Rena Greifinger is a social entrepreneur, philanthropy leader, and advocate for women and girls. She is Managing Director of Maverick Collective by PSI, a community of women philanthropists making catalytic investments in health and reproductive rights to elevate women and girls everywhere.

In 2018, Rena founded Maverick Next, an immersive two-year

fellowship for emerging women philanthropic leaders. As PSI's Global Youth & Girls Advisor for five years, she led the organization's work in

design-thinking and private sector approaches to adolescent sexual and reproductive health. Rena also founded Next Step’s One Love Project for youth living with HIV in the U.S. She sits on the boards of Next Step and Mamamtoto Village, a maternal health organization serving Black women in Washington D.C. In 2021, Rena was named one of Apolitical’s Top 100 Influencers in Gender Policy. She holds a Master’s of Science from the Harvard School of Public Health.