MINNEAPOLIS — Sergio Rial, chief financial officer at Cargill, will resign his post with the company effective at the end of November in order to return to his native Brazil for personal reasons. David MacLennan, president and chief operating officer, will serve as interim c.f.o. until Cargill’s board of directors elects a successor.

Mr. MacLennan joined Cargill in 1991 and has held management positions within the financial, risk management, energy and animal protein businesses. He previously was c.f.o. from 2008 to 2011. While in the interim role, Mr. MacLennan will continue as the company’s president and c.o.o.

“Since joining us in 2004, Sergio has energized our growth in Latin America and provided vigorous and thoughtful leadership as a member of the Cargill leadership team and board of directors and as chief financial officer,” said Greg Page, chairman and chief executive officer.

Mr. Rial was a leader of Cargill’s group of food businesses since 2004 and of Cargill’s financial services businesses since 2009. He became a senior vice-president and member of the Cargill leadership team in 2009. He also was the company’s regional director for Latin America and executive chairman of CarVal Investors, an independently managed Cargill subsidiary. He was elected to the Cargill board of directors in 2010 and elected c.f.o. in 2011.