#1417
Katherine Tanner
United States 70 years old
Overview
- Source of Wealth
- Cargill
- Industry
- Food & Beverage
- Residence
Biography
Katherine Tanner owns an estimated 3% stake in Cargill, the largest food company in the world.
She's one of four billionaire sisters who inherited stakes in the company from their father W. Duncan MacMillan, who died in 2006.
Her great-great-grandfather, W.W. Cargill, founded the business as a single grain warehouse on the end of an Iowa railroad line in 1865.
The family still owns roughly 90% of Cargill, which did $114 billion in 2019 sales across food, agriculture, financial and industrial divisions.