NET WORTH: $1.3 billionAGE: 66RESIDENCE: MalibuSOURCE OF WEALTH: Inheritance, food manufacturing/distribution, agricultureLAST YEAR: N/ACHANGE: NEWTHE MONEY: Sarah MacMillan is one of four daughters of William Duncan MacMillan who became billionaires after inheriting stakes in Cargill Inc. from their late father in 2006. She is estimated to hold 3% ownership in Cargill, the largest private company in the United States and the largest food company in the world. The business experienced a volatile year as Covid-19 rattled agricultural commodities markets. Cargill took hits from pandemic-driven shutdowns at its meat plants and an anticipated downturn in the palm oil industry before bouncing back to report $114.6 billion in revenue for its fiscal year ended in August. THE BUZZ: MacMillan is rarely seen in public. She and her three sisters are among 14 billionaire descendants of Cargill Inc. founder William Wallace Cargill. Together with other relatives, they control roughly 90% of the agriculture titan, although MacMillan has no known involvement with the business’ operations. According to financial records reviewed by Bloomberg, Cargill paid its shareholders a record dividend totaling $1.13 billion in its 2020 fiscal year, up 76% from the year prior.