Exhibit 99.4 FOR IMMEDIATE RELEASE June 27, 2006 ADVANTEST CORPORATION (Toshio Maruyama, President and CEO) (Stock Code Number: 6857, TSE first section) (Ticker Symbol: ATE, NYSE) CONTACT: Yuri Morita (Managing Executive Officer and Senior Vice President, Corporate Affairs Group) Phone: +81-(0)3-3214-7500 Advantest Issues Stock Option (Stock Acquisition Rights) to Directors and Corporate Auditors Tokyo -June 27, 2006 - Advantest Corporation (the "Company") resolved at a meeting of its Board of Directors today to issue stock options in the form of stock acquisition rights pursuant to Articles 236, 238 and 240 of the Company Law under the terms set forth below. 1. Reason for issuance of the The Company issues stock acquisition rights to stock acquisition rights as improve performance and morale of directors stock options of the Company, and corporate auditors' awareness of proper auditing at the Company. In this manner, the Company aims to promote a management style conscious of increasing shareholder value and to attract and retain outstanding personnel. 2. Date of allocation July 12, 2006 3. Number of stock acquisition 1,800 rights allocated 4. Issuance price Issuance price shall be fair value of the stock options computed pursuant to the Black Sholes model on the date of allocation as set forth in 2 above. Issuance price shall be paid by setting off against the monetary compensation in the amount equal to such fair value and to be paid by the Company pursuant to Article 246, Paragraph 2 of the Company Law. 5. Class and total number of 180,000 shares of common stock of Advantest shares underlying the stock Corporation (each stock acquisition right acquisition rights shall be exercisable for 100 shares) 6. Total subscription price To be determined as of July 12, 2006 to be paid upon 1 exercise of each stock acquisition right 7. The total value of all To be determined as of July 12, 2006 shares (newly issued shares or treasury shares) issued or delivered upon the exercise of stock acquisition rights 8. Exercise period of the Between April 1, 2007 and March 31, 2011 stock acquisition rights 9. Conditions for exercise of (a) The stock options may not be inherited. stock options (b) Each stock option may not be exercised in part. (c) When the number of shares deliverable upon exercise of the stock options includes less than one unit, the exercising Stock Option Holder (as defined below) shall be deemed to have requested the Company to purchase such shares pursuant to Article 192, Paragraph 1 of the Company Law. The determination of whether the number of shares deliverable upon exercise includes less than one unit shall be made by taking into account the aggregate number of shares deliverable upon each exercise of one or more stock options. 10 The Company's acquisition The Company shall automatically acquire the of the stock acquisition stock acquisition rights, for no consideration, rights if: (a) the general meeting of shareholders resolves to approve (if approval by the shareholders' meeting is not legally required, then the Board of Directors may approve) (i) any merger agreement pursuant to which the Company shall dissolve, (ii) any agreement or a plan pursuant to which the Company shall split all or part of its business or (iii) any stock-for-stock exchange agreement or stock-transfer plan pursuant to which the Company shall become a wholly-owned subsidiary of another company; (b) a person holding stock acquisition rights (a "Stock Option Holder") no longer holds the position of a director, corporate auditor, executive officer, employee or any other similar position of the Company or its domestic and overseas subsidiaries, except where the Company deems that it is appropriate to allow him/her to exercise his/her stock options and notifies him/her; (c) a Stock Option Holder dies; (d) a Stock Option Holder submits a prescribed form of the Company to waive all or part of his stock acquisition rights to the Company; 2 (e) a Stock Option Holder becomes a director, corporate auditor, executive officer or employee of a company that competes with the Company and the Company notifies the Stock Option Holder that his/her stock options are non-exercisable; or (f) a Stock Option Holder is in violation of laws and regulations or internal rules and other regulations of the Company, or breaches the stock option agreement entered into between such Stock Option Holder and the Company. The Company is required to notify the Stock Option Holder that his/her stock options are non-exercisable. The Representative Director may decide in his/her sole discretion whether exercise by a Stock Option Holder of the stock options is reasonable (as in item (b) above) and whether a Stock Option Holder's options are non-exercisable (as in item (e) and (f) above). 11. Restriction on the transfer Approval by the Board of Directors is required of the stock acquisition upon a transfer of the stock acquisition rights rights, except where the Company is the transferee with respect to such transfer. 12. Matters concerning the (a) The amount of capital increased by the amount of capital and the issue of the shares upon exercise of the stock additional paid-in capital acquisition rights shall be the amount equal increased by the issuance to one-half of the maximum limit of capital of shares upon exercise of increase, as calculated in accordance the stock acquisition with Article 40, Paragraph 1 of the Company rights Accounting Regulation (kaisha keisan kisoku), and any fraction less than one (1) yen arising as a result of such calculation shall be rounded up to the nearest one (1) yen (to be determined as of July 12, 2006). (b) The amount of additional paid-in capital increased by the issue of the shares upon exercise of the stock acquisition rights shall be the amount obtained by subtracting the capital to be increased, as provided in the sub-paragraph (a) above, from the maximum limit of capital increase, as also provided in the sub-paragraph (a) above. 13. The number of directors Directors and corporate auditors of the and corporate auditors Company, totaling 13 receiving stock acquisition rights For Reference (1) The date of the meeting May 26, 2006 of the Board of Directors setting the date for the annual 3 general meeting of shareholders (2) Date of the resolution June 27, 2006 made pursuant to the annual general meeting of shareholders