Notice Concerning Disposal of Treasury Stock under the Post-delivery Restricted Stock Unit System

Overview of Treasury Stock Disposal

Advantest Corporation resolved at the Board of Directors meeting held on December 18, 2025, to dispose of treasury stock pursuant to the post-delivery restricted stock unit system. The shares to be disposed of consist of 170,488 shares of the Company's common stock, at a disposal price of 19,450 yen per share, with a total disposal amount of 3,315,991,600 yen. The recipients are eight executive officers who do not concurrently serve as directors of the Company. The payment date is scheduled for February 2, 2026. This disposal is subject to the effectiveness of the securities registration statement under the Financial Instruments and Exchange Act.

Background and Purpose of Acquisition

This treasury stock disposal aims to provide incentives to recipients under the restricted stock remuneration system to promote the sustainable enhancement of corporate value and encourage value sharing with shareholders. For non-residents, this system is applied to ensure compliance with laws and regulations and to avoid tax disadvantages. The eight executive officers who do not serve concurrently as directors make payment in kind by contributing monetary claims as assets, and receive the Company’s common stock through this disposal. The payment amount is calculated based on the closing price of 19,450 yen on the Tokyo Stock Exchange Prime Market on December 17, 2025, and is neither a particularly favorable nor unreasonable amount.