About Katherine Tanner
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.
Personal stats
Citizenship
United States of AmericaSource of wealth
CargillBirth date
12/15/55Self-made
inheritedKatherine Tanner’s fortune is worth
30K
troy ounces of gold
27K
median U.S. household
18K
median U.S. income
0.036%
U.S. credit card volume
0.007%
GDP of the United States
0.005%
United States debt
Net worth history
Annual ranking
Net worth over time
Real-time ranking
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