Mosby was born in Atlanta to Gwendolyn Mizell Mosby, a retired Burgess-Peterson Elementary School (Atlanta) teacher.[1][2] Mosby's father is Nathaniel "Nate" Mosby, who served as the second African American to the DeKalb County Commission. Nate Mosby was also chairman of the DeKalb Community Relations Commission, and served as the DeKalb community representative on the Atlanta Regional Commission. Mosby's father was employed as one of the first African American managers of the Federal Aviation Administration.
Mosby has three brothers and one sister; David Mosby, Warren Mosby, Phillip Mosby and Natalyn M. Archibong.[2][5] Mosby's sister, Natalyn Mosby Archibong[6] served as an elected council member on the Atlanta City Council.[7] His brother David serves as a former elected city council member of Oak Ridge, Tennessee's city council.[8]
Career
Mosby is a Certified Public Accountant. Beginning his healthcare career in internal audit at the Grady Health System, Mosby quickly rose thru the managerial ranks and became Vice President of Faculty Contracts Administration in the Division of Medical Affairs at the major healthcare institution.[9][10]
In 2009, Mosby assumed the chairmanship of the DeKalb County delegation to the Georgia House of Representatives.
Mosby currently serves as Chairman of the Board of Directors of the 1st Choice Credit Union, and Chairman of the Advisory Board of the East Lake Branch of the Metropolitan YMCA. He also served on the board of the Georgia Charitable Care Network as its treasurer. Rep. Mosby is also the past Treasurer of the National Black Caucus of State Legislators. He is a co-founder and Treasurer of the Health Education Advocacy Learning Collaborative (H.E.A.L.)[14]
On May 22, 2018, Mosby was defeated in the Democratic primary by Becky Evans. No Republican qualified to run in the general election of November 2018.[15]