<PAGE> 1
FILED PURSUANT TO RULE 424(b)(3)
REGISTRATION STATEMENT NO. 333-39167
PROSPECTUS SUPPLEMENT NO. 5
(TO PROSPECTUS DATED NOVEMBER 10, 1997)
$310,000,000
LAM RESEARCH CORPORATION
5% CONVERTIBLE SUBORDINATED NOTES DUE 2002
This Prospectus Supplement supplements information contained in that
certain Prospectus dated November 10, 1997, Prospectus Supplement No. 1 to such
Prospectus dated January 27, 1998, Prospectus Supplement No. 2 to such
Prospectus dated March 20, 1998, Prospectus Supplement No. 3 to such Prospectus
dated May 14, 1998, and Prospectus Supplement No. 4 to such Prospectus dated
July 28, 1998 (collectively, the "Prospectus"), each relating to the potential
sale from time to time of up to $310,000,000 aggregate amount of Notes and the
Common Stock issuable upon conversion thereof by the Selling Securityholders.
This Prospectus Supplement is not complete without, and may not be delivered or
utilized except in connection with, the Prospectus. Capitalized terms used
herein but not defined have the meanings assigned to such terms in the
Prospectus.
The following information shall be added in the appropriate alphabetical
sequence to the table set forth in the Prospectus under the caption "Selling
Securityholders" with respect to the Selling Securityholders and the respective
principal amounts of Registrable Notes beneficially owned by such Selling
Securityholder that may be offered pursuant to the Prospectus, as amended or
supplemented:
<TABLE>
<S> <C> <C>
Smith Barney, Inc.................................... 1,365,000* 15,552*
</TABLE>
The following line items contained in the table set forth in the Prospectus
under the caption "Selling Securityholders" shall be deleted in their entirety:
<TABLE>
<S> <C> <C>
KA Management, LTD................................... 847,529* 9,656*
KA Trading, LP....................................... 417,471* 4,756*
McMahan Securities Company, L.P...................... 50,000* 569*
</TABLE>
The line items "Deutsche Morgan Grenfell, Inc., 4,980,000, 1.61%, 56,739,
*", and "Nesbitt Burns, 1,225,000, *, 13,958, *" contained in the table set
forth in the Prospectus under the caption "Selling Securityholders" shall be
deleted in their entirety and replaced with the following:
<TABLE>
<S> <C> <C>
Deutsche Morgan Grenfell, Inc........................ 1,840,000* 20,963*
Nesbitt Burns........................................ 1,187,000* 13,523*
</TABLE>
The last three line items contained in the table set forth in the
Prospectus under the caption "Selling Securityholders": "Any other holder . . .
", "Notes Sold Under Registration Statement", and "Total . . . " (other than the
footnotes thereto which remain unchanged), shall be deleted in their entirety
and replaced with the following:
Any other holder of Notes or future transferee from any such holder (3)
<TABLE>
<S> <C> <C> <C>
Notes Sold Under Registration Statement...... $212,948,000 2,426,204
Total.............................. $310,000,000 100% 3,531,958
</TABLE>
All information provided in this Prospectus Supplement is as of September 15,
1998.
THE DATE OF THIS PROSPECTUS SUPPLEMENT IS SEPTEMBER 15, 1998.
