| Pauline MacMillan Keinath | |
| Birth Name: | Pauline MacMillan |
| Birth Date: | 31 July 1934 |
| Birth Place: | Hennepin County, Minnesota, US |
| Known For: | 9% stake in Cargill |
| Occupation: | Heiress |
| Spouse: | Married |
| Children: | 4 |
| Relatives: | William Wallace Cargill (great-grandfather) Cargill MacMillan Jr. (brother) Whitney MacMillan (brother) |
Pauline MacMillan Keinath (born July 31, 1934 in Hennepin County, Minnesota) is an American billionaire heiress. She is believed to be the largest individual shareholder in Cargill.[1]
As of June 2024, she has a net wealth of $8.2 billion from an inherited 9% stake in Cargill.[2]
In 2014, she was the 16th richest woman in the US.[3] In 2022, her wealth made her the richest person in Missouri.[4]
She is a great-granddaughter of William Wallace Cargill, the founder of Cargill, the largest private company in the US. Her father was Cargill MacMillan Sr. (1900-1968). She has two siblings, Whitney MacMillan (1929-2020) and Cargill MacMillan.[5]
She is married, with four children, and lives in St. Louis, Missouri.
Keinath continued support of Josh Hawley after his role in the January 6 United States Capitol attack, with donations of $1,900 reported in the second half of 2021.[6]
In 2023, the family of Pauline MacMillan Keinath are the largest donors to Andrew Bailey's run for Missouri Attorney General, having contributed $375,000 to the Life and Liberty PAC.[7]