This case study, authored by Aidis, Eissler, Etchart, and Truzzi de Souza explores how small impact investing firms can begin integrating a gender lens within existing portfolios of small and growing businesses. Drawing on a pilot initiative by NESsT, the study examines initial steps taken to introduce gender-inclusive policies and practices across portfolio companies and internal operations. It presents key findings from the pilot, highlights practical challenges and enabling factors, and distils actionable lessons and recommendations for incorporating gender lens investing (GLI) into investment processes, particularly for smaller firms seeking pragmatic, incremental approaches to advancing gender equity.