424(B)(3) for Allergan
 

Filed Pursuant to Rule 424(b)(3)
Registration No. 333-102425

PROSPECTUS SUPPLEMENT NO. 4
(TO PROSPECTUS DATED JANUARY 21, 2003)

$641,510,000
ALLERGAN, INC.

ZERO COUPON CONVERTIBLE SENIOR NOTES DUE 2022
SHARES OF COMMON STOCK ISSUABLE UPON CONVERSION OF THE NOTES

     This Prospectus Supplement No. 4 supplements and amends the Prospectus dated January 21, 2003, as amended (as amended, the “Prospectus”), relating to the resale from time to time by holders of our Zero Coupon Convertible Senior Notes Due 2022 and shares of our common stock issuable upon the conversion of the Notes. Such information has been obtained from the selling securityholders. This prospectus supplement should be read in conjunction with the Prospectus, which is to be delivered with this prospectus supplement.

     The information appearing in the table below, as of the date hereof, supplements and amends the information in the table appearing under the heading “Selling Securityholders” in the Prospectus, and, where the name of a Selling Securityholder identified in the table below also appears in the table in the Prospectus, the information set forth in the table below regarding that Selling Securityholder supercedes the information in the Prospectus:

                                 
    PRINCIPAL                        
    AMOUNT OF                        
    NOTES                        
    BENEFICIALLY           COMMON   COMMON
    OWNED AND   PERCENTAGE   STOCK OWNED   STOCK
    OFFERED   OF NOTES   PRIOR TO THE   OFFERED
NAME   HEREBY (1)   OUTSTANDING   OFFERING   HEREBY (1)

 
 
 
 
American Skandia Trust
    1,000,000       *               11,410  
B.C. McCabe Foundation
    175,000       *               1,996  
BCI Global Investors c/o Forest Investment Management LLC
    425,000       *               4,849  
Canadian Imperial Holdings, Inc.
    10,000,000       1.56 %             114,100  
Daimler Chrysler Corp Emp #1 Retirement Plan dtd April 1, 1989
    3,924,000       *               44,772  
Forest Global Convertible Fund Series A-5
    5,519,000       *               62,971  
Franklin and Marshall College
    220,000       *               2,510  
Fuji U.S. Income Open
    1,150,000       *               13,121  
JMG Convertible Investments, LP
    8,750,000       1.36 %             99,837  
JMG Triton Offshore Fund, Ltd.
    8,750,000       1.36 %             99,837  
Keyspan Foundation
    75,000       *               855  
LLT Limited
    531,000       *               6,058  
Lyxor Master Fund c/o Forest Investment Management LLC
    1,486,000       *               16,995  
Medamerica Insurance Company
    1,800,000       *               20,538  
Medamerica Insurance Company of N.Y.
    350,000       *               3,993  
Met Investors Bond Debenture Fund
    2,000,000       *               22,820  
Oxford, Lord Abbott Co.
    1,500,000       *               17,115  
Radian Asset Guaranty
    2,000,000       *               22,820  
Radian Guaranty
    4,150,000       *               47,351  
RBC Alternative Assets LP c/o Forest Investment Management LLC
    372,000       *               4,244  
Relay II Holdings c/o Forest Investment Management LLC
    213,000       *               2,430  

 


 

                                 
    PRINCIPAL                        
    AMOUNT OF                        
    NOTES                        
    BENEFICIALLY           COMMON   COMMON
    OWNED AND   PERCENTAGE   STOCK OWNED   STOCK
    OFFERED   OF NOTES   PRIOR TO THE   OFFERED
NAME   HEREBY (1)   OUTSTANDING   OFFERING   HEREBY (1)

 
 
 
 
Sphinx Convertible Arbitrage c/o Forest Investment Management LLC
    117,000       *               1,334  
State Street Bank Custodian for GE Pension Trust
    1,856,000       *               21,176  
Zurich Master Hedge Fund c/o Forest Investment Management LLC
    701,000       *               7,998  


*   Less than one percent.
 
(1)   The number of shares of common stock owned prior to the offering includes shares of common stock into which the notes are convertible. The number of shares of common stock offered hereby is based on a conversion rate of 11.410 shares of common stock per $1,000 principal amount of maturity of the notes. Information concerning other Selling Securityholders will be set forth in prospectus supplements from time to time, if required. The number of shares of common stock owned by the other Selling Securityholders or any future transferee from any such holder assumes that they do not beneficially own any common stock other than common stock into which the notes are convertible at a conversion rate of 11.410 shares of common stock per $1,000 principal amount of maturity of the notes.

     INVESTING IN THE NOTES OR THE COMMON STOCK ISSUABLE UPON CONVERSION OF THE NOTES INVOLVES A HIGH DEGREE OF RISK. PLEASE CONSIDER THE “RISK FACTORS” BEGINNING ON PAGE 7 OF THE PROSPECTUS.

     NEITHER THE SECURITIES AND EXCHANGE COMMISSION NOR ANY STATE SECURITIES COMMISSION HAS APPROVED OR DISAPPROVED OF THESE SECURITIES OR DETERMINED IF THE PROSPECTUS IS TRUTHFUL OR COMPLETE. ANY REPRESENTATION TO THE CONTRARY IS A CRIMINAL OFFENSE.

The date of this prospectus supplement is February 18, 2003.

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