Organizations have invested heavily in recruiting women, yet too many continue to lose experienced talent during the critical mid-career years. This is the very stage where future leaders are developed. This “missing middle” or leaky leadership pipeline represents more than a gender equity challenge; it is a costly business problem that affects retention, succession planning, institutional knowledge, and long-term organizational performance. Drawing on the Center for Women in Business’s latest research, this session examines one of today’s most pressing workforce challenges: why organizations are losing experienced women during the critical mid-career years and what leaders can do to retain them.