SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 6)* KLA -Tencor Corporation (Name of Issuer) Common Stock (Title of Class of Securities) 482480100 (CUSIP Number) October 2, 2002 (Date of Event Which Requires Filing of This Statement) Check the appropriate box to designate the rule pursuant to which this Schedule is filed: [ ] Rule 13d-1(b) [X] Rule 13d-1(c) [ ] Rule 13d-1(d) *The remainder of this cover page shall be filled out for a reporting person's initial filing on this form with respect to the subject class of securities, and for any subsequent amendment containing information which would alter the disclosures provided in a prior cover page. The information required in the remainder of this cover page shall not be deemed to be "filed" for the purpose of Section 18 of the Securities Exchange Act of 1934 ("Act") or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act (however, see the Notes). CUSIP: 482480100 Page 1 of 7 1 NAMES OF REPORTING PERSONS I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY) Capital Group International, Inc. 95-4154357 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (SEE INSTRUCTIONS) (a) (b) 3 SEC USE ONLY 4 CITIZENSHIP OR PLACE OF ORGANIZATION California 5 SOLE VOTING POWER 21,121,770 6 SHARED VOTING POWER NUMBER OF SHARES NONE BENEFICIALL Y OWNED BY 7 SOLE DISPOSITIVE POWER EACH REPORTING 24,024,930 PERSON WITH: 8 SHARED DISPOSITIVE POWER NONE 9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 24,024,930 Beneficial ownership disclaimed pursuant to Rule 13d-4 10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS) 11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9 12.7% 12 TYPE OF REPORTING PERSON (SEE INSTRUCTIONS) HC CUSIP: 482480100 Page 2 of 7 1 NAMES OF REPORTING PERSONS I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY) Capital Guardian Trust Company 95-2553868 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (SEE INSTRUCTIONS) (a) (b) 3 SEC USE ONLY 4 CITIZENSHIP OR PLACE OF ORGANIZATION California 5 SOLE VOTING POWER 9,523,340 6 SHARED VOTING POWER NUMBER OF SHARES NONE BENEFICIALL Y OWNED BY 7 SOLE DISPOSITIVE POWER EACH REPORTING 12,426,500 PERSON WITH: 8 SHARED DISPOSITIVE POWER NONE 9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 12,426,500 Beneficial ownership disclaimed pursuant to Rule 13d-4 10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS) 11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9 6.6% 12 TYPE OF REPORTING PERSON (SEE INSTRUCTIONS) CO CUSIP: 482480100 Page 3 of 7 证券交易委员会华盛顿20549 Schedule 13G Under the Securities Exchange Act of 1934 Amendment No. 6 Item 1(a) Name of issuer: KLA -Tencor Corporation Item 1(b) Address of issuer's principal executive offices: 160 Rio Robles San Jose, CA 95134 Item 2(a) Name of person(s) filing: Capital Group International, Inc. and Capital Guardian Trust Company Item 2(b) Address or principal business office or, if none, residence: 11100 Santa Monica Blvd. Los Angeles, CA 90025 Item 2(c) Citizenship: N/A Item 2(d) Title of class of securities: Common Stock Item 2(e) CUSIP No.: 482480100 Item 3 If this statement is filed pursuant to sections 240.13d-1(b) or 240.13d-2(b) or (c), check whether the person filings is a: N/A Item 4 Ownership Provide the following information regarding the aggregate number and percentage of the class of securities of the issuer identified in Item 1. See pages 2 and 3 (a) Amount beneficially owned: (b) Percent of class: (c) Number of shares as to which the person has: (i) Sole power to vote or to direct the vote: (ii) Shared power to vote or to direct the vote: (iii) Sole power to dispose or to direct the disposition of: (iv) Shared power to dispose or to direct the disposition of: CUSIP: 482480100 Page 4 of 7 首都集团国际公司，Inc。是一批投资管理公司的母公司，该公司拥有投资权力，在某些情况下，在本附表13G报告的证券beplay官网ued上投票权力。1934年“证券交流法”第3（a）条第3（a）条第3（A）条（法案“）和1940年投资顾问法案第203条登记的几项投资顾问（1940年）提供的”银行“（第3章）提供其各自客户的投资咨询和管理服务，包括注册投资公司和机构账户。资本集团国际，INC。没有投资权力或投票权给出任何证券;但是，首都集团国际公司，公司可能被认为是“有益地拥有”这样的证券，凭借在该法案下的第13D-3条。资本监护人信托公司，第3（a）条第3（a）条的beplay官网ued银行被认为是12,426,500股的有益所有人，占189,114,000股普通股的6.6％被认为是其服务各种机构账户的投资经理。第5项5％或更少的所有权。如果正在提交本声明以报告截至目的，截至本报告人已不再是超过5％的证券的有益所有人，请查看以下内容：[]项目6超过5的所有权百分比代表另一个人：N / A项目7附属公司的识别和分类，该子公司收购了母公司控股公司或控制人士报告的安全。beplay官网ued1. Capital Guardian Trust Company (CGTC) 2. Capital International Limited (CIL) 3. Capital International S.A. (CISA) 4. Capital International Research and Management, Inc. dba Capital International, Inc. (CII) Item 8 Identification and Classification of Members of the Group: N/A Item 9 Notice of Dissolution of Group: N/A Item 10 Certification By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect. CUSIP: 482480100 Page 5 of 7 Signature After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct. Date: October 10, 2002 Signature: *David I. Fisher Name/Title: David I. Fisher, Chairman Capital Group International, Inc. Date: October 10, 2002 Signature: *David I. Fisher Name/Title: David I. Fisher, Chairman Capital Guardian Trust Company *By /s/ Michael J. Downer Michael J. Downer Attorney-in-fact Signed pursuant to a Power of Attorney dated December 19, 2000 included as an Exhibit to Schedule 13G filed with the Securities and Exchange Commission by Capital Group International, Inc. on February 9, 2001 with respect to Abitibi-Consolidated Inc. CUSIP: 482480100 Page 6 of 7 AGREEMENT Los Angeles, CA October 10, 2002 Capital Group International, Inc. ("CGII") and Capital Guardian Trust Company ("CGTC") hereby agree to file a joint statement on Schedule 13G under the Securities Exchange Act of 1934 (the "Act") in connection with their beneficial ownership of Common Stock issued by KLA -Tencor Corporation. CGII and CGTC state that they are each entitled to individually use Schedule 13G pursuant to Rule 13d-1(c) of the Act. CGII and CGTC are each responsible for the timely filing of the statement and any amendments thereto, and for the completeness and accuracy of the information concerning each of them contained therein but are not responsible for the completeness or accuracy of the information concerning the others. CAPITAL GROUP INTERNATIONAL, INC. BY: *David I. Fisher David I. Fisher, Chairman Capital Group International, Inc. CAPITAL GUARDIAN TRUST COMPANY BY: *David I. Fisher David I. Fisher, Chairman Capital Guardian Trust Company *By /s/ Michael J. Downer Michael J. Downer Attorney-in-fact Signed pursuant to a Power of Attorney dated December 19, 2000 included as an Exhibit to Schedule 13G filed with the Securities and Exchange Commission by Capital Group International, Inc. on February 9, 2001 with respect to Abitibi-Consolidated Inc. CUSIP: 482480100 Page 7 of 7