S. Mayumi “Umi” Grigsby is the Chief of Policy for the City of Chicago. She previously served as the Chair and a Commissioner on the Cook County Human Rights Commission; the Chief of Staff at the Chicago Foundation for Women; the Chief of Policy and Advocacy for the Office of the City Clerk of Chicago, under City Clerk Anna Valencia; and also as an Assistant State’s Attorney under the administration of Cook County State’s Attorney Kim Foxx. 
 
Grigsby has long pushed for policies that empower marginalized communities, particularly women and girls of color, to be the engineers of their own change. She previously held a variety of roles locally, nationally, and internationally in grant-making, policy development, and logistics, and in criminal justice and litigation. She worked in former President of Liberia Ellen Johnson Sirleaf’s administration on an international colloquium bringing women from all over the world to Liberia to discuss leadership development, peace, and security. An attorney licensed to practice in Illinois, she also worked as an assistant state’s attorney.
 
Grigsby is a native Liberian, naturalized American, and adopted Chicagoan. Bilingual in French and English, she holds a bachelor’s degree in French and government from Georgetown University and graduated from Northeastern University’s School of Law with a concentration in international law and human rights.