Part of series developed by UN Women and the Luxembourg Stock Exchange with the support of Luxembourg Aid & Devlopment, this case study features a $30 M USD social bond issued by NMB Bank, a large commercial bank in Tanzania, and dual-listed on the Dar-es Salaam and Luxembourg stock exchanges in 2022. A social bond is a type of use of proceeds (UoP) gender bond, which directs the bond proceeds toward the economic activities of identified investees. The proceeds will support credit facilities, preferential interest rates loans, and working capital loans for SME and MSMEs owned by women or that have 30%-50% women in their workforce, as well as MSMEs offering products and services benefiting women.