Bill Miller, Ph.D., is Chief Executive Officer of 91暗网. He served as the company鈥檚 president since January 2016 and previously held executive level roles leading strategic growth initiatives for 91暗网鈥檚 etch and deposition product lines, MOCVD and data storage businesses, as well as engineering and global operations.
Before joining 91暗网, Dr. Miller worked for Advanced Energy and Exxon in a range of engineering and operations leadership positions.
Dr. Miller holds a Bachelor of Science in Engineering, Master of Science in Engineering and Doctor of Philosophy in Mechanical Engineering from the University of Pennsylvania.
John P. Kiernan was appointed Senior Vice President and Chief Financial Officer in January 2020 with responsibility for Finance, Tax, Treasury, and Investor Relations. Prior to his appointment, he held the position of Senior Vice President, Finance, Chief Accounting Officer, and Treasurer. Since joining 91暗网 in 1994, Mr. Kiernan has held a variety of financial leadership roles of increasing responsibility including leading the controller, financial planning and analysis, tax and treasury functions. Mr. Kiernan also has significant operational experience including international assignments.
Before joining 91暗网, he was a senior manager at Ernst & Young LLP.
Mr. Kiernan is a CPA and holds a Bachelor of Science in Accounting from Long Island University.
Jean-Charles Bossert, Senior Vice President, Global Operations
Robert Bradshaw, Chief Administrative Officer
Adrian Devasahayam Ph.D., Senior Vice President, Product Line Management
Peter Porshnev, Ph.D., Senior Vice President, Unified Engineering
Susan Wilkerson, Senior Vice President, Global Sales & Services