Introduction. This paper examines academics’ information behaviour in undertaking research for societal impact. It explores how researcher-stakeholder relationships provide sites of information exchange where academics develop skills and knowledge needed to undertake impact work. Method. This qualitative study involved semi-structured interviews with 27 academics at 18 institutions across Australia. Participants were recruited across disciplines and at various career stages. Analysis. Constructivist grounded theory was used as a methodology, with Fiske's Relational Models Theory as a framework for analysis. Results. Results show that information behaviours relating to impact work were enacted within relationships with industry, community, and government partners. These relationships were characterised by four elements: curiosity, reciprocity, trust, and engagement. Conclusion. The paper presents a model of Relational-Informational Impact Practice to guide individual researchers’ information behaviours and to inform university support programs for researchers engaged in societal impact work. The model outlines the interplay between curiosity, reciprocity, trust, and engagement, and impact-relevant information behaviours, such as information needs identification, sharing practices, and serendipity.