Hon. Henry F. De Sio, Jr. is known as the global ambassador for changemakers. A leadership advisor, campaign and organizational strategist, and keynote speaker, he has served as the executive of both startups and large, complex organizations. As the 2008 Chief Operating Officer (COO) of Barack Obama's presidential campaign, and then serving as Deputy Assistant to the President in the Obama White House, De Sio came to be intimately acquainted with a new emerging pattern of societal change. He has since followed his campaign-driven passion for hope and change to make changemaking a global phenomenon.

De Sio has engaged with the world's leading social and business entrepreneurs, and he has brought the powerful framework of new leadership and team-of-teams organization described in Changemaker Playbook to business boardrooms, editorial newsrooms, university classrooms, governmental chambers, and community forums all over the world.

De Sio holds a master's degree in public administration from Harvard's Kennedy School, and he earned his B.A. in political science from the University of California-Santa Barbara.