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Antoine Marcos has extensive work experience in finance and accounting. Antoine currently holds the position of Corporate Controller and Chief Accounting Officer at ChampionX since June 2020. Prior to that, they served as the Senior Vice-President Finance EMEA at Ecolab from June 2015 to July 2019. Antoine also worked at NalcoChampion, an Ecolab Company, as the SVP Finance, Upstream from July 2019 to June 2020. Antoine has held various leadership roles in finance, including Vice President Finance, Energy Services at Nalco Champion from March 2009 to 2014, and CFO Asia Pacific at Nalco from 2003 to 2009. Early in their career, Antoine worked as an Auditor at Mazars from 1993 to 1998. Additionally, they have experience as the CFO of Degrémont Mexico and as a Finance Controller at Degrémont.

Antoine Marcos attended NEOMA Business School from 1989 to 1993. No specific degree or field of study was mentioned for this period.