Rank #2417
Martha MacMillan
Net worth $1.7B
Cargill · United States
- Born
- Oct 01, 1951
- Age
- 74
- Source
- Cargill
- Residence
- Orono, Minnesota
- Citizenship
- United States
- Marital status
- Divorced
- Children
- 5
- Education
Net worth over time
Biography
- Martha MacMillan is one of 21 billionaire heirs to Cargill, the world's biggest agriculture business.
- 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 $154 billion in 2025 sales across food, agriculture, financial and industrial divisions.
- The Cargill-MacMillan family collects an estimated 18% of net profits as dividends every year.
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