Notice Regarding the Status of Treasury Stock Acquisition (Treasury Stock Acquisition Based on the Provisions of Article 459, Paragraph 1 of the Companies Act)

Overview of Treasury Stock Acquisition

Advantest Corporation acquired 446,000 shares of its common stock through market purchases on the Tokyo Stock Exchange from March 1 to March 31, 2026, at a total acquisition cost of 10,435,051,000 yen (excluding brokerage commissions). This acquisition is part of the treasury stock acquisition resolved by the Board of Directors on October 28, 2025, with a total authorized acquisition of up to 18 million shares, a maximum acquisition cost limit of 150 billion yen, and an acquisition period from November 4, 2025 through October 28, 2026.

Progress of Acquisition Status and Future Outlook

As of March 31, 2026, the cumulative number of shares acquired totaled 2,048,700 shares, with a cumulative acquisition cost of 44,228,372,000 yen (excluding brokerage commissions). The Company intends to continue acquiring treasury stock within the defined period. However, forward-looking statements include the possibility that actual financial conditions and activities may differ due to future events.