Securiities和Exchange委员会华盛顿州，D.C.20549根据“证券交易所”的第1934号修正案第13克附表13克发行人名称：KLA Tencor Corp _______________________________________________标题：普通股：482480100 1）I.R.S的名称。身份证号码。报告人员审理美国22-1211670 2.）一组成员：（a）N / A（b）n / a 3beplay官网ued）秒仅使用：4）组织地点：互保险公司组织新泽西州的股票股东股份的股票股份：5）唯一投票权：486,800见展览A 6）共享投票权：4,713,152见展出A 7）鞋底分数幂：486,800见展出8）共享分数：5,198,752参见展览A 9）汇总金额有利所拥有的总额：5,685,552参见展出10）行（9）的总金额不包括股份：不适用11）股（9）金额所代表的班级（9）：6.72见展览A 12）报告人员类型：IC，IA项目1（a）。发行人姓名：KLA Tencor Corp项目1（b）。发行人的执行办公室地址：KLA Tencor Corp 160 Rio Robles San Jose，CA 95161第2项（A）。人员申请名称：美国审慎保险公司第2（b）项。beplay官网ued主营商务办公室的地址：751 Broad Street Newark，新泽西州07102-3777第2（c）项。 CITIZENSHIP: A mutual insurance company organized under the laws of the State of New Jersey ITEM 2(d). TITLE OF CLASS OF SECURITIES: Common Stock ITEM 2(e). CUSIP NUMBER: 482480100 ITEM 3. The Person filing this statement is an Insurance Company as defined in Section 3(a) (19) of the Securities Exchange Act of 1934, and an Investment Adviser registered under Section 203 of the Investment Advisers Act of 1940. ITEM 4. OWNERSHIP: (a) Number of Shares Beneficially Owned: 5,685,552 See Exhibit A (b) Percent of Class: 6.72 Number (c) Powers Of Shares - ------------------------------------- -------------------------- Sole power to vote or 486,800 See Exhibit A to direct the vote Shared power to vote or 4,713,152 See Exhibit A to direct the vote Sole power to dispose or 486,800 See Exhibit A to direct disposition Shared power to dispose 5,198,752 See Exhibit A or to direct disposition ITEM 5. OWNERSHIP OF 5% OR LESS OF A CLASS: Not Applicable ITEM 6. OWNERSHIP OF MORE THAN 5% ON BEHALF OF ANOTHER PERSON: See Exhibit A ITEM 7. IDENTIFICATION AND CLASSIFICATION OF THE SUBSIDIARY WHICH ACQUIRED THE SECURITY BEING REPORTED ON BY THE ULTIMATE PARENT COMPANY: Not Applicable ITEM 8. IDENTIFICATION AND CLASSIFICATION OF MEMBERS OF THE GROUP: Not Applicable ITEM 9. NOTICE OF DISSOLUTION OF GROUP: Not Applicable ITEM 10. CERTIFICATION: By signing below, the Prudential Insurance Company of America certifies that, to the best of its knowledge and belief, the securities referred to above were acquired in the ordinary course of business and were not acquired for the purpose of and do not have the effect of changing or influencing the control of the issuer of such securities and were not acquired in connection with or as a participant in any transaction having such purpose or effect. The filing of this statement should not be construed as an admission that Prudential is, for purposes of Sections 13 or 16 of the Securities Exchange Act of 1934, the beneficial owner of such shares. SIGNATURE After reasonable inquiry and to the best of its knowledge and belief, The Prudential Insurance Company of America certifies that the information set forth in this statement is true, complete and correct. THE PRUDENTIAL INSURANCE COMPANY OF AMERICA By: Karen L. Shapiro Vice President, Corporate Compliance Date: 02/10/98 As of: 12/31/96 Exhibit A -------------- ITEM 6. OWNERSHIP: The Prudential Insurance Company of America ('Prudential') presently holds 22,400 shares of Issuer's common stock for the benefit of its general account. In addition, Prudential may have direct or indirect voting and/or investment discretion over 5,663,152 shares which are held for the benefit of its clients by its separate accounts, externally managed accounts, registered investment companies, subsidiaries and/or other affiliates. Prudential is reporting the combined holdings of these entities for the p urpose of administrative convenience. These shares were acquired in the ordinary course of business, and not with the purpose or effect of changing or influencing control of the Issuer. The filing of this statement should not be construed as an admission that Prudential is, for the purposes of Sections 13 or 16 of the Securities Exchange Act of 1934, the beneficial owner of these shares.