<PAGE> 1
FILED PURSUANT TO RULE 424(b)(3)
REGISTRATION STATEMENT NO. 333-52463
PROSPECTUS SUPPLEMENT NO. 8
TO
PROSPECTUS DATED AUGUST 11, 1998
WESTERN DIGITAL CORPORATION
ZERO COUPON CONVERTIBLE SUBORDINATED DEBENTURES DUE 2018
AND SHARES OF COMMON STOCK ISSUABLE UPON CONVERSION THEREOF
------------------------
The following information supplements, and must be read in connection with,
the information contained in the Prospectus, dated August 11, 1998 as
supplemented by Prospectus Supplement No. 1 dated September 2, 1998, Prospectus
Supplement No. 2 dated October 29, 1998, Prospectus Supplement No. 3 dated
December 21, 1998, Prospectus Supplement No. 4 dated February 4, 1999,
Prospectus Supplement No. 5 dated February 10, 1999, Prospectus Supplement No. 6
dated March 30, 1999 and Prospectus Supplement No. 7 dated May 6, 1999 (the
"Prospectus"), of Western Digital Corporation, a Delaware corporation. This
Prospectus Supplement must be delivered with a copy of the Prospectus. All
capitalized terms not otherwise defined herein have the respective meanings
ascribed to them in the Prospectus.
The following information replaces in its entirety the information provided
in the Prospectus under the caption "Selling Securityholders."
------------------------
SELLING SECURITYHOLDERS
The following table sets forth information as of July 28, 1999, with
respect to the Selling Securityholders, the respective principal amount of
Debentures beneficially owned by each Selling Securityholder, the principal
amount of Debentures offered hereby by each Selling Securityholder, the Common
Stock owned by each Selling Securityholder and the Common Stock issued or
issuable upon conversion of such Debentures, that may be sold from time to time
pursuant to this Prospectus. The Debentures and the Common Stock issued or
issuable upon conversion of such Debentures that may be offered pursuant to this
Prospectus will be offered by the Selling Securityholders.
<TABLE>
<CAPTION>
PRINCIPAL AMOUNT
OF DEBENTURES PERCENT OF TOTAL COMMON STOCK COMMON STOCK
BENEFICIALLY OWNED OUTSTANDING OWNED PRIOR REGISTERED HEREBY
SELLING SECURITYHOLDERS AND OFFERED HEREBY DEBENTURES(1) TO CONVERSION (2)
----------------------- ------------------- ---------------- ------------------- -----------------
<S> <C> <C> <C> <C>
Aim Charter Fund................... $ 40,000,000 3 -- 597,400
Aim V.I. Growth and Income Fund.... 10,000,000 * -- 149,350
Aldebaran SAL...................... 60,000 * -- 896
Alta Partners Holdings, LDC........ 15,500,000 1 -- 231,492
Alutrade International SA.......... 600,000 * -- 8,961
American Stores.................... 2,000,000 * -- 29,870
Argent Classic Convertible
Arbitrage Fund (Bermuda) L.P. ... 28,500,000 2 -- 425,647
Argent Classic Convertible
Arbitrage Fund L.P. ............. 15,000,000 1 -- 224,025
Argent Offshore Fund L.P........... 7,600,000 * -- 113,506
Baltimore Gas & Electric........... 2,000,000 * -- 29,870
BancBoston Robertson Stephens...... 2,000,000 * -- 29,870
Bear Stearns Securities Corp. ..... 214,550,000 17 -- 3,204,304
Bell Atlantic Master Trust......... 1,600,000 * -- 23,896
</TABLE>
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<TABLE>
<CAPTION>
PRINCIPAL AMOUNT
OF DEBENTURES PERCENT OF TOTAL COMMON STOCK COMMON STOCK
BENEFICIALLY OWNED OUTSTANDING OWNED PRIOR REGISTERED HEREBY
SELLING SECURITYHOLDERS AND OFFERED HEREBY DEBENTURES(1) TO CONVERSION (2)
----------------------- ------------------- ---------------- ------------------- -----------------
<S> <C> <C> <C> <C>
Black Diamond Ltd. ................ $ 5,491,000 * 47,170 82,008
Black Diamond Partners, L.P. ...... 5,249,000 * -- 78,393
Bonannay Investments Limited....... 100,000 * -- 1,493
Boston College Endowment Fund...... 542,000 * -- 8,094
BT Holdings........................ 11,000,000 * -- 164,285
Buffalo Balanced Fund, Inc. ....... 2,000,000 * -- 29,870
Buffalo High Yield Fund, Inc. ..... 2,000,000 * -- 29,870
Business Investment Organisation
Co. Ltd. -- metal a/c............ 280,000 * -- 4,181
Canadian Imperial Holdings Inc. ... 22,500,000 2 -- 336,037
Carrigaholt Capital (Bermuda)
L.P. ............................ 2,500,000 * -- 37,337
Century National Insurance
Company.......................... 2,180,000 * -- 32,558
CFW-C, L.P. ....................... 30,000,000 2 -- 448,050
Chapin Carpenter, Mary............. 25,000 * -- 373
Charles Schwab Trust Company....... 240,000 * -- 3,584
Chrysler Insurance Company -- Total
Return........................... 70,000 * -- 1,045
CIBC Oppenheimer Corp.............. 19,000,000 1 -- 283,765
City of Richmond, Virginia......... 225,000 * -- 3,360
City of Worcester, Massachusetts... 400,000 * -- 5,974
Class IC Company, Ltd., The........ 2,500,000 * -- 37,337
Collins US Premier Equity Trust.... 250,000 * -- 3,733
Colonial Penn Life Insurance
Co. ............................. 500,000 * -- 7,467
Commonwealth Life Insurance Comp.
(Teamsters -- Camden Non-
Enhanced)........................ 5,000,000 * -- 74,675
Connell, Eileen M.................. 40,000 * -- 597
Corbel Investments, Ltd. .......... 400,000 * -- 5,974
Corporate Investment Services SAL
(Offshore) -- growth a/c......... 240,000 * -- 3,584
Cova Bond -- Debenture............. 1,500,000 * -- 22,402
CPR (USA) Inc. .................... 7,650,000 * -- 114,252
Credit Research & Trading LLC...... 500,000 * -- 7,467
Credit Suisse First Boston
Corporation...................... 26,440,000 2 -- 394,881
Credit Suisse London Nominees
Limited.......................... 4,000,000 * 91,500 59,740
Data General....................... 300,000 * -- 4,480
D. E. Shaw Securities LP........... 400,000 * -- 5,974
Delaware Public Employee Retirement
System........................... 750,000 * -- 11,201
Delozier, Joseph and Jan........... 15,000 * -- 224
Detroit Edison Employees........... 2,250,000 * -- 33,603
Detroit Medical Endowment.......... 850,000 * -- 12,694
Detroit Medical Pension............ 1,500,000 * -- 22,402
Deutsche Bank A.G.................. 8,000,000 * -- 119,480
Donaldson, Lufkin & Jenrette
Securities Corporation........... 561,000 * -- 8,378
</TABLE>
2
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<TABLE>
<CAPTION>
PRINCIPAL AMOUNT
OF DEBENTURES PERCENT OF TOTAL COMMON STOCK COMMON STOCK
BENEFICIALLY OWNED OUTSTANDING OWNED PRIOR REGISTERED HEREBY
SELLING SECURITYHOLDERS AND OFFERED HEREBY DEBENTURES(1) TO CONVERSION (2)
----------------------- ------------------- ---------------- ------------------- -----------------
<S> <C> <C> <C> <C>
Double Black Diamond Offshore LDC.. $ 2,316,000 * 9,300 34,589
Dunn Family Trust dated 10/28/88,
David J. Dunn Trustee............ 5,000,000 * 100,000 74,675
Employers' Reinsurance
Corporation...................... 4,795,000 * -- 71,613
Ensign Peak Advisors............... 3,000,000 * -- 44,805
EQ Putnam Balanced Portfolio....... 50,000 * -- 746
Federated Equity Income Fund,
Inc. ............................ 29,000,000 2 -- 433,115
Federated Insurance Series, a
Massachusetts business trust, on
behalf of its Federated Equity
Income Fund II................... 600,000 * -- 8,961
Forest Alternative Strategies Fund
A-5.............................. 15,000,000 1 -- 224,025
Forest Alternative Strategies Fund
A-5I............................. 1,080,000 * -- 16,129
Forest Alternative Strategies Fund
A-5M............................. 510,000 * -- 7,616
Forest Alternative Strategies Fund
B-3.............................. 700,000 * -- 10,454
Forest Global Convertible Fund
A-1.............................. 90,000 * -- 1,344
Forest Global Convertible Fund
A-5.............................. 23,510,000 2 -- 351,121
Forest Global Convertible Fund
B-1.............................. 400,000 * -- 5,974
Forest Global Convertible Fund
B-2.............................. 500,000 * -- 7,467
Forest Global Convertible Fund
B-3.............................. 400,000 * -- 5,974
Forest Global Convertible Fund
B-5.............................. 800,000 * -- 11,948
Forest Greyhound c/o Forest
Investment Management LLC........ 400,000 * -- 5,974
Forest Performance Fund............ 800,000 * -- 11,948
Fort Dearborn Life Insurance
Company.......................... 360,000 * -- 5,376
Fox Family Foundation DTD 10/10/87
c/o Forest Investment Management
LLC.............................. 100,000 * -- 1,493
Fox Family Portfolio Partnership
c/o Forest Investment Management
LLC.............................. 900,000 * -- 13,441
Franklin Investors Securities
Trust -- Convertible Securities
Fund............................. 6,000,000 * -- 89,610
Franklin Strategic
Series -- Franklin Small Cap
Growth Fund...................... 23,800,000 2 -- 355,453
Franklin U.S. Small Cap Growth
Fund............................. 200,000 * -- 2,987
Fundamental Investors, Inc. ....... 22,500,000 2 -- 336,037
Gencorp............................ 4,350,000 * -- 64,967
General Motors Domestic Group
Pension Trust.................... 2,500,000 * -- 37,337
George Putnam Fund of Boston,
The.............................. 8,810,000 * -- 131,577
Gleneagles Fund Company, The....... 1,500,000 * -- 22,402
GLG Global Convertible Fund PLC.... 10,000,000 * -- 149,350
Goldman, Sachs & Co................ 6,900,000 * (3) 103,051
Goldman Sachs International........ 17,000,000 1 -- 253,895
GPZ Trading LLC.................... 8,000,000 * -- 119,480
Gruber-McBaine International....... 200,000 * -- 2,987
Habile Investments Limited......... 200,000 * -- 2,987
</TABLE>
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<TABLE>
<CAPTION>
PRINCIPAL AMOUNT
OF DEBENTURES PERCENT OF TOTAL COMMON STOCK COMMON STOCK
BENEFICIALLY OWNED OUTSTANDING OWNED PRIOR REGISTERED HEREBY
SELLING SECURITYHOLDERS AND OFFERED HEREBY DEBENTURES(1) TO CONVERSION (2)
----------------------- ------------------- ---------------- ------------------- -----------------
<S> <C> <C> <C> <C>
Halliburton High Yield............. $ 1,250,000 * -- 18,668
Hamilton Global Investors
Limited.......................... 6,000,000 * -- 89,610
Hamilton Partners Limited.......... 4,000,000 * -- 59,740
Highbridge Capital Corporation..... 15,000,000 1 -- 224,025
Houston Fire "B"................... 4,000,000 * -- 59,740
Houston Municipal.................. 2,000,000 * -- 29,870
HSBC Securities Inc. .............. 7,100,000 * -- 106,038
Idanta Partners Ltd. .............. 8,000,000 * 100,000 119,480
Idanta Partners Ltd. Retirement
Plan............................. 500,000 * -- 7,467
Income Fund of America, Inc.,
The.............................. 112,500,000 9 -- 1,680,187
Issa, Mr. Pierre & Mrs. Claude..... 80,000 * -- 1,194
J.P. Morgan & Co. Incorporated..... 29,000,000 2 -- 433,115
Jatyco Inc. -- No. 2 a/c........... 120,000 * -- 1,792
Kensington Value Fund LLC.......... 1,000,000 * -- 14,935
Lagunitas Partners LP.............. 200,000 * -- 2,987
LDG Limited........................ 1,500,000 * -- 22,402
Levin Charitable Trust............. 40,000 * -- 597
Libertyview Fund LLC............... 300,000 * -- 4,480
Libertyview Plus Fund.............. 8,550,000 * -- 127,097
LLT Limited........................ 810,000 * -- 12,907
Lombard Odier & Cie................ 1,814,000 * -- 27,092
Loomis Sayles Fixed Income Fund.... 1,250,000 * -- 18,668
Loomis Sayles High Yield Fixed
Income Fund...................... 400,000 * -- 5,974
Loomis Sayles Offshore High
Yield............................ 2,500,000 * -- 37,337
Maine State Retirement System...... 3,500,000 * -- 52,272
Marsh & McLennan Companies Inc. ... 360,000 * -- 5,376
McMahan Securities Company,
L.P. ............................ 542,000 * -- 8,094
Mellon Bank NA, Trustee for General
Motors Employees Domestic Group
Pension Trust.................... 2,500,000 * -- 37,337
Merrill Lynch International
Ltd. ............................ 14,305,000 1 -- 213,645
Merrill Lynch Pierce Fenner &
Smith............................ 30,750,000 2 -- 459,251
Metropolitan Life fbo General
Motors........................... 750,000 * -- 11,201
Metropolitan Life LS High Yield
Series........................... 1,400,000 * -- 20,909
Millennium Trading Co. L.P. ....... 9,000,000 * -- 134,415
Milwaukee County, Wisconsin........ 1,000,000 * -- 14,935
Minneapolis Teachers............... 1,650,000 * -- 24,642
Museum of Fine Arts, Boston........ 590,000 * -- 8,811
NationsBanc Montgomery Securities,
LLC.............................. 10,000,000 * -- 149,350
Nationwide Family of Funds, on
behalf of its Nationwide E Equity
Income Fund...................... 120,000 * -- 1,792
Nationwide Separate Account Trust
Equity Income Fund............... 120,000 * -- 1,792
Navesink Equity Derivative Fund
LDC.............................. 11,000,000 * -- 164,285
</TABLE>
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<TABLE>
<CAPTION>
PRINCIPAL AMOUNT
OF DEBENTURES PERCENT OF TOTAL COMMON STOCK COMMON STOCK
BENEFICIALLY OWNED OUTSTANDING OWNED PRIOR REGISTERED HEREBY
SELLING SECURITYHOLDERS AND OFFERED HEREBY DEBENTURES(1) TO CONVERSION (2)
----------------------- ------------------- ---------------- ------------------- -----------------
<S> <C> <C> <C> <C>
New England Strategic Income
Fund............................. $ 3,000,000 * -- 44,805
New Hampshire State Retirement
System........................... 3,100,000 * -- 46,298
New York City Employees' Retirement
Plan............................. 2,425,000 * -- 36,217
New York City Firemen's Retirement
Plan............................. 2,400,000 * -- 35,844
New York City Teachers Retirement
System........................... 9,650,000 * -- 144,122
New York State Electric & Gas Ret.
Ben. Plan........................ 2,000,000 * -- 29,870
Nike Co. .......................... 400,000 * -- 5,974
Northwestern Mutual Life Insurance
Company, The (Includes $1,000,000
in principal amount held by The
Northwestern Mutual Life
Insurance Company Group Annuity
Separate Account)................ 8,000,000 * (4) 119,480
Oakmont Holdings Limited........... 40,000 * -- 597
Orange County Retirement........... 2,250,000 * -- 33,603
Orrington International Fund
Ltd. ............................ 2,238,000 * -- 33,424
Orrington Investments LP........... 3,762,000 * -- 56,185
Palladin Overseas Fund Ltd. ....... 1,500,000 * -- 22,402
Palladin Partners I. L.P. ......... 500,000 * -- 7,467
Parker-Hannifin Corporation........ 750,000 * -- 11,201
Partner Reinsurance Co. ........... 1,000,000 * -- 14,935
Partners Healthcare Services....... 2,100,000 * -- 31,363
Pension Reserves Investment
Trust............................ 2,000,000 * -- 29,870
Promutual.......................... 2,540,000 * -- 37,934
Putnam Balanced Retirement Fund.... 2,590,000 * -- 38,681
Putnam Convertible Income-Growth
Trust............................ 35,563,000 3 -- 531,133
Putnam Convertible Opportunities
and Income Trust................. 1,945,000 * -- 29,048
Putnam Equity Income Fund.......... 3,780,000 * -- 56,454
Putnam Funds Trust -- Putnam High
Yield Total Return Fund.......... 245,000 * -- 3,659
Putnam High Income Convertible and
Bond Fund........................ 4,000,000 * -- 59,740
Putnam Variable Trust -- Putnam VT
The George Putnam Fund of
Boston........................... 100,000 * -- 1,493
Q Investments, L.P. ............... 2,750,000 * -- 41,071
R(2) Investments, LDC.............. 6,990,000 * -- 104,395
Raytheon Master Trust.............. 4,250,000 * -- 63,473
Rhode Island Retirement............ 9,625,000 * -- 143,749
Rohne-Poulenc Rorer Inc. Pension
Plan............................. 800,000 * -- 11,948
Salomon Brothers Capital Structure
Arbitrage Fund................... 6,000,000 * (5) 89,610
Salomon Brothers Equity Arbitrage
Finance Ltd Fund................. 2,000,000 * (5) 29,870
</TABLE>
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<TABLE>
<CAPTION>
PRINCIPAL AMOUNT
OF DEBENTURES PERCENT OF TOTAL COMMON STOCK COMMON STOCK
BENEFICIALLY OWNED OUTSTANDING OWNED PRIOR REGISTERED HEREBY
SELLING SECURITYHOLDERS AND OFFERED HEREBY DEBENTURES(1) TO CONVERSION (2)
----------------------- ------------------- ---------------- ------------------- -----------------
<S> <C> <C> <C> <C>
Sanders, Mark and Cynthia........... $ 40,000 * -- 597
SG Cowen Securities Corporation..... 27,050,000 2 -- 403,991
Shepherd Investments International,
Ltd. ............................. 33,465,000 3 -- 499,799
Shepherd Trading Limited............ 1,250,000 * -- 18,668
SoundShore Holdings Ltd. ........... 5,400,000 * -- 80,649
Southern Farm Bureau Life Insurance
Co. .............................. 1,500,000 * 60,000 22,402
State of Connecticut Fund "F"....... 5,000,000 * -- 74,675
Susquehanna Capital Group........... 19,850,000 2 -- 296,459
Talwar Trading & Investments
Ltd. ............................. 120,000 * -- 1,792
Teamsters Affiliates Pension Plan... 2,425,000 * -- 36,217
Teamsters Retirement and Family
Protection........................ 400,000 * -- 5,974
Tower, Peter & Elizabeth (Tower
Foundation)....................... 150,000 * -- 2,240
TQA Arbitrage Fund, L.P. ........... 4,500,000 * -- 67,207
TQA Leverage Fund, L.P. ............ 3,000,000 * -- 44,805
TQA Vantage Fund, Ltd. ............. 5,500,000 * -- 82,142
TQA Vantage Plus, Ltd. ............. 1,500,000 * -- 22,402
Tribeca Investments, L.L.C.......... 14,000,000 1 -- 209,090
UA General Officers Retirement
Plan.............................. 50,000 * -- 746
UA Local Union Officers & Employees
Pension........................... 400,000 * -- 5,974
UA Office Employees Retirement
Plan.............................. 25,000 * -- 373
UFCW................................ 500,000 * -- 7,467
United Mine Workers................. 4,900,000 * -- 73,181
University of Rochester............. 590,000 * -- 8,811
Vivaldi Investments Limited......... 160,000 * -- 2,389
World Bank "B"...................... 1,125,000 * -- 16,801
Worldwide Transactions Ltd. ........ 880,000 * 8,555 13,142
Zazove Aggressive Growth Fund,
L.P. ............................. 850,000 * -- 12,694
Zazove Convertible Fund, L.P. ...... 3,200,000 * -- 47,792
Zazove Global Convertible Fund,
L.P. ............................. 345,000 * -- 5,152
</TABLE>
- ---------------
* Less than one percent.
(1) The percent of total outstanding Debentures held by each Selling
Securityholder is calculated based on the aggregate principal amount of
Debentures originally issued by the Company, and does not take into account
conversions, exchanges or other transactions by the Selling Securityholders
which may reduce the aggregate principal amount of Debentures currently
outstanding.
(2) The shares of Common Stock registered hereby are calculated on an "as
converted" basis using the conversion rate described on the cover page of
this Prospectus.
(3) Goldman, Sachs & Co. was one of the Initial Purchasers in the private
placement of the Debentures by the Company on February 18, 1998. Goldman,
Sachs & Co. also holds $2,572,000 principal amount of Debentures,
convertible into 38,412 shares of Common Stock, which are not offered
hereby.
(4) In the ordinary course of business, Northwestern Mutual Investment Services,
Inc., Robert W. Baird & Co. Incorporated, Baird/Mark Capital Group, and MGIC
Mortgage Securities Corporation, each of which is a
6
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broker-dealer and affiliated with The Northwestern Mutual Life Insurance
Company, may, from time to time, have acquired or disposed of, or may in the
future acquire or dispose of, securities of the Company, for such
broker-dealers' own accounts or for the accounts of others. Other affiliates
of The Northwestern Mutual Life Insurance Company may, in the ordinary
course of business, effect transactions in the securities of the Company.
Only security holdings of The Northwestern Mutual Life Insurance Company are
reflected. The Northwestern Mutual Life Insurance Company and its affiliates
may, in the ordinary course of business, take part in transactions involving
the real property of the Company.
(5) Salomon Brothers Asset Management Inc. ("SBAM") acts as discretionary
investment advisor with respect to the noted accounts that hold the
debentures. Accordingly, SBAM may be deemed to be the beneficial owner of
such debentures. SBAM also acts as discretionary investment advisor with
respect to the Gaguine Family Trust, which holds 4,000 shares of the
Company's common stock. Accordingly, SBAM may be deemed to be the beneficial
owner of such shares.
Unless otherwise indicated, none of the Selling Securityholders has, or
within the past three years has had, any position, office or other material
relationship with the Company or any of its affiliates. Because the Selling
Securityholders may, pursuant to this Prospectus, sell all or some portion of
the Debentures or the Registrable Securities, no estimate can be given as to the
amount of the Debentures or the Registrable Securities that will be held by the
Selling Securityholders upon termination of any such sales. In addition, the
Selling Securityholders identified above may have sold, transferred or otherwise
disposed of all or a portion of their Debentures, in transactions exempt from
the registration requirements of the Securities Act, since the date on which
they provided the information regarding their Debentures. See "Plan of
Distribution."
The Debentures were originally issued by the Company in a private placement
on February 18, 1998 to the Initial Purchasers and were subsequently sold by the
Initial Purchasers, in transactions exempt from the registration requirements of
the Securities Act, to persons reasonably believed by such Initial Purchasers to
be "qualified institutional buyers" (as defined in Rule 144A under the
Securities Act).
Generally, only Selling Securityholders identified above who beneficially
own the Debentures set forth opposite each such Selling Securityholder's name in
the foregoing table may sell such Debentures pursuant to the Shelf Registration
Statement. The Company may from time to time, in accordance with the
Registration Rights Agreement, include additional Selling Securityholders in
supplements or amendments to this Prospectus.
THE DATE OF THIS PROSPECTUS SUPPLEMENT IS JULY 29, 1999
7
