Clive Grannum

CEO, NAS - North American Stainless

Clive A. Grannum has served as the President and CEO of North American Stainless, the largest fully integrated stainless-steel producer in the U.S. and a leading provider of high-quality stainless steel and high-performance alloys, since 2025.


● Prior to joining North American Stainless, Mr. Grannum served as President of Performance Materials for Materion Corporation, a leading advanced materials supplier, from 2018 to 2025.
● Prior to joining Materion, Mr. Grannum served as President of Global Chlorinated Organics at
Olin Corporation, a global manufacturer and distributor of chemical products, from 2015 to 2016.
●  Prior to joining Olin, Mr. Grannum held a number of senior leadership roles at Dow Chemical
Company, including President, Global Chlorinated Organics and SAFECHEM from 2014 to 2015; Global Managing Director, Plastics Additives, Global Chlorinated Organics and SAFECHEM from 2011 to 2014; and Vice President, Corporate Officer and Global Business Director, Plastics Additives from 2008 to 2011.
● Prior to joining Dow Chemical, he served as the Vice President of Plastic Additives for Rohm
and Haas Company, a global specialty chemical producer, from 2007 to 2008.
● Prior to joining Rohm and Haas, Mr. Grannum served as the Vice President and General
Manager of Uniqema Americas for the ICI Group, a U.K. based global chemical company.
● Earlier in his career, Mr. Grannum held several roles of increasing responsibility for the BOC
Group, top tier a global industrial gas manufacturer, with his last role being the Vice President and General Manager of Package Systems.


Educational Highlights:
● Mr. Grannum holds a a Masters in Business Administration from Yale University and a
Bachler's of science in Aerospace Engineering from Boston University.