Billionaire Profile
Sarah MacMillan
Global Rank
#1597

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

Sarah MacMillan

CEO, Cargill
UNITED STATES
Real-Time Net Worth
$2.581B
Estimated based on Cargill stock value as of March 6, 2026
0% (24h)
Age
72
Source
Cargill
Industry
food-beverage
Citizenship
UNITED STATES

Biography

Sarah MacMillan, a prominent heiress and descendant of the Cargill family, holds an estimated net worth of $2.4 billion as of 2024. Her wealth stems primarily from her significant stake in Cargill, the largest privately held company in the United States, which she inherited. Despite not being involved in the company's daily operations, her wealth is tied to the agricultural giant's performance. MacMillan resides in Los Angeles, California, and is known for maintaining a low public profile.

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

Wealth Over Time

In-Depth Profile

Early Life and Family

Sarah MacMillan is part of the Cargill-MacMillan family, the primary shareholders of Cargill, the largest privately held company in the U.S.. She is one of four sisters who inherited stakes in the company from their father, William Duncan MacMillan, who passed away in 2006. Her great-great-grandfather, W.W. Cargill, founded the business as a single grain warehouse in 1865.

Rise to Success

Sarah MacMillan's wealth is directly tied to the success of Cargill. Cargill is a global leader in food, agriculture, financial, and industrial products and services. The company's revenue reached $160 billion in 2024. The family retains a significant ownership stake in Cargill, ensuring their financial details remain private.

Key Business Strategies

Cargill's strategy has been to stay private and focus on its core businesses, including trading, purchasing, and distributing grain and other agricultural commodities. The company has also expanded into financial services and manages financial risks in the commodity markets. Cargill has made strategic decisions to fuel growth for the company and its customers.

Philanthropy

While specific details of Sarah MacMillan's philanthropic activities are not widely publicized, the Cargill-MacMillan family is known for its significant contributions to various causes. Further research is needed to determine her specific initiatives and amounts. The family is known for its discretion and prefers to keep its activities private.

Career Milestones

2006

Inherited Cargill Stake

Inherited an estimated 3% stake in Cargill from her father, William Duncan MacMillan.