425

Filed by Orbotech Ltd.

Pursuant to Rule 425 under the Securities Act of 1933

Subject Company: Orbotech Ltd.

Commission File No.: 000-12790

May 11, 2018

Amendment to Merger Agreement

On May 11, 2018, KLA-Tencor Corporation (“KLA-Tencor”), Orbotech Ltd. (“Orbotech”) and Tiburon Merger Sub Technologies Ltd. (“Merger Sub”) entered into Amendment No. 1 (the “Amendment”) to the Agreement and Plan of Merger dated as of March 18, 2018 (the “Merger Agreement”). The Amendment: (i) clarified that the Excluded Shares (as defined below) would remain outstanding through the effective time of the merger, (ii) provided that Merger Sub (and, as a result of the merger, the surviving company) may be a wholly owned direct or indirect subsidiary of KLA-Tencor, and (iii) contained an acknowledgment that the confirmation received from the Israeli Investment Center of the Israeli Ministry of Economy (the “Investment Center”) that the approval of the Investment Center is not required with respect to the change in ownership of the Company to be effected by the merger was sufficient to satisfy a closing condition in the Merger Agreement relating to Investment Center approval, unless such confirmation is revoked withdrawn, or amended by the Investment Center prior to the closing of the merger. In the Amendment, “Excluded Shares” include Orbotech ordinary shares held in the treasury of Orbotech, reserved for future grants under Orbotech’s employee and director equity compensation plans, owned on behalf of Orbotech by the trustee appointed by Orbotech from time to time in accordance with the provisions of the Israeli Income Tax Ordinance [New Version], 1961 or held by KLA-Tencor or any direct or indirect wholly-owned subsidiary of Orbotech or KLA-Tencor.

Antitrust Clearance in Germany

On May 9, 2018, the German Federal Cartel Office provided antitrust clearance for the proposed merger with KLA-Tencor.

Cautionary Statement Regarding Forward-Looking Statements

This communication contains forward-looking statements as defined in the Securities Exchange Act of 1934 and is subject to the safe harbors created therein. These forward-looking statements involve risks and uncertainties that could significantly affect the expected results of the proposed transaction and are based on certain key assumptions. Due to such uncertainties and risks, no assurances can be given that such expectations will prove to have been correct, and readers are cautioned not to place undue reliance on such forward-looking statements, which speak only as of the date hereof. The forward-looking statements contained herein include, but are not limited to, the manner in which the parties plan to effect the transaction, including the share repurchase program; the ability of KLA-Tencor to raise additional capital necessary to complete the repurchase program within the time frame expected; the expected benefits, synergies and costs of the transaction; management plans relating to the transaction, including with respect to Orbotech’s ownership interest in Frontline P.C.B. Solutions Limited Partnership; the expected timing of the completion of the transaction; the parties’ ability to complete the transaction considering the various closing conditions, including conditions related to regulatory and Orbotech shareholder approvals; the plans, strategies and objectives of management for future operations; product development, product extensions, product integration, complementary product offerings and growth opportunities in certain business areas; the potential future financial impact of the transaction; and any assumptions underlying any of the foregoing. Actual results may differ materially from those referred to in the forward-looking statements due to a number of important factors, including but not limited to the possibility that expected benefits of the transaction may not materialize as expected; that the transaction may not be timely completed, if at all; or that KLA-Tencor may not be able to successfully integrate the solutions and employees of the two companies or ensure the continued performance or growth of Orbotech’s products or solutions.


In addition, other risks that KLA-Tencor faces include those detailed in KLA-Tencor’s filings with the Securities and Exchange Commission, including KLA-Tencor’s annual report on Form 10-K for the year ended June 30, 2017 and quarterly reports on Form 10-Q for the quarters ended December 31, 2017 and March 31, 2017, respectively. Other risks that Orbotech faces include those detailed in Orbotech’s filings with the Securities and Exchange Commission, including Orbotech’s annual report on Form 20-F for the year ended December 31, 2017.

Additional Information and Where to Find It

This communication is being made in respect of a proposed business combination involving KLA-Tencor and Orbotech. This communication does not constitute an offer to sell or the solicitation of an offer to buy or subscribe for any securities or a solicitation of any vote or approval nor shall there be any sale, issuance or transfer of securities in any jurisdiction in which such offer, solicitation, sale, issuance or transfer would be unlawful prior to registration or qualification under the securities laws of any such jurisdiction. The proposed transaction will be submitted to the shareholders of Orbotech for their consideration. KLA-Tencor intends to file with the SEC a Registration Statement on Form S-4 that will include a preliminary prospectus with respect to KLA-Tencor’s common stock to be issued in the proposed transaction and a proxy statement of Orbotech in connection with the merger of an indirect subsidiary of KLA-Tencor with and into Orbotech, with Orbotech surviving. The information in the preliminary proxy statement/prospectus is not complete and may be changed. KLA-Tencor may not sell the common stock referenced in the proxy statement/prospectus until the Registration Statement on Form S-4 filed with the SEC becomes effective. The proxy statement/prospectus will be provided to the Orbotech shareholders. KLA-Tencor and Orbotech also plan to file other documents with the SEC regarding the proposed transaction.

This communication is not a substitute for any prospectus, proxy statement or any other document that KLA-Tencor or Orbotech may file with the SEC in connection with the proposed transaction. Investors and security holders of KLA-Tencor and Orbotech are urged to read the proxy statement/prospectus and any other relevant documents that will be filed with the SEC carefully and in their entirety when they become available because they will contain important information about the proposed transaction.

You may obtain copies of all documents filed with the SEC regarding this transaction, free of charge, at the SEC’s website (www.sec.gov). In addition, investors and security holders will be able to obtain free copies of the proxy statement/prospectus (when they become available) and other documents filed with the SEC by KLA-Tencor on KLA-Tencor’s Investor Relations page (ir.kla-tencor.com) or by writing to KLA-Tencor Corporation, Investor Relations, 1 Technology Drive, Milpitas, CA 95035 (for documents filed with the SEC by KLA-Tencor), or by Orbotech on Orbotech’s Investor Relations page (investors.Orbotech.com) or by writing to Orbotech Ltd., Investor Relations, 7 Sanhedrin Boulevard, North Industrial Zone, Yavne 8110101 Israel (for documents filed with the SEC by Orbotech).