Management Team

Robert S. Wetherbee

, Board Chair and Chief Executive Officer


Mr. Wetherbee became CEO of ATI in 2019, and was named Board Chair in 2021. Prior to that, he was ATI’s Executive Vice President, Flat Rolled Products since January 2015, and President, ATI Flat Rolled Products beginning in April 2014. Mr. Wetherbee was President and Chief Executive Officer of Minerals Technologies, Inc. from March 2013 until February 2014. He was President of ATI’s tungsten materials business from 2010 through 2012 and Vice President of Market Strategy of Alcoa Inc. from 2006 through 2009.

Tina Busch

, Senior Vice President and Chief Human Resources Officer


Ms. Busch joined ATI as Senior Vice President, Chief Human Resources Officer in October 2022. She leads our human resources organization and partners closely with the businesses to strengthen ATI’s talent strategy, especially in the areas of engagement, leadership development, and diversity, equity and inclusion. Ms. Busch previously served as CHRO of the Performance Materials & Technologies group at Honeywell, and held several roles throughout her career at Kimberly-Clark Corporation, including Vice President, Human Resources for the Asia Pacific region, Global Diversity Officer, and Global Learning Officer. She also held the position of Vice President, Learning and Performance, at Pitney Bowes.

Elliot S. Davis

, Senior Vice President, Chief Legal and Compliance Officer


Mr. Davis has served as ATI’s Senior Vice President, Chief Legal and Compliance Officer since May 2011. Previously, he was Vice President and General Counsel from 2010 to May 2011. Prior to that, he served as Assistant General Counsel from 2008, when he joined the Company, to 2010. Before joining ATI, Mr. Davis was a partner of the law firm K&L Gates LLP, where he practiced for nearly 20 years in its corporate, mergers and acquisitions and securities group.

Kimberly A. Fields

, President and Chief Operating Officer


Ms. Fields is President and Chief Operating Officer. Ms. Fields joined ATI in 2019, bringing 20 years of global experience with a focus on growth and operational excellence. At IDEX Corporation, a global company that develops, designs, and manufactures fluidics systems and specialty engineered products, she most recently served as Group President for Industrial and Energy, having joined as President of GAST Manufacturing. Previously, Ms. Fields served as Executive Vice President for the integrated global steel producer EVRAZ’s North American Flat Products business. At GE Energy, she was General Manager of Industrials. She has also held commercial, manufacturing, and strategic leadership positions with Alcoa, The Boston Consulting Group, and Owens Corning Fiberglass. She was a founding member of the online metals trading site MetalSpectrum.

Timothy J. Harris

, Senior Vice President, Chief Digital and Information Officer


Mr. Harris joined ATI as Senior Vice President, Chief Digital and Information Officer in May 2019. He leads ATI’s information and operations technology organization, developing and deploying a technology strategy to support the company’s growth and accelerate our digitization and automation. Mr. Harris previously served as Chief Information Officer at Andeavor, Chief Technology Officer and head of Global Technology Services at Mylan, and Senior V.P. of Global Workplace at Aviva PLC. He began his career at Rockwell Collins, where he worked for 10 years.

Don P. Newman

, Executive Vice President, Finance and Chief Financial Officer


Mr. Newman joined ATI as Senior Vice President, Finance and Chief Financial Officer in 2020. He brings more than 30 years of corporate finance and accounting leadership experience at high-growth businesses in a variety of industries, including metals and materials, energy, software, and drilling services. Most recently, Newman was Chief Financial Officer at North American steel producer Stelco Holdings Inc., where he helped lead the company’s successful 2017 initial public offering, separation from its prior owner, and transformation into a low-cost, performance-driven organization.

Jimmy Williams, Jr.

, Senior Vice President and Chief Technology Officer


Dr. Williams joined ATI as Senior Vice President and Chief Technology Officer in November 2022. This newly created role elevates technology at ATI and accelerates progress on our product and process technology priorities, more directly enabling and aligning them with our business strategy. Dr. Williams served as executive director and distinguished service professor of Carnegie Mellon University’s interdisciplinary Engineering and Technology Innovation Management program. Previously, he was senior vice president of global engineering of Pall Corporation, and senior director of research and development at Alcoa. In his 20-year career at Boeing, Dr. Williams held numerous research and development and program management positions, earning Boeing's Black Engineer of the Year award in 2001.