on social media, and in presentations at conferences and other fora. The Rethinkerspaces have organized five workshops, gathering actors from theory and practice and from different disciplines and backgrounds. Furthermore, a focus was put on sustainability of the Rethinkerspace transformative learning network, and the organization of activities beyond the RETHINK project with members of Rethinkerspaces was an important aim that was facilitated. Additionally, more research outcomes were discussed within the wider JCOM community in two special issues, providing a platform for further engagement with stakeholders and citizens. Lastly, events such as the RETHINK winter school and the Workroom for Ecsite public engagement experts were organized, wherein science communication scholars and practitioners were brought together – with the wider goal to facilitate connections between science communication theory and practice, by bringing the RETHINK story and insights to these fields. With this, we have performed research activities within each interactive session we organised, representing a unique opportunity for a variety of actors active in science communication to meet and interact locally – and who have brought RETHINK’s insights further into their own local networks as well. Additionally, our research, outreach and impact activities have been a mean for us to better understand local practices, challenges and barriers to science communication in each community. With this, we have contributed to open, reflective and transformative learning, inquiry and science communication practice.