Item 8.01. Other Events.

On August 23, 2006, ADE Corporation, or ADE, extended from August 28, 2006 to November 10, 2006 the "end date" under the Amended and Restated Merger Agreement between ADE and KLA-Tencor Corporation, or KLA-Tencor. Unless the merger has been completed by such date or such date is further extended by mutual agreement of ADE and KLA-Tencor, either party may thereafter terminate the Merger Agreement. ADE extended this date to November 10 to allow KLA-Tencor additional time to obtain regulatory clearance from German antitrust authorities, who as previously reported, notified KLA-Tencor on Monday, July 10, 2006 of the commencement of a Phase II investigation of the proposed merger.

A closing date will be established once the parties have cleared or waived all conditions to close, including regulatory clearance from the German antitrust authorities. Both ADE and KLA-Tencor continue to be confident that the merger will be completed once German antitrust clearance is obtained.

Cautionary Statement Regarding Forward-Looking Statements

This Current Report on Form 8-K contains certain forward-looking statements within the meaning of the “safe harbor” provisions of the United States Private Securities Litigation Reform Act of 1995 and federal securities law. Such forward-looking statements are subject to known and unknown risks and uncertainties that could cause actual results to differ materially from those expressed or implied by such statements. Those statements that make reference to expectations, predictions, beliefs and assumptions should be considered forward-looking statements. These statements include, but are not limited to, those associated with the expected closing time for the proposed merger and obtaining clearance from German antitrust authorities. These statements involve risks and uncertainties including those associated with delays in obtaining, or adverse conditions contained in, the German antitrust authorities’ regulatory approvals; failure to consummate or delays in consummating the proposed merger for other reasons; changes in laws or regulations; and other similar factors. Further information on potential factors that could affect ADE’s business is contained in its reports on file with the Securities and Exchange Commission, including its Annual Report on Form 10-K. ADE is under no obligation to (and expressly disclaims any such obligation to) update or alter its forward-looking statements whether as a result of new information, future events or otherwise.