Carol Jenkins Barnett

Carol Jenkins Barnett is the daughter of Publix supermarket founder George Jenkins and an heir to the Florida-based fortune.She owns just under 5% of the business, which is the largest employee-owned company in the U.S.After 33 years on the Publix board, she stepped down in June 2016 following a diagnosis of early onset Alzheimer's disease.Publix, founded in 1930, employs 190,000 people in 1,190 stores across 7 states and has revenues of over $34 billion.She started working for Publix at age 16.