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​​​​Gary L. Castagna

Group President, Performance Materials.

Gary was named Senior Vice President and Managing Director of  Performance Materials, June 2014 to March 2017.

Before joining Minerals technologies, Gary was Chief Operating Officer of AMCOL International, a position he assumed in November of 2013. He joined AMCOL in 1990 in Internal Audit and was promoted to positions of increasing responsibility. In 1993, he was named Managing Director of Chemdal Ltd., an AMCOL subsidiary, and in 1997, to president of Chemdal International Corp. In 2001, he became Chief Financial Officer of AMCOL, and 2008, he transitioned from CFO to President of Performance Materials.

Gary holds a degree in accounting from Lake Superior State University.