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Sean Donnelly


Since 2014, Sean Donnelly has served as the President and CEO of ArcelorMittal Dofasco in Hamilton. He is also a current Member of the ArcelorMittal Management Committee.

Throughout his 38 year career at ArcelorMittal Dofasco, Sean has held various leadership positions including Vice President Manufacturing, Vice President Technology, Director Quality Systems & Manufacturing Technology, General Manager Market Development and Product Applications, New Product Development Process Owner, Galvanize Technology Business Unit Manager and Operations Foreman.

Sean joined Dofasco in 1981 as a Production Engineer in Galvanize after graduating from Hamilton's McMaster University with a degree in Metallurgical Engineering. He is a current member of several boards, including McMaster University Board of Governors, Canadian Steel Producers Association and Canadian Automotive Partnership Council.