Advantest Corporation announced that the Board of Directors at its meeting held on February 28, 2024, resolved to change the company?s representative directors as follows. Reason for the changes: As the company?s next mid-term management plan starts in fiscal year 2024, the Chief Executive Officer of the Advantest Group and the President of Advantest Corporation are to be changed in order to realize even greater progress for the Advantest Group in the rapidly changing, fast-growing semiconductor industry. The company appointed Douglas Lefever as Representative Director, Senior Executive Officer, Group CEO from Representative Director, Corporate Vice President, Group COO; Koichi Tsukui as Representative Director, Senior Executive Officer and President, Group COO from Representative Director, Corporate Vice President, Group Co-COO; Yoshiaki Yoshida as Director, Chairperson of the Board from Representative Director, President, Group CEO.

Effective date: April 1, 2024. Douglas Lefever (December 10, 1970): May 1993- Completed BSE of Mechanical Engineering, The University of Michigan; May 1995- Completed Master of Science in Mechanical Engineering, The University of Texas at Austin; June 1998- Joined Advantest America Inc.; June 2004- Completed Master of Business Administration (MBA) Northwestern University; September 2008- Vice President, Business Development, Advantest America Inc.; August 2014-Executive Officer, Advantest Corporation; September 2014- Director, President and CEO, Advantest America Inc.; June 2017- Managing Executive Officer, Advantest Corporation; June 2019- Executive Vice President, System Test Business Unit (present position); June 2020- Director, Managing Executive Officer Customer Relations & Corporate Strategy Leader, Applied Research & Venture Team; June 2021- Director, Senior Executive Officer CSO (Chief Strategy Officer); January 2023- Representative Director, Corporate Vice President, Group COO (present position). Koichi Tsukui (December 11, 1964): March 1987- Graduated from Electrical Engineering, School of Technology, Gunma University; April 1987- Joined Advantest Corporation; April 1998- Seconded Advantest (Europe) GmbH (currently Advantest Europe GmbH); June 2013- Leader, New Business Enabling Division, New Concept Product Initiative; June 2014- Executive Officer; June 2015-Managing Executive Officer; June 2016-Executive Vice President, Corporate Relations Group; June 2018-Executive Vice President, Memory Test Business Unit, ATE Business Group; June 2019-In Charge of DH Business Group; June 2020-Director, Managing Executive Officer Test Technology Leader, ATE Business Group; June 2021- Director, Senior Executive Officer CTO (Chief Technology Officer); January 2023- Representative Director, Corporate Vice President, Group Co-COO (present position).