The CFO of Dean Foods is to quit the US dairy giant to join an unnamed, listed company.

Jack Callahan, 52, joined Dean Foods in 2006 after previous roles at PepsiCo, General Electric and McKinsey & Co.

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In 2008, Callahan took on “corporate development” responsibilities at Dean Foods after Michelle Goolsby, executive vice president of development, sustainability and corporate affairs, left the business.

Under Jack’s leadership, we began and have made significant progress in our transformation of the business and the Finance function,” said chairman and CEO Gregg Engles. “Jack has led the development of strategies to build the Supply Chain Finance organisation in support of our transformation initiatives, drove needed realignment of core financial processes and attracted an impressive finance leadership team to Dean Foods.”

Shaun Mara, who joined Dean Foods as chief accounting officer in June, will replace Callahan, who will leave the company at the end of the month.

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