Arthur F. Anton joined the Board in 2009. From 2017 until his retirement on December 31, 2019, Mr. Anton served as Chairman of the Board and Chief Executive Officer of the Swagelok Company, a fluid systems technologies company. Since 1998, Mr. Anton served in the following positions at the Swagelok Company: President and Chief Executive Officer, from 2004 to 2017; President and Chief Operating Officer, from 2001 to 2004; Executive Vice President, from 2000 to 2001; and Chief Financial Officer, from 1998 to 2000. He is a former Partner of Ernst & Young LLP, a professional services organization. Mr. Anton serves as the Chairman of the board of SunCoke Energy, Inc. and serves on the board of directors of Diebold Nixdorf, Incorporated. He previously served on the board of directors of The Sherwin-Williams Company. As the previous head of a large private corporation, Mr. Anton provides valuable insight into the successful operation of a business, which serves him well as the Lead Director of the Board, and as a member of the Audit and Compliance Committee and the Compensation Committee. As a former partner at Ernst & Young LLP, and a member of the audit committee of The Sherwin-Williams Company, Mr. Anton possesses a detailed understanding of accounting principles and practices.