That future demands a shift: from transactional leadership to transformational, intergenerational leadership (IGL). This report presents the findings of a global, co-created research journey by World YWCA and One Future Collective to lay the groundwork for a tool that enables feminist civil society organisations to practice, assess, and strengthen intergenerational leadership in all its richness and complexity. Rooted in over a century of global leadership, the commitment to intergenerational leadership was renewed and reaffirmed at the World YWCA Council meetings in 2011 (Zurich) and 2015 (Bangkok)—moments that shaped our recent Strategic Frameworks (2020-2023) and (2024-2027) and clarified the centrality of intergenerational leadership to our collective vision for transformation.