Gayle is co-founder of an international consultancy offering strategic guidance in leadership development, programme strategy, and impact measures to leading foundations, corporations, impact investors, governments, and intermediaries. With more than 20 years’ experience as a strategist, philanthropist, and trusted adviser to social investors worldwide, Gayle has managed and assessed more than US$15 billion in philanthropic and impact investments. She has advised social investors in more than 45 countries and has taught social investing classes worldwide. Career highlights that have helped shaped Gayle’s researching, teaching and consulting include: Programme Director for the Great Lakes Protection Fund, where she created the first bi-national grant-making programme with the Great Lakes Governors and Premiers to promote environmental sustainability, economic development, and multi-sector collaboration. She has also served as Executive Director, Milkweed Editions, a literary press where she created an award-winning children’s literacy programme; and Chief of Staff, Commissioner of the Water Reclamation District of Greater Chicago, where she advocated for policies to expand employment opportunities for women. Gayle holds an MA in Social Policy and Law from the University of Chicago and an MSc from the HEC-Paris School of Management and Oxford University. She is a contributor to Alliance Magazine, the Financial Times, the Stanford Social Innovation Review, and the Huffington Post.