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SECURITIES AND EXCHANGE COMMISSION
WASHINGTON, D.C. 20549

FORM 10-K

|x | ANNUAL   REPORT PURSUANT TO SECTION 13 OR 15(d)    
|- | ---------------------------------------------------
|  | OF THE   SECURITIES EXCHANGE ACT OF 1934           
|  |                                                    
|o | TRANSITION   REPORT PURSUANT TO SECTION 13 OR 15(d)
|  | OF THE   SECURITIES EXCHANGE ACT OF 1934           

|For the fiscal year ended December 31, 2005 | Commission file number 1-800
|------------------------------------------- | ----------------------------

WM. WRIGLEY JR. COMPANY
(Exact name of registrant as specified in its charter)

|Delaware                                                           |  | 36-1988190                                      
|------------------------------------------------------------------ |  | ------------------------------------------------
|(State or   other jurisdiction of   incorporation or organization) |  | (I.R.S.   Employer   Identification No.)        
|                                                                   |  |                                                 
|410 North Michigan Avenue   Chicago, Illinois                      |  | 60611                                           
|(Address   of principal executive offices)                         |  | (Zip Code)                                      
|                                                                   |  |                                                 
|Registrants telephone number, including Area Code:                |  | (312) 644-2121                                  
|                                                                   |  |                                                 
|Securities registered pursuant to Section 12(b) of the Act:        | 
|                                                                   |  |                                                 
|                                                                   |  |                                                 
|Title of each class                                                |  | Name of each exchange on   which registered     
|                                                                   |  |                                                 
|Common   Stock, no par value                                       |  | New York   Stock Exchange Chicago Stock Exchange
|                                                                   |  |                                                 
|Securities registered pursuant to Section 12(g) of the Act:        | 
|                                                                   |  |                                                 
|Title of each class                                                |  |                                                 
|                                                                   |  |                                                 
|Class B   Common Stock, no par value                               |  |                                                 

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Indicate by check mark if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act.

|Yes
x | No
o
|----- | ----

Indicate by check mark if the registrant is not required to file reports pursuant to  Section 13 or 15(d) of the Securities Exchange Act.

|Yes
o | No
x
|----- | ----

Indicate by check mark whether the Registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the Registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.

|Yes
x | No
o
|----- | ----

Indicate by check mark if disclosure of delinquent filers pursuant to Item 405 of Regulation S-K (Section 229.405 of this chapter) is not contained herein, and will not be contained, to the best of registrants knowledge, in definitive proxy or information statements incorporated by reference in Part III of this Form 10-K or any amendment to this Form 10-K.
x

Indicate by check mark whether the Registrant is a large accelerated filer, an accelerated filer, or a non-accelerated filer. See definition of accelerated filer and large accelerated filer in Rule 12b-2 of the Exchange Act. (Check one):

|Large accelerated filer | x | Accelerated filer | o | Non-accelerated filer | o
|----------------------- | - | ----------------- | - | --------------------- | -

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Securities Exchange Act of 1934).

|Yes
o | No
x
|----- | ----

As of June 30, 2005, there were outstanding 191,866,690 of Common Stock, no par value, and the aggregate market value of the Common Stock (based upon the closing price of the stock on the New York Stock Exchange on June 30, 2005) held by non-affiliates was approximately $10,185,461,075. As of June 30, 2005, there were outstanding 33,370,274 shares of Class B Common Stock, no par value. Class B Common Stock carries 10 votes per share, is not traded on the exchanges, is restricted as to transfer or other disposition, and is convertible into Common Stock on a share-for-share basis. Upon such conversion, the resulting shares of Common Stock are freely transferable and publicly traded. Assuming all shares of outstanding Class B Common Stock were converted into Common Stock, the aggregate market value of Common Stock held by non-affiliates on June 30, 2005 (based upon the closing price of the stock on the New York Stock Exchange on such
date) would have been approximately $10,755,525,252. Determination of stock ownership by non-affiliates was made solely for the purpose of this requirement, and the Registrant is not bound by these determinations for any other purpose.

As of February 6, 2006 there were outstanding 188,657,249 shares of Common Stock, no par value, and the aggregate market value of the Common Stock (based upon the closing price of the stock on the New York Stock Exchange on February 6, 2006) held by non-affiliates was approximately $10,096,009,856. As of February 6, 2006, there were outstanding 33,165,293 shares of Class B Common Stock, no par value. Class B Common Stock carries ten votes, is not traded on the exchanges, is restricted as to transfer or other disposition, and is convertible into Common Stock on a share-for-share basis. Upon such conversion, the resulting shares of Common Stock are freely transferable and publicly traded. Assuming all shares of outstanding Class B Common Stock were converted into Common Stock, the aggregate market value of Common Stock held by non-affiliates on February 6, 2006 (based upon the closing price of the stock on the New York Stock Exchange on
such date) would have been approximately $10,618,543,918. Determination of stock ownership by non-affiliates was made solely for the purpose of this requirement, and the Registrant is not bound by these determinations for any other purpose.

DOCUMENTS INCORPORATED BY REFERENCE

Portions of the Registrants Notice of Annual Meeting and Proxy Statement, dated February 16, 2006, for the April 4, 2006 Annual Meeting of Stockholders (the Companys Proxy Statement), and Annual Report to Stockholders for the fiscal year ended December 31, 2005 (the Companys 2005 Annual Report), are incorporated by reference into portions of Parts I, II, III and IV of this Report.

2



PART I

Item 1. Business

(a) General Development of Business.

(1) General information. From 1891 to 1903, the Company was operated as a partnership until its incorporation in Illinois as Wm. Wrigley Jr. Co. in December 1903. In November 1910, the Company was reincorporated under West Virginia law as Wm. Wrigley Jr. Company (the Company), and in October 1927, was reincorporated under the same name under Delaware law.

The Company has concentrated on one principal line of business: manufacturing and marketing quality confectionery products, primarily chewing gum.

The Company recently diversified its business within the broader confectionery category. To this end, the Company, in 2004, acquired certain confectionery businesses of the Joyco Group from Agrolimen  - a privately-held Spanish conglomerate. This acquisition is strengthening the Companys operations in key geographies including Spain, India and China through a broader confectionery brand portfolio, access to additional distribution channels and enhanced manufacturing capabilities. In 2005, the Company completed its acquisition of certain non-chocolate confectionery assets from Kraft Foods Global, Inc. Additional information relating to the acquisition of certain confectionery businesses of the Joyco Group, and certain non-chocolate confectionery assets from Kraft Foods Global, Inc., is set forth on pages  48 and 49 of the Companys 2005 Annual Report under the caption acquisitions and is
incorporated herein by reference.

In 2005, the Company issued senior unsecured notes and commercial paper in order to facilitate the acquisition of certain non-chocolate confectionery assets from Kraft Foods Global, Inc.   Additional information regarding the Companys debt in this regard is set forth on page 46 of the Companys Annual Report under the caption Long-term Debt and is incorporated herein by reference.

In 2005, the Company announced plans to restructure its North American production network in order to maximize supply chain efficiencies.  As a result, the Company plans to close its chewing gum plant in Chicago, Illinois and its L.A. Dreyfus gum base subsidiary in Edison, New Jersey, transferring production to remaining facilities.  Additional information regarding the Companys restructuring plans is set forth on page 50 of the Companys Annual Report under the caption restructuring and is incorporated herein by reference.

(2) Not applicable.

(b) Financial Information About Industry Segments.

The Companys principal business is manufacturing and marketing chewing gum and other confectionery products worldwide. All other businesses constitute less than 10% of its consolidated revenues, operating profit and identifiable assets. Financial information on segments, as defined under U.S. generally accepted accounting principles, is set forth on pages 58 and 59 of the Companys 2005 Annual Report under the caption segment information, which information is incorporated herein by reference.

(c) Narrative Description of Business.

(1) Business conducted. The following is a description of the business conducted and intended to be conducted by the Company and its wholly-owned associated companies:

(i) Principal products, markets and methods of distribution. The Companys principal business is manufacturing and selling chewing gum and other confectionery products, both in the United States and abroad.

Information concerning the Companys current and new products for the year ended December 31, 2005 is hereby incorporated by reference from the inside back cover of the Companys 2005 Annual Report.

In 2005, the Companys ten largest revenue producing countries outside of the United States were, in alphabetical order: Australia, Canada, China, France, Germany, Poland, Russia, Spain, Taiwan and the United Kingdom.

Chewing gum and other confectionery products are manufactured in four factories in the United States and sixteen factories in other countries. Two domestic wholly-owned associated companies, L.A. Dreyfus Company and Northwestern Flavors, LLC, manufacture products, gum base and mint oil, respectively, other than chewing gum or confectionery products. In addition, four foreign facilities also manufacture gum base for the Companys international production facilities and for third party gum product manufacturers.

3



The Company markets chewing gum and other confectionery products primarily through distributors, wholesalers, corporate chains and cooperative buying groups that distribute the product through retail outlets. Additional direct customers are vending distributors, concessionaires and other established customers purchasing in wholesale quantities. Customer orders are usually received electronically, by mail, telephone or telefax and are generally shipped by truck from factory warehouses or leased warehousing facilities. Consumer purchases at the retail level are generated primarily through the Companys advertisements on television as well as in newspapers and magazines.

(ii) Sources and availability of raw materials. Raw materials blended to make chewing gum are readily available in the open market and they include sugar, corn syrup, flavoring oils, polyols and high intensity sweeteners. Other ingredients and necessary packaging materials are also available and purchased in the open market.

(iii) Patents and trademarks. The Company holds numerous patents and patent applications relating to packaging, manufacturing processes and product formulas. Approximately sixty patents relating to packaging, chewing gum confection processing, product formula and sweetener encapsulation, primarily for sugar-free gum and continuous chewing gum manufacturing, are deemed of material importance to the Company. Most of these patents expire in the countries in which they are registered at various times through the year 2021.

Trademarks are of material importance to the Company and are registered and maintained for all brands of the Companys chewing gum and confectionery products on a worldwide basis as appropriate.

(iv) Seasonality. On a consolidated basis, sales are relatively consistent throughout the year.

(v) Working capital items. Inventory requirements of the Company are not materially affected by seasonal or other factors. In general, the Company does not offer its customers extended payment terms. The Company believes these conditions are not materially different from those of its competitors.

(vi) Customers. The Companys products are distributed through more than 1,600 direct customers throughout the United States alone. No single domestic or foreign customer accounts for as much as 10% of consolidated revenues.

(vii) Orders. It is typical for the general customer of the wholesale trade to purchase chewing gum and other confectionery requirements at intervals of approximately ten days to two weeks to assure fresh stocks and good turnover.

(viii) Government business. The Company has no material portion of its business, which may be subject to renegotiation of profits or termination of contracts at the election of the Government.

(ix) Competitive conditions.

The confectionery business is an intensely competitive one in the United States and in most international marketplaces as all of the Companys brands compete for retail shelf space with other advertised and branded products. The Company competes in over 180 countries and territories. In most marketplaces, there are two or three major competitors and generally half a dozen or more other companies competing for a share of the confectionery business. In the chewing gum category, the Company is a worldwide leader, accounting for approximately 63% of the total chewing gum product unit sales sold in the United States alone, according to outside sources (i.e., Nielsen, IRI). The Company competes primarily with Cadbury Adams (a division of Cadbury Schweppes) in the chewing gum category and with Cadbury Adams, Masterfoods and Hershey, in other non-chocolate categories, mainly hard and chewy candy including mints.

The continued growth of alternative store formats, product and packaging innovations, technological advances, and new industry techniques have all added additional variables for companies in the confectionery industry to consider in order to remain competitive. In all areas in which the Company distributes its products, principal elements of competition are a combination of competitive profit margins to the trade, level of product quality, brand recognition, product benefit and a fair consumer price. Positive factors pertaining to the Companys competitive position include well-recognized brands, strong brand management, varied product offerings, product innovation, and a strong distribution network.

(x) Research and development. The Company has for many years maintained an active in-house research and development program, and has also contracted outside services for developing and improving Wrigley products, machinery and operations. Information relating to the cost incurred by the Company for research and development in each of the last three fiscal years is set forth on page 43 of the Companys 2005 Annual Report under the caption Research and Development and is incorporated herein by reference.

(xi) Compliance with environmental laws. Compliance with federal, state and local laws regulating the discharge of materials into the environment, or otherwise relating to the protection of the environment, has no material effect on capital expenditures, earnings or the competitive position of the Company.

(xii) Employees. As of December 31, 2005, the Company employed approximately 14,300 persons worldwide.

4



(d) Financial Information About Foreign and Domestic Operations and Export Sales.

Information concerning the Companys operations in different geographic areas for the years ended December 31, 2005, 2004, and 2003 is hereby incorporated by reference from the Companys 2005 Annual Report on pages 58 and 59 , under the caption segment information, and on pages 20 through 23 under the caption Results of Operations.

(e) Available Information.

Information
regarding the Companys annual reports on Form 10-K, quarterly reports on
Form 10-Q, current reports on Form 8-K, and any amendments to these reports,
will be made available in print, free of charge, to any stockholder who request
them, or at the Companys internet website at www.wrigley.com, as soon as
reasonably practicable after the Company electronically files such reports with
or furnishes them to the Securities and Exchange Commission.

In addition,
information regarding the Companys corporate governance guidelines
(Principles of Corporate Governance) and code of ethics (Code of Business
Conduct), and the charters of the Companys Audit, Compensation and
Corporate Governance Committees, are available free of charge also on the
above-mentioned Companys website or in print to any shareholder who request
them.

Item 1A. Risk Factors.

Significant factors that could impact the Companys business operations include, without limitation, the following:

| |  | Availability or retention of retail space -In those countries where we maintain market leadership   in the chewing gum segment, our ability to retain preferred retail space   allocation will impact results, and if we are not able to retain this   allocation, our results could be negatively impacted.                                                                             
| | - | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
| |   |                                                                                                                                                                                                                                                                                                                                                                                          
| |  | Availability of raw materials -Failure   to maintain the availability, pricing and sourcing of raw materials could   negatively impact results.                                                                                                                                                                                                                                          
| |   |                                                                                                                                                                                                                                                                                                                                                                                          
| |  | Changes in demography and consumer  preferences -We   market our products to different segments of the population.  Failure to adequately anticipate and react   to changing demographics and product preferences could negatively impact   results.                                                                                                                                     
| |   |                                                                                                                                                                                                                                                                                                                                                                                          
| |  | Changes in foreign currency and markets   conditions -Both manufacturing and sales of a   significant portion of our products are outside the United States and could   be negatively impacted by volatile foreign currencies and geographies.                                                                                                                                           
| |   |                                                                                                                                                                                                                                                                                                                                                                                          
| |  | Changes in product performance and   competition -We compete worldwide with other   well-established manufacturers of confectionery products, including chewing   gum.  Our results may be negatively   impacted by a failure of new or existing products to be favorably received,   by ineffective advertising, or by failure to sufficiently counter aggressive   competitive actions.
| |   |                                                                                                                                                                                                                                                                                                                                                                                          
| |  | Underutilization of or inadequate   manufacturing capacity -Underutilization of or   inadequate manufacturing capacity due to unanticipated movements in consumer   demands could negatively impact manufacturing efficiencies and costs.                                                                                                                                                
| |   |                                                                                                                                                                                                                                                                                                                                                                                          
| |  | Discounting and other competitive actions -Discounting and other competitive actions may make   it more difficult for us to maintain our operating margins.                                                                                                                                                                                                                              
| |   |                                                                                                                                                                                                                                                                                                                                                                                          
| |  | Governmental regulations -Governmental   regulations with respect to import duties, tariffs, taxes and environmental   controls, both in and outside the U.S., could negatively impact our costs and   ability to compete in domestic or foreign marketplaces.                                                                                                                           
| |   |                                                                                                                                                                                                                                                                                                                                                                                          
| |  | Labor stoppages -To   the extent we could experience any material labor stoppages, such disputes or   strikes could negatively affect shipments from suppliers or shipments of   finished product.                                                                                                                                                                                       
| |   |                                                                                                                                                                                                                                                                                                                                                                                          
| |  | Outcome of integrating Kraft assets   acquired -Our ability to successfully integrate   certain confectionery assets of Kraft Foods Global, Inc. could cause actual   results to differ from anticipated results or expectations of the Companys   business.                                                                                                                            
| |   |                                                                                                                                                                                                                                                                                                                                                                                          
| |  | Political, economic and social instabilityWhile   the countries in which we operate tend to be politically, socially and   economically stable, to the extent there is political or social unrest, civil   war, terrorism or significant economic instability, the results of our   business in such countries could be negatively impacted.                                             

5



Additional significant factors that may affect the Companys operations, performance, development business results include the risks and uncertainties listed from time to time in the Companys filings with the Securities and Exchange Commission and the risk factors or uncertainties listed herein or listed in any document incorporated by reference herein.

The factors identified above are believed to be significant factors, but not necessarily all of the significant factors, that could impact the Companys business.  Unpredictable or unknown factors could also have material effects on us.

Item 1B. Unresolved Staff Comments.

None.

Item 2. Properties.

The information below relates to the principal properties of the Company, which are primarily devoted to confectionery production or raw materials processing. The Company considers the properties listed below to be in good condition, well maintained and suitable to carry out the Companys business. All properties are owned by the Company unless otherwise indicated.

|PROPERTY   AND LOCATION        |  | TYPES OF   PRODUCT                       
|------------------------------ |  | -----------------------------------------
|                               |  |                                          
|FACTORIES                      |  |                                          
|                               |  |                                          
|North America Region           |  |                                          
|Chicago,   Illinois            |  | Gum                                      
|Gainesville,   Georgia         |  | Gum                                      
|Yorkville,   Illinois          |  | Gum and   Candy                          
|Chattanooga,   Tennessee       |  | Candy                                    
|                               |  |                                          
|Don Mills,   Ontario, Canada   |  | Gum                                      
|West   Chicago, Illinois       |  | Raw   materials  flavors                
|Edison, New   Jersey           |  | Raw   materials - gum base               
|                               |  |                                          
|EMEAI Region                   |  |                                          
|                               |  |                                          
|Plymouth,   England            |  | Gum                                      
|Bridgend,   Wales              |  | Candy                                    
|Biesheim,   France             |  | Gum, candy   and raw materials  gum base
|Poznan,   Poland               |  | Gum and   candy                          
|St.   Petersburg, Russia       |  | Gum and   candy                          
|Bangalore,   India             |  | Gum                                      
|Baddi, India                   |  | Gum and   candy                          
|Nairobi,   Kenya               |  | Gum                                      
|Tarazona,   Spain (a)          |  | Gum and   candy                          
|Santiga,   Spain (b)           |  | Raw material   - gum base                
|                               |  |                                          
|Asia Region                    |  |                                          
|Guangzhou,   China, P.R.C. (c) |  | Gum                                      
|Panyu, China   (c)             |  | Gum and   candy                          
|Antipolo,   Philippines        |  | Gum                                      
|Taipei,   Taiwan, R.O.C.       |  | Gum                                      
|Shanghai,   China (c)          |  | Raw   materials - gum base               
|Wuzhou, China   (c)            |  | Raw   materials - gum base               
|                               |  |                                          
|Pacific Region                 |  |                                          
|                               |  |                                          
|Asquith,   N.S.W., Australia   |  | Gum                                      
|                               |  |                                          
|Latin America Region           |  |                                          
|                               |  |                                          
|Silao,   Mexico                |  | Gum                                      

6



|OFFICE   BUILDINGS                                 
|---------------------------------------------------
|                                                   
|Wrigley   Building, Chicago, Illinois (d)          
|EMEAI   Regional Offices, Unterhaching, Germany (d)
|                                                   
|RESEARCH AND   DEVELOPMENT CENTER/OFFICE           
|                                                   
|Global   Innovation Center, Chicago, Illinois (e)  

|   
|---
|(a)
|   
|(b)
|   
|(c)
|   
|   
|   
|   
|   
|   
|   
|   
|   
|(d)
|   
|(e)

In the case of each factory listed above, the information also includes some office and warehouse facilities. Also, the Company maintains primarily leased branch sales offices and warehouse facilities in the United States and abroad.

Item 3. Legal Proceedings.

None.

Item 4. Submission of Matters to a Vote of Security Holders.

None.

7



Executive Officers of the Registrant.

All officers are elected for a term, which ordinarily expires on the date of the meeting of the Board of Directors following the Annual Meeting of Stockholders. The positions and ages listed below are as of December 31, 2005. There were no arrangements or understandings between any of the officers and any other person(s) pursuant to which such officers were elected.

|Name and   Age             |  | Position(s)   with Registrant                                                           |  | Effective   Date(s)
|-------------------------- |  | --------------------------------------------------------------------------------------- |  | -------------------
|                           |  |                                                                                         |  |                    
|William   Wrigley, Jr., 42 |  | Chairman of   the Board, President and Chief Executive Officer                          |  | since 2004         
|                           |  | President   and Chief Executive Officer                                                 |  | 1999-2003          
|                           |  | Vice   President                                                                        |  | 1992-1999          
|                           |  | Vice   President & Assistant to the President                                           |  | 1991-1992          
|                           |  | Assistant to   the President                                                            |  | 1985-1991          
|                           |  |                                                                                         |  |                    
|John Adams,   59 (a)       |  | Vice   President, Manufacturing  International                                         |  | since 2005         
|                           |  |                                                                                         |  |                    
|Donald E.   Balster, 61    |  | Vice   President - Manufacturing                                                        |  | since 2005         
|                           |  | Vice   President - Worldwide Manufacturing                                              |  | 1999-2005          
|                           |  | Vice   President - Production                                                           |  | 1994-1999          
|                           |  | Senior   Director - U.S. Production                                                     |  | 1991-1994          
|                           |  |                                                                                         |  |                    
|Frank   Birkel, 42 (b)     |  | Vice   President and Managing Director - West Europe                                    |  | since 2005         
|                           |  |                                                                                         |  |                    
|Vincent C.   Bonica, 60    |  | Vice   President - Worldwide Gum Base Operations                                        |  | since 2004         
|                           |  | Vice   President - Organizational Development                                           |  | 2001-2004          
|                           |  | President,   L.A. Dreyfus, Inc.                                                         |  | 1991-2000          
|                           |  | Various   executive and management positions within the L.A. Dreyfus, Inc. organization |  | 1970-1991          
|                           |  |                                                                                         |  |                    
|A. Rory   Finlay, 44       |  | General   Manager - New Confectionery Brands                                            |  | since 2005         
|                           |  | Senior   Director - Global Branding                                                     |  | 2001-2004          
|                           |  | Senior   Director - Consumer Marketing                                                  |  | 2000-2001          
|                           |  |                                                                                         |  |                    
|Reuben   Gamoran, 45       |  | Vice   President and Chief Financial Officer                                            |  | since 2004         
|                           |  | Vice   President and Controller                                                         |  | 2001-2003          
|                           |  | Controller                                                                              |  | 1999-2001          
|                           |  | Controller-International                                                                |  | 1996-1999          
|                           |  |                                                                                         |  |                    
|Peter   Hempstead, 54      |  | Senior Vice   President - Worldwide Strategy & New Business                             |  | since 2004         
|                           |  | Senior Vice   President - International                                                 |  | 1999-2003          
|                           |  |                                                                                         |  |                    
|Donagh   Herlihy, 42       |  | Vice President   - Chief Information Officer                                            |  | since 2000         
|                           |  |                                                                                         |  |                    
|Philip C.   Johnson, 60    |  | Vice   President - People, Learning & Development                                       |  | since 2003         
|                           |  | Senior   Director, Benefits & Compensation                                              |  | 1995-2003          
|                           |  | Assistant   Vice President-Personnel                                                    |  | 1991-1995          
|                           |  |                                                                                         |  |                    
|Shaun Kim,   62            |  | Retired                                                                                 |  | since 2006         
|                           |  | Vice   President - Worldwide Engineering                                                |  | 1999 - 2005        
|                           |  | Vice   President - Engineering                                                          |  | 1994-1999          
|                           |  | Senior   Director - Engineering                                                         |  | 1988-1994          
|                           |  |                                                                                         |  |                    
|Surinder   Kumar, 61 (c)   |  | Senior Vice   President & Chief Innovation Officer                                      |  | since 2003         
|                           |  | Chief   Innovation Officer                                                              |  | 2001-2003          

8



|Name and   Age                |  | Position(s)   with Registrant                                       |  | Effective   Date(s)
|----------------------------- |  | ------------------------------------------------------------------- |  | -------------------
|                              |  |                                                                     |  |                    
|Howard   Malovany, 55         |  | Vice   President, Secretary and General Counsel                     |  | since 2001         
|                              |  | Secretary   and General Counsel                                     |  | 1998-2001          
|                              |  | Assistant   Secretary & Senior Counsel                              |  | 1996-1998          
|                              |  |                                                                     |  |                    
|Patrick   Mitchell, 50 (d)    |  | Vice   President - Worldwide Procurement                            |  | since 2002         
|                              |  |                                                                     |  |                    
|Jon Orving,   56              |  | Vice   President - Nordic                                           |  | since 2005         
|                              |  | Vice   President - International & Managing Director - North Region |  | 2001-2005          
|                              |  | Vice   President - International                                    |  | 1993-2001          
|                              |  | Managing   Director, Wrigley Scandinavia AB, Sweden                 |  | 1983-1993          
|                              |  |                                                                     |  |                    
|Dushan   Petrovich, 52        |  | Senior Vice   President & Chief Administrative Officer              |  | since 2004         
|                              |  | Senior Vice   President - People, Learning and Development          |  | 2002-2003          
|                              |  | Vice   President - People, Learning and Development                 |  | 2001-2002          
|                              |  | Vice   President                                                    |  | 2000-2001          
|                              |  | Vice   President - Organizational Development                       |  | 1999-2000          
|                              |  | Vice   President - Controller                                       |  | 1996-1999          
|                              |  | Vice   President - Treasurer                                        |  | 1993-1996          
|                              |  | Treasurer                                                           |  | 1992               
|                              |  |                                                                     |  |                    
|Stefan   Pfander, 62          |  | Retired                                                             |  | since 2006         
|                              |  | Vice   President and Chairman - Europe                              |  | 2004-2005          
|                              |  | Vice   President - International & Managing Director - EMEAI        |  | 2003               
|                              |  | Vice   President - International & Managing Director - Europe       |  | 1996-2003          
|                              |  | Vice   President - International                                    |  | 1992-1996          
|                              |  | Co-Managing   Director of Wrigley GmbH, Munich, Germany             |  | 1981-1992          
|                              |  |                                                                     |  |                    
|Alan J.   Schneider, 60       |  | Vice   President and Treasurer                                      |  | since 2001         
|                              |  | Treasurer                                                           |  | 1996-2001          
|                              |  |                                                                     |  |                    
|Ralph P.   Scozzafava, 47 (e) |  | Vice   President & Managing Director - North America/Pacific        |  | since 2004         
|                              |  | Vice   President - General Manager  U.S.                           |  | 2002-2003          
|                              |  | Vice   President - U.S. Sales and Customer Marketing                |  | 2001-2002          
|                              |  |                                                                     |  |                    
|Michael F.   Wong, 52         |  | Vice   President and Managing Director - Asia                       |  | since 2005         
|                              |  | Vice   President - International & Managing                         |  | 2000-2005          
|                              |  | Director -   Asia                                                   |  | 1998-2000          
|                              |  | Regional   Managing Director - North Asia                           |  |                    
|                              |  |                                                                     |  |                    
|Darrell R.   Splithoff, 56    |  | Senior Vice   President - Worldwide Supply Chain                    |  | since 2004         
|                              |  | Senior Vice   President - Supply Chain & Corporate Development      |  | 2001-2003          
|                              |  | Vice   President - Supply Chain & Corporate Development             |  | 2000-2001          
|                              |  |                                                                     |  |                    
|Ronald V.   Waters, 53        |  | Chief Operating Officer                                             |  | since 2004         
|                              |  | Senior Vice   President  & Chief Financial   Officer                |  | 1999-2003          
|                              |  |                                                                     |  |                    
|Igor   Saveliev, 44 (f)       |  | Vice   President and Managing Director  East and Central Europe    |  | since 2005         

9



|Denis   Schrey, 42(g)     |  | Vice   President and Managing Director - North Europe |  | since 2005
|------------------------- |  | ----------------------------------------------------- |  | ----------
|                          |  |                                                       |  |           
|Tawfik   Sharkasi, 55 (h) |  | Vice   President - Research & Development             |  | since 2005
|                          |  |                                                       |  |           
|Samson Suen,   56 (i)     |  | Vice   President and Managing Director - China        |  | since 2005
|                          |  |                                                       |  |           

| | (a) | Mr. Adams   was elected Vice President, Manufacturing - International in 2005.  Mr. Adams joined the Company in 1999 as   Senior Director, Manufacturing Operations in the Europe, Middle East and   Africa (EMEAI), with responsibility for all regional factories, and in 2001,   served as Senior Director, Supply Chain, with responsibilities for supply chain   operations within the Companys manufacturing organizations.  Prior to joining the Company, Mr. Adams   was employed by Diageo from 1995 to 1999, most recently as Senior Vice   President, Operations - North America.                                                              
| | --- | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
| |     |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
| | (b) | Mr. Birkel   was elected Vice President and Managing Director - West Europe in 2005.  Mr. Birkel joined the Company in 2001 as   Managing Director - Germany, with responsibility for the Companys commercial business   within Germany. Until his present position, Mr. Birkel served the Company as   Regional Vice President - West Europe between 2004 and 2005.  Prior to joining the Company, he was   employed by Procter & Gamble from 1992 to 2001, most recently as   Marketing Director, Laundry & Cleaning for several European countries.                                                                                                    
| |     |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
| | (c) | Dr. Kumar   joined the Company in 2001 as Chief Innovation Officer, and in 2003 was   elected Senior Vice President & Chief Innovation Officer with   responsibility for worldwide research and development, product and technical   development, quality assurance, and regulatory affairs.  Before joining the Company, from   1998-2000, Dr. Kumar was Senior Vice President, Research and Development for   Bristol Myers Squibb, and from 1995-1998, Dr. Kumar held the position of   Senior Vice President, Research and Development/Quality for Pepsi Company   Restaurants International.                                                          
| |     |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
| | (d) | Mr. Mitchell   joined the Company in 2002 as Vice President  Procurement with   responsibility for the Companys global procurement activities.  Before joining the Company, from 1992   through 2002, he held various positions with the Kellogg Company, most   recently as Vice President-Global Procurement.                                                                                                                                                                                                                                                                                                                                          
| |     |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
| | (e) | Mr.   Scozzafava was elected Vice President and Managing Director  North   America/Pacific effective January 1, 2004, heading up the Companys new North   America Group and the Pacific Region.    Mr. Scozzafava joined the Company in 2000 as Vice President  Sales   and Customer Marketing and, in 2002, took the position of Vice President    General Manager - U.S. with responsibility for the sales, marketing, finance   and people, learning and development functions for the Companys U.S.   business.  Mr. Scozzafava held various   executive positions with the Campbells Soup Company for five years prior to   joining the Company.
| |     |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
| | (f) | Mr. Saveliev   was elected Vice President and Managing Director  East and Central Europe in   2005.  Mr. Saveliev joined the Company   in 1995 as General Manager - Russia, with responsibility for improving the Companys   commercial business in Russia. Until his present position, Mr. Saveliev   served the Company as General Manager  EMEAI East (between 2000 and 2004)   and Regional Vice President  East and Central Europe (between   2004-2005).  Prior to joining the   Company, he was employed by Nabisco (1995) and Coca-Cola (1994).                                                                                                
| |     |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
| | (g) | Mr. Schrey   was elected Vice President and Managing Director - North Europe in 2005.  Mr. Schrey joined the Company in 2001 as   Director, Business Development - International, with responsibility for   expanding sales to global customers. Until his present position, Mr. Schrey   served the Company as Regional Managing Director - Pacific (between 2003 and   2004) and Regional Vice President  North Europe (between 2004 and   2005).  Prior to joining the Company,   he was employed by Procter & Gamble from 1989 to 2001, most recently as   Associate Director for Germany, Austria and Switzerland.                                   
| |     |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
| | (h) | Dr. Sharkasi   was elected Vice President - Research & Development in 2005.  Dr. Sharkasi joined the Company in 2004 as   Vice President - Research & Development, Gum, with primary responsibility   for gum development.  Prior to joining   the Company, he was employed by Nestle from 1994 to 2004, most recently as   Director of Research & Development  Ice Cream.                                                                                                                                                                                                                                                                                
| |     |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
| | (i) | Mr. Suen was   elected Vice President and Managing Director - China in 2005.  Mr. Suen joined the Company in 1979 as   Marketing Manager - Hong Kong, became Managing Director - Hong Kong later   that year, and leading up to his present position, Mr. Suen held various   senior management positions in the Companys subsidiaries in Hong Kong,   Indonesia, Taiwan and, most recently, as General Manager of Wrigley China.                                                                                                                                                                                                                         

10



PART II

Item 5. Market for Registrants Common Stock, Dividend and Stockholder Information.

(a) (i) Market Information.

As of December 31, 2005, the Company had two classes of stock outstanding: Common Stock, listed on both the New York and Chicago Stock Exchanges, and Class B Common Stock, for which there is no trading market. Shares of the Class B Common Stock were issued by the Company on April 11, 1986 to stockholders of record on April 4, 1986. Class B Common Stock is entitled to ten votes per share, is subject to restrictions on transfer or other disposition and is, at all times, convertible on a share-for-share basis into shares of Common Stock.

(ii) Holders.

As of December 31, 2005, there were 40,545 stockholders of record holding Common Stock and 2,658 stockholders of record holding Class B Common Stock.

(iii) Dividends.

Dividends, which are identical on both Common Stock and Class B Common Stock, are declared at scheduled meetings of the Board of Directors and announced immediately upon declaration. Information regarding the high and low quarterly sales prices for the Common Stock on the New York Stock Exchange and dividends declared per share on a quarterly basis for both classes of stock for the two-year period ended December 31, 2005 is set forth in the Companys 2005 Annual Report on page 31 under the captions Market Prices and Dividends and is incorporated herein by reference.

(iv) Securities Authorized for Issuance Under Equity Compensation Plans.

The following table provides information for all equity compensation plans as of the fiscal year ended December 31, 2005, under which the equity securities of the Company were authorized for issuance:

|Plan   Category                                              |  | Number of securities to be    issued upon exercise of    outstanding options,    warrants and rights   (a) |           | Weighted average exercise price    of outstanding options,    warrants and rights   (b) |   | Number of securities    remaining available for    future issuance under    equity compensation    plans (excluding    securities reflected in    column (a))   (c) | 
|------------------------------------------------------------ |  | ---------------------------------------------------------------------------------------------------------- | --------- | --------------------------------------------------------------------------------------- | - | ------------------------------------------------------------------------------------------------------------------------------------------------------------------- | 
|                                                             |  |                                                                                                            |           |                                                                                         |   |                                                                                                                                                                     | 
|Equity   compensation plans approved by security holders (1) |  |                                                                                                            | 9,772,525 |                                                                                         | $ | 58.76                                                                                                                                                               | 
|Equity   compensation plans not approved by security holders |  |                                                                                                            |  0      |                                                                                         |   |  0                                                                                                                                                                | 
|Total                                                        |  |                                                                                                            | 9,772,525 |                                                                                         | $ |                                                                                                                                                                     | 

|   
|---
|(1)

Shares awarded under all above plans may be newly issued, from the Companys treasury or acquired in the open market.

(b) Not applicable

11



c) Repurchases of Equity Securities.

|Period                         |  | Total Number of    Shares Purchased    (a) |           | Average Price    Paid Per Share |  | Total Number of Shares Purchased as    Part of Publicly    Announced Share    Repurchase Plan (i)    (b) |  | Approximate Dollar    Value of Shares    that May Yet Be    Purchased Under    the Share    Repurchase    Programs |          
|------------------------------ |  | ------------------------------------------ | --------- | ------------------------------- |  | -------------------------------------------------------------------------------------------------------- |  | ------------------------------------------------------------------------------------------------------------------ | ---------
|                               |  |                                            |           |                                 |  |                                                                                                          |  |                                                                                                                    |          
|October 1st    October 31st   |  |                                            |          |                                 |  |                                                                                                         |  |                                                                                                                    |         
|November 1st    November 30th |  |                                            | 103,000   |                                 |  | 68.92                                                                                                    |  |                                                                                                                    | 103,000  
|December 1st    December 31st |  |                                            | 1,507,000 |                                 |  | 68.19                                                                                                    |  |                                                                                                                    | 1,507,000

|                                                                                                                                                                                                                                                                                                                                                                                                                        
|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|(i)   Represents actual number of shares purchased under the Board of Directors   authorized and publicly announced Share Repurchase Program resolution of   August 18, 2004, to purchase up to $300,000,000 of shares, in the open   market. At December 31, 2005, $128,733,000 remains available for repurchase   under the Programs. The Programs will expire when the authorized amounts are   completely utilized.

Item 6. Selected Financial Data.

An eleven-year summary of selected financial data for the Company is set forth in the Companys 2005 Annual Report under the following captions and page numbers: Operating Data and Other Financial Data on pages 32 and 33 and is incorporated herein by reference.

Item 7. Managements Discussion and Analysis of Financial Condition and Results of Operations.

Managements discussion and analysis of results of operations and financial condition, including a discussion of liquidity and capital resources and the accompanying forward looking and cautionary statements, is set forth in the Companys 2005 Annual Report on pages 19 through 29 and is incorporated herein by reference.

Item 7A. Quantitative and Qualitative Disclosures About Market Risk.

Disclosure about market risk is set forth on pages 27 and 28 of the Companys 2005 Annual Report under the heading Market Risk and is incorporated herein by reference.

Item 8. Financial Statements and Supplementary Data.

The Companys audited consolidated financial statements, accounting policies and notes to consolidated financial statements, with the reports of management and the independent registered public accounting firm, at December 31, 2005 and 2004 and for each of the three years in the period ended December 31, 2005, are set forth in the Companys 2005 Annual Report on pages 34 through 59, and selected unaudited quarterly data-consolidated results for the years ended December 31, 2005 and 2004 are set forth in the Companys 2005 Annual Report on page 30 under the caption Quarterly Data, and all such pages are incorporated herein by reference.

Item 9. Changes in and Disagreements with Accountants on Accounting and Financial Disclosure.

None.

Item 9A. Controls and Procedures.

(i) Disclosure Controls and Procedures.

The
Companys Chief Executive Officer and Chief Financial Officer conducted an
evaluation of the effectiveness of the Companys disclosure controls and
procedures. Based on that evaluation, the Chief Executive Officer and Chief
Financial Officer concluded that the Companys disclosure controls and
procedures were effective as of December 31, 2005.

(ii) Internal Control Over Financial Reporting.

(a) Managements annual report on internal control over financial reporting.

The Companys management report on internal control over financial reporting is set forth in the Companys 2005 Annual Report on page 34 and is incorporated herein by reference.

12



(b) Attestation report of the registered public accounting firm.

The report of Ernst & Young LLP, the Companys independent registered public accounting firm, on managements assessment of the effectiveness of the Companys internal control over financial reporting and the effectiveness of the Companys internal control over financial reporting is set forth in the Companys 2005 Annual Report on page 35 and is incorporated herein by reference.

(c) Changes in internal control over financial reporting.

There was no change in the Companys internal control over financial reporting during the Companys fourth fiscal quarter ended December 31, 2005 that has materially affected, or is reasonably likely to materially affect, the Companys internal control over financial reporting.

PART III

Item 10. Directors and Executive Officers of the Registrant.

Information regarding directors and nominees for directorship is set forth in the Companys Proxy Statement on pages 5 through 8 under the caption Election of Class I Directors and is incorporated herein by reference. For information concerning the Companys executive officers, see Executive Officers of the Registrant set forth in Part I hereof.

Item 11. Executive Compensation.

Information regarding the compensation of directors and executive officers is set forth in the Companys Proxy Statement on pages 14 through 16, and 47 through 58 under the general captions Compensation of Directors and Executive Compensation, respectively, and is incorporated herein by reference.

Item 12. Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters.

Information regarding security ownership of certain beneficial owners, of all directors and nominees, of the named executive officers, and of directors and executive officers as a group, is set forth in the Companys Proxy Statement on pages 17 through 19 under the captions Security Ownership of Directors and Executive Officers and Security Ownership of Certain Beneficial Owners and is incorporated herein by reference.

Item 13. Certain Relationships and Related Transactions.

Information regarding certain relationships is hereby incorporated by reference from the Companys Proxy Statement on pages 18 and 19 under the heading Security Ownership of Certain Beneficial Owners.

Item 14. Principal Accountant Fees and Services.

Information regarding principal accountant fees and services is incorporated by reference from the Companys Proxy Statement on page 60 under the heading Service Fees Paid to the Independent Registered Public Accounting Firm.

PART IV

Item 15. Exhibits and  Financial Statement Schedules.

(a)1 and 2. Financial Statements and Financial Statement Schedule

The data listed in the accompanying Index to Financial Statements and Financial Statement Schedule, on Pages F-1 and F-2 hereof, are filed as part of this Report.

3. Exhibits

The exhibits listed in the accompanying Index to Exhibits, on page F-3 hereof, are filed as part of this Report or are incorporated by reference herein as indicated thereon.

(b)Exhibits are attached hereto

(c)See (a) 1 and 2 above.

13



SIGNATURES

Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, as amended, the Registrant has duly caused this Form 10-K Report to be signed on its behalf by the undersigned, thereunto duly authorized.

|Date: February   16, 2006 | WM. WRIGLEY   JR. COMPANY
|------------------------- | -------------------------
|                          |                          
|                          |                          
|                          |                          
|                          | By:                      
|                          |                          
|                          |                          
|                          |                          

Pursuant to the requirements of the Securities Exchange Act of 1934, as amended, this Report on Form 10-K has been signed below by the following persons on behalf of the Registrant and in the capacities and on the dates indicated.

|Signature                |  | Title                                                          |                           |                                
|------------------------ |  | -------------------------------------------------------------- | ------------------------- | -------------------------------
|                         |  |                                                                |                           |                                
|/s/ WILLIAM WRIGLEY, JR. |  | Chairman of   the Board, President and Chief Executive Officer |                           |                                
|                         |  |                                                                |                          
|William Wrigley, Jr.     |  |                                                                |                           |                                
|                         |  |                                                                |                           |                                
|/s/ RONALD V. WATERS     |  | Chief   Operating Officer                                      |                           |                                
|                         |  |                                                                |                           |                                
|Ronald V. Waters         |  |                                                                |                           |                                
|                         |  |                                                                |                           |                                
|/s/ REUBEN GAMORAN       |  | Vice   President and Chief Financial Officer                   |                           |                                
|                         |  |                                                                |                          
|Reuben Gamoran           |  |                                                                |                           |                                
|                         |  |                                                                |                           |                                
|/s/ DUANE PORTWOOD       |  | Controller                                                     |                           |                                
|                         |  |                                                                |                           |                                
|Duane Portwood           |  |                                                                |                           |                                
|                         |  |                                                                |                           |                                
|*                        |  | Director                                                       |                           |                                
|                         |  |                                                                |                           |                                
|John F. Bard             |  |                                                                |                           |                                
|                         |  |                                                                |                           |                                
|*                        |  | Director                                                       |                           |                                
|                         |  |                                                                |                           |                                
|Howard B. Bernick        |  |                                                                |                           |                                
|                         |  |                                                                |                           |                                
|*                        |  | Director                                                       |                           |                                
|                         |  |                                                                |                           |                                
|Thomas A. Knowlton       |  |                                                                |                           |                                
|                         |  |                                                                |                           |                                
|*                        |  | Director                                                       |                           |                                
|                         |  |                                                                |                           |                                
|John Rau                 |  |                                                                |                           |                                
|                         |  |                                                                |                           |                                
|*                        |  | Director                                                       |                           |                                
|                         |  |                                                                |                           |                                
|Melinda R. Rich          |  |                                                                |                           |                                
|                         |  |                                                                |                           |                                
|*                        |  | Director                                                       | *By:                      | /s/ HOWARD   MALOVANY          
|                         |  |                                                                |                           |                                
|Steven B. Sample         |  |                                                                |                           | Howard   Malovany              
|                         |  |                                                                |                           | Vice   President, Secretary and
|*                        |  | Director                                                       |                           | General   Counsel              
|                         |  |                                                                |                           |                                
|Alex Shumate             |  |                                                                | Date: February   16, 2006
|                         |  |                                                                |                           |                                
|*                        |  | Director                                                       |                           |                                
|                         |  |                                                                |                           |                                
|Richard K. Smucker       |  |                                                                |                           |                                

14



EXHIBIT 23

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

We consent to the incorporation by reference in this Annual Report (Form 10-K) of Wm. Wrigley Jr. Company of our reports dated February 3, 2006, with respect to the consolidated financial statements of Wm. Wrigley Jr. Company, Wm. Wrigley Jr. Company managements assessment of the effectiveness of internal control over financial reporting, and the effectiveness of internal control over financial reporting of Wm. Wrigley Jr. Company, included in the 2005 Annual Report to Stockholders of Wm. Wrigley Jr. Company.

Our audits also included the financial statement schedule of Wm. Wrigley Jr. Company listed in Item 15(a). This schedule is the responsibility of Wm. Wrigley Jr. Companys management. Our responsibility is to express an opinion based on our audits. In our opinion, the financial statement schedule referred to above, when considered in relation to the basic financial statements taken as a whole, presents fairly in all material respects the information set forth therein.

We also consent to the incorporation by reference in the Registration Statements pertaining to the Wm. Wrigley Jr. Company  shelf registration of certain securities of Wm. Wrigley Jr. Company (333-123077 (2005)) in Form S-3, the Wrigley Savings Plan for Wrigley Employees (33-15061 (1987) and 33-43738 (1991)) in Form S-8, the Wm. Wrigley Jr. Company Management Incentive Plan (33-22788 (1988)) in Form S-8 and the 1997 Management Incentive Plan (333-48715 (1998)) in Form S-8, respectively, of our reports dated February 3, 2006, with respect to the consolidated financial statements of Wm. Wrigley Jr. Company, Wm. Wrigley Jr. Company managements assessment of the effectiveness of internal control over financial reporting, and the effectiveness of internal control over financial reporting of Wm. Wrigley Jr. Company, incorporated herein by reference and our report included in the preceding paragraph with respect to the financial
statement schedule included in this Annual Report (Form 10-K) of Wm. Wrigley Jr. Company for the year ended December 31, 2005.

| | /s/ ERNST   & YOUNG LLP
| | -----------------------
| |                        
| | Ernst &   Young LLP    

Chicago, Illinois  February 14, 2006

15



WM. WRIGLEY JR. COMPANYINDEX TO FINANCIAL STATEMENTS AND FINANCIAL STATEMENT SCHEDULES (Item 15 (a))

|                                                                                                                                                   |  | Reference           
|-------------------------------------------------------------------------------------------------------------------------------------------------- |  | --------------------
|                                                                                                                                                   |  |                     
|                                                                                                                                                   |  | Form   10-K   Report
|                                                                                                                                                   |  |                     
|Data   incorporated by reference from the Companys Annual Report:                                                                                 |  |                     
|Consolidated balance sheet as of December 31, 2005 and 2004                                                                                        |  |                     
|Consolidated statement of earnings for the years ended December 31,   2005, 2004 and 2003                                                          |  |                     
|Consolidated statement of cash flows for the years ended December 31,   2005, 2004 and 2003                                                        |  |                     
|Consolidated statement of stockholders equity for the years ended   December 31, 2005, 2004 and 2003                                              |  |                     
|Accounting policies and notes to consolidated financial statements                                                                                 |  |                     
|                                                                                                                                                   |  |                     
|Consolidated   financial statement schedule for the years ended December 31, 2005, 2004 and   2003 Schedule II  Valuation and Qualifying Accounts |  | F-2                 

All other schedules are omitted because the required information is not present or is not present in amounts sufficient to require submission of the schedule or because the information required is included in the consolidated financial statements or accounting policy notes thereto.

With the exception of the pages listed in the above index and the Items referred to in Items 1, 5, 6, 7, 8 and 9A of this Form 10-K Report, the Companys 2005 Annual Report is not to be deemed filed as part of this Form 10-K Report.

F-1



WM. WRIGLEY JR. COMPANY  SCHEDULE II - VALUATION AND QUALIFYING ACCOUNTS  YEARS ENDED DECEMBER 31, 2005, 2004 AND 2003 (In Thousands)

|Column A                        |  | Column B                           |        | Column C                          |   | Column D                      |  | Column E                    |   |                 |   |      
|------------------------------- |  | ---------------------------------- | ------ | --------------------------------- | - | ----------------------------- |  | --------------------------- | - | --------------- | - | -----
|                                |  |                                    |        |                                   |   |                               |  |                             |   |                 |   |      
|                                |  |                                    |        | Additions                         |   |                               |  |                             |  
|                                |  |                                    |        |                                   |   |                               |  |                             |  
|Description                     |  | Balance at   Beginning   of Period |        | Charged to   Costs and   Expenses |   | Charged to   Other   Accounts |  | Balance at   Deductions (A) |   | End of   Period |  
|                                |  |                                    |        |                                   |   |                               |  |                             |   |                 |   |      
|2005:                           |  |                                    |        |                                   |   |                               |  |                             |   |                 |   |      
|Allowance for Doubtful accounts |  | $                                  | 11,682 |                                   | $ | 1,193                         |  |                             |  |                 | $ | 4,862
|2004:                           |  |                                    |        |                                   |   |                               |  |                             |   |                 |   |      
|Allowance for Doubtful accounts |  | $                                  | 9,232  |                                   | $ | 3,584                         |  |                             |  |                 | $ | 1,134
|2003:                           |  |                                    |        |                                   |   |                               |  |                             |   |                 |   |      
|Allowance for Doubtful accounts |  | $                                  | 5,850  |                                   | $ | 4,204                         |  |                             |  |                 | $ | 822  

|                                                            
|------------------------------------------------------------
|(A)   Uncollectible accounts written-off, net of recoveries.

F-2



WM. WRIGLEY JR. COMPANY AND WHOLLY OWNED ASSOCIATED COMPANIES INDEX TO EXHIBITS (Item 15 (a))

|Exhibit   Number |      | Description   of Exhibit                                                                                                                                                                                                                                                                                                                          
|---------------- | ---- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|                 |      |                                                                                                                                                                                                                                                                                                                                                   
|                 |      | Proxy Statement of the Registrant, dated
February 16, 2006, for the April 4, 2006 Annual Meeting of Stockholders, is
herein incorporated by reference.                                                                                                                                                                                            
|                 |      |                                                                                                                                                                                                                                                                                                                                                   
|1.               |      | Underwriting   Agreement                                                                                                                                                                                                                                                                                                                          
|                 |      |                                                                                                                                                                                                                                                                                                                                                   
|(a).             |      | Underwriting   Agreement dated July 11, 2005, between Wm. Wrigley Jr. Company and   Goldman Sachs & Co., J.P. Morgan Securities Inc. and Merrill Lynch,   Pierce, Fenner & Smith Incorporated, as representatives of the   Underwriters, is incorporated by reference to Exhibit 99.1 to the Companys   Form 8-K filed on July 14, 2005.         
|                 |      |                                                                                                                                                                                                                                                                                                                                                   
|3.               |      | Articles of   Incorporation and By-laws.                                                                                                                                                                                                                                                                                                          
|                 |      |                                                                                                                                                                                                                                                                                                                                                   
|(a).             | (i)  | Restated   Certificate of Incorporation of Wm. Wrigley Jr. Company, as amended by the   Certificate of Amendment of the Restated Certificate of Incorporation of Wm.   Wrigley Jr. Company dated March 22, 2005, is incorporated by reference to   Exhibit 3(i)(a) to the Companys Form 10-Q filed for the fiscal quarter ended   March 31, 2005;
|                 |      |                                                                                                                                                                                                                                                                                                                                                   
|                 | (ii) | Certificate   of Amendment of the Restated Certificate of Incorporation of Wm. Wrigley Jr.   Company dated March 22, 2005, is incorporated by reference to Exhibit 3(i)(b)   to the Companys Form 10-Q filed for the fiscal quarter ended March 31, 2005.                                                                                        
|                 |      |                                                                                                                                                                                                                                                                                                                                                   
|(b).             |      | By-laws of   the Registrant. The Registrants Amended and Restated By-laws effective March   5, 2002 is incorporated by reference to Exhibit 3(ii) of the Companys   Quarterly Report on Form 10-Q filed for the fiscal quarter ended March 31,   2002.                                                                                          
|                 |      |                                                                                                                                                                                                                                                                                                                                                   
|4.               |      | Instruments   defining the rights of security holders.                                                                                                                                                                                                                                                                                            
|                 |      |                                                                                                                                                                                                                                                                                                                                                   
|4(a).            |      | The   Stockholder Rights Plan is incorporated by reference to Exhibit 4.1 of the   Companys Report on Form 8-K filed June 5, 2001.                                                                                                                                                                                                               
|                 |      |                                                                                                                                                                                                                                                                                                                                                   
|4(b).            |      | Senior   Indenture, dated as of July 14, 2005, by and between Wm. Wrigley Jr.   Company and J.P. Morgan Trust Company, National Association as trustee, is   incorporated by reference to Exhibit 99.2 to the Companys Form 8-K filed on   July 14, 2005                                                                                         
|                 |      |                                                                                                                                                                                                                                                                                                                                                   
|4(c).            |      | Officers   Certificate of Wm. Wrigley Jr. Company establishing the terms of the 4.30%   Senior Notes due 2010 is incorporated by reference to Exhibit 99.3 to the   Companys Form 8-K filed on July 14, 2005                                                                                                                                    
|                 |      |                                                                                                                                                                                                                                                                                                                                                   
|4(d).            |      | Officers   Certificate of Wm. Wrigley Jr. Company establishing the terms of the 4.65%   Senior Notes due 2015 is incorporated by reference to Exhibit 99.4 to the   Companys Form 8-K filed on July 14, 2005.                                                                                                                                   
|                 |      |                                                                                                                                                                                                                                                                                                                                                   
|4(e).            |      | Form of   Global Note representing the 4.30% Senior Notes due 2010 is incorporated by   reference to Exhibit 99.5 to the Companys Form 8-K filed on July 14, 2005.                                                                                                                                                                               
|                 |      |                                                                                                                                                                                                                                                                                                                                                   
|4(f).            |      | Form of   Global Note representing the 4.65% Senior Notes due 2015 is incorporated by   reference to Exhibit 99.6 to the Companys Form 8-K filed on July 14, 2005.                                                                                                                                                                               
|                 |      |                                                                                                                                                                                                                                                                                                                                                   
|10.              |      | Material   Contracts                                                                                                                                                                                                                                                                                                                              
|                 |      |                                                                                                                                                                                                                                                                                                                                                   
|10(a).           |      | Non-Employee   Directors Death Benefit Plan. Incorporated by reference to the Companys   Form 10-K filed for the fiscal year ended December 31, 1994.                                                                                                                                                                                           
|                 |      |                                                                                                                                                                                                                                                                                                                                                   
|10(b).           |      | Senior   Executive Insurance Plan. Incorporated by reference to the Companys Form   10-K filed for the fiscal year ended December 31, 1995.                                                                                                                                                                                                      

F-3



|10(c). |  | Supplemental   Retirement Plan. Incorporated by reference to the Companys Form 10-K filed   for the fiscal year ended December 31, 1995.                                                                                                                                                  
|------ |  | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|       |  |                                                                                                                                                                                                                                                                                            
|10(d). |  | Wm. Wrigley   Jr. Company 1997 Management Incentive Plan. The Registrants Amended   Management Incentive Plan, effective as of March 9, 2004 (MIP), is   incorporated by reference to the Companys Quarterly Report on Form 10-Q for   the fiscal quarter ended March 31, 2004.        
|       |  |                                                                                                                                                                                                                                                                                            
|10(e). |  | Deferred   Compensation Program for Non-Employee Directors under the MIP is incorporated   by reference to Exhibit 10(e) to the Companys Form 10-K filed for the fiscal   year ended December 31, 2004..                                                                                  
|       |  |                                                                                                                                                                                                                                                                                            
|10(f). |  | Stock   Deferral Program For Non-Employee Directors under the MIP is incorporated by   reference to Exhibit 10(f) to the Companys Form 10-K filed for the fiscal   year ended December 31, 2004.                                                                                          
|       |  |                                                                                                                                                                                                                                                                                            
|10(g). |  | Stock Award   Program under the MIP as amended, effective as of January 1, 2005, is   incorporated by reference to Exhibit 99.2 of the Companys Form 8-K filed on   October 28, 2005.                                                                                                     
|       |  |                                                                                                                                                                                                                                                                                            
|10(h). |  | Stock Option   Program under the MIP is incorporated by reference to Exhibit 10(h) to the   Companys Form 10-K filed for the fiscal year ended December 31, 2004.                                                                                                                         
|       |  |                                                                                                                                                                                                                                                                                            
|10(i). |  | Executive   Incentive Compensation Program under the MIP is incorporated by reference to   Exhibit 10(i) to the Companys Form 10-K filed for the fiscal year ended   December 31, 2004.                                                                                                   
|       |  |                                                                                                                                                                                                                                                                                            
|10(j). |  | Executive   Incentive Compensation Deferral Program under the MIP, as amended, effective   as of January 1, 2005, is incorporated by reference to Exhibit 99.3 to the   Companys Form 8-K filed on October 28, 2005. .                                                                    
|       |  |                                                                                                                                                                                                                                                                                            
|10(k). |  | Long-term   Stock Grant Program under the MIP, as amended, effective as of January 1,   2005, is incorporated by reference to Exhibit 99.1 to the Companys Form 8-K   filed on October 28, 2005.                                                                                          
|       |  |                                                                                                                                                                                                                                                                                            
|10(l). |  | Forms of   Change-in-Control Severance Agreement. Incorporated by reference to Exhibits   10(h) and 10(i) to the Companys Quarterly Report on Form 10-Q for the   quarter ended September 30, 2001.                                                                                       
|       |  |                                                                                                                                                                                                                                                                                            
|10(m). |  | Asset   Purchase Agreement dated November 14, 2004, between Kraft Foods Global, Inc.   and Wm. Wrigley Jr. Company is incorporated by reference to Exhibit 99.1 to   the Companys Form 8-K filed on November 18, 2004.                                                                    
|       |  |                                                                                                                                                                                                                                                                                            
|10(n). |  | Restricted   Stock Program under the MIP is incorporated by reference to Exhibit 99.1 to   the Companys Form 8-K filed on February 22, 2005.                                                                                                                                              
|       |  |                                                                                                                                                                                                                                                                                            
|10(o). |  | Commercial   Paper Dealer Agreement dated April 29, 2005, between Wm. Wrigley Jr. Company   and Merrill Lynch Money Markets Inc. and Merrill Lynch Pierce, Fenner &   Smith Incorporated, is incorporated by reference to Exhibit 99.1(a) to the   Companys Form 8-K filed on May 4, 2005.
|       |  |                                                                                                                                                                                                                                                                                            
|10(p). |  | Commercial   Paper Dealer Agreement dated April 29, 2005, between Wm. Wrigley Jr. Company   and Goldman Sachs & Co., is incorporated by reference to Exhibit 99.1(b)   to the Companys Form 8-K filed on May 4, 2005.                                                                     
|       |  |                                                                                                                                                                                                                                                                                            
|10(q). |  | Commercial   Paper Dealer Agreement dated April 29, 2005, between Wm. Wrigley Jr. Company   and J.P. Morgan Securities Inc. is incorporated by reference to Exhibit   99.1(c) to the Companys Form 8-K filed on May 4, 2005.                                                              
|       |  |                                                                                                                                                                                                                                                                                            
|10(r). |  | Issuing and   Paying Agency Agreement dated April 29, 2005, between Wm. Wrigley Jr. Company   and JP Morgan Chase Bank, N.A., is incorporated by reference to Exhibit 99.2   to the Companys Form 8-K filed on May 4, 2005.                                                               
|       |  |                                                                                                                                                                                                                                                                                            
|10(s). |  | Credit Agreement, dated as of July 14, 2005, among Wm. Wrigley Jr. Company, the Lenders thereto and JP Morgan Chase Bank, N.A., as Administrative Agent, is incorporated by reference to Exhibit 99.1 to the Companys Form 8-K filed on July 15, 2005.                                    
|       |  |                                                                                                                                                                                                                                                                                            
|13.    |  | 2005 Annual Report to Stockholders of the Registrant is attached hereto as Exhibit 13.                                                                                                                                                                                                     
|       |  |                                                                                                                                                                                                                                                                                            
|14.    |  | Code of Ethics  Code of Business Conduct is incorporated by reference to Exhibit 14 of the Companys Annual Report on Form 10-K dated February 9, 2004, filed for the fiscal year ended December 31, 2003.                                                                                
|       |  |                                                                                                                                                                                                                                                                                            
|21.    |  | List of Subsidiaries of the Registrant is attached hereto as Exhibit 21.                                                                                                                                                                                                                   

F-3 Contd



|23. |  | Consent of   Independent Registered Public Accounting Firm is attached hereto as Exhibit   23. (See page 15)                 
|--- |  | -----------------------------------------------------------------------------------------------------------------------------
|    |  |                                                                                                                              
|24. |  | Power of   Attorney of each independent director signed on varying dates in January 2006   are attached hereto as Exhibit 24.
|    |  |                                                                                                                              
|31. |  | Rule   13a-14(a)/15d-14(a) Certification of:                                                                                 
|    |  |                                                                                                                              
|    |  | (a)   Mr. William Wrigley, Jr., Chairman of the Board, President and Chief   Executive Officer; and                          
|    |  |                                                                                                                              
|    |  | (b)   Mr. Reuben Gamoran, Vice President and Chief Financial Officer;                                                        
|    |  |                                                                                                                              
|    |  | Attached   hereto as Exhibits 31(i) and (ii) respectively.                                                                   
|    |  |                                                                                                                              
|32. |  | Section 1350   Certifications of:                                                                                            
|    |  |                                                                                                                              
|    |  | (a)   Mr. William Wrigley, Jr., Chairman of the Board, President and Chief   Executive Officer; and                          
|    |  |                                                                                                                              
|    |  | (b)   Mr. Reuben Gamoran, Vice President and Chief Financial Officer;                                                        
|    |  |                                                                                                                              
|    |  | Attached   hereto as Exhibits 32(i) and (ii) respectively.                                                                   
|    |  |                                                                                                                              
|99. |  | (a)   Forward-Looking Statements.                                                                                            
|    |  |                                                                                                                              
|   

Copies of Exhibits are not attached hereto, but the Registrant will furnish them upon request and upon payment to the Registrant of a fee in the amount of $20.00 representing reproduction and handling costs.

F-3 Contd