根据《1934年证券交易法》第3号修正案，发行人名称:KLA TENCOR CORP _____________________________________________________证券类别名称:普通股CUSIP编号:482480100 1)I.R.S.姓名标识号:美国保诚保险公司22-1211670beplay官网ued一组的成员:(A) N / A (b) N / 3)秒只使用:4)组织:互助保险公司组织在国家法律的新泽西州的实益拥有的股份数量报告的人:5)唯一的投票权:486800见表6)共享投票权:471beplay官网ued3152见表7)唯一决定性的力量:486800看到展览8)共享处置权:5198752见表9)总金额实益拥有:见表10)总金额5685552行(9)不包括股票:不适用11)行类由量的百分比(9):6.72见表12)类型的报告的人:IC、IA项目1 (A)。发行人名称:KLA TENCOR CORP第1(b)项。发行人执行办公室地址:KLA TENCOR CORP 160里约热内卢Robles San Jose, CA 95161第2(a)项。个人姓名备案:美国保诚保险公司第2(b)项。beplay官网ued主要业务办公室地址:751 Broad Street Newark, New Jersey 07102-3777 ITEM 2(c)。公民身份:根据新泽西州第2(d)项法律成立的相互保险公司。beplay官网ued证券类别名称:普通股项目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.