Mosaic promotes associate GC to top role as former legal chief becomes CFO

Fortune 500 fertiliser producer Mosaic has promoted associate general counsel Mark Isaacson, three months after former general counsel Richard Mack became the company’s chief financial officer (CFO).

Mack was promoted to CFO and executive vice-president of Mosaic in May. Mack was the company’s head of legal for 10 years, and had held the post of senior vice-president since 2004. 

Isaacson joined Mosaic on its listing in 2004 as chief phosphates counsel, before being promoted to vice president, associate general counsel and chief compliance officer three years ago.

Mack’s elevation to CFO followed the announcement that CEO James Prokopanko was taking a medical leave of absence for cancer treatment. CFO Lawrence Stranghoener was named interim CEO and also announced his retirement at the end of the year, prompting Mack’s promotion, which took effect on 1 June.

Isaacson will bring his experience in compliance, commercial transactions, litigation and antitrust practice to his new role. Prior to joining Mosaic, Isaacson worked for 15 years at Cargill, where he served as senior attorney for a number of its business units. 

The company declined to comment further on Isaacson’s appointment.