TechnipFMC CFO Resigns, Replacement Named Jan 14, 2021 7:30:am Summary Mannen's decision to leave comes as the group prepares to split itself into two independent companies. by: Joe Murphy Posted in: TechnipFMC CFO Resigns, Replacement Named London-headquartered services group TechnipFMC announced on January 12 that its CFO Maryann Mannen had resigned and would be replaced by Alf Melin, who has been with the company since 1995. Mannen has held the post since 2017. Previously she was CFO at FMC Technologies before its merger with Technip. She will go on to serve as CFO and executive vice president at US company Marathon Petroleum beginning on January 25, where she will succeed Donald Templin, who is retiring.