International Game Technology
 

Filed pursuant to Rule 424(b)(3)

Registration No. 333-103339

Prospectus Supplement No. 6

(To Prospectus Dated August 11, 2003)

$969,790,000

INTERNATIONAL GAME TECHNOLOGY
ZERO-COUPON CONVERTIBLE DEBENTURES DUE JANUARY 29, 2003 AND
COMMON STOCK ISSUABLE UPON CONVERSION OF THE DEBENTURES

This prospectus supplement amends and supplements the prospectus dated August 11, 2003, as supplemented by Prospectus Supplement No. 1 dated September 4, 2003, Prospectus Supplement No. 2 dated September 23, 2003, Prospectus Supplement No. 3 dated October 8, 2003, Prospectus Supplement No. 4 dated October 29, 2003 and Prospectus Supplement No. 5 dated November 24, 2003 relating to our Zero-Coupon Convertible Debentures due January 29, 2003 (the “Debentures”) and the shares of our common stock issuable upon conversion of the Debentures.

This prospectus supplement is incorporated by reference into, and should be read in conjunction with, the prospectus dated August 11, 2003, including any amendments or supplements to it. This prospectus supplement is not complete without, and may not be delivered or utilized except in connection with, the prospectus dated August 11, 2003, including any amendments or supplements to it.

See “Risk Factors” beginning on page 10 of the prospectus dated August 11, 2003 to read about factors you should consider before buying the Debentures.

Neither the Securities and Exchange Commission, any state securities commission, nor any gaming regulatory authority has approved or disapproved of the securities or passed upon the adequacy or accuracy of this prospectus. Any representation to the contrary is a criminal offense.

This prospectus supplement amends and replaces the second paragraph and the table under the heading “Selling Securityholders” beginning on page 47 of the prospectus dated August 11, 2003 and page 2 of Prospectus Supplement No. 1 dated September 4, 2003, Prospectus Supplement No. 2 dated September 23, 2003, Prospectus Supplement No. 3 dated October 8, 2003, Prospectus Supplement No. 4 dated October 29, 2003 and Prospectus Supplement No. 5 dated November 24, 2003 with the information in the following paragraph and table.

The date of this prospectus supplement is December 19, 2003.

 

SELLING SECURITYHOLDERS

       The table below sets forth the name of each selling securityholder, the principal amount at maturity of Debentures, as of December 19, 2003, that each selling securityholder may offer pursuant to this prospectus and the number of shares of our Common Stock into which those Debentures are convertible. Unless set forth below, none of the selling securityholders has, or within the past three years has had, any material relationship with us or any of our predecessors or affiliates.

                                         
Aggregate Principal Percentage
Amount at Maturity of Number of Number of Number of
of Debentures Debentures Shares of Shares of Shares of
Owned Before Outstanding Common Stock Common Stock Common Stock
Offering and That Before Held Before Offered for Held After
Name May Be Sold Offering Offering(1) Sale(1)(2) Offering(3)
AIG DKR SoundShore Oasis Holding Fund Ltd.
  $ 4,500,000       *       95,266       95,266       —  
AIG DKR SoundShore Overseas Holding Fund Ltd.
  $ 1,570,000       *       33,237       33,237       —  
AIG DKR SoundShore Strategic Holding Fund Ltd.
  $ 5,000,000       *       105,852       105,852       —  
Alexandra Global Master Fund, LTD
  $ 10,000,000       1.03 %     211,704       211,704       —  
AM Investment D Fund (QP) Ltd. 
   $ 825,000       *       17,465       17,465       —  
AM Investment E Fund Ltd. 
   $ 4,725,000       *       100,030       100,030       —  
Amaranth LLC
  $ 8,800,000       *       186,299       186,299       —  
American Fidelity Assurance Company
  $ 1,400,000       *       29,638       29,638       —  
Amerisure Mutual Insurance Company
  $ 555,000       *       11,749       11,749       —  
AOI Alternative Investments
  $ 2,000,000       *       42,340       42,340       —  
Arbitex Master Fund, L.P.(5)
  $ 19,900,000       2.05 %     421,290       421,290       —  
Asymmetric Convertible Fund(5)
  $ 2,000,000       *       42,340       42,340       —  
ATSF-Transamerica Convertible Securities(5)
  $ 10,000,000       1.03 %     211,704       211,704       —  
Aventis Pension Master Trust
  $ 350,000       *       7,409       7,409       —  
Bank Austria Cayman Islands, LTD
  $ 6,000,000       *       127,022       127,022       —  
Bear, Stearns & Co., Inc.(4)
  $ 15,000,000       1.55 %     317,556       317,556       —  
Bear Stearns International Limited (BSIL)(4)(5)
  $ 11,700,000       1.21 %     247,693       247,693       —  
BGI Global Investors c/ o Forest Investment Management L.L.C. 
   $ 1,422,000       *       30,104       30,104       —  
Blue Cross Blue Shield of Delaware, Inc.
  $ 330,000       *       6,986       6,986       —  
BNP Paribas Equity Strategies, SNC(5)
  $ 15,786,000       1.63 %     370,639       334,195       36,444  
Boilermaker-Blacksmith Pension Trust
  $ 2,000,000       *       42,340       42,340       —  
CALAMOS® Convertible Fund — CALAMOS® Investment Trust
  $ 37,000,000       3.82 %     783,304       783,304       —  
CALAMOS® Convertible Growth and Income Fund — CALAMOS Investment Trust
  $ 19,000,000       1.96 %     402,237       402,237       —  
CALAMOS® Convertible Portfolio — CALAMOS® Advisors Trust
  $ 225,000       *       4,763       4,763       —  
CALAMOS® Global Convertible Fund — CALAMOS® Investment Trust
  $ 500,000       *       10,585       10,585       —  
The California Wellness Foundation
  $ 575,000       *       12,172       12,172       —  
CareFirst BlueChoice, Inc. 
   $ 195,000       *       4,128       4,128       —  
CareFirst of Maryland, Inc. 
   $ 900,000       *       19,053       19,053       —  
CC Investments, LDC(5)
  $ 11,700,000       1.21 %     247,693       247,693       —  
CGNU Life Global Convertibles
  $ 2,200,000       *       46,574       46,574       —  
Chrysler Corporation Master Retirement Trust
  $ 6,175,000       *       130,727       130,727       —  
Citi JL, Ltd. 
   $ 334,000       *       7,070       7,070       —  
City of Albany Pension Plan
  $ 100,000       *       2,117       2,117       —  
City of Birmingham Retirement & Relief System
  $ 1,900,000       *       40,223       40,223       —  
City of Knoxville Pension System
  $ 425,000       *       8,997       8,997       —  
The Cockrell Foundation
  $ 200,000       *       4,234       4,234       —  
Coda Capital Management, LLC
  $ 4,000,000       *       84,681       84,681       —  

2

 

                                         
Aggregate Principal Percentage
Amount at Maturity of Number of Number of Number of
of Debentures Debentures Shares of Shares of Shares of
Owned Before Outstanding Common Stock Common Stock Common Stock
Offering and That Before Held Before Offered for Held After
Name May Be Sold Offering Offering(1) Sale(1)(2) Offering(3)
Commercial Union Life Global Convertibles
  $ 3,000,000       *       63,511       63,511       —  
Common Fund Event Driven Company, Ltd. c/o Levco(5)
  $ 250,000       *       5,292       5,292       —  
CooperNeff Convertible Strategies (Cayman) Master Fund, L.P. 
   $ 10,801,000       1.11 %     228,661       228,661       —  
Credit Suisse First Boston LLC(4)(5)
  $ 3,000,000       *       63,511       63,511       —  
DBAG London(5)
  $ 3,500,000       *       74,096       74,096       —  
D.E. Shaw Investment Group, L.P.(5)
  $ 3,800,000       *       80,447       80,447       —  
D.E. Shaw Valence Portfolios, L.P.(5)
  $ 15,000,000       1.55 %     317,556       317,556       —  
Deephaven Domestic Convertible Trading Ltd. 
   $ 4,930,000       *       104,370       104,370       —  
Delta Air Lines Master Trust — CV
  $ 2,185,000       *       46,257       46,257       —  
Delta Airlines Master Trust
  $ 2,000,000       *       42,340       42,340       —  
Delta Pilots Disability & Survivorship Trust — CV
  $ 1,055,000       *       22,334       22,334       —  
Delta Pilots Disability & Survivorship Trust
  $ 600,000       *       12,702       12,702       —  
Dorinco Reinsurance Company
  $ 1,100,000       *       23,287       23,287       —  
The Dow Chemical Employees’ Retirement Plan
  $ 3,800,000       *       80,447       80,447       —  
The Fondren Foundation
  $ 260,000       *       5,504       5,504       —  
Forest Fulcrum Fund L.L.P.(4)
  $ 4,086,000       *       86,502       86,502       —  
Forest Global Convertible Fund Series A-5
  $ 16,576,000       1.71 %     350,920       350,920       —  
Forest Multi-Strategy Master Fund SPG, on behalf of Series F, Multi-Strategy Segregated Portfolio
  $ 2,046,000       *       43,314       43,314       —  
FreeState Health Plan, Inc. 
   $ 80,000       *       1,693       1,693       —  
Gaia Offshore Master Fund Ltd.
  $ 24,200,000       2.50 %     512,323       512,323       —  
Gasner Investors Holdings Ltd.
  $ 3,250,000       *       68,803       68,803       —  
Genesee County Employees’ Retirement System
  $ 1,000,000       *       21,170       21,170       —  
GLG Market Neutral Fund
  $ 33,800,000       3.49 %     715,559       715,559       —  
Goldman, Sachs & Co.(4)(8)
  $ 5,590,000       *       325,054       118,342       206,712  
Greek Catholic Union of the USA
  $ 150,000       *       3,175       3,175       —  
Group Hospitalization and Medical Services, Inc.
  $ 1,000,000       *       21,170       21,170       —  
Guggenheim Portfolio Co. XV, LLC
  $ 1,500,000       *       31,755       31,755       —  
Hamilton Multi-Strategy Master Fund L.P.
  $ 16,300,000       1.68 %     345,077       345,077       —  
HealthNow New York, Inc.
  $ 400,000       *       8,468       8,468       —  
HFR CA Select Fund
  $ 1,400,000       *       29,638       29,638       —  
Highbridge International LLC
  $ 38,800,000       4.00 %     821,411       821,411       —  
HSBC Trustee, Zola Managed Trust
  $ 500,000       *       10,585       10,585       —  
IDEX — Transamerica Convertible Securities Fund(5)
  $ 1,900,000       *       40,223       40,223       —  
Jackson County Employees’ Retirement System
  $ 450,000       *       9,526       9,526       —  
JC Penney Insurance Co. Group(5)
  $ 1,600,000       *       33,872       33,872       —  
JP Morgan Securities Inc.(4)
  $ 21,165,000       2.18 %     448,071       448,071       —  
KBC Financial Products [Cayman Islands] Ltd. 
   $ 9,000,000       *       190,533       190,533       —  
KBC Financial Products USA Inc.(4)
  $ 3,270,000       *       69,227       69,227       —  
Knoxville Utilities Board Retirement System
  $ 185,000       *       3,916       3,916       —  
Laurel Ridge Capital, LP
  $ 7,700,000       *       163,012       163,012       —  
Levco Alternative Fund, Ltd.(5)
  $ 8,445,000       *       178,784       178,784       —  
LLT Limited
  $ 1,356,000       *       28,707       28,707       —  
Louisiana Worker’s Compensation Corporation
  $ 500,000       *       10,585       10,585       —  
Lyxor Master Fund(5)
  $ 7,000,000       *       148,192       148,192       —  
Lyxor Master Fund c/o Forest Investment Management L.L.C.(5)
  $ 12,080,000       1.25 %     255,738       255,738       —  

3

 

                                         
Aggregate Principal Percentage
Amount at Maturity of Number of Number of Number of
of Debentures Debentures Shares of Shares of Shares of
Owned Before Outstanding Common Stock Common Stock Common Stock
Offering and That Before Held Before Offered for Held After
Name May Be Sold Offering Offering(1) Sale(1)(2) Offering(3)
Lyxor Master Fund c/o Zola Capital Management
  $ 3,600,000       *       76,213       76,213       —  
Lyxor/AM Investment Fund Ltd. 
   $ 1,250,000       *       26,463       26,463       —  
Lyxor/ Gaia II Fund Ltd. 
   $ 5,400,000       *       114,320       114,320       —  
Lyxor/ JLC Fund, Ltd.(5)
  $ 631,000       *       13,358       13,358       —  
Macomb County Employees’ Retirement System
  $ 410,000       *       8,679       8,679       —  
Man Convertible Bond Master Fund, Ltd. 
   $ 12,275,000       1.27 %     259,866       259,866       —  
Merrill Lynch, Pierce, Fenner & Smith Incorporated(4)
  $ 54,700,000       5.64 %     1,158,020       1,158,020       —  
Microsoft Corporation
  $ 3,010,000       *       63,722       63,722       —  
MLQA Convertible Securities Arbitrage, Ltd.(5)
  $ 12,500,000       1.29 %     264,630       264,630       —  
Motion Picture Industry Health Plan — Active Member Fund
  $ 545,000       *       11,537       11,537       —  
Motion Picture Industry Health Plan — Retiree Member Fund
  $ 340,000       *       7,197       7,197       —  
Natexis Banques Populaires
  $ 7,000,000       *       148,192       148,192       —  
Nationwide Mutual Gartmore/Coda Convertible Fixed Income Fund
  $ 3,250,000       *       68,803       68,803       —  
Nicholas Applegate Investment Grade Convertible
  $ 20,000       *       423       423       —  
Nisswa Master Fund Ltd. 
   $ 4,000,000       *       84,681       84,681       —  
NMS Services (Cayman) Inc.(5)
  $ 5,000,000       *       105,852       105,852       —  
NORCAL Mutual Insurance Company
  $ 800,000       *       16,936       16,936       —  
Norwich Union Life & Pensions Global Convertibles
  $ 4,500,000       *       95,266       95,266       —  
Oakwood Healthcare Inc. (Pension)
  $ 200,000       *       4,234       4,234       —  
Oakwood Assurance Company
  $ 65,000       *       1,376       1,376       —  
Oakwood Healthcare Inc. — OHP
  $ 15,000       *       317       317       —  
Oakwood Healthcare Inc. Endowment
  $ 10,000       *       211       211       —  
Oakwood Healthcare Inc. Funded Depreciation
  $ 110,000       *       2,328       2,328       —  
OCM Convertible Trust
  $ 1,460,000       *       30,908       30,908       —  
Onyx Fund Holdings, LDC
  $ 1,700,000       *       35,989       35,989       —  
Oppenheimer Convertible Securities Fund(5)
  $ 5,000,000       *       105,852       105,852       —  
OZ Convertible Master Fund, Ltd. 
   $ 1,119,000       *       23,689       23,689       —  
OZ Master Fund, Ltd. 
   $ 13,801,000       1.42 %     292,172       292,172       —  
Partner Reinsurance Company Ltd. 
   $ 1,735,000       *       36,730       36,730       —  
Physician’s Reciprocal Insurers Account #7
  $ 2,200,000       *       46,574       46,574       —  
Port Authority of Allegheny County Retirement and Disability Allowance Plan for the Employees Represented by Local 85 of the Amalgamated Transit Union
  $ 1,000,000       *       21,170       21,170       —  
Prisma Foundation
  $ 110,000       *       2,328       2,328       —  
Privilege Portfolio SICAV
  $ 5,000,000       *       105,852       105,852       —  
Purchase Associates, L.P.(5)
  $ 1,840,000       *       38,953       38,953       —  
Quest Global Convertible Master Fund, Ltd. 
   $ 4,000,000       *       84,681       84,681       —  
Qwest Occupational Health Trust
  $ 585,000       *       12,384       12,384       —  
R2 Investments, LDC
  $ 675,000       *       14,290       14,290       —  
Radcliffe SPC, Ltd. for and on behalf of the Class A Convertible Crossover Segregated Portfolio
  $ 5,400,000       *       114,320       114,320       —  
Ramius Capital Group(5)
  $ 750,000       *       15,877       15,877       —  
Ramius Master Fund, Ltd. 
   $ 8,000,000       *       169,363       169,363       —  
Ramius Partners II, LP
  $ 350,000       *       7,409       7,409       —  
Ramius, LP
  $ 200,000       *       4,234       4,234       —  
RBC Alternative Assets LP c/o Forest Investment Management L.L.C. 
   $ 1,274,000       *       26,971       26,971       —  
RCG Baldwin, LP
  $ 600,000       *       12,702       12,702       —  

4

 

                                         
Aggregate Principal Percentage
Amount at Maturity of Number of Number of Number of
of Debentures Debentures Shares of Shares of Shares of
Owned Before Outstanding Common Stock Common Stock Common Stock
Offering and That Before Held Before Offered for Held After
Name May Be Sold Offering Offering(1) Sale(1)(2) Offering(3)
RCG Halifax Master Fund, LTD
  $ 1,500,000       *       31,755       31,755       —  
RCG Latitude Master Fund, LTD
  $ 8,000,000       *       169,363       169,363       —  
RCG Multi Strategy Master Fund, LTD
  $ 500,000       *       10,585       10,585       —  
Relay 11 Holdings c/o Forest Investment Management L.L.C. 
   $ 701,000       *       14,840       14,840       —  
Royal Bank of Canada(5)
  $ 10,000,000       1.03 %     327,932       211,704       116,228  
Sagamore Hill Hub Fund Ltd. 
   $ 22,500,000       2.32 %     476,334       476,334       —  
Salomon Smith Barney Inc.(4)
  $ 16,800,000       1.73 %     355,662       355,662       —  
San Diego County Employee Retirement Association
  $ 1,000,000       *       21,170       21,170       —  
SCI Endowment Care Common Trust Fund — First Union
  $ 80,000       *       1,693       1,693       —  
SCI Endowment Care Common Trust Fund — National Fiduciary Services
  $ 270,000       *       5,716       5,716       —  
SCI Endowment Care Common Trust Fund — Suntrust
  $ 100,000       *       2,117       2,117       —  
SEI Private Trust Company
  $ 860,000       *       18,206       18,206       —  
Silverback Master, LTD
  $ 10,000,000       1.03 %     211,704       211,704       —  
Single Hedge US Convertible Arbitrage Fund
  $ 961,000       *       20,344       20,344       —  
Southdown Pension Plan
  $ 175,000       *       3,704       3,704       —  
Southern Farm Bureau Life Insurance Company
  $ 2,000,000       *       42,340       42,340       —  
Sphinx Convertible Arbitrage c/o Forest Investment Management L.L.C. 
   $ 543,000       *       11,495       11,495       —  
Sphinx Convertible Arbitrage Fund SPC
  $ 70,000       *       1,481       1,481       —  
SPT
  $ 2,400,000       *       50,808       50,808       —  
St. Thomas Trading, Ltd.(5)
  $ 27,825,000       2.87 %     589,066       589,066       —  
State Employees’ Retirement Fund of the State of Delaware
  $ 2,305,000       *       48,797       48,797       —  
Sturgeon Limited
  $ 2,063,000       *       43,674       43,674       —  
Sunrise Partners Limited Partnership(5)
  $ 6,700,000       *       155,041       141,841       13,200  
Swiss Re Financial Products Corporation(5)
  $ 41,900,000       4.32 %     887,039       887,039       —  
TCW Group, Inc.
  $ 12,625,000       1.30 %     267,276       267,276       —  
Teachers Insurance and Annuity Association
  $ 12,700,000       1.31 %     268,864       268,864       —  
Topanga XI(5)
  $ 9,606,000       *       203,362       203,362       —  
Transamerica Life Insurance & Annuities Corp.(5)
  $ 39,200,000       4.04 %     829,879       829,879       —  
UBS AG LON F/ B/ O PB(4)
  $ 17,500,000       1.80 %     370,482       370,482       —  
UBS O’Connor LLC F/ B/ O O’Connor Global Convertible Arbitrage Master Ltd.
  $ 5,100,000       *       107,969       107,969       —  
UBS Securities LLC
  $ 635,000       *       13,443       13,443       —  
Union Carbide Retirement
  $ 1,700,000       *       35,989       35,989       —  
United Food and Commercial Workers Local 1262 and Employers Pension Fund
  $ 860,000       *       18,206       18,206       —  
Univar USA Retirement Plan
  $ 430,000       *       9,103       9,103       —  
White River Securities L.L.C.(4)
  $ 15,000,000       1.55 %     317,556       317,556       —  
Wolverine Asset Management, LLC(5)
  $ 5,194,000       *       109,959       109,959       —  
XAVEX Convertible Arbitrage #5
  $ 500,000       *       10,585       10,585       —  
XAVEX Convertible Arbitrage 4 Fund c/o Forest Investment Management L.L.C. 
   $ 520,000       *       11,008       11,008       —  
Zazove Convertible Arbitrage Fund, L.P.
  $ 4,000,000       *       84,681       84,681       —  
Zazove Hedged Convertible Fund, L.P.
  $ 3,500,000       *       74,096       74,096       —  
Zazove Income Fund, L.P.
  $ 3,000,000       *       63,511       63,511       —  
Zola Partners, L.P.
  $ 2,100,000       *       44,457       44,457       —  

5

 

                                         
Aggregate Principal Percentage
Amount at Maturity of Number of Number of Number of
of Debentures Debentures Shares of Shares of Shares of
Owned Before Outstanding Common Stock Common Stock Common Stock
Offering and That Before Held Before Offered for Held After
Name May Be Sold Offering Offering(1) Sale(1)(2) Offering(3)
Zurich Institutional Benchmarks Master Fund Ltd.
  $ 4,000,000       *       84,681       84,681       —  
Zurich Master Hedge Fund c/o Forest Investment Management L.L.C. 
   $ 3,461,000       *       73,270       73,270       —  
All other Holders of the Debentures or future transferees, pledges, donees, assignees or successors of any such holders(6)
  $ 2,574,000       0.27 %     54,492       54,492       — (7)
     
     
     
     
     
 
Total
  $ 969,790,000       100.00 %     20,903,348       20,530,764       372,584  
     
     
     
     
     
 

  * Less than one percent (1%).

(1)  Assumes conversion of all of the holder’s Debentures at the initial conversion rate of 21.1704 shares of Common Stock per $1,000 principal amount at maturity of the Debentures which gives effect to the four-for-one stock split effected on June 18, 2003. This conversion rate is subject to further adjustment as described under “Description of Debentures — Conversion Rate Adjustments.” As a result, the number of shares of our Common Stock issuable upon conversion of the Debentures may increase or decrease in the future. In addition, the number of shares of Common Stock listed for each holder does not include fractional shares. Holders will receive a cash payment for any fractional share resulting from conversion of the Debentures, as described under “Description of Debentures — Conversion Rate and Conversion Procedures.”
 
(2)  The shares of Common Stock that may be sold upon conversion of the Debentures by any selling securityholder will not represent 1% or more of our outstanding Common Stock.
 
(3)  Assumes all of the Debentures and shares of Common Stock issuable upon their conversion are sold in the offering. Share numbers have been adjusted to reflect the four-for-one stock split.
 
(4)  This selling securityholder has identified itself as a registered broker-dealer and, accordingly, an underwriter. Please see “Plan of Distribution” for required disclosure regarding these selling securityholders.
 
(5)  This selling securityholder has identified itself as an affiliate of a broker-dealer. Please see “Plan of Distribution” for required disclosure regarding these selling securityholders.
 
(6)  New selling securityholders, if any, will be set forth from time to time in post-effective amendments to the registration statement of which this prospectus forms a part or prospectus supplements, as required.
 
(7)  Assumes that any other holders of Debentures, or any future transferees, pledgees, donees or successors of or from any such other holders of Debentures do not beneficially own any Common Stock other than the Common Stock issuable upon conversion of the Debentures.
 
(8)  Goldman, Sachs & Co. was the Initial Purchaser of the Debentures.

6