<PAGE> 1
PROSPECTUS SUPPLEMENT FILED PURSUANT TO RULE 424(b)(4)
TO PROSPECTUS DATED JULY 1, 1999 REGISTRATION NO. 333-80611
$345,000,000
LSI LOGIC CORPORATION
4 1/4% CONVERTIBLE SUBORDINATED NOTES DUE 2004
AND SHARES OF COMMON STOCK
This prospectus supplement relates to the resale by the selling
securityholders of 4 1/4% convertible subordinated notes due 2004 of LSI Logic
Corporation and the shares of common stock, par value of $0.01 per share, of LSI
Logic Corporation issuable upon the conversion of the notes.
This prospectus supplement should be read in conjunction with the
prospectus dated July 1, 1999, and the prospectus supplements dated July 22,
1999, August 23, 1999, October 4, 1999, November 9, 1999, December 10, 1999, and
March 23, 2000, which are to be delivered with this prospectus supplement. All
capitalized terms used but not defined in the prospectus supplement shall have
the meanings given them in the prospectus.
The table below sets forth information as of the date hereof concerning
beneficial ownership of the notes of the selling securityholders as listed
below. All information concerning beneficial ownership has been furnished by the
selling securityholders.
<TABLE>
<CAPTION>
PRINCIPAL AMOUNT
OF NOTES PERCENTAGE OF NUMBER OF SHARES PERCENTAGE OF
BENEFICIALLY OWNED NOTES OF COMMON STOCK COMMON STOCK
NAME THAT MAY BE SOLD OUTSTANDING THAT MAY BE SOLD(1) OUTSTANDING (2)
- ---- ------------------ ------------- ------------------- ---------------
<S> <C> <C> <C> <C>
Colgate-Palmolive Company Retirement Trust $1,250,000 * 79,737 *
Julius Baer Securities 500,000 * 31,895 *
Pell Rudman Trust Company 1,395,000 * 88,987 *
</TABLE>
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* Less than 1%
(1) Assumes conversion of the full amount of notes held by such holder at the
conversion price of $15.6765 per share (adjusted from the initial
conversion price of $31.353, pursuant to a two-for-one stock split
effective February 4, 2000 and distributed on February 16, 2000); such
conversion price is subject to adjustment as described under "Description
of Notes -- Conversion of Notes." Accordingly, the number of shares of
common stock issuable upon conversion of the Notes may increase or decrease
from time to time. Under the terms of the Indenture, fractional shares will
not be issued upon conversion of the notes; cash will be paid in lieu of
fractional shares, if any.
(2) Computed in accordance with Rule 13d-3(d)(i) promulgated under the Exchange
Act and based upon 306,632,229 shares of common stock outstanding as of
April 27, 2000, treating as outstanding the number of shares of common
stock shown as being issuable upon the assumed conversion by the named
holder of the full amount of such holder's notes but not assuming the
conversion of the notes of any other holder.
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THE SECURITIES OFFERED HEREBY INVOLVE A HIGH DEGREE OF RISK. SEE "RISK
FACTORS" BEGINNING ON PAGE 7 OF THE PROSPECTUS.
THESE SECURITIES HAVE NOT BEEN APPROVED OR DISAPPROVED BY THE
SECURITIES AND EXCHANGE COMMISSION NOR HAS THE SECURITIES
AND EXCHANGE COMMISSION OR ANY STATE SECURITIES COM-
MISSION PASSED UPON THE ACCURACY OR ADEQUACY OF
THIS PROSPECTUS. ANY REPRESENTATION TO THE
CONTRARY IS A CRIMINAL OFFENSE.
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The date of this Prospectus Supplement is April 28, 2000.
