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Billionaire Profile
Sarah MacMillan
Global Rank
#1812

Image: George Hodges | CC BY-SA 4.0 | via Wikimedia Commons

Sarah MacMillan

CEO, Cargill
Los Angeles, California
Real-Time Net Worth
$2.29B
Estimated based on Cargill stock value as of September 10, 2026
0% (24h)
Age
72
Source
Cargill
Industry
food-beverage
Citizenship
United States

Biography

Sarah MacMillan, born in 1953, is an American heiress and a major shareholder in Cargill, the largest private company in the United States. Her estimated net worth is $2.6 billion as of March 2026. She inherited her wealth from her father, W. Duncan MacMillan, who died in 2006. MacMillan is one of several family members who collectively own a significant portion of Cargill. Her career has been largely private, with no known involvement in Cargill's day-to-day operations. The company, founded in 1865, operates in the food and agriculture industries, generating $154 billion in revenue in 2025.

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Data Updated
Sep 10, 2026
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Wealth Over Time

Net Worth History

YearNet Worth
2026$2.29B
2025$2.60B
2024$2.60B
2023$1.98B
2022$2.55B
2021$1.59B
2020$1.37B

In-Depth Profile

Early Life

Sarah MacMillan was born in 1953, one of the many descendants of William Wallace Cargill, who founded Cargill in 1865. The Cargill-MacMillan family has a long history in the agricultural and food industries. Sarah inherited her stake in Cargill from her father, W. Duncan MacMillan, who died in 2006.

Rise to Success

Sarah MacMillan's wealth stems from her inheritance of a stake in Cargill, the largest private company in the United States. The company has grown from a single grain warehouse to a global leader in food, agriculture, financial, and industrial products and services. The family's involvement in Cargill has spanned over 140 years. Sarah, along with other family members, holds a significant portion of the company.

Key Business Strategies

Cargill's success is built on its diversified business model and global presence. The company has expanded through acquisitions, partnerships, and a focus on innovation. While Sarah MacMillan isn't directly involved in the company's operations, her wealth reflects Cargill's overall performance and strategic decisions.

Philanthropy

Information on Sarah MacMillan's specific philanthropic activities is not readily available through search results. However, the Cargill company itself engages in philanthropy, contributing to various initiatives. Details on her personal contributions could not be determined with the available information.

Billionaires Connected to Sarah MacMillan

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Frequently Asked Questions

What is Sarah MacMillan's net worth in 2026?
As of 2026, Sarah MacMillan's estimated net worth is $2.29 billion, ranking #1812 among the world's billionaires. The estimate is based on publicly available shareholding data and market prices, updated daily.
How did Sarah MacMillan make their money?
Sarah MacMillan's wealth primarily comes from Cargill, most notably through Cargill.
Where is Sarah MacMillan from?
Sarah MacMillan is from United States.
How old is Sarah MacMillan?
Sarah MacMillan is 72 years old.

Sources & References

  1. Sarah MacMillan — Forbes profile — Forbes