Billionaire Profile
Pauline MacMillan Keinath
Global Rank
#355

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Pauline MacMillan Keinath

CEO, Cargill
UNITED STATES
Real-Time Net Worth
$9.501B
Estimated based on Cargill stock value as of March 6, 2026
0% (24h)
Age
92
Source
Cargill
Industry
food-beverage
Citizenship
UNITED STATES

Biography

Pauline MacMillan Keinath, born in 1934, is an American billionaire heiress and a prominent figure in the food and agriculture industry. Her wealth stems from her significant ownership stake in Cargill, the largest privately held company in the United States, which was founded by her great-grandfather. As of June 2024, her net worth is estimated to be $8.2 billion, ranking her among the wealthiest individuals globally. Her career highlights include inheriting a substantial stake in Cargill, which has allowed her to shape the success of the corporation and become a recognized figure in the business world. She maintains a private life, but is known for her philanthropic efforts.

Fact Checked
Verified by Editorial Team
Live Data
Updated 3/6/2026

Wealth Over Time

In-Depth Profile

Early Life

Pauline MacMillan Keinath was born on July 31, 1934, in Hennepin County, Minnesota. She is a descendant of William Wallace Cargill, who founded Cargill in 1865. Her father was Cargill MacMillan Sr.

Rise to Success

Pauline Keinath's wealth comes from her 9% stake in Cargill, the largest private company in the U.S. This significant ownership has made her the wealthiest person in Missouri in 2022. She inherited this stake, solidifying her position as a major shareholder in the agribusiness giant.

Key Business Strategies

While not actively involved in the day-to-day operations, her substantial shareholding allows her to influence the company's direction. Cargill's success is attributed to strategic partnerships and expansion, particularly during the Great Depression. The company has diversified globally, entering various sectors including trading, agriculture, and financial services.

Philanthropy

Pauline MacMillan Keinath is known for her philanthropic efforts, particularly in the arts and education. She supports institutions and programs aimed at promoting creativity, learning, and cultural enrichment. Her contributions have made a tangible difference, especially in underserved communities.

Career Milestones

1934

Birth

Born in Hennepin County, Minnesota.

Unknown

Inherited Cargill Stake

Inherited a significant ownership stake in Cargill.

2022

Richest Person in Missouri

Recognized as the wealthiest person in Missouri.

Philanthropy & Social Impact

Arts and Education

Arts and Education Support

Unknown

Supports institutions and programs focused on arts, education, and cultural enrichment.

Controversies & Challenges

2021

Political Donations

Donated to Josh Hawley, despite his involvement in the January 6 Capitol attack and contributed to the Life and Liberty PAC.