-----BEGIN PRIVACY-ENHANCED MESSAGE----- Proc-Type: 2001,MIC-CLEAR Originator-Name: webmaster@www.sec.gov Originator-Key-Asymmetric: MFgwCgYEVQgBAQICAf8DSgAwRwJAW2sNKK9AVtBzYZmr6aGjlWyK3XmZv3dTINen TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB MIC-Info: RSA-MD5,RSA, DIhHW5Hx+arqykbvvmy+vVW4p6stbl8aleYqqmXqexH4T4Du+7GzeHYIXJ5w0TKu DrpbRETd1QXSQHRYRXi2MA== 0000734072-98-000074.txt : 19980123 0000734072-98-000074.hdr.sgml : 19980123 ACCESSION NUMBER: 0000734072-98-000074 CONFORMED SUBMISSION TYPE: SC 13G PUBLIC DOCUMENT COUNT: 1 FILED AS OF DATE: 19980122 SROS: NASD SUBJECT COMPANY: COMPANY DATA: COMPANY CONFORMED NAME: LAM RESEARCH CORP CENTRAL INDEX KEY: 0000707549 STANDARD INDUSTRIAL CLASSIFICATION: SPECIAL INDUSTRY MACHINERY, NEC [3559] IRS NUMBER: 942634797 STATE OF INCORPORATION: DE FISCAL YEAR END: 0630 FILING VALUES: FORM TYPE: SC 13G SEC ACT: SEC FILE NUMBER: 005-35859 FILM NUMBER: 98510558 BUSINESS ADDRESS: STREET 1: 4650 CUSHING PKWY CITY: FREMONT STATE: CA ZIP: 94538 BUSINESS PHONE: 5106590200 MAIL ADDRESS: STREET 1: 4650 CUSHING PARKWAY CITY: FREMONT STATE: CA ZIP: 94538 FILED BY: COMPANY DATA: COMPANY CONFORMED NAME: PIONEERING MANAGEMENT CORP /ADV CENTRAL INDEX KEY: 0000734072 STANDARD INDUSTRIAL CLASSIFICATION: UNKNOWN SIC - 0000 [0000] IRS NUMBER: 131961193 STATE OF INCORPORATION: DE FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: SC 13G BUSINESS ADDRESS: STREET 1: 60 STATE ST CITY: BOSTON STATE: MA ZIP: 02109 BUSINESS PHONE: 6177427825 MAIL ADDRESS: STREET 1: 60 STATE STREET, 20TH FLOOR CITY: BOSTON STATE: MA ZIP: 02109-1820 SC 13G 1 SCHEDULE 13G LAM RESEARCH SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 Under the Securities and Exchange Act of 1934 (Amendment No. 0 ) LAM RESEARCH (Name of Issuer) Common (Title of Class of Securities ) 512807108 (CUSIP NUMBER) 1) Name of Reporting SS or IRS Identification Pioneering Management Nos. of Above Persons Corporation 2) Check the Appropriate Box (a) of A Member of Group (See Instructions) (b) X 3) SEC Use Only 4) Citizenship of Place of Organization Number of (5) Sole Voting Power 2659000 Shares Beneficially Owned (6) Shared Voting Power 0 by Each Reporting Person With (7) Sole Dispositive 2659000 Power (8) Shared Dispositive 0 Power 9) Aggregate Amount Bene- 2659000 ficially Owned by Each Reporting Person 10) Check if the aggregate Amount in Row (9) Ex- clude Certain Shares (See Instructions) 11) Percent of Class Represented By Amount in Row 9. 7.04% 12) Type of Reporting Person (See Instructions) IA Item 1(a) Name of Issuer. LAM RESEARCH Item 1(b) Address of User's Principal Executive Office's Ms. Mercedes Johnson Chief Financial Officer LAM RESEARCH 4650 Cusing Parkway Fremont, CA 94538 Item 2(a) Name of Person Filing. Pioneering Management Corporation Item 2(b) Address of Principal Business Office: 60 State Street, Boston, MA 02109 Item 2(c) Citizenship: State Of Delaware - Pioneering Management Corporation. Item 2(d) Title of Class of Securities. Common Stock Item 2(e) CUSIP Number. 512807108 Item 3 The person filing this statement pursuant to Rule 13-1(b) or 13d-2 is: (a) Investment Adviser registered under Section 203 of the Investment Advisers Act of 1940. Item 4. Ownership (a) Amount Beneficially Owned 2659000 (b) Percent of Class 7.04% (c) Number of shares as to which such person has (i) sole power to vote or to direct the vote 2659000 (ii) shared power to vote or to direct vote 0 (iii) sole power to dispose or to direct disposition of 2659000 (iv) shared power to dispose or to direct disposition 0 Item 5. Ownership of Five Percent or Less of a Class. Inapplicable. Item 6. Ownership of More than Five Percent on Behalf of Another Person. Inapplicable. Item 7. Identification and Classification of the Subsidiary Which Acquired the Security Being Reported On By the Parent Holding Company. Inapplicable. Item 8. Identification and Classification of Members of the Group. Inapplicable. Item 9. Notice of Dissolution of the Group. Inapplicable. Item 10. Certification. By signing below I certify that, to the best of my 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 transactions having such purposes or effect. After reasonable inquiry and to the best of my knowledge and believe, I certify that the information set forth in this statement is true, complete and correct. January 21. 1998 Date /s/Robert P. Nault Signature Robert P. Nault Assistant Secretary Type Name and Title -----END PRIVACY-ENHANCED MESSAGE-----