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SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, DC 20549



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FORM 20-F



(Mark
One)



| ̈ | Registration statement pursuant to Section 12(b) or 12(g) of the Securities Exchange Act of 1934
|- | ------------------------------------------------------------------------------------------------



or



|x | Annual report pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 for the fiscal year ended December 31, 2004
|- | --------------------------------------------------------------------------------------------------------------------------------



or



| ̈ | Transition report pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934
|- | ----------------------------------------------------------------------------------------



For the transition period from
 to



Commission file number 333-10486



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TREND MICRO KABUSHIKI KAISHA

(Exact Name of Registrant as Specified in Its Charter)



TREND MICRO INCORPORATED

(Translation of Registrants Name Into English)



JAPAN

(Jurisdiction of Incorporation or Organization)



Shinjuku MAYNDS Tower, 1-1, Yoyogi 2-chome, Shibuya-ku, Tokyo

151-0053, Japan

(Address of Principal Executive Offices)



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Securities registered or to be registered pursuant to Section 12(b) of the Act:



|                    |  |                                          
|------------------- |  | -----------------------------------------
|Title of Each Class |  | Name of Each Exchange on Which Registered
|None                |  | None                                     



Securities
registered or to be registered pursuant to Section 12(g) of the Act:



(1) Common Stock*

(Title of Class)



Securities for which there is a reporting obligation pursuant to Section 15(d) of the Act:



None

(Title of Class)



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Indicate the number of outstanding shares of each of the issuers
classes of capital or common stock as of the close of the period covered by the annual report.



As of December 31, 2004, 133,167,433 shares of common stock were outstanding, including 934,800 American Depositary Shares represented by 934,800 shares of common stock.



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 ̈



Indicate by check mark which financial statement item the registrant has elected to follow.



Item 17 ̈Item 18  x



All information contained in this report is as of December 31, 2004 or for the year ended December 31, 2004 unless the context otherwise indicates. In
tables appearing in this annual report, figures may not add up to totals due to rounding.



* Not for trading, but only in connection with the registration of American Depositary Shares, each of which represents one share of Common Stock.



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Cautionary Statement Regarding Forward-Looking Statements



This annual report on Form 20-F contains forward-looking
statements within the meaning of the Section 21E of the Securities Exchange Act of 1934. To the extent that statements in this annual report do not relate strictly to historical or current facts, they may constitute forward-looking statements.
These forward-looking statements are based upon managements current assumptions and beliefs in light of the information currently available to it, but involve known and unknown risks and uncertainties. Our actual actions or results may differ
materially from those discussed in the forward-looking statements. We undertake no obligation to publicly update any forward-looking statement after the date of this annual report, but investors are advised to consult any further disclosures by us
in our subsequent filings pursuant to the Securities Exchange Act of 1934.



Important risks and factors that could cause our actual results to differ materially from our expectations are generally set forth in Item 3.D of this annual report and include, without limitation:



| | difficulties in addressing new virus and other computer security problems;
|- | --------------------------------------------------------------------------



| | timing of new product introductions and lack of market acceptance for our new products;
|- | ---------------------------------------------------------------------------------------



| | the level of continuing demand for, and timing of sales of, our existing products;
|- | ----------------------------------------------------------------------------------



| | rapid technological change within the anti-virus software industry;
|- | -------------------------------------------------------------------



| | changes in customer needs for anti-virus software;
|- | --------------------------------------------------



| | existing products and new product introductions by our competitors and the pricing of these products;
|- | -----------------------------------------------------------------------------------------------------



| | declining prices for our products and services;
|- | -----------------------------------------------



| | the effect of future acquisitions on our financial condition and results of operations;
|- | ---------------------------------------------------------------------------------------



| | the effect of adverse economic trends on our principal markets;
|- | ---------------------------------------------------------------



| | the effect of foreign exchange fluctuations on our results of operations;
|- | -------------------------------------------------------------------------



| | an increase in the incidence of product returns;
|- | ------------------------------------------------



| | the potential lack of attractive investment targets;
|- | ----------------------------------------------------



| | difficulties in successfully executing our investment strategy; and
|- | -------------------------------------------------------------------



| | other risks discussed under Risk Factors and elsewhere in this annual report.
|- | -------------------------------------------------------------------------------



As used in this annual report, unless otherwise specified, references to Trend Micro are to Trend Micro Incorporated. Also, as
used in this annual report, references to we, our and us are to Trend Micro Incorporated and, except as the context otherwise requires, its consolidated subsidiaries.



Also, as used in this annual report:



| |  | dollar or $ means the lawful currency of the United States of America, and yen or (Yen) means the lawful currency of Japan.
|- |  | -----------------------------------------------------------------------------------------------------------------------------------



| |  | U.S. GAAP means generally accepted accounting principles in the United States.
|- |  | --------------------------------------------------------------------------------



| |  | ADS means an America Depositary Share, each representing 1 share of our common stock, and ADR means an American Depositary Receipt evidencing ADSs.
|- |  | -------------------------------------------------------------------------------------------------------------------------------------------------------



| |  | fiscal 2004 and fiscal year 2004 refer to our fiscal year ended December 31, 2004, and other fiscal years are referred to in a corresponding manner.
|- |  | --------------------------------------------------------------------------------------------------------------------------------------------------------



| |  | In tables appearing in this annual report, figures may not add up to totals due to rounding.
|- |  | --------------------------------------------------------------------------------------------



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A. Selected Financial Data.



You should read the following selected consolidated financial information together with the financial statements and notes
to the statements which begin on page F-2 and are in response to Item 8 and Item 18. You should also read the Operating and Financial Review and Prospects included as Item 5.



The consolidated income statement information for the fiscal years ended December 31, 2002, 2003 and 2004, and the
consolidated balance sheet information as of December 31, 2003 and 2004, are derived from and should be read together with our consolidated financial statements prepared in accordance with U.S. GAAP included elsewhere in this annual report.



The consolidated income statement information for the fiscal
years ended December 31, 2000 and 2001, and the consolidated balance sheet information as of December 31, 2000, 2001 and 2002 are derived from our consolidated financial statements prepared in accordance with U.S. GAAP but are not included in this
annual report.



|                                                                                        |  |                                                                      |  |             |  |             |  |             |  |             |  |      |        
|--------------------------------------------------------------------------------------- |  | -------------------------------------------------------------------- |  | ----------- |  | ----------- |  | ----------- |  | ----------- |  | ---- | -------
|                                                                                        |  | Year Ended December 31,                                             
|                                                                                        |  | 2000                                                                 |  | 2001        |  | 2002        |  | 2003        |  | 2004        |  | 2004
|                                                                                        |  | (in millions of yen and thousands of dollars, except per share data)
|Sales                                                                                   |  | (Yen)20,070                                                          |  | (Yen)31,326 |  | (Yen)42,980 |  | (Yen)48,088 |  | (Yen)62,049 |  | $    | 602,420
|Cost of sales                                                                           |  | 1,474                                                                |  | 1,899       |  | 2,354       |  | 3,168       |  | 3,236       |  |      | 31,422 
|                                                                                        |  |                                                                      |  |             |  |             |  |             |  |             |  |      |        
|Gross profit                                                                            |  | 18,596                                                               |  | 29,427      |  | 40,626      |  | 44,920      |  | 58,813      |  |      | 570,998
|                                                                                        |  |                                                                      |  |             |  |             |  |             |  |             |  |      |        
|Operating expenses:(1)                                                                  |  |                                                                      |  |             |  |             |  |             |  |             |  |      |        
|Selling                                                                                 |  | 5,445                                                                |  | 10,001      |  | 15,052      |  | 15,360      |  | 16,009      |  |      | 155,431
|Research and development and maintenance                                                |  | 2,044                                                                |  | 2,755       |  | 3,506       |  | 3,919       |  | 4,858       |  |      | 47,168 
|Customer Support                                                                        |  |                                                                     |  | 2,449       |  | 3,858       |  | 4,831       |  | 5,724       |  |      | 55,567 
|General and administrative                                                              |  | 5,304                                                                |  | 4,453       |  | 4,344       |  | 5,656       |  | 6,144       |  |      | 59,651 
|Goodwill amortization                                                                   |  | 276                                                                  |  |            |  |            |  |            |  |            |  |      |       
|Goodwill write-off                                                                      |  |                                                                     |  | 2,253       |  |            |  |            |  |            |  |      |       
|                                                                                        |  |                                                                      |  |             |  |             |  |             |  |             |  |      |        
|Total operating expenses                                                                |  | 13,069                                                               |  | 21,911      |  | 26,760      |  | 29,766      |  | 32,735      |  |      | 317,817
|                                                                                        |  |                                                                      |  |             |  |             |  |             |  |             |  |      |        
|Operating income                                                                        |  | 5,527                                                                |  | 7,516       |  | 13,866      |  | 15,154      |  | 26,078      |  |      | 253,181
|Other income (expense), net                                                             |  | 1,365                                                                |  | 241         |  | (768)       |  | 175         |  | 247         |  |      | 2,401  
|Net income before tax                                                                   |  | 6,892                                                                |  | 7,757       |  | 13,098      |  | 15,329      |  | 26,325      |  |      | 255,582
|Income taxes                                                                            |  | 3,123                                                                |  | 3,241       |  | 5,395       |  | 6,103       |  | 10,503      |  |      | 101,973
|Income before minority interest and equity in earnings (losses) of affiliated companies |  | 3,769                                                                |  | 4,516       |  | 7,703       |  | 9,226       |  | 15,822      |  |      | 153,609
|Minority interest in income of a consolidated subsidiary                                |  | 7                                                                    |  |            |  |            |  |            |  |            |  |      |       
|Income from consolidated companies                                                      |  | 3,762                                                                |  | 4,516       |  | 7,703       |  | 9,226       |  | 15,822      |  |      | 153,609
|Equity in earnings (losses) of affiliated companies                                     |  | (87)                                                                 |  | (130)       |  | 11          |  | 24          |  | 53          |  |      | 516    
|Net income                                                                              |  | (Yen)3,675                                                           |  | (Yen)4,386  |  | (Yen)7,714  |  | (Yen)9,250  |  | (Yen)15,875 |  | $    | 154,125
|                                                                                        |  |                                                                      |  |             |  |             |  |             |  |             |  |      |        
|Net income per share (basic)(2)                                                         |  | (Yen)28.18                                                           |  | (Yen)33.33  |  | (Yen)58.39  |  | (Yen)70.11  |  | (Yen)120.64 |  | $    | 1.17   
|                                                                                        |  |                                                                      |  |             |  |             |  |             |  |             |  |      |        



- 1 -



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|                                                        |  |                                                                      |  |             |  |             |  |             |  |             |  |      |     
|------------------------------------------------------- |  | -------------------------------------------------------------------- |  | ----------- |  | ----------- |  | ----------- |  | ----------- |  | ---- | ----
|                                                        |  | Year Ended December 31,                                             
|                                                        |  | 2000                                                                 |  | 2001        |  | 2002        |  | 2003        |  | 2004        |  | 2004
|                                                        |  | (in millions of yen and thousands of dollars, except per share data)
|Net income per share (diluted)(2)                       |  | (Yen) 27.53                                                          |  | (Yen) 33.02 |  | (Yen) 58.22 |  | (Yen) 69.95 |  | (Yen)118.59 |  | $    | 1.15
|                                                        |  |                                                                      |  |             |  |             |  |             |  |             |  |      |     
|Cash dividends per share(2)                             |  | (Yen)                                                               |  | (Yen)      |  | (Yen)      |  | (Yen)      |  | (Yen) 14    |  | $    | 0.14
|                                                        |  |                                                                      |  |             |  |             |  |             |  |             |  |      |     
|Weighted average common shares outstanding (basic)(2)   |  | 130,388,962                                                          |  | 131,594,913 |  | 132,111,467 |  | 131,940,179 |  | 131,588,738 |  |      |     
|Weighted average common shares outstanding (diluted)(2) |  | 133,454,940                                                          |  | 132,832,159 |  | 132,494,201 |  | 132,235,128 |  | 133,863,237 |  |      |     



|(1) | Effective from the year ended December 31, 2003, we started to report customer support expenses, previously included in general and administrative expenses, as a separate line item
under Operating expenses and reclassified certain operating expenses such as overhead costs from general and administrative expenses to selling expenses. We have retroactively made corresponding changes in our income statements for the
years ended December 31, 2001 and 2002. We have not made corresponding change in our income statement for the year ended December 31, 2000, because we do not have data from those years that form the basis for reclassifying the operating expense line
items in the manner described above.
|--- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|(2) | We effected a one-to-two stock split on May18, 2001. The share and per share amounts for each of the two years ended December 31, 2000 and 2001 have been restated to reflect that
stock split.
|--- | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



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|                                       |  |                                                                      |        |      |       |        |  |       |        |      |       |        |  |       |         |  |   |          
|-------------------------------------- |  | -------------------------------------------------------------------- | ------ | ---- | ----- | ------ |  | ----- | ------ | ---- | ----- | ------ |  | ----- | ------- |  | - | ---------
|                                       |  | Year Ended December 31,                                             
|                                       |  | 2000                                                                 |        | 2001 |       | 2002   |  | 2003  |        | 2004 |       | 2004  
|                                       |  | (in millions of yen and thousands of dollars, except per share data)
|Consolidated Balance Sheet Information |  |                                                                      |        |      |       |        |  |       |        |      |       |        |  |       |         |  |   |          
|Cash and cash equivalents              |  | (Yen)                                                                | 24,436 |      | (Yen) | 40,783 |  | (Yen) | 47,830 |      | (Yen) | 46,719 |  | (Yen) | 52,908  |  | $ | 513,673  
|Total assets                           |  |                                                                      | 44,574 |      |       | 64,729 |  |       | 73,838 |      |       | 81,271 |  |       | 106,734 |  |   | 1,036,252
|Current portion of long-term debt      |  |                                                                      | 57     |      |       | 3,000  |  |       | 5,000  |      |       | 6,500  |  |       |        |  |   |         
|Long-term debt                         |  |                                                                      | 9,800  |      |       | 11,500 |  |       | 6,500  |      |       |       |  |       |        |  |   |         
|Total liabilities                      |  |                                                                      | 20,230 |      |       | 33,963 |  |       | 36,694 |      |       | 37,319 |  |       | 43,559  |  |   | 422,904  
|Common stock                           |  |                                                                      | 6,183  |      |       | 6,834  |  |       | 7,257  |      |       | 7,396  |  |       | 11,427  |  |   | 110,942  
|Shareholders equity                   |  | (Yen)                                                                | 24,344 |      | (Yen) | 30,766 |  | (Yen) | 37,144 |      | (Yen) | 43,952 |  | (Yen) | 63,175  |  | $ | 613,348  



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Exchange Rates.



In this annual report, we have translated Japanese yen amounts into U.S. dollars solely for the convenience of readers.
Unless otherwise indicated, the rate we used for the translation was (Yen) 103. 00 per $1, which was the approximate rate on December 31, 2004. The following table shows the noon buying rates for Japanese yen expressed in Japanese yen per $1. On
June 24, 2005 the noon buying rate announced by the Federal Reserve Bank of New York was (Yen) 109.22 per $1.



|                               |  |        |  |        |  |             |  |            
|------------------------------ |  | ------ |  | ------ |  | ----------- |  | -----------
|Year ended/ending December 31, |  | High   |  | Low    |  | Average (1) |  | Period- end
|2000                           |  | 114.62 |  | 101.70 |  | 108.37      |  | 114.35     
|                               |  |        |  |       
|2001                           |  | 131.47 |  | 114.26 |  | 122.18      |  | 131.04     
|                               |  |        |  |       
|2002                           |  | 134.77 |  | 115.71 |  | 124.81      |  | 118.75     
|                               |  |        |  |       
|2003                           |  | 121.42 |  | 106.93 |  | 115.99      |  | 107.13     
|                               |  |        |  |       
|2004                           |  | 114.30 |  | 102.56 |  | 108.15      |  | 102.68     
|                               |  |        |  |       
|2005 (through June 24)         |  | 109.58 |  | 102.26 |  | 106.14      |  | 109.22     
|                               |  |        |  |       
|Calendar Year 2004             |  |        |  |        |  |             |  |            
|                               |  |        |  |       
|December                       |  | 114.30 |  | 102.56 |  | 108.15      |  | 102.67     
|                               |  |        |  |       
|Calendar Year 2005             |  |        |  |        |  |             |  |            
|                               |  |        |  |       
|January                        |  | 104.93 |  | 102.26 |  | 103.34      |  | 103.55     
|                               |  |        |  |       
|February                       |  | 105.84 |  | 103.70 |  | 104.94      |  | 104.25     
|                               |  |        |  |       
|March                          |  | 107.49 |  | 103.87 |  | 105.25      |  | 107.22     
|                               |  |        |  |       
|April                          |  | 108.67 |  | 104.64 |  | 107.19      |  | 104.64     
|                               |  |        |  |       
|May                            |  | 108.17 |  | 104.41 |  | 106.59      |  | 107.97     
|                               |  |        |  |       
|June (until June 24)           |  | 109.58 |  | 106.64 |  | 108.44      |  | 109.22     

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|(1) | For annual averages, calculated based on the average of the exchange rates on the last day of each month during the period. For monthly averages, calculated based on the average of
daily closing exchange rates.
|--- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



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D. Risk Factors.



The occurrence of any of the following risks could hurt our business, financial condition or results of operations. In such case, the trading price of our
shares and the ADSs could decline and you could lose all or part of your investment. Other risks and uncertainties not now known to us or that we think are immaterial may also impair our business.



MAJOR SOFTWARE AND HARDWARE VENDORS MAY INCORPORATE ANTI-VIRUS PROTECTION IN THEIR PRODUCT
OFFERINGS, WHICH COULD RENDER OUR PRODUCTS OBSOLETE OR UNMARKETABLE.



Major vendors of operating system software and other software such as firewall or e-mail software or computer hardware may decide to enhance or bundle their products with their other products to include anti-virus
functions. These companies may offer anti-virus protection as a standard feature in their products, at minimal or no additional cost to customers. This could render our products obsolete or unmarketable, particularly if anti-virus products offered
by these vendors were comparable or superior to our products. In addition, even if these vendors anti-virus products offered fewer functions than our products, or were less effective in detecting and cleaning virus-infected files, customers
could still choose them over our products due to lower cost or for any other reasons.



In June 2003, Microsoft Corp., a major operating system vendor, announced that it acquired certain valuable intellectual property and technology assets from GeCAD Software Srl., an anti-virus software vendor in
Romania. In February 2005, Microsoft Corp. also announced that it has signed contracts to acquire Sybari Software Inc., a leading provider of anti-virus and messaging security products in the United States. At this time, we do not know the
intentions of Microsoft with regard to these transactions, but if antivirus functions were to be included in its operating system products, and/or, if Microsoft decides to sell antivirus products under their own brand, this could have a material
adverse effect on our business, financial condition and results of operations.



- 5 -



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BECAUSE WE GENERATE SUBSTANTIALLY ALL OF OUR SALES FROM A SINGLE PRODUCT LINE, WE ARE VULNERABLE TO DECREASED DEMAND
FOR SUCH PRODUCTS.



Unlike software companies with
diversified product lines, we derive substantially all of our net sales from licensing and selling anti-virus software products. Although we have begun to offer more comprehensive network and internet security and management software and services,
we expect anti-virus products to continue to account for the largest portion of our net sales for the foreseeable future. If the demand for, or the prices of, anti-virus products drop as a result of competition, technological change or other factors
such as lower growth or a contraction in the worldwide anti-virus software market, this could have a material adverse effect on our business, financial condition and results of operations.



DETERIORATION IN OUR RELATIONSHIP WITH SOFTBANK BB CORP. COULD RESULT IN A DECREASE IN
SALES OF OUR PRODUCTS.



We depend on our relationship with
SOFTBANK BB (formerly SOFTBANK COMMERCE CORP.), which has played an instrumental role in the development of our business in Japan. SOFTBANK BB also has close relationships with many resellers and systems integrators through which we sell our
anti-virus software to corporate end users in Japan. An adverse change in our relationship with SOFTBANK BB would result in decreased sales to SOFTBANK BB and could disrupt our relationship with many resellers of our products. This could make it
difficult for us to market our products in Japan. Sales to SOFTBANK BB totaled approximately (Yen)10.1 billion, or 23.6%, of our net sales in fiscal 2002, approximately (Yen)9.2 billion, or 19.1%, of our net sales in fiscal 2003 and approximately
(Yen)10.4 billion ($101.0 million), or 16.8%, of our net sales in fiscal 2004. Because of our dependence on SOFTBANK BB, the price of shares and ADSs could fall as a result of adverse events affecting SOFTBANK BB, even if the events do not relate
directly to us.



OUR PRODUCTS MAY BECOME OBSOLETE BECAUSE RAPID
TECHNOLOGICAL CHANGE REGULARLY OCCURS IN THE ANTI-VIRUS SOFTWARE MARKET.



The anti-virus software market is characterized by:



| |  | rapid technological change;
|- |  | ---------------------------



| |  | the proliferation of new and changing computer viruses;
|- |  | -------------------------------------------------------



| |  | frequent product introductions and updates; and
|- |  | -----------------------------------------------



| |  | changing customer needs.
|- |  | ------------------------



These characteristics of our market create significant risks and uncertainties for our business success. For example, our competitors might introduce
anti-virus products that are technologically superior to our products. Additionally, new software operating system, network system or anti-virus software industry standards could emerge. Emerging trends in these systems and standards currently
include applications distributed over the Internet and the use of a Web browser to access client-server systems. Our existing products might be incompatible with some or all of such standards. Our business, financial condition and results of
operations could materially suffer unless we are able to respond quickly and effectively to these developments.



- 6 -



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OUR HARDWARE-BASED PRODUCTS FACE MANUFACTURING AND INVENTORY RISKS.



We rely on a small number of third parties to manufacture some of our
hardware-based products, such as the Trend Micro Network VirusWall described in Item 4.B. We expect our reliance on third-party manufacturers to become more important as the number of our hardware-based products increases. Reliance on third-party
manufacturers involves a number of risks, including a lack of control over the manufacturing process and the potential absence or unavailability of adequate capacity. If any of our third-party manufacturers cannot or will not manufacture our
products in required volumes in compliance with environmental and other regulations in the markets we serve, on a cost-effective basis, in a timely manner, or at all, we will have to secure additional manufacturing capacity. The unexpected loss of
any of our manufacturers could disrupt our business. Furthermore, our hardware-based products contain critical components supplied by a single or a limited number of third parties. Any significant shortage of components or the failure of the
third-party supplier to maintain or enhance these products could lead to cancellation of customer orders or delays in the placement of orders and adversely affect our financial condition and results of operation.



WE MAY NOT GENERATE EXPECTED RESULTS IN STRATEGIC ALLIANCES



Because we are mainly focusing our business on the field of anti-virus
software and do not offer other security products such as firewalls, we actively pursue strategic alliances with other companies that allow us to provide customers with integrated or other new products and services derived from the alliances. In
fiscal year 2004, we began to provide a third party URL filtering solution and have signed contracts with Cisco Systems to integrate network worm and virus outbreak-prevention services with Ciscos products and services. To launch and provide
such products and services, we may invest substantial cash and other resources in product developments, marketing promotions and support and maintenance activities. But we may not earn revenue successfully from alliances despite our efforts, and
such alliance may be terminated or dissolved by various causes before generating revenue.



WE MAY NOT BE ABLE TO INCREASE OUR MARKET SHARE IN THE U.S. AND EUROPEAN MARKETS BECAUSE OUR COMPETITORS ARE MORE ESTABLISHED THAN WE ARE IN THESE MARKETS.



We believe that our share of the anti-virus software market in the U.S. and
Europe is significantly small relative to the market shares of our principal competitors, despite the growth of our sales in these markets in fiscal 2003 and 2004. Because our competitors are already well-established in these key markets and have
greater financial and other resources and market recognition, we may not be able to compete effectively for market share. If this happens, we may not be able to increase sales or our market share in these markets, which could materially hurt the
prospects for growth in our business.



Some of our major
competitors have the following important advantages over us in the U.S. and European markets:



| |  | greater name recognition;
|- |  | -------------------------



| |  | more diversified product lines;
|- |  | -------------------------------



| |  | larger customer bases; and
|- |  | --------------------------



| |  | significantly greater financial, technical, marketing and other resources.
|- |  | --------------------------------------------------------------------------



As a result, as compared to us, our competitors may be able to:



| |  | better withstand downturns in the anti-virus software market and in the computer software market in general;
|- |  | ------------------------------------------------------------------------------------------------------------



| |  | adapt more quickly to new or emerging technologies or changes in customer requirements; or
|- |  | ------------------------------------------------------------------------------------------



| |  | more effectively and profitably market, sell and support their products.
|- |  | ------------------------------------------------------------------------



- 7 -



---

WE MAY SUFFER A LOSS OF SALES AND MARKET SHARE IN OUR CORE JAPANESE MARKET IF OUR COMPETITORS ACHIEVE SUCCESS IN
JAPAN.



Our major competitors, McAfee, Inc. and Symantec
Corporation, are active in the Japanese anti-virus software market and have allocated significant resources to achieve success in the Japanese anti-virus software market. Although these competitors currently have smaller shares of the Japanese
market than us, each has significantly greater financial, marketing and other resources than we do. Additionally, competition in our core Japanese market could intensify in the future if other competitors emerge. As a result of our competitors
efforts, we may not be able to maintain our current leading market position in Japan in the future. Also, in order to respond effectively to increased competition, we may be required to devote more of our product development, marketing and other
resources to the Japanese market, which could limit our ability to grow in other markets. A material loss of sales and market share in Japan as a result of our competitors success could have a material adverse effect on our business, financial
condition and results of operations.



BECAUSE WE MAY ACQUIRE COMPANIES TO
GROW OUR BUSINESS, FUTURE ACQUISITIONS MAY REDUCE OUR EARNINGS AND RESULT IN INCREASED COSTS IN OUR BUSINESS OPERATIONS.



In a rapidly changing industry, we occasionally review acquisition opportunities. Accordingly, we may seek to expand our business through acquisitions.
Unlike some of our major competitors, we have limited experience in acquiring existing businesses. Future acquisitions could result in numerous risks and uncertainties, including:



| |  | our inability to retain customers, suppliers and other important business relationships of an acquired business;
|- |  | ----------------------------------------------------------------------------------------------------------------



| |  | difficulties in integrating an acquired company into Trend Micro, including the acquired companys operations, personnel, products and information systems;
|- |  | -----------------------------------------------------------------------------------------------------------------------------------------------------------



| |  | diversion of our managements attention from other business concerns; and
|- |  | -------------------------------------------------------------------------



| |  | adverse effects on our results of operations from acquisition-related charges, impairment of goodwill and purchased technology and possible recognition of impairment charge.
|- |  | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------



If we make such an acquisition using stock, our
current shareholders ownership interests will be diluted. Any of these factors could materially hurt our business, financial condition and results of operations.



For example, in 2000, we acquired ipTrend to start a new business selling a Linux based remotely managed server appliance
solution to small and medium sized companies. However, ipTrend performed poorly and was liquidated in December 2001. Due to the liquidation of ipTrend, (Yen)2.3 billion was booked as goodwill write-off in 2001.



- 8 -



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IF HACKERS GAIN UNAUTHORIZED ACCESS TO OUR SYSTEMS, WE COULD SUFFER DISRUPTIONS IN OUR BUSINESS AND LONG-TERM DAMAGE
TO OUR REPUTATION.



We may be more susceptible to problems
caused by hackers than other software companies. As an anti-virus software company that delivers virus protection products over the Internet, hackers specifically target us in order to cause us to transmit computer viruses or interrupt the delivery
of our anti-virus software monitoring and security services over the Internet which could result in further interruptions. We could suffer substantial disruptions in our business and material damage to our reputation which could in turn result in a
significant loss of our customers and other important business relationships. We could also incur costs for public relations efforts following attacks by hackers. Hacker activities could also force us to incur substantial costs to fix technical
problems or result in hackers gaining access to our proprietary information.



WE MUST EFFECTIVELY MANAGE OUR GROWTH.



Our
business has grown rapidly. This growth has placed, and any future growth would continue to place, a significant strain on our limited personnel, management and other resources. Our ability to manage any future growth in our business will require us
to:



| |  | attract, train, retain, motivate and manage new employees successfully;
|- |  | -----------------------------------------------------------------------



| |  | effectively integrate new employees into our operations; and
|- |  | ------------------------------------------------------------



| |  | continue to improve our operational, financial, management and information systems and controls.
|- |  | ------------------------------------------------------------------------------------------------



If we continue to grow, our management systems currently in place may be inadequate or we may not be able to effectively
manage our growth. In particular, we may be unable to:



| |  | provide effective customer service;
|- |  | -----------------------------------



| |  | develop and deliver products in a timely manner;
|- |  | ------------------------------------------------



| |  | implement effective financial reporting and control systems; and
|- |  | ----------------------------------------------------------------



| |  | exploit new market opportunities and effectively respond to competitive pressures.
|- |  | ----------------------------------------------------------------------------------



- 9 -



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WE SELL OUR PRODUCTS THROUGH INTERMEDIARIES WHO MAY NOT VIGOROUSLY MARKET OUR PRODUCTS, OR MAY RETURN OUR PRODUCTS.



We market substantially all of our products to end users
through intermediaries, including distributors, resellers and value-added resellers. Our distributors sell other products that are complementary to, or compete with, our products. While we encourage our distributors to focus on our products, these
distributors may give greater priority to products of other suppliers, including competitors. They may also return the products to us under certain circumstances.



OUR CUSTOMERS MAY CANCEL OR DELAY THEIR PURCHASES OF OUR PRODUCTS, WHICH COULD ADVERSELY AFFECT OUR BUSINESS.



Our products may be considered to be capital purchases by certain enterprise
customers. Capital purchases are often uncertain and, therefore, are canceled or delayed if the customer experiences a downturn in its business prospects or as a result of unfavorable economic conditions. Any cancellation or delay could adversely
affect our results of operations.



WEAK FINANCIAL CONDITIONS OF SOME OF OUR
DISTRIBUTORS MAY ADVERSELY AFFECT OUR OPERATING RESULTS.



Some of our distributors are experiencing financial difficulties worldwide, which may adversely impact our collection of accounts receivable. We regularly review the collectibility and creditworthiness of our distributors to determine an
appropriate allowance for doubtful receivables. Our uncollectible accounts could exceed our current or future allowance for doubtful receivables, which would adversely impact our operating results.



- 10 -



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OUR RESULTS OF OPERATIONS MAY SUFFER IF WE ARE REQUIRED TO PAY SIGNIFICANT AMOUNTS OF PENALTY PAYMENTS PURSUANT TO THE
TERMS OF OUR SERVICE LEVEL AGREEMENTS.



We guarantee a
certain quality of product support to our customers through our service level agreements. Pursuant to the terms of these agreements, under some circumstances, we are required to make penalty payments to our customers. For example, if we fail to
provide our customers a virus pattern file within two hours of our receipt of a virus from the customer, the terms of the agreement require us to make a penalty payment to the dissatisfied customer which may amount up to 100% of the initial sale
price. We have established reserves based on our assumptions and estimates. However, our assumptions and estimates may be wrong and our actual total penalty payments could materially exceed our reserves and adversely affect our results of operations
and financial condition.



WE RELY HEAVILY ON OUR MANAGEMENT AND TECHNICAL
PERSONNEL, WHO MAY NOT REMAIN WITH US IN THE FUTURE.



We
rely, and will continue to rely, on a number of key technical and management employees, including our Chief Executive Officer, Eva Yi-Fen Chen. While we require our employees to sign employment agreements, our employees are generally not otherwise
subject to noncompetition covenants. If any of our key employees leave, our business, results of operations and financial condition could suffer.



FLUCTUATIONS IN OUR QUARTERLY FINANCIAL RESULTS COULD CAUSE THE MARKET PRICE FOR OUR SHARES AND OUR ADSs TO BE VOLATILE.



We believe that our quarterly financial results may fluctuate in ways that
do not reflect the long-term trend of our future financial performance. It is likely that in some future quarterly periods, our operating results may be below the expectations of public market analysts and investors. In this event, the price of our
shares and our ADSs could fall.



Factors which could cause our
quarterly financial results to fluctuate include:



| |  | timing of sales of our products and services due to customers budgetary constraints, seasonal buying patterns and our promotional activities;
|- |  | ----------------------------------------------------------------------------------------------------------------------------------------------



| |  | new product introductions by our competitors;
|- |  | ---------------------------------------------



| |  | significant marketing campaigns, research and development efforts, employee hirings, and other capital expenditures by us to drive the growth of our business;
|- |  | --------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  | changes in customer needs for anti-virus software; and
|- |  | ------------------------------------------------------



| |  | changes in economic conditions in our major markets.
|- |  | ----------------------------------------------------



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WEAKNESS IN THE JAPANESE ECONOMY MAY HURT OUR BUSINESS PERFORMANCE BECAUSE JAPAN IS OUR LARGEST MARKET.



While our sales in the U.S. and Europe have increased in
recent years, we remain significantly dependent on the Japanese market. Net sales in Japan accounted for approximately 43% of our net sales in fiscal 2002, approximately 42% in fiscal 2003 and approximately 41% in fiscal 2004. In the past three
years, the Japanese economy has performed poorly due to a number of factors, including weak consumer spending and lower capital investment by Japanese companies. We believe the sluggish Japanese economy has hindered growth in our net sales during
the last three years. Because of our dependence on the Japanese market, any further deterioration in the condition of the Japanese economy could negatively impact our net sales.



FOREIGN EXCHANGE FLUCTUATIONS COULD LOWER OUR RESULTS OF OPERATIONS BECAUSE WE EARN REVENUES DENOMINATED IN SEVERAL DIFFERENT CURRENCIES.



Our reporting currency is the Japanese yen and the
functional currency of each of our subsidiaries is the currency of the country in which the subsidiary is domiciled. However, a significant portion of our revenues and operating expenses is denominated in currencies other than the Japanese yen,
primarily the U.S. dollar, euro and the New Taiwan dollar. As a result, appreciation or depreciation in the value of other currencies as compared to the Japanese yen could result in material transaction or translation gains or losses which could
reduce our operating results. These negative effects from currency fluctuations could become more significant if we are successful in increasing our sales in markets outside of Japan. We do not currently engage in currency hedging activities.



BECAUSE OUR BUSINESS DEPENDS SIGNIFICANTLY ON INTELLECTUAL PROPERTY,
INFRINGEMENT OF OUR INTELLECTUAL PROPERTY COULD HURT OUR BUSINESS.



Our success depends upon the development of proprietary software technology. We rely on a combination of contractual rights and patent, copyright, trademark and trade secret laws to establish and protect proprietary rights in our software.
If we are unable to establish and protect these rights, our competitors may be able to use our intellectual property to compete against us. This could limit our growth and hurt our business. At present, our U.S. consolidated subsidiary holds seven
issued U.S. patents and our Taiwan consolidated subsidiary holds four issued U.S. patents. It is possible that no additional patents will be issued to us or any of our subsidiaries. In addition, our issued patents may not prevent other companies
from competing with us. We also enter into confidentiality agreements with our employees and license agreements with our customers, and limit access to our proprietary information and its distribution. However, we cannot guarantee that any of these
measures will discourage others from misappropriating our technology or independently developing similar technology.



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PRODUCT LIABILITY CLAIMS ASSERTED AGAINST US IN THE FUTURE COULD HURT OUR BUSINESS.



Our products are designed to protect customers network systems and
personal computers from damage caused by computer viruses. As a result, if a customer suffers damage from viruses, the customer could sue us on product liability or related grounds, claim damages for data loss or make other claims. Additionally, as
viruses are constantly evolving, purchasers of our software products must regularly update the software they have purchased from us with virus protection files that we make available for download from our website. Should we fail to properly test
these virus protection files and distribute a defective file, these files could cause damage to the personal computers of our customers who have downloaded a defective file. For example, a file that we distributed on April 23, 2005 for an
approximately 90 minute period caused the computers of those updating with the file to slow and, in some cases, shut down. Cases of our files damaging the computers or our customers could lead to significant damage to our reputation and customers
could sue on product liability or related grounds. Furthermore, starting in 2001, we began selling hardware devices which could give rise to a higher incidence of product liability claims than we have up until now experienced. Our license agreements
typically contain provisions, such as disclaimers of warranty and limitations of liability, which seek to limit our exposure to certain types of product liability claims. However, in some jurisdictions these provisions may not be enforceable on
statutory, public policy or other grounds. We currently do not carry product liability insurance covering claims arising in the U.S. Damage to our reputation or successful product liability or related claims brought against us could materially harm
our business.



OUR BUSINESS FACES THE RISK OF INTERRUPTION FROM POWER
SHORTAGES, EARTHQUAKES, OUTBREAK OF BIOLOGICAL VIRUSES AND OTHER HAZARDS.



We face a number of potential business interruption risks that are beyond our control. The State of California experienced intermittent power shortages in 2000, sharp increases in the cost of energy and even
interruptions of service to some business customers. If power shortages continue to be a problem, our business may be materially adversely affected. Additionally, we may experience natural disasters that could interrupt our business.



Tokyo, where our corporate headquarter is located, is near a major earthquake fault. The
impact of a major earthquake on our facilities, infrastructure and overall operations is not known. There is no guarantee that an earthquake would not seriously disturb our entire business operations. We are largely uninsured for losses and business
disruptions caused by an earthquake and other natural disasters.



In addition, many of the key countries and regions in which we operate have sustained negative economic impact from events such as the continued fear of future terrorist attacks and the outbreak of severe acute respiratory syndrome, or
SARS. Prolonged continuation of these adverse factors may hurt our results of operations and financial condition.



WE MAY HAVE TO CONSTRAIN OUR BUSINESS ACTIVITIES TO AVOID BEING DEEMED AN INVESTMENT COMPANY UNDER THE U.S. INVESTMENT COMPANY ACT OF 1940.



In general, a company which is or holds itself out as being engaged
primarily in the business of investing, reinvesting or trading in securities, may be deemed to be an investment company under the U.S. Investment Company Act of 1940. We do not believe that we are an investment company as defined under the U.S.
Investment Company Act of 1940. However, if we were to be deemed an investment company, we would be prohibited from issuing our securities in the United States and may have to terminate our U.S. listing or other sponsorship promoting a U.S. trading
market for our issued securities. In order to avoid these prohibitions, we may be forced to forego otherwise attractive business opportunities, potentially limiting our growth and our profitability.



- 13 -



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BECAUSE OF THE INFLUENCE OF OUR PRINCIPAL SHAREHOLDERS, OUR OTHER SHAREHOLDERS MAY BE UNABLE TO INFLUENCE OUR
BUSINESS.



Our principal shareholders, including major
shareholders who beneficially own more than 5% of the issued shares of our common stock and directors, beneficially owned approximately 43.1% of our outstanding shares as of December 31, 2004. These shareholders, if they act together, would be able
to significantly influence all matters requiring approval by our shareholders, including the election of directors and the approval of mergers or other business combination transactions. Our principal shareholders may have strategic or other
interests that conflict with the interests of our other shareholders. As a result, the concentration in our shareholdings may have the effect of delaying or preventing a change in control of Trend Micro, which could result in the loss of a
significant financial gain to our shareholders.



OUR STOCK PRICE IS
VOLATILE, AND INVESTORS BUYING THE SHARES OR ADSs MAY NOT BE ABLE TO RESELL THEM AT OR ABOVE THEIR PURCHASE PRICE.



Shares of our common stock are traded on the Tokyo Stock Exchange, which is the principal market for our shares. Recently, the U.S. and Japanese
securities markets have experienced significant price and volume fluctuations. The market prices of securities of high-tech companies, and internet companies in particular, have been especially volatile. Since trading in our shares commenced on the
Tokyo Stock Exchange on August 17, 2000, our stock price has fluctuated between a low of (Yen)1,440 and a high of (Yen)9,005. Since trading in our ADSs commenced on the Nasdaq National Market on July 8, 1999, the price of our ADSs has fluctuated
between a low of $12.16 and a high of $159.38. The closing price on the Tokyo Stock Exchange for our stock on May 27, 2005 was (Yen)3,520, and the closing price on the Nasdaq National Market for our ADSs on May 27, 2005 was $32.45 per ADS. The
market price of our shares and ADSs is likely to fluctuate in the future.



BECAUSE OF DAILY PRICE RANGE LIMITATIONS UNDER JAPANESE STOCK EXCHANGE RULES, YOU MAY NOT BE ABLE TO SELL YOUR SHARES OF OUR COMMON STOCK AT A PARTICULAR PRICE ON ANY PARTICULAR TRADING DAY, OR AT ALL.



Stock prices on Japanese stock exchanges are determined on a real-time basis
by the equilibrium between bids and offers. These exchanges are order-driven markets without specialists or market makers to guide price formation. To prevent excessive volatility, these exchange set daily upward and downward price fluctuation
limits for each stock, based on the previous days closing price. Although transactions may continue at the upward or downward limit price if the limit price is reached on a particular trading day, no transactions may take place outside these
limits. Consequently, an investor wishing to sell at a price above or below the relevant daily limit may not be able to sell his or her shares at such price on a particular trading day, or at all.



- 14 -



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THE RIGHTS OF SMALL SHAREHOLDERS ARE LIMITED UNDER THE JAPANESE UNIT SHARE SYSTEM.



Our Articles of Incorporation provide that 500 shares of our common stock
constitute one unit. The Japanese Commercial Code restricts the rights of shares that do not constitute whole units. Holders of shares constituting less than one unit do not have the right to vote. Each ADS offered in the offering
represents the right to receive one share. A holder who owns less than 500 ADSs will indirectly own less than a whole unit. Under the deposit agreement governing the rights of ADS holders, in order to withdraw any shares, an ADS holder must
surrender ADRs evidencing 500 ADSs or a multiple of 500 ADSs. Each ADR will bear a legend to that effect. Under the unit share system, holders of less than a unit have the right to require us to purchase their shares. Holders of ADSs that represent
other than multiples of whole units cannot withdraw the underlying shares representing less than one unit. They will, therefore, be unable, as a practical matter, to:



| |  | exercise the right to require us to purchase the underlying shares, or
|- |  | ----------------------------------------------------------------------



| |  | receive cash settlement in lieu of withdrawal.
|- |  | ----------------------------------------------



As result, as a holder of ADSs, you will not be able to access the Japanese markets through the withdrawal mechanism to sell shares in lots of less than
one unit.



AS A HOLDER OF ADSs, YOU WILL HAVE FEWER RIGHTS THAN A
SHAREHOLDER HAS AND YOU WILL HAVE TO ACT THROUGH THE DEPOSITARY TO EXERCISE THOSE RIGHTS.



The rights of shareholders under Japanese law to take actions, including voting their shares, receiving dividends and distributions, bringing derivative actions, examining our accounting books and records and
exercising appraisal rights are available only to holders of record. Because the depositary, through its custodian agents, is the record holder of the shares underlying the ADSs, only the depositary can exercise those rights in connection with the
deposited shares. The depositary will make efforts to vote the shares underlying your ADSs as instructed by you and will pay you the dividends and distributions collected from us. However, in your capacity as an ADS holder, you will not be able to
bring a derivative action, examine the accounting books and our records or exercise appraisal rights through the depositary.



RIGHTS OF SHAREHOLDERS UNDER JAPANESE LAW MAY BE MORE LIMITED THAN UNDER THE LAW OF OTHER JURISDICTIONS.



Our Articles of Incorporation, our Board of Directors regulations and
the Japanese Commercial Code govern our corporate affairs. Legal principles relating to such matters as the validity of corporate procedures, directors and officers fiduciary duties and shareholders rights may be different from
those that would apply if we were a non-Japanese company. For example, under the Japanese Commercial Code, only holders of 3% or more of the issued and outstanding shares are entitled to examine our accounting books and records. Shareholders
rights under Japanese law may not be as extensive as shareholders rights under the laws of other countries. You may have more difficulty in asserting your rights as a shareholder than you would as a shareholder of a corporation organized in
another jurisdiction. In addition, Japanese courts may not be willing to enforce liabilities against us in actions brought in Japan which are based upon the securities laws of the United States or any U.S. state.



- 15 -



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Item 4. Information on the Company.



A. History and Development of the Company.



We develop, market and support antivirus and Internet content security software and services. Our legal name in Japan is Trend Micro Kabushiki Kaisha
and Trend Micro Incorporated in the U.S. Our commercial name in both Japan and the U.S. is Trend Micro. Founded in 1988 by Steve Chang, we led the migration of virus protection from the desktop to the network server and the Internet gateway. Today,
through Trend Micro Enterprise Protection Strategy, we focus on providing customers with an approach to managing the impact of mixed threats such as the NIMDA and Code Red viruses.



We were established in 1989 as a Taiwanese company. Through a series of transactions in August 1996, Trend Micro Kabushiki
Kaisha (a joint stock corporation) which was established in October 1988, became the parent company of the Trend Micro group.



Our head office is located at Shinjuku MAYNDS Tower, 1-1, Yoyogi 2-Chome, Shibuya-ku, Tokyo 151-0053, Japan. Our telephone number is 81-3-5334-3600. Our
North American headquarter is in Cupertino, California, U.S.A. and we have business units worldwide. Our agent for service of process in the United States is Eva Chen, Director, c/o Trend Micro Inc., 10101 N. De Anza Blvd., Cupertino, California
95014.



We began commercial operations in May 1989, shortly
after computer viruses were first detected, and we completed our initial public offering on the Japanese over-the-counter market in August 1998. We listed American Depositary Shares on the Nasdaq National Market in July 1999 in connection with a
global offering of 12,750,000 shares in the form of shares and ADRs. In August 2000 we listed on the first section of Tokyo Stock Exchange.



We currently have more than 2,600 employees and are represented more than 30 countries.



- 16 -



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B. Business Overview.



INDUSTRY BACKGROUND



A computer virus is a programa piece of executable codethat has the unique ability to replicate. Like biological viruses, computer viruses can
spread quickly and are often difficult to eradicate. With e mail now used as an essential business communication tool, viruses are spreading faster than ever. Viruses attached to email messages can infect an entire enterprise in a matter of minutes,
which may cost companies millions of dollars annually in lost productivity and clean-up expenses. Mixed-threat attacks like NIMDA, threaten computer systems at multiple levels.



In response to the virus threat, the antivirus software market has grown significantly in the past few years and is expected
to continue to grow in the future. According to International Data Corporation, an independent research organization, in 2003, worldwide revenue for antivirus software reached $2.6 billion, representing a 21% growth over 2002 revenue and estimates
that this market will increase at a 12.5% compound annual growth rate and reach $4.8 billion by 2008.



Our vision is to create A world safe for exchanging digital information. We offer solutions to prevent the invasion of viruses and other
malicious content into corporate networks, small and medium business networks and individual PCs.



Network systems including the Internet are an integral part of corporate activities and life at home. However, the methods viruses use to access computers
have become more elaborate and malicious, causing serious problems for users. Furthermore, problems are arising where spyware, spam and inappropriate Web use diminish the functionality and efficiency of network and Internet use.



Against this backdrop, the needs of corporate networks and individual users
for security vendors have expanded and intensified. Our role extends beyond merely developing and selling security products. We also provide services to offer a more effective security solution. Through this business model, we are contributing to
the development of a digital society around the world.



Our
products and services have evolved with the development of the antivirus software market. Initially, our sales of antivirus software products consisted primarily of sales of our desktop programs, such as PC-cillin/Virus Buster, which were introduced
in Japan in 1991. To meet increased demand for network-based products as companies shifted from stand-alone desktop personal computers to client-server enterprise networks in the early 1990s, we introduced LANprotect, our first server application,
in 1993. To address the increased risk of virus infection for enterprise networks resulting from widespread use of the Internet, we introduced InterScan VirusWall in 1996 to provide real-time scanning at the Internet gateway, the point where data
enters the network from the Internet. In 1998 we introduced Trend Virus Control System, the forerunner of Trend Micro Control Manager (described below) to enable network-wide antivirus software to monitor, update and manage from a central management
console. Since 1998 we have continued to develop our Internet security solutions, and in 2002 we unveiled Trend Micro Enterprise Protection Strategy, which is described below.



- 17 -



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Trend Micro Enterprise Protection Strategy



Trend Micro Enterprise Protection Strategy, our threat and outbreak management strategy to prevent computer viruses, is
implemented using centralized management of an integrated security suite and outbreak prevention appliance. This solution is supported by real-time, threat-specific knowledge from TrendLabs, Trend Micros global network of security experts.



We help enable IT managers to proactively manage the outbreak
lifecycle. This lifecycle consists of four phasesvulnerability prevention, outbreak prevention, virus response and assessment and restoration.



Vulnerability Prevention



In this phase, vulnerability assessment tools help enforce security policies, block noncompliant devices from network access and isolate specific
threat-related vulnerabilities to pre-empt attacks. Trend Micro Vulnerability Assessment is a key product component of this phase. Centrally managed by Trend Micro Control Manager, a centralized outbreak management console, Vulnerability Assessment
integrates with other Trend Micro products and services to identify vulnerabilities in the network. Vulnerability Assessment determines risk ratings to alert IT managers of specific viruses correlated with system vulnerabilities and identifies
patches needed to prevent exploits. Leveraging data from Vulnerability Assessment, Trend Micro Network VirusWall (described below) assists IT managers to selectively perform the following actions:



| |  | Isolate unpatched machines for Microsoft operating system vulnerabilities before or at the onset of an outbreak.
|- |  | ----------------------------------------------------------------------------------------------------------------



| |  | Quarantine infected LAN segments to stop virus propagation.
|- |  | -----------------------------------------------------------



| |  | Check devices for the latest pattern files, scan engine, and antivirus software from major antivirus vendors, to control network access of noncompliant machines.
|- |  | -----------------------------------------------------------------------------------------------------------------------------------------------------------------



- 18 -



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Outbreak Prevention



The outbreak prevention phase is the critical period when a threat has been identified, but a pattern file or patch has not
yet been deployed. Without sufficient information, IT managers struggle to not only identify protective actions but also to deploy them effectively across the organization. Trend Micro Outbreak Prevention Services include outbreak prevention
policies, which are strategic recommendations to manage the various methods in attacking the virus and to assist IT managers in deflecting, isolating, and stopping virus outbreaks. Through Trend Micro Control Manager, outbreak prevention policies
can be deployed manually or automatically to block any combination of file extensions, executables, IP addresses, ports, instant message channels, and file transfer protocols. IT managers can use outbreak prevention policies to perform the following
actions:



| |  | Keep viruses from propagating and impeding network traffic;
|- |  | -----------------------------------------------------------



| |  | Automatically activate Trend Micro Damage Cleanup Services (described below) to ease administrative burden; and
|- |  | ---------------------------------------------------------------------------------------------------------------



| |  | Generate detailed reports for threat analyses.
|- |  | ----------------------------------------------



Virus Response



The virus response phase of the outbreak lifecycle occurs during the deployment of a pattern file, network signature, or patch. This reactive phase is the
single focus of most antivirus products. In contrast, Trend Micro Control Manager coordinates virus response with outbreak prevention policies to enable proactive outbreak lifecycle management from a central console. Our scanning engines provide IT
managers with the following benefits:



| |  | Comprehensive protection with virus scanning and detection at both the network layer and the application layer;
|- |  | ---------------------------------------------------------------------------------------------------------------



| |  | Increased accuracy, scanning performance and virus detection with scanning engines that search for viruses based on the identified threat; and
|- |  | ----------------------------------------------------------------------------------------------------------------------------------------------



| |  | A guarantee (Trend Micro Service Level Agreement) that new virus pattern files will be delivered within two hours of virus case submission or Trend Micro will pay a certain penalty
fee depending on the terms of the agreement entered into with the customer.
|- |  | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



Assessment and Restoration



The assessment and restoration phase of the outbreak management lifecycle is the period after a pattern file, network signature, or patch is deployed and the virus has been contained. Cleaning the network of virus remnants and restoring
systems is tedious and costly because most organizations perform these tasks manually. In contrast, Trend Micro Damage Cleanup Services automate clean-up and restoration to mitigate administrative cost and burden. Centrally managed through Trend
Micro Control Manager, Damage Cleanup Services feature agent-less remote deployment, allowing IT managers to assess, clean, and restore infected PCs and servers located in remote locations without end-user intervention. Damage Cleanup Services are
designed to result in cost-effective clean-up by helping IT managers do the following:



| |  | Prevent re-infection by removing memory resident worms and Trojans (a type of virus that can conceal itself) and their effects, such as unwanted registry entries and viral files;
|- |  | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  | Reduce administrative burden via coordination with outbreak prevention policies; and
|- |  | ------------------------------------------------------------------------------------



| |  | Perform consistent clean up aided by detailed reports from Trend Micro Control Manager.
|- |  | ---------------------------------------------------------------------------------------



- 19 -



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Distribution of a Defective Virus Pattern File in April 2005



On April 23, Trend Micro published pattern file 2.594.00 with the intent to
protect customers from a new type of BOT virus that could cause an infected PC to become a launching point for spam. Given the number of variants of this threat and what they are designed to do, we believe they have the potential to cause great
damage to users and puts at risk the safety and integrity of the networks through which they might spread. Unfortunately, pattern file 2.594.00, which employed a new, generic unpacking and heuristic script technology designed to detect and eliminate
these new types of BOT viruses and their variants, generated some performance conflict with computers running on Microsoft Windows XP and certain other operating systems. As a result, this caused the impacted machines to experience high CPU
consumption and subsequent system instability.



For any
customers experiencing instability, Trend Micro has provided a set of solutions which can be found under the Support section of Trend Micros website. Additionally, Trend Micro has extended support hours especially to help those customers who
had this special intersection of circumstances and were affected by this issue. Trend Micro continued testing in order to fully understand initial assessments and fix the issue. We found that the pattern file caused performance issues on systems
with Scan Engine 7.5 and above while scanning a particular type of executable file found in certain versions of operating system service packs. Owing to a large number of variants discovered by our researchers of a particular BOT threat (each of
which used a different compression algorithm), Trend Micro enhanced the decompression ability of its pattern file with a view to prevent further variants of this BOT from infecting customers. However, within pattern file 2.594.00, TrendLabs included
support for 3 additional heuristic patterns, including UltraProtect decompression support, which is used by several WORM_RBOT variants. Due to an isolated anomaly in the engineering, development and pattern release process, the UltraProtect
decompression may in certain circumstances cause some systems to experience high CPU power consumption, which can lead to system instability when this specific file type is scanned using pattern file 2.594.00.



Through its analysis, Trend Micro has determined that while pattern file
2.594.00 was designed to prevent several new variants of a fairly new type of BOT threat from infecting its customers, the issues with pattern file 2.594.00 were caused by how the testing was conducted for this type of solution. Therefore, we are
taking the following steps to ensure that future instances of this issue do not occur.



| |  | We have invested in additional resources to immediately improve our development, review, testing and monitoring processes to ensure efficient execution of Trend Micro virus pattern
signatures.
|- |  | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  | We are developing an automated method within the tool used to create virus pattern signatures. This automation would help to determine the potential for possible future instances of
high CPU utilization caused by our pattern files.
|- |  | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  | We are enhancing the Scan Engine to include a self-monitoring mechanism.
|- |  | ------------------------------------------------------------------------



We are increasing the scope and support of our testing coverage and of our processes to prevent reoccurrence of such issues.



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Trend Micro Products and Services



Our products and services are designed to deliver coordinated protection at the file, application, data, and network layers
to proactively manage the outbreak lifecycle. Our solutions, described in more detail below, operate across a range of computer operating system platforms, including Windows Server 2003, Windows NT, Windows 98/XP/2000, Linux, Sun Solaris and several
versions of UNIX. Our products protect all entry points in the network.



Management Product



Trend Micro Control Manager is a centralized outbreak management console designed to simplify enterprise-wide coordination of outbreak security actions and management of Trend Micro products and services. Trend Micro Control Manager acts as
a central command center for deployment of Trend Micros threat-specific expertise across the network and to select third-party products to proactively manage outbreaks. Designed to deliver the flexibility and scalability organizations need,
Trend Micro Control Manager offers a multi-tier management structure with customization options for expanded control. Robust graphical reporting provides vital security insights, such as sources of infections or vulnerabilities and consolidated,
detailed information regarding virus events or unusual activities.



Network Product



Trend
Micro Network VirusWall is an outbreak prevention appliance that assists organizations in stopping network viruses such as MSBLAST and NETSKY. It also blocks high threat vulnerabilities during outbreaks and quarantines and cleans infection sources
including unprotected devices as they enter the network. Trend Micro Network VirusWall does not only monitor threats or provide threat information but also helps organizations take precise outbreak security actions and proactively detects, prevents,
contain and eliminates outbreaks. By deploying Trend Micro Network VirusWall in network LAN segments, organizations can significantly reduce their security risk, network downtime and outbreak management burden. Trend Micro Network VirusWall supports
the Trend Micro Enterprise Protection Strategy and is managed by Trend Micro Control Manager.



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Internet Gateway Products



Trend Micro Spam Prevention Solution is a high-performance anti-spam
application that blocks non-productive and malicious spam at the Internet gateway. It employs patent-pending, heuristic technology that can evaluate, identify and monitor existing and new messages using multiple spam email characteristics, providing
highly accurate spam capture rates with very low false positives. Flexible configuration options allow administrators to set different spam-catching sensitivities for various spam categories and can delete suspected spam immediately to help
alleviate congestion on downstream servers. An easy-to-use configuration menu, designed to hide the complexity of the underlying Anti-Spam Engine technology, helps enable administrators to implement updates without changing the existing rules
structure. The Anti-Spam Engine technology is integrated within Trend Micro InterScan Messaging Security Suite, which provides antivirus and content security offerings. Spam Prevention Solution runs seamlessly with third-party Message Transfer
Agents and mail servers. Trend Micro Spam Prevention Solution sits at the gateway, analyzing messages while in-transit, to address the performance and scalability requirements of the global enterprise.



Trend Micro InterScan Messaging Security Suite is an extensible messaging
security platform for the gateway that addresses mixed-threat attacks by delivering coordinated policies for antivirus, anti-spam, and content security. Trend Micro InterScan Messaging Security Suite helps IT managers minimize time-consuming
installation and configuration for multiple messaging security solutions. Its extensible, platform approach to messaging security provides enhanced protection from multi-vector attacks which simultaneously deploy aggressive tactics to infiltrate
network defenses. Deployed with Trend Micro Control Manager, it provides enterprise-wide visibility of the messaging security platform, allowing centralized reporting and configuration, pattern file and scan engine updates, and management of Trend
Micro Outbreak Prevention Servicesall accessible via remote administration.



InterScan Web Security Suite is designed to deliver high-performance, scalable Web security at the gateway for both HTTP (Hyper-text Transfer Protocol) and FTP (File Transfer Protocol) traffic. Specifically designed
to improve the Web user experience, InterScan Web Security Suite addresses the performance decline associated with the natural latency introduced by virus scanning. InterScan Web Security Suite can support both standalone and Internet Content
Adaptation Protocol scanning, offering flexible Web security for the enterprise. Designed for alternative configurations and future applications, this new architecture coupled with the Trend Micro Enterprise Protection Strategy, extends the benefits
of outbreak lifecycle management to Web-based traffic, resulting in a lower cost and longer-term investment.



InterScan VirusWall provides high-performance, comprehensive Internet gateway protection against viruses and malicious codes. The optional eManager
plug-in offers administrators additional tools for spam blocking, content filtering, and email scheduling.



InterScan eManager provides real-time content filtering, spam blocking, and reporting to help companies monitor and control the type of information that
enters or leaves the network. The optional eManager plug-in integrates seamlessly with InterScan VirusWall to safeguard intellectual property and confidential information, block inappropriate email and attachments, and protect against viruses.
InterScan eManager also enables Trend Micro Outbreak Prevention Services to provide proactive protection against virus outbreaks by deploying attack-specific policies to contain the outbreak.



InterScan AppletTrap protects against known and unknown malicious programs
written in ActiveX, JavaScript, and VBScript codes at the Internet gateway. AppletTrap features patented technologies including Java instrumentation to monitor applet behavior in real time. Its patented, multi-tiered process safeguards enterprise
computing environments through analysis and verification of digital certificates, filtering for known malicious code, and monitoring the behavior of unsigned code at the client browser to help protect against unknown malicious applets. A centrally
managed policy-based management tool, AppletTrap requires no client deployment and is transparent to end users.



Trend Micro InterScan VirusWall for Small and Medium Business, a comprehensive gateway antivirus, anti-spam and content filtering solution, protects
against malicious threats at the gateway before they reach the interior of your network. Designed for growing companies, it filters Internet email and Web traffic to ensure that email and Web contents are free of viruses and spam. InterScan
VirusWall for Small and Medium Business features a single point of management with an intuitive interface that facilitates administration and lowers the total lifetime cost of your security strategy. InterScan VirusWall for Small and Medium Business
provides a high degree of protection at the gateway, featuring in-depth scans of SMTP (Simple Mail Transfer Protocol), HTTP, and FTP streams. Furthermore, it also checks POP3 (Post Office Protocol 3) traffic helping to ensure that networks are
protected even when employees access their Internet email accounts. Integrated anti-spam and email content filtering also help maintain productivity and ensure the appropriate use of Internet resources.



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Email and Groupware Products



ScanMail for Microsoft Exchange provides real-time detection and removal of
viruses from email and attachments before they reach the desktop. It is easy to deploy and configure via either a Web or Windows-based management console. Coupled with the ScanMail eManager plug-in, it provides comprehensive content filtering to
help block non-business email and filter inappropriate content in emails and attachments. ScanMail is fully integrated with the latest Microsoft APIs and supports Microsoft Exchange 5.5, Microsoft Exchange 2000, and Exchange 2003 servers.



ScanMail eManager provides real-time content filtering, spam
blocking, and reporting to help companies monitor and control the type of information that enters or leaves the network. The optional eManager plug-in integrates seamlessly with ScanMail for Microsoft Exchange and ScanMail for Lotus
Notesto safeguard intellectual property and confidential information, block
inappropriate email and attachments, and protect against viruses. eManager also enables Trend Micro Outbreak Prevention Services to provide proactive protection against virus outbreaks by deploying attack-specific policies to contain the outbreak.



ScanMail for Lotus Domino offers comprehensive virus
protection and content security for the Lotus Domino environment. It scans viruses hidden in databases and email attachments, and it also protects collaboration tools such as Lotus Sametime and Quickplace. ScanMail is designed to operate as a native
Domino server application and provides administrators with a familiar, intuitive interface. It supports Microsoft Windows 2000, Sun Solaris, IBM AIX, S/390, AS/400, Red Hat Linux, and SuSE.



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File Server and Storage Products



Trend Micro ServerProtect provides antivirus scanning for servers or storage
appliances. It detects and removes viruses from files and compressed files in real time before they reach the end user. Administrators can use a Windows-based console for centralized management of virus outbreaks, virus scanning, virus pattern file
updates, notifications, and remote installation. ServerProtect supports Microsoft Windows Server 2003, Microsoft Windows 2000, Microsoft Windows NT 4, Linux, Novell NetWare servers, Network Appliance filers, and EMC celerra.



Trend Micro PortalProtect provides comprehensive virus protection and content
security for enterprise information portal (EIP) systems and their users. Designed for specific use with EIP systems built using Microsoft SharePoint Portal Server, PortalProtect offers integration with the Microsoft Virus Scanning API and other
Microsoft technologies.



Desktop Products



OfficeScan Corporate Edition provides comprehensive
virus protection for desktop and mobile clients. OfficeScan offers centralized management features, which allow administrators to fully manage and enforce antivirus policies across the entire organization. Designed to provide reliable and
transparent virus scanning and virus removal, OfficeScan incorporates robust damage cleanup services that help remove malicious codes and repair system damages.



Trend Micro PC-cillin Internet Security provides comprehensive and easy-to-use protection from viruses, hackers, and other Internet-based threats. Its
new advanced features go far beyond standard antivirus and firewall protection, helping to safeguard your PC from new emerging threats like network viruses, spam email, inappropriate web content, and spyware programs that can compromise your
privacy. The Network Virus Emergency Center provides the most advanced protection from todays fast spreading network viruses such as MSBLAST, SOBIG, and Code Red. It proactively warns users about new network virus outbreaks and scans for these
viruses at the network firewall level where they attempt to penetrate your PC. If network virus activity is detected, it can automatically invoke the Internet Lock feature stopping the virus from infecting the PC and spreading to other computers.
PC-cillin Internet Security also includes a powerful new anti-spam scanner that detects and flags annoying and potentially dangerous unwanted email. For business travelers, the Firewall Profiles feature allows users to quickly adjust security
control levels for different network environments such as home, work, Wi-Fi (Wireless Fidelity), and on the road. Trend Micro PC-cillin Internet Security is backed by our technical support.



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Services and Support



We provide several industry-unique services that complement our products, including information deployment and
attack-specific policies and cleaning templates that help minimize the impact of network viruses, network vulnerabilities, and mixed-threat attacks. We offer a range of services, backed by timely knowledge and expertise from TrendLabs, including
Trend Micro Vulnerability Assessment, Trend Micro Outbreak Prevention Services, Virus Response Services, and Trend Micro Damage Cleanup Services, to help customers manage all phases of the virus outbreak lifecycle.



Virus Response Service Level Agreement guarantees customers that fully tested
virus pattern files will be delivered within two hours from the time a virus case is submitted. If we fail, however, based on the terms of the agreement entered into with the customer, we may make a penalty payment which may amount up to 100% of the
initial sale price.



Premium Support Program provides customers
with timely assistance that combines rapid response times with technical and computer security expertise to quickly address customer issues. A wide range of service plan options are offered that provide varying levels of personalized customer
service from enhanced online support to dedicated on-site support.



Our products are backed by TrendLabs, a global network of antivirus research and support centers with an ISO9001:2000 and Customer Operations Performance Center (COPC)-2000 standards-certified headquarters. COPC-2000 is a comprehensive
operations performance standard that specifies minimum operational requirements in critical functional areas that are important to end users and clients. A team of more than 250 engineers and antivirus specialists operate around the clock to monitor
virus activity, develop information on new threats, and deliver prompt, effective services designed to deal with specific threats.



Seasonality



Our quarterly net sales are subject to seasonal fluctuations. For example, net sales of corporate products in Japan may be lower in the quarters ending
June and December, and higher in the quarters ending March and September, while net sales of consumer products in Japan may be higher in the quarter ending December. Net sales of corporate products in the U.S. and Europe may be lower in the quarter
ending March and higher in the quarter ending December.



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SALES AND MARKETING



Our products are generally sold to corporate customers on a per-user license basis through our channel partners which include systems integrators,
distributors, and value-added resellers, with the remaining portion consisting largely of package software sales through channel partners and our online Web stores. We view our channel partnerships as key to our success. Our support programs, such
as training and certification programs for our products, help cultivate relationships with our channel partners. Channel partners are integral to increasing the brand recognition and visibility of Trend Micro products and services in the network
antivirus and Internet content security market.



In our
marketing strategy, Trend Micro Enterprise Protection Strategy plays a central role. By emphasizing this industry-unique approach through media and industry analyst community, interest for Trend Micro products and services is generated at the
customer level primarily through our channel partners as well as through our global Web sites, corporate alliances, advertising in trade and business publications, customer references, direct marketing campaigns, and trade shows and events
worldwide. Furthermore, an extensive and expertise-driven service and support organization contribute to customer loyalty. Current marketing efforts are targeted at a combination of enterprise, small and medium businesses, as well as consumer and
broadband customers.



Regional Overview



Japan



Overview. We sell our products in Japan to both corporate and
individual end users primarily through systems integrators and distributors, and conduct a limited amount of direct sales to end users, including online sales through a resellers website. Our Japan net sales accounted for approximately 41% of
our net sales or (Yen)25.4 billion in 2004, approximately 42% or (Yen)20.1 billion in 2003 and approximately 43% or (Yen)18.4 billion in 2002.



Distribution Through Systems Integrators and Distributors. Virtually all sales to Japanese corporate users are made through systems integrators. In
Japan, systems integrators play a large role in delivering management information services, providing primary computer support services such as installation, systems integration, upgrades, and maintenance.



Relationship with SOFTBANK. Since 1996, we have entered into numerous
agreements with SOFTBANK in connection with the distribution of our products in Japan by SOFTBANK. Currently, all distribution by SOFTBANK of our products in Japan is covered by an October 1999 distribution agreement with SOFTBANK BB, an indirect
wholly-owned subsidiary of SOFTBANK. This distribution agreement gives SOFTBANK BB the non-exclusive right in Japan to distribute all of our products. It is automatically renewable for successive one-year terms, unless either party exercises its
right of non-renewal by giving prior written notice. The October 1999 distribution agreement supersedes all prior agreements between SOFTBANK and us relating to distribution of our products. We make rebate payments to SOFTBANK based on
SOFTBANKs achievement of sales targets agreed upon between SOFTBANK and us.



Historically, a significant percentage of our Japan net sales have been sales to SOFTBANK. For example, sales to SOFTBANK BB totaled approximately (Yen)10.1 billion or 23.6% of net sales in 2002, (Yen)9.2 billion or
19.1% of net sales in 2003 and (Yen)10.4 billion ($101.0 million) or 16.8% of net sales in 2004. The majority of sales to SOFTBANK BB in 2001, 2002, and 2003 consisted of SOFTBANK BBs sales of our products to systems integrators.



Service Provider and Other Relationships. We contracted with Nifty,
NTT-Communications, Internet Initiative Japan, Cable & Wireless IDC and NTT-ME, to license InterScan VirusWall technology to them which enables them to provide virus scanning service to their subscribers. We entered into agreements with SECOM
Trust net, Hitachi Software Engineering, Fujitsu Business Systems and Otsuka Shokai which allow them to provide antivirus outsourcing service to their customers.



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North America



Overview. Our North American region includes the United States and Canada, with headquarters in Cupertino,
California. Products are sold through distributors, value-added resellers and managed service providers. Our North America net sales accounted for approximately 19% of our net sales or (Yen)11.9 billion in 2004, approximately 20% or (Yen)9.6 billion
in 2003 and approximately 21% or (Yen)9.2 billion in 2002.



Distributors. The majority of our North American revenue is from sales of site licenses to corporate users. Principal distributors in the U.S. include Ingram Micro (CA), Ingram Micro (NY), Tech Data, and Synnex. In Canada, principal
distributors include Interwork Technologies, Ingram Micro Canada and Tech Data Canada.



Our customers in the U.S. include the U.S. federal and state government agencies, educational institutions, large corporations from all industries, and small and medium sized businesses. A majority of the contracts
were comprised of Internet gateway and e-mail and groupware products as described above.



Europe, the Middle East and Africa



Overview. We are represented throughout Europe, the Middle East and Africa (EMEA), with offices in Germany, France, Italy, Spain, U.K., Norway, Sweden, the Netherlands, Belgium, and United Arab Emirates. Our
European Support Center, which is located in Munich, Germany, offers real-time technical support and antivirus expertise to our channel partners throughout Europe. Our EMEA net sales accounted for approximately 26% of our net sales or (Yen)16.4
billion in 2004, approximately 25% or (Yen)12.1 billion in 2003 and approximately 23% or (Yen)9.8 billion in 2002.



Distributors. The majority of European revenues are from sales of site licenses to corporate users. Principal distributors for the EMEA region
include: Belgium/Luxembourg: Logix, Risc Technology, NOXS and Solution Wiz (consumer/SoHo products). Netherlands: Risc, NOXS, Solution Wiz (consumer and SoHo products). Middle East/Africa: SecureData, Online Distribution and Hilan Tech. France: Cris
Reseaux, IP Vista, Risc, Risc Technology, ComputerLinks, InfoManage (Switzerland) and Config (North Africa). Germany: ComputerLinks AG, Entrada Kommunikations GmbH, ICON Systems GmbH, Infinigate Deutschland GmbH and Tech Data Midrange GmbH. Italy:
IT Way SPA, Computer GROSS, ComputerLinks, Esprinet SPA and J.Soft SRL. Nordic Region: Network Technologies A/S (Denmark), Itegra AB (Sweden), Securesoft AB (Sweden), Scribona AS (Norway), Itegra AS (Norway) and Securesoft OY (Finland). Spain: ADD,
AFINA, GTI and Diode (effective June 2003) UK: e92plus Ltd, Sphinx and Unipalm.



Our customers in EMEA include various government departments, educational institutions, large corporations and small and medium sized businesses. A majority of the contracts include Internet gateway, email server, and
client server products as described above.



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Asia Pacific



Overview. We are represented throughout the Asia Pacific region (excluding Japan), with offices in Taiwan, Hong Kong,
China, Singapore, Malaysia, Thailand, Indonesia, India, Korea, Australia, and New Zealand. Trend Micros ISO9001:2000 and COPC-2000 standards-certified headquarters for TrendLabs, our global product support and antivirus research center, is
located in Manila, the Philippines; this facility and others like it provide continuous 24 hours-a-day, seven-days-a week coverage to our customers around the world. Our Asia Pacific net sales accounted for approximately 10% of our net sales or
(Yen)6.3 billion in 2004, approximately 10% or (Yen)4.8 billion in 2003 and approximately 10% or (Yen)4.2 billion in 2002.



Distributors. The majority of Asia Pacific revenue is from sales of site licenses to corporate users and consumer products to home users. Principal
distributors in Asia Pacific include: Taiwan: TWP, UCOM and Jetwell Computer. Hong Kong: Datalink, SIS, and Digital China. China: Dawncom Business Technology and Service and Secure China Global Communication. South Asia: Ingram Micro, ACA Pacific,
ECS Computer, Select Technologies. Korea: Daou System, Intercom Software and Sun Tek. Australia: Alstom IT, Ingram Micro, and Channelworx. New Zealand: Lan One and Soft Solutions.



Our customers in Asia Pacific include local government departments and agencies and large corporations from various industry
sectors like commercial banking, telecommunications, Internet service providers, and other service providers over the Internet and securities firms. A majority of the contracts include the purchase of Internet gateway, client PC, and server products
as described above.



Latin America



Overview. Our Latin America Region (LAR) includes the countries
located in South America, Central America, the Caribbean, as well as Mexico. Our LAR has offices established in Mexico and Brazil. Products are sold through a network of distributors and resellers, with the majority of LAR revenues derived from
sales of software licenses to corporate users. Our Latin America net sales accounted for approximately 3% of our net sales or (Yen)2.0 billion in 2004, approximately 3% or (Yen)1.5 billion in 2003 and approximately 3% or (Yen)1.4 billion in 2002.



Distributors. The bulk of Latin American revenue is
from sales of software licenses through distributors and resellers to enterprise users. Principal distributors in Latin America include Afina (Latin America), CNT (Brazil) and Mude (Brazil).



Our customers in the Latin America Region include various government
agencies, and large corporations from the commercial banking, energy, securities and telecommunication sectors.



OPERATIONS



In Japan, we outsource assembly, packaging and shipping of all of our anti-virus software products to value-added resellers. Our Taiwanese subsidiary and,
in some cases, third-party service providers assemble, package, and ship products to be sold in the United States, Europe, and Asia other than Japan. Software products are generally shipped within seven days of receipt of an order and hardware
products are generally shipped within ten days. Accordingly, there is some minimal order backlog at all times.



LEGAL PROCEEDINGS



We
are involved in normal claims and other legal proceedings in the ordinary course of business, and are not involved in any litigation or other legal proceedings which, if determined adversely to us, would individually or in the aggregate have a
material adverse effect on us or our operations.



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C. Organizational Structure.



We are not, directly or indirectly, owned or controlled by other corporations or by the Japanese government or any foreign
government. The following table lists our consolidated subsidiaries as of April 30, 2005.



|                                        |  |                          |  |                                                   |  
|--------------------------------------- |  | ------------------------ |  | ------------------------------------------------- | -
|NAME                                    |  | COUNTRY OF INCORPORATION |  | EQUITY HELD BY TREND MICRO DIRECTLY OR INDIRECTLY |  
|Trend Micro Incorporated                |  | Taiwan                   |  | 99                                                | %
|                                        |  |                         
|Trend Micro Inc.                        |  | USA                      |  | 100                                               | %
|                                        |  |                         
|Trend Micro Korea Inc.                  |  | Korea                    |  | 99                                                | %
|                                        |  |                         
|Trend Micro Italy S.r.l.                |  | Italy                    |  | 100                                               | %
|                                        |  |                         
|Trend Micro Deutschland GmbH            |  | Germany                  |  | 100                                               | %
|                                        |  |                         
|Trend Micro Australia Pty. Ltd.         |  | Australia                |  | 100                                               | %
|                                        |  |                         
|Trend Micro do Brasil Ltda.             |  | Brazil                   |  | 99                                                | %
|                                        |  |                         
|Trend Micro France                      |  | France                   |  | 99                                                | %
|                                        |  |                         
|Trend Micro Hong Kong Limited           |  | China                    |  | 100                                               | %
|                                        |  |                         
|Trend Micro Latinoamerica S.A. de C.V.  |  | Mexico                   |  | 100                                               | %
|                                        |  |                         
|Trend Micro (UK) Limited                |  | UK                       |  | 100                                               | %
|                                        |  |                         
|Trend Micro (China) Incorporated        |  | China                    |  | 100                                               | %
|                                        |  |                         
|Servicentro TMLA, S.A. de C.V.          |  | Mexico                   |  | 100                                               | %
|                                        |  |                         
|Trend Micro (EMEA) Limited              |  | Ireland                  |  | 100                                               | %
|                                        |  |                         
|Trend Micro (Singapore) Private Limited |  | Singapore                |  | 99                                                | %
|                                        |  |                         
|Trend Micro (NZ) Limited                |  | NZ                       |  | 100                                               | %
|                                        |  |                         
|Trend Micro Malaysia Sdn. Bhd.          |  | Malaysia                 |  | 99                                                | %
|                                        |  |                         
|Trend Micro (Thailand) Limited          |  | Thailand                 |  | 91                                                | %



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D. Property, Plants and Equipment.



Our headquarters is located in Tokyo, Japan, where we lease an aggregate of 3,897 square meters of office space under a
lease contract which expires in April 2007. We also lease an aggregate of approximately 579 square meters of office space in Osaka, Fukuoka, and Nagoya.



We lease approximately 37,490 square feet of office space in Cupertino, California, U.S.A., under a lease which expires in January 2009. We also lease an aggregate of
approximately 17,290 square feet of office space in Marlow, United Kingdom., under a lease which expires in June 2013. We lease office space for our regional sales, research and development and sales office in Taiwan and for our customer service
center in the Philippines. We also lease small sales offices in Argentina, Australia, Benelux, Brazil, China, France, Germany, Hong Kong, India, Italy, Malaysia, Thailand, Mexico, Middle East-Africa, Norway, Belgium, Singapore, South Korea, Spain
and Sweden.



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Item 5. Operating and Financial Review and Prospects.



A. Operating Results.



You should read the following discussion together with the financial statements and notes included in this annual report.
Additionally, the following discussion includes forward-looking statements about our business and future performance. These forward-looking statements are based on our current assumptions and beliefs in light of the information currently available
to us, and involve known and unknown risks and uncertainties. You should read these forward-looking statements together with the description of the risks and uncertainties associated with these statements contained under the headings
Cautionary Statement Regarding Forward-Looking Statements immediately following the cover page and under Item 4.D. of this annual report.



OVERVIEW



Strategy



We develop,
market and support anti-virus software and management solutions for corporate computer systems and desktop personal computers. In the anti-virus industry there are two U.S. competitors having a higher global market share than we. These companies
have strong brand-name recognition and sales forces especially outside Japan because they have longer histories in the industry. They are also developing businesses supported by management resources larger than ours, including work forces and
financial strength under such circumstances, we aim for further growth by developing original solutions which respond to the evolution of computer viruses faster than our competitors by concentrating our management resources, by improving our
superiority in products and services with additional improvements in the specifications and performance of our products from the view point of customers, and by strengthening customers loyalty with our marketing development which is conscious
of customer attributes characterized by the differences in purchasing behavior.



While we specialize in the antivirus area, we have formed several alliances with dominant vendors in areas other than antivirus solutions. During this year, we announced affiliation with U.S. Cisco Systems, the
worlds largest network equipment vendor. As a result of the affiliation, we have now a plan to put our antivirus solutions on the market as internal functions of Ciscos routers, switches and security appliance products. We consider that
this sort of affiliation plays an important role in our sales strategy since we can expect effects of combination of products to be competitive in their respective areas and complement each others sales channels.



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Critical Accounting Estimates



The methods, estimates and judgments we use in applying our accounting policies have a significant impact on the results we
report in our financial statements, which we discuss under Results of Operations below. Some of our accounting policies require us to make difficult and subjective judgments, often as a result of the need to make estimates of matters
that are inherently uncertain. Our most critical accounting estimates include: judgment for revenue recognition which impacts our net sales; estimate of allowance for sales returns and allowance for doubtful accounts, which impacts our sales return
provision and doubtful accounts provision; recognition and measurement of income tax, current and deferred income tax assets and liabilities, which impacts our tax provision. We discuss these policies further, as well as the estimates and judgments
involved, below.



Revenue Recognition



We account for the licensing of software in accordance with Statement Of
Position (SOP) 97-2, Software Revenue Recognition, released by the American Institute of Certified Public Accountants. The application of SOP 97-2 requires judgment, including whether a software arrangement includes multiple
elements, and if so, whether vendor-specific objective evidence (VSOE) of fair value exists for those elements. End users receive certain elements of our products over a period of time. These elements include post-contract customer support services
which includes virus pattern updates, unspecified product version updates, telephone and online technical support, the fair value of which is recognized ratably over the service period. We allocate revenue to post-contract customer support services
based on the fair value of the post-contract customer support services, which is determined based on separate sales of renewals to customers. Changes to the elements in a software arrangement, the ability to identify VSOE for those elements and the
fair value of the respective elements could materially impact the amount of earned and unearned revenue.



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Allowance for Sales Returns and Allowance for Doubtful Accounts



We primarily sell retail packages through intermediaries. After sale of a
retail package, we may approve certain returns from intermediaries or end-users. Therefore, we must make estimates of potential future product returns related to current period product revenue. We analyze historical returns, current economic trends,
and changes in customer demand and acceptance of our products when evaluating the adequacy of the sales returns. Significant management judgments and estimates must be made and used in connection with establishing the sales returns in any accounting
period. Material differences may result in the amount and timing of our revenue for any period if management made different judgments or utilized different estimates. The balance of allowance for doubtful accounts and sales returns were (Yen) 293
million ($2,843 thousand) and (Yen) 572 million ($5,554 thousand) as of December 31, 2004, respectively. Similarly, we must make estimates of the uncollectability of our accounts receivables. We specifically analyze accounts receivable and analyzes
historical bad debts, customer concentrations, customer credit-worthiness, current economic trends and changes in our customer payment terms when evaluating the adequacy of the allowance for doubtful accounts. Our accounts receivable balance was
(Yen) 15,245 million ($148,012 thousand), net of allowance for doubtful accounts and sales returns of (Yen) 865 million ($8,397 thousand), as of December 31, 2004.



Income Taxes



As part of the process of preparing our consolidated financial statements, we are required to estimate our income taxes in each of the jurisdictions in
which we operate. This process involves our estimating our actual current tax exposure together with assessing temporary differences resulting from differing treatment of items, such as deferred revenue, for tax and accounting purposes. These
differences result in deferred tax assets and liabilities, which are included within our consolidated balance sheet. We must then assess the likelihood that our deferred tax assets will be recovered from future taxable income. To the extent we
believe that recovery is not likely, we must establish a valuation allowance. To the extent we establish a valuation allowance or increase this allowance in a period, we must include an expense within the tax provision in the statement of
operations.



Significant management judgment is required in
determining our provision for income taxes, our deferred tax assets and liabilities and any valuation allowance recorded against our net deferred tax assets. We have recorded this valuation allowance of (Yen) 181 million ($1,762 thousand) as of
December 31, 2004, due to uncertainties related to our ability to utilize some of our deferred tax assets, primarily consisting of certain net operating losses carried forward before they expire. The valuation allowance is based on our estimates of
taxable income by jurisdiction in which we operate and the period over which our deferred tax assets will be recoverable. In the event that actual results differ from these estimates or we adjust these estimates in future periods we may need to
establish an additional valuation allowance which could materially impact our financial position and results of operations.



The net deferred tax asset as of December 31, 2004 was (Yen) 7,921 million ($76,901 thousand), net of a valuation allowance of (Yen) 181 million ($1,762
thousand).



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POTENTIAL EFFECT ON OUR RESULTS OF OPERATIONS FROM DISTRIBUTION OF A DEFECTIVE VIRUS PATTERN FILE IN APRIL 2005



As described under in Item 4.B.- Distribution
of a Defective Virus Pattern File in April 2005, we distributed a defective virus file pattern that resulted in damage to the computers of our customers who downloaded the file. As described in Item 4.B., we took steps to resolve our
customers problems and ensure that a similar problem would not recur. While the ultimate effect on our results of operations for the year ending December 31, 2005 is still not known, as of June 10, 2005 we have incurred approximately (Yen) 584
million in costs and expenses related to this issue. However, the possibility of incurring further cost is undeniable. In addition, despite the fact that it is impossible to calculate the ultimate effect. Management expects this issue to result in
decreased.



RESULTS OF OPERATIONS



Our consolidated financial statements are denominated in Japanese yen. All
asset and liability accounts of our foreign subsidiaries are translated into Japanese yen at the year-end rates of exchange. We translate all income and expense accounts at rates of exchange that approximate those prevailing at the time of the
transactions and accumulate the resulting adjustments as a separate component of shareholders equity. We translate foreign currency-denominated receivables and payables into Japanese yen at year-end rates of exchange and recognize or expense
the resulting translation gains or losses on a current basis. Fluctuations in the exchange rate between the Japanese yen and other currencies, principally the U.S. dollar, Euro and the New Taiwan dollar, will affect the translation of the financial
results of our foreign subsidiaries into Japanese yen for purposes of our consolidated financial results, and will also affect the Japanese yen value of any amounts we receive from our subsidiaries.



The following table sets forth certain consolidated statements of income data
as a percentage of net sales for the periods indicated:



|                                         |  |                          |   |  |       |   |  |       |  
|---------------------------------------- |  | ------------------------ | - |  | ----- | - |  | ----- | -
|                                         |  | Years ended December 31, |  
|                                         |  | 2002                     |   |  | 2003  |   |  | 2004  |  
|Net sales                                |  | 100.0                    | % |  | 100.0 | % |  | 100.0 | %
|Cost of sales                            |  | 5.5                      | % |  | 6.6   | % |  | 5.2   | %
|                                         |  |                          |   |  |       |   |  |       |  
|Gross profit                             |  | 94.5                     | % |  | 93.4  | % |  | 94.8  | %
|                                         |  |                          |   |  |       |   |  |       |  
|Operating expenses:                      |  |                          |   |  |       |   |  |       |  
|Selling                                  |  | 35.0                     | % |  | 31.9  | % |  | 25.8  | %
|Research and development and maintenance |  | 8.1                      | % |  | 8.2   | % |  | 7.9   | %
|Customer Support                         |  | 9.0                      | % |  | 10.0  | % |  | 9.2   | %
|General and administrative               |  | 10.1                     | % |  | 11.8  | % |  | 9.9   | %
|                                         |  |                          |   |  |       |   |  |       |  
|Total operating expenses                 |  | 62.2                     | % |  | 61.9  | % |  | 52.8  | %
|                                         |  |                          |   |  |       |   |  |       |  
|Operating income                         |  | 32.3                     | % |  | 31.5  | % |  | 42.0  | %
|                                         |  |                          |   |  |       |   |  |       |  



- 34 -



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Our Revenue Structure



Our revenue is derived primarily from product revenue, which includes software product license and post-contract customer support (PCS) services. Product
revenue includes limited sales of our products to other companies for inclusion in their products. Revenue from our post-contract customer support services, which includes virus pattern updates, product version updates, telephone and online
technical support, is deferred and recognized ratably over the service period. We allocate revenue to post-contract customer support services based on the fair value of the post-contract customer support services, which are determined based on
separate sales of renewals to customers. Upon expiration of the initial term, corporate end users can renew the post-contract customer support services annually by paying a fee generally equal to one-half of the initial license fee in Japan and
between 20% and 50% of the initial license fee in the United States and elsewhere, depending on the country. For retail purchasers of PC-cillin/Virus Buster, the license fee includes post-contract customer support services for the initial one-year
term only. In order to receive post-contract customer support services after the initial term, these retail purchasers must pay a percentage, generally less than one-half, of the original license fee.



We generally recognize revenues from software product licenses when:



| |  |  | persuasive evidence of an arrangement exists;
| | - |  | ---------------------------------------------



| |  |  | the product has been delivered;
| | - |  | -------------------------------



| |  |  | the fee is fixed and determinable; and
| | - |  | --------------------------------------



| |  |  | collection of the resulting receivable is reasonably assured.
| | - |  | -------------------------------------------------------------



In general, we record sales revenues attributable to post-contract customer support services as deferred revenue and recognize such revenues ratably over
the license term. The percentage of the license fee which is deferred varies depending on the location of the Trend Micro entity making the sale, as well as the product sold.



In our operations, operating expenses tend to be substantially larger than cost of sales. This is primarily because cost of
sales consists of outbound shipping and handling costs, costs of producing manuals and packaging, and amortization of software development costs. Thus, our operating income is affected more by changes in operating expenses than by those in cost of
sales.



We operate our business in five geographic regions:
Japan, Europe, North America, Asia Pacific and Latin America. Japan accounted for around 40% and, together with Europe and North America, over 80% of our net sales for each of our last three fiscal years.



- 35 -



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Sales by Product and Service



The following table sets forth net sales by Product and Service for the periods indicated:



|                    |  |                                                                        |        |      |      |      |       |                       |  |      |  |       |        |  |   |         |  |      |  |     |  |     
|------------------- |  | ---------------------------------------------------------------------- | ------ | ---- | ---- | ---- | ----- | --------------------- |  | ---- |  | ----- | ------ |  | - | ------- |  | ---- |  | --- |  | ----
|                    |  | 2002                                                                   |        | 2003 |      | 2004 |       | Year over Year Growth
|                    |  | (in millions of yen and thousands of U.S. dollars, except percentages) |        | 2003 |      | 2004
|Server based        |  | (Yen)                                                                  | 5,218  |      | 12%  |      | (Yen) | 6,805                 |  | 14%  |  | (Yen) | 9,953  |  | $ | 96,635  |  | 16%  |  | 30% |  | 46% 
|Personal Computer   |  |                                                                        | 15,070 |      | 35%  |      |       | 16,679                |  | 35%  |  |       | 23,533 |  |   | 228,474 |  | 38%  |  | 11% |  | 41% 
|Retail sales        |  |                                                                        | 6,945  |      | 16%  |      |       | 8,141                 |  | 17%  |  |       | 12,384 |  |   | 120,230 |  | 20%  |  | 17% |  | 52% 
|Site license sales  |  |                                                                        | 8,125  |      | 19%  |      |       | 8,538                 |  | 18%  |  |       | 11,149 |  |   | 108,244 |  | 18%  |  | 5%  |  | 31% 
|Internet based      |  |                                                                        | 14,857 |      | 35%  |      |       | 14,323                |  | 30%  |  |       | 21,958 |  |   | 213,183 |  | 35%  |  | -4% |  | 53% 
|PCS*1 and Royalties |  |                                                                        | 6,659  |      | 15%  |      |       | 9,214                 |  | 19%  |  |       | 4,714  |  |   | 45,772  |  | 8 %  |  | 38% |  | -49%
|Other               |  |                                                                        | 1,176  |      | 3%   |      |       | 1,067                 |  | 2%   |  |       | 1,891  |  |   | 18,356  |  | 3 %  |  | -9% |  | 77 %
|                    |  |                                                                        |        |      |      |      |       |                       |  |      |  |       |        |  |   |         |  |      |  |     |  |     
|                    |  | (Yen)                                                                  | 42,980 |      | 100% |      | (Yen) | 48,088                |  | 100% |  | (Yen) | 62,049 |  | $ | 602,420 |  | 100% |  | 12% |  | 29% 
|                    |  |                                                                        |        |      |      |      |       |                       |  |      |  |       |        |  |   |         |  |      |  |     |  |     

---

|* | Post contract customer support fees
|- | ------------------------------------



- 36 -



---

We have some products that have several function across these categories. Based on our estimate of such products
usage, we have divided revenue from them into several categories for analysis purpose.



Net sales of post-contract customer support fees and royalties in 2004 decreased 49% from 2003. Until 2003, the renewal sales were categorized as post-contract customer support fees and royalties in the United Sates, because their system
could not separate the renewal sales amount by product. Because of the improvement of the system, the renewal sales amount can now be categorized by product. For descriptive purpose to compare 2004 to 2003, if such renewal sales amount had been
categorized as post-contract customer support fees and royalties in 2004 in the United States, this line item would have increased 6.2% in 2004 compared with 2003.



Net sales of Server based products in 2004 increased 46% compared with 2003 by increased sales of Trend Micro ServerProtect
and related Suite products, reflecting higher demand from small and medium sized companies for server-based products. If renewal sales amount had been categorized as post-contract customer support fees and royalties in 2004 in the United States as
mentioned above, this line item would have increased 34% in 2004 compared with 2003.



Within the personal computer product category, net sales of anti-virus software, including retail package sales of Trend Micro PC-cillin/Virus Buster series, increased from approximately (Yen) 16,679 million in 2003
to approximately (Yen) 23,533 million ($228,474 thousand) in 2004. Retail package sales of personal computer software increased due primarily to increased sales of our products, including the Virus Buster 2005 which we released in October 2004, in
the Japanese market. If renewal sales amount had been categorized as post-contract customer support fees and royalties in 2004 in the United States as mentioned above, this line item would have increased 35% in 2004 compared with 2003.



Net sales of internet-based products in 2004 increased 53% from 2003,
reflecting mainly increased sales of InterScan products in 2004 compared with 2003. If renewal sales amount had been categorized as post-contract customer support fees and royalties in 2004 in the United States as mentioned above, this line item
would have increased 32% in 2004 compared with 2003.



- 37 -



---

Net sales in 2003 increased 12% compared with 2002. The increase was due primarily to increased sales of
server-based products such as Trend Micro ServerProtect and related Suite products, reflecting higher small and medium sized companies demand for server-based products.



Net sales of internet-based products in 2003 decreased from 2002, reflecting mainly decreased sales of InterScan eManager in
2003 compared with 2002.



Our net sales also included revenues
from post-contract customer support fees and royalties. Net sales of post-contract customer support fees and royalties increased from 2002 to 2003 due primarily to increased renewals of post-contract customer support by corporate customers.



Within the personal computer product category, net sales of
anti-virus software, including retail package sales of Trend Micro PC-cillin/Virus Buster series, increased from approximately (Yen) 15,070 million in 2002 to approximately (Yen) 16,679 million in 2003. Retail package sales of personal computer
software increased due primarily to increased sales of our products, including the Virus Buster 2004 which we released in October 2003, in our Japanese market.



Our gross profit percentage in 2002, 2003 and 2004, was 94.5%, 93.4% and 94.8%, respectively. During those years, cost of sales did not change
substantially relative to net sales, and thus our gross profit remained relatively constant.



- 38 -



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Operating Expenses



Operating expenses for the three years ended December 31, 2004 were as follows:



|                                         |  |                          |  |                          |  |             |  |      |        
|---------------------------------------- |  | ------------------------ |  | ------------------------ |  | ----------- |  | ---- | -------
|                                         |  | Years ended December 31,
|                                         |  | 2002                     |  | 2003                     |  | 2004        |  | 2004
|                                         |  | Millions of yen          |  | Thousands ofU.S. dollars
|Operating expenses:                      |  |                          |  |                          |  |             |  |      |        
|Selling                                  |  | (Yen)15,052              |  | (Yen)15,360              |  | (Yen)16,009 |  | $    | 155,431
|Research and development and maintenance |  | 3,506                    |  | 3,919                    |  | 4,858       |  |      | 47,168 
|Customer Support                         |  | 3,858                    |  | 4,831                    |  | 5,724       |  |      | 55,567 
|General and administrative               |  | 4,344                    |  | 5,656                    |  | 6,144       |  |      | 59,651 
|                                         |  |                          |  |                          |  |             |  |      |        
|Total operating expenses                 |  | (Yen)26,760              |  | (Yen)29,766              |  | (Yen)32,735 |  | $    | 317,817
|                                         |  |                          |  |                          |  |             |  |      |        



Selling Expenses



Selling expenses consist primarily of advertising,
selling commissions, payroll and related expenses of sales and marketing department. Selling expenses increased (Yen) 649 million, or 4%, in 2004 compared with 2003, and increased (Yen) 308 million, or 2%, in 2003 compared with 2002.



The increase in 2004 compared with 2003 was due primarily to the increase in
the number of employees in the sales and marketing department. Additionally, in 2004, there was an increase in sales promotions over 2003. Channel development activity was stepped up in 2004 particularly in the United States and Europe.
This activity is mainly focused on seminars to boost the channel sales. And in 2004, we conducted major marketing activities in Japan to boost the sales of Virus Buster 2005, which we released in the fourth quarter of the year.



However, since our selling expenses consist mostly of fixed
costs, the percentage of selling expenses compared with net sales has decreased in the past two years.



The increase in 2003 compared with 2002 was due primarily to our investment in the development of sales channels, particularly in the United States and
Europe, to expand our customer base to small and medium-sized businesses, and the development of a global sales training program to handle the deployment of new types of products based on the Trend Micro Enterprise Protection Strategy described in
Item 4.B of this annual report.



- 39 -



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Research and Development and Maintenance Expenses



Research and development and maintenance expenses consist primarily of
payroll and related expenses for software engineers who develop and update our anti-virus software products. Research and development and maintenance expenses increased (Yen) 939 million, or 24%, in 2004 compared with 2003, and increased (Yen) 413
million, or 12%, in 2003 compared with 2002. All costs relating to research and development to establish the technological feasibility of our software products are expensed as incurred. In our software development process, technological feasibility
is established upon completion of all significant testing for the original English language version of the product. We produce local language versions of our anti-virus software, such as Japanese and Chinese, from the English language version by
adding local language functions. Localization costs, which include direct labor and overhead costs, are capitalized and amortized over the estimated life of the product in accordance with Statement of Financial Accounting Standards No. 86.
Maintenance costs are the costs related to product version updates to enable our customers to cope with newly prevailing computer viruses and bug fixing and are expensed as incurred.



During 2004, we engaged in new research and development projects in network appliances. We engaged in research and
development of new products in conjunction with our relationship with Cisco. We invested in the China Development Center. These new activities resulted in an increase to both the expense and the number of employees in research and development and
maintenance expenses.



During 2003, we engaged in collaborative
research and development activities with some alliance partners, such as Postini Corporation, an anti-spam technology vender. As a result of these activities, we paid software license fees to these alliance partners, which increased our research and
development expenses for 2003 compared with 2002.



The number
of employees at our research and development and maintenance department was 481 on December 31, 2002, 476 on December 31, 2003, and 641 on December 31, 2004.



Customer Support Expenses



Customer support expenses consist primarily of payroll, related expenses and outsourced customer service fees. Customer support expenses increased (Yen)
893 million, or 18%, in 2004 compared with 2003, and increased (Yen) 973 million, or 25%, in 2003 compared with 2002.



Compared to 2003, the number of employees in our customer support department increased by 250 in Asia Pacific. It is due to an expansion of the customer
support centers in the Philippines to meet the satisfaction of our global customers. The expansion was for enterprise products such as outbreak prevention services and damage cleanup services based on the Trend Micro Enterprise Strategy described
Item 4.B of this annual report, and the recent expansion of the services provided to customers by our customer support department.



- 40 -



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General and Administrative Expenses



General and administrative expenses consist primarily of payroll and related expenses, accounting and administration and
other general corporate expenses. General and administrative expenses increased (Yen) 488 million, or 9%, in 2004 compared with 2003, and increased (Yen) 1,312 million, or 30%, in 2003 compared with 2002.



General and administrative expenses for 2004 increased (Yen) 488 million,
compared with 2003. The number of employees at general and administrative department increased 77 in Asia Pacific, compared to 2003. The increase was mainly due to the expansion of the information service function in the Philippines. This accounts
for most of the increased number in employees in the general and administrative department from 351 at December 31, 2003 to 421 at December 31, 2004.



Other income (expenses) and Income taxes



Other income (expenses) and income taxes for the three years ended December 31, 2004 were as follows:



|                                              |  |                          |         |                          |       |         |  |       |         |  |   |         
|--------------------------------------------- |  | ------------------------ | ------- | ------------------------ | ----- | ------- |  | ----- | ------- |  | - | --------
|                                              |  | Years ended December 31,
|                                              |  | 2002                     |         | 2003                     |       | 2004    |  | 2004 
|                                              |  | Millions of yen          |         | Thousandsof U.S. dollars
|Other income (expenses):                      |  |                          |         |                          |       |         |  |       |         |  |   |         
|Interest income                               |  | (Yen)                    | 410     |                          | (Yen) | 412     |  | (Yen) | 451     |  | $ | 4,381   
|Interest expense                              |  |                          | (277)   |                          |       | (174)   |  |       | (88)    |  |   | (849)   
|Gain (Loss) on sales of marketable securities |  |                          | (259)   |                          |       | (65)    |  |       | 101     |  |   | 983     
|Impairment loss of securities investments     |  |                          | (805)   |                          |       | (7)     |  |       |        |  |   |        
|Foreign exchange gain (loss), net             |  |                          | 52      |                          |       | 120     |  |       | (183)   |  |   | (1,780) 
|Other income (expense), net                   |  |                          | 111     |                          |       | (111)   |  |       | (34)    |  |   | (334)   
|                                              |  |                          |         |                          |       |         |  |       |         |  |   |         
|Total other income (expenses)                 |  |                          | (768)   |                          |       | 175     |  |       | 247     |  |   | 2,401   
|                                              |  |                          |         |                          |       |         |  |       |         |  |   |         
|Income taxes:                                 |  |                          |         |                          |       |         |  |       |         |  |   |         
|Current                                       |  |                          | 6,938   |                          |       | 7,438   |  |       | 11,894  |  |   | 115,472 
|Deferred                                      |  |                          | (1,543) |                          |       | (1,335) |  |       | (1,391) |  |   | (13,499)
|                                              |  |                          |         |                          |       |         |  |       |         |  |   |         
|                                              |  | (Yen)                    | 5,395   |                          | (Yen) | 6,103   |  | (Yen) | 10,503  |  |   | $101,973
|                                              |  |                          |         |                          |       |         |  |       |         |  |   |         



- 41 -



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Other Income (Expenses)



Interest income in 2002, 2003 and 2004 arose mainly from our investments in bonds and cash in bank deposits.



Interest expense in 2002, 2003 and 2004 resulted mainly from our bonds with
warrants issued to provide stock options to our directors and employees. Interest expense decreased during the period, generally corresponding to the progress of the redemption of the bonds.



We recognized a gain on sales of marketable securities in 2004. The gain
primarily resulted from the redemption of the bonds, and investment trusts denominated in foreign currencies.



We recognized a loss on sales of marketable securities in 2002 and 2003. The loss primarily resulted from our sale in shares of common stock of Sina COM,
a Nasdaq-listed U.S. Internet media and services company, in 2002, and the disposition of certain of our investments in bonds in 2003.



In 2002, we recognized a loss from impairment of securities investments. The loss primarily resulted from the impairment of our investments in SOFTBANK
INTERNET FUND and in common stock of Information Security One Limited, Cayman Islands, a British West Indies provider of enterprise solutions and professional services company.



- 42 -



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Income Taxes



Our statutory tax rate was 42.1% in 2002, 2003 and 2004. Our effective tax rate was 41.2% in 2002, 39.8% in 2003 and 39.9%
in 2004. A decrease in 2003 compared with 2002 was mainly due to tax credit relating to tax law applied to parent company in 2003, which in turn lowered our effective tax rate.



Net deferred tax assets gradually increased from(Yen) 5,593 million in 2002 to (Yen) 6,701 million in 2003 and to (Yen)
7,921 million ($76,901 thousand) in 2004. The main reason this was for an increase of the portion derived from deferred revenue from (Yen) 3,299 million in 2002 to (Yen) 4,344 million in 2003 and to (Yen) 5,638 million ($ 54,737 thousand) in 2004.



Segment Information



Net sales and operating income (loss) by segment for each of the three years
ended December 31 were as follows:



|              |  |                                                                      |        |                      |      |      |       |        |  |      |  |       |        |  |      |  |      |  |     |  |    
|------------- |  | -------------------------------------------------------------------- | ------ | -------------------- | ---- | ---- | ----- | ------ |  | ---- |  | ----- | ------ |  | ---- |  | ---- |  | --- |  | ---
|              |  | Years ended December 31                                              |        | Year over YearGrowth
|              |  | 2002                                                                 |        | 2003                 |      | 2004 |       | 2003   |  | 2004
|              |  | (in millions of yen and thousands of US dollars, except percentages) |        |                      |      |     
|Net sales     |  |                                                                      |        |                      |      |      |       |        |  |      |  |       |        |  |      |  |      |  |     |  |    
|Japan         |  | (Yen)                                                                | 18,347 |                      | 43%  |      | (Yen) | 20,052 |  | 42%  |  | (Yen) | 25,443 |  | $247 |  | 41%  |  | 9%  |  | 27%
|North America |  |                                                                      | 9,216  |                      | 21%  |      |       | 9,633  |  | 20%  |  |       | 11,891 |  | 115  |  | 19%  |  | 5%  |  | 23%
|Europe        |  |                                                                      | 9,807  |                      | 23%  |      |       | 12,138 |  | 25%  |  |       | 16,418 |  | 159  |  | 27%  |  | 24% |  | 35%
|Asia Pacific  |  |                                                                      | 4,208  |                      | 10%  |      |       | 4,809  |  | 10%  |  |       | 6,305  |  | 61   |  | 10%  |  | 14% |  | 31%
|Latin America |  |                                                                      | 1,402  |                      | 3%   |      |       | 1,456  |  | 3%   |  |       | 1,992  |  | 19   |  | 3%   |  | 4 % |  | 37%
|              |  |                                                                      |        |                      |      |      |       |        |  |      |  |       |        |  |      |  |      |  |     |  |    
|              |  | (Yen)                                                                | 42,980 |                      | 100% |      | (Yen) | 48,088 |  | 100% |  | (Yen) | 62,049 |  | $601 |  | 100% |  | 12% |  | 29%
|              |  |                                                                      |        |                      |      |      |       |        |  |      |  |       |        |  |      |  |      |  |     |  |    



- 43 -



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|                        |  |                         |          |                          |       |                       |  |       |          |      |   |       |  |     |  |     
|----------------------- |  | ----------------------- | -------- | ------------------------ | ----- | --------------------- |  | ----- | -------- | ---- | - | ----- |  | --- |  | ----
|                        |  | Years ended December 31 |          | Year ended December 31,  |       | Year over Year Growth
|                        |  | 2002                    |          | 2003                     |       | 2004                  |  | 2004  |          | 2003 |   | 2004 
|                        |  | Millions of yen         |          | Thousands ofU.S. dollars |       |                       |  |      
|Operating income (loss) |  |                         |          |                          |       |                       |  |       |          |      |   |       |  |     |  |     
|Japan                   |  | (Yen)                   | 12,246   |                          | (Yen) | 12,741                |  | (Yen) | 16,600   |      | $ | 161   |  | 4%  |  | 30% 
|North America           |  |                         | 5,789    |                          |       | 6,067                 |  |       | 7,543    |      |   | 73    |  | 5%  |  | 24% 
|Europe                  |  |                         | 4,761    |                          |       | 5,606                 |  |       | 9,733    |      |   | 94    |  | 18% |  | 74% 
|Asia Pacific            |  |                         | 627      |                          |       | 858                   |  |       | 1,679    |      |   | 16    |  | 37% |  | 96% 
|Latin America           |  |                         | 664      |                          |       | 729                   |  |       | 1,282    |      |   | 12    |  | 10% |  | 76% 
|Corporate               |  |                         | (10,221) |                          |       | (10,847)              |  |       | (10,759) |      |   | (104) |  | 6%  |  | (1)%
|                        |  |                         |          |                          |       |                       |  |       |          |      |   |       |  |     |  |     
|Consolidated Total      |  | (Yen)                   | 13,866   |                          | (Yen) | 15,154                |  | (Yen) | 26,078   |      | $ | 252   |  | 9%  |  | 72% 
|                        |  |                         |          |                          |       |                       |  |       |          |      |   |       |  |     |  |     



As stated above, in
our operations, the operating expenses tend to be substantially larger than cost of sales, and the operating income is affected more by changes in operating expenses than by those in cost of sales. This is also the case for each of our segments.



- 44 -



---

Japan



Net sales in 2004 increased 27% compared with 2003, and net sales in 2003 increased 9% compared with 2002. Strong demand for Virus Buster
series products including Virus Buster 2005 released in the fourth quarter contributed to a significant increase in sales growth in year 2004. This result came from an increasing number of broadband users, a high level of experienced
virus damages and continuous improving and expanded support from the Company. Additionally, in response to the enactment of the Personal Information Protection Act in Japan, which is to be fully enforced starting April 2005, the sales from corporate
anti-virus products were also strong. The smaller growth rate in net sales in year 2003 from 2002 was mainly due to stronger sales in 2002 and declining demand in 2003 reflecting the slowdown of IT-related spending in the enterprise market in the
second half of 2003.



The growth rate of operating income was
higher than that of net sales in 2004. Cost of sales decreased by approximately (Yen) 89 million from (Yen) 927 million in 2003 to (Yen) 838 million ($8,140 thousand) in 2004. The operating expenses for year 2004 and 2003, which were 34.8% and
36.5%, respectively, of net sales for those years.



North America



Net sales in 2004 increased 23% compared with 2003 and net sales in 2003 increased 5%
compared with 2002. The increase in sales growth for year 2004 is as a result of the positive attitude of our customers towards investment of security products as well as the reinforcement measures we took to expand sales channels for small and
medium companies. The major increase contributed primarily from Neat Suite, PC-cillin, Client Server Messaging, Scan Mail product groups and the premium support services, which provide proactive, personalized service, combining round-the-clock
urgent priority handling of service requests with leading edge anti-virus, content security, and technical expertise to quickly address issues and deliver product knowledge at each service level.



In 2003, revenues in this segment recovered due to the increase in sales of
our anti-spam solution service and related products and the expansion of our customer base.



The growth rate of operating income in 2004 was almost the same as that of net sales in 2004. Cost of sales increased by approximately (Yen) 181 million from (Yen) 173 million in 2003 to (Yen) 354 million ($3,437
thousand) in 2004. One of the reasons for this increase was an increase in outsourcing costs which is due to increasing transaction volume. The cost of sales for year 2004 and 2003 were 3.0% and 1.8%, respectively. Operating expenses for year 2004
and 2003, which were 36.6% and 37.0%, respectively, of net sales for those years, mainly increased by approximately (Yen) 782 million from extended sales force and activities in line with sales growth.



- 45 -



---

Europe



Net sales in 2004 increased 35% compared with 2003, and net sales in 2003 increased 24% compared with 2002. With new product launches, stronger demand and
targeting sales in the small and medium business market has had great impact on our sales increase in year 2004. Sales in the Northern European areas such as Norway and Sweden and the Southern European areas such as Italy significantly increased due
to the positive impact of reorganization of the sales teams and management within the business units. The increase in 2003 was due to the expansion of our customer base to small and medium-sized businesses and the growth in some emerging countries
included in this segment, such as Norway and Spain, as well as the strength of the Euro relative to the Japanese Yen.



The growth rate of operating income was higher than that of net sales in 2004. Cost of sales increased by approximately (Yen) 190 million from (Yen) 40
million in 2003 to (Yen) 230 million ($2,229 thousand) in 2004; mainly due to an increase in transaction volume related to small and medium size business products. But cost of sales for year 2004 and 2003 were 1.4% and 0.3%, respectively, of net
sales for those years. Operating expenses were increased by approximately (Yen) 153 million from 2003 mainly from sales and support efforts to grow the business. However, operating expenses for 2004 and 2003, were 40.7% and 53.8%, respectively, of
net sales for those years. The decreased ratio was due to improved sales productivity by changed compensation incentive structure and improved operation productivity and efficiency by centralized operation process in Ireland Shared Service Center
that was implemented in 2003 and began operating efficiently in 2004.



Asia
Pacific



Net sales in 2004 increased 31% compared with 2003,
and net sales in 2003 increased 14% compared with 2002. The continuous growth of our net sales in the territories of South Asia and Southeast Asia countries, Australia and China contributed to the growth in this segments net sales from 2003 to
2004 as well as from 2002 to 2003. The major increase contributed primarily from Neat Suite, Gateway products, PC-cillin, and the premium support services.



The growth rate of operating income was higher than that of net sales in 2004. Cost of sales increased by approximately (Yen) 233 million from (Yen) 796
million in 2003 to (Yen) 1,029 million ($9,992 thousand) in 2004, mainly due to an increase in hardware-related product sales. Cost of sales for 2004 and 2003 were 16.3% and 16.5%, respectively, of net sales for those years. Operating expenses for
2004 and 2003, which were 73.4% and 82.2%, respectively, of net sales for those years, increased by approximately (Yen) 675 million from 2003 to 2004 mainly due to our sales and support activities designed to increase demand for our products in the
market.



- 46 -



---

Latin America



Net sales in 2004 increased 37% compared with 2003, and net sales in 2003 increased 4% compared with 2002. The increase in the growth rate primarily came
from the introduction of new products or new versions such as Spam Prevention Service, Network VirusWall, and products focusing on small and medium sized business in 2004. Net sales in 2003 did not increase as much as it did in 2002 mainly due to
the relative strength of the Japanese yen relative to the local currencies related to this segment.



The growth rate of operating income was higher than that of net sales in 2004. Cost of sales increased by approximately (Yen) 60 million, from (Yen) 13
million in 2003 to (Yen) 73 million ($708 thousand) in 2004, mainly due to an increase in costs related to selling of network related hardware products. Cost of sales for year 2004 and 2003 were 3.7% and 0.9%, respectively, of net sales for those
years. Operating expenses for year 2004 and 2003, which were 35.6% and 49.9%, respectively, of net sales for those years, decreased by approximately (Yen) 17 million. The decreased ratio is due to the reduction of statutory profit sharing cost from
legal restructuring of the company and the reduction in the number of remote offices.



Corporate



Operating loss of the Corporate segment in
2004 decreased 1% compared with 2003. Such decreased expenses included those related to our corporate marketing department which decreased by approximately (Yen) 603 million, those related to our corporate general and administrative department,
which decreased by approximately (Yen) 106 million, and our amortization of software development cost which decreased by approximately (Yen) 507 million. However, there was increase in expenses related to our research and development department of
approximately (Yen) 939 million derived mainly from our research and development projects in network appliances, our research and development of new products in conjunction with our relationship with Cisco and investment in the China Development
Center.



Operating loss of the Corporate segment in 2003
increased 6% compared with 2002. The primary reason for this increase was the increase in expenses except for those related to our corporate marketing department. Such increased expenses included those related to our research and development
department, which increased by approximately (Yen) 413 million, those related to our corporate general and administrative department, which increased by approximately (Yen) 163 million, and amortization of software development costs, which increased
by approximately (Yen) 310 million. The decrease in expenses related to our corporate marketing department, by approximately (Yen) 748 million, was mainly due to the reduction in marketing personnel in our corporate marketing department and our
policy change to attribute more marketing related resources under each regional segment than under the corporate segment, to increase efficiency. The increase in expenses related to our research and development department was mainly due to the
increase in maintenance costs of approximately (Yen) 388 million, which were derived mainly from our research and development projects for our personal computer products in Japan and those for our internet-based products in Germany.



- 47 -



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Stock Options



In March, June and November 2001 and April 2002, we granted warrants to attract and retain key employees. Also, in March 2001, options were granted under
an incentive stock option plan with subscription rights which qualified under Article 280-19 of the unrevised Japanese Commercial Code. In addition, in February, May and November 2003, and in April, October 2004, the stock options with stock
acquisition rights were granted. The warrants granted in 2001 and the stock option with subscription rights granted in 2001 generally commenced vesting one year after the grant date. The warrants granted in 2002 generally commenced vesting one year
after the grant date. The stock options with stock acquisition rights granted in 2003 and 2004 generally commenced or will generally commence vesting 9 months or one year after the grant date. Using methodology under Accounting Principles Board
Opinion No. 25, we have not recorded any non-cash compensation expense for the years ended December 31, 2002, 2003 and 2004. Had such non-cash compensation expense for our warrants and stock options in 2001, 2002, 2003 and 2004 been determined based
on the fair value of such warrants or options at the grant dates, as prescribed by Statement of Financial Accounting Standards No. 123, our pro forma net income and net income per share would have been as follows:



|                                |  |                                                                              |       |      |       |       |  |       |        |  |   |        
|------------------------------- |  | ---------------------------------------------------------------------------- | ----- | ---- | ----- | ----- |  | ----- | ------ |  | - | -------
|                                |  | Years ended December 31,                                                    
|                                |  | 2002                                                                         |       | 2003 |       | 2004  |  | 2004 
|                                |  | (In millions of yen and in thousands of U.S. dollars, except per share data)
|Pro forma net income            |  | (Yen)                                                                        | 6,853 |      | (Yen) | 7,899 |  | (Yen) | 13,235 |  | $ | 128,494
|Pro forma net income per share: |  |                                                                              |       |      |       |       |  |       |        |  |   |        
|Basic                           |  | (Yen)                                                                        | 51.87 |      | (Yen) | 59.87 |  | (Yen) | 100.58 |  | $ | 0.98   
|Diluted                         |  |                                                                              | 51.72 |      |       | 59.73 |  |       | 98.87  |  |   | 0.96   



These figures are
significantly different than those determined under Accounting Principles Board Opinion No.25. Those differences result mainly from the current price of the shares and their expected volatility. The impact of the pro forma value of the warrants or
options computed under Statement of Financial Accounting Standards No. 123 has not affected our reported earnings or cash flows. The impact has been measured for disclosure purposes only and is entirely non-cash in nature. See Significant
accounting policies and note 14 to the financial statements in included in this annual report.



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Employee Benefit plans



The parent company has an unfunded retirement allowance plan covering substantially all of its employees who meet eligibility requirements under such plan, and some
subsidiaries have defined benefit / defined contribution pension plans. All of the details are described more fully in Note 14: Employee benefit plans. The Companys total cost for defined benefit pension plan is (Yen) 237 million
in 2004, and the aggregated balance at December 31, 2004 of the Companys projected benefit obligation and plan assets are, (Yen) 910 million and (Yen) 125 million, respectively. We believe our risk exposure to variation from estimates made for
these plans is immaterial.



In December 2004, the Financial Accounting
Standards Board revised Statement of Financial Accounting Standards (SFAS) No.123 Share-Based Payment This new SFAS No.123 focuses primarily on accounting for transactions in which an entity obtains employee services in
share-based payment transactions. This Statement is effective as of the beginning of the first fiscal year that starts after June 15, 2005. We intend to adopt the provisions on Financial Accounting Standards 123(R) effective January 1, 2006. The
Company is currently evaluating which transition method and valuation technique to be used upon adoption. The Companys pro forma net income and net income per share for the year ended December 31, 2004 based on the fair values of the stock
options with Stock acquisition rights, which were estimated on the date of grant using the Black-Scholes option pricing model in accordance with the original SFAS No.123, are disclosed in Note 2 (1) Significant accounting policies -
Stock-based compensation.



- 49 -



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B. Liquidity and Capital Resources.



Our short-term capital requirements depend on numerous factors, including



| |  | market acceptance of our products,
|- |  | ----------------------------------



| |  | the resources we devote to developing, marketing, selling and supporting our products, and
|- |  | ------------------------------------------------------------------------------------------



| |  | the extent to which we are able to establish relationships with strategic partners in the U.S., Europe and elsewhere.
|- |  | ---------------------------------------------------------------------------------------------------------------------



Our short-term capital resources are mainly derived from net cash provided by
operating activities. We believe that our current cash balance, net cash provided by operating activities and existing credit facilities will be sufficient to meet our working capital and capital expenditure requirements for the next 12 months.



In the medium and long terms, we may make acquisitions and
strategic investments in order to grow our business. Insofar as we are not able to satisfy our working capital and capital expenditure requirements, we may seek to raise additional capital through equity or debt financing. However, we cannot be
certain that such funding will be available on commercially reasonable terms, if at all.



At December 31, 2004, we had cash and cash equivalents, time deposits and marketable securities of approximately (Yen) 68,580 million ($665,827 thousand), up from approximately (Yen) 51,929 million at December 31,
2003. The increase was primarily due to cash inflow from operating activities. Our marketable securities consist only of debt securities with high credit ratings and mutual funds which consist of debt securities with high credit ratings in
accordance with our investment policy. At December 31, 2004, we had cash and cash equivalents of approximately (Yen) 52,908 million ($513,673 thousand), which mainly consisted of (Yen) 33,476 million ($325,011 thousand) in Japanese yen, (Yen) 4,022
million ($39,052 thousand) in U.S. dollar and (Yen) 10,905 million ($105,872 thousand) in Euro. At December 31, 2003, we had cash and cash equivalents of approximately (Yen) 46,719 million, which mainly consisted of (Yen) 27,899 million in Japanese
yen, (Yen) 8,824 million in U.S. dollars and (Yen) 7,085 million in Euro.



Previously, the Company has disclosed all of available for sale debt securities as Marketable securities in current assets. However, since the balance of cash and cash equivalents has increased, in fiscal
2004, the possibility of sales before maturity of available for sale debt securities classified into working capital has decreased. Therefore, from fiscal 2004, the Company discloses available for sale debt securities with
maturities later than one year as Securities investments in investments and other assets. The balance sheet as of December 31, 2003 has been reclassified on a consistent basis. As a result, available for sale debt securities of (Yen)
5,483,094 thousand is reclassified from current assets to investments and other assets. In addition, related deferred taxes of (Yen) 2,522 thousand have been reclassified from current liabilities to long-term liabilities.



- 50 -



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At December 31, 2004, we had deferred revenue under both current liabilities and long-term liabilities of
approximately (Yen) 27,904 million ($270,908 thousand), compared with approximately (Yen) 20,503 million at December 31, 2003. Deferred revenue as of each fiscal year end is expected to become net sales in accordance with contractual period in the
future. Deferred revenue was derived from each region as shown in the following table:



|                   |  |                 |        |                           |       |        |  |   |        
|------------------ |  | --------------- | ------ | ------------------------- | ----- | ------ |  | - | -------
|                   |  | December 31,    |        | December 31,             
|                   |  | 2003            |        | 2004                      |       | 2004  
|                   |  | Millions of yen |        | Thousands of U.S. dollars
|Deferred Revenue   |  |                 |        |                           |       |        |  |   |        
|Japan              |  | (Yen)           | 9,321  |                           | (Yen) | 12,369 |  | $ | 120,085
|North America      |  |                 | 4,073  |                           |       | 5,597  |  |   | 54,341 
|Europe             |  |                 | 5,416  |                           |       | 7,469  |  |   | 72,511 
|Asia Pacific       |  |                 | 1,368  |                           |       | 1,968  |  |   | 19,111 
|Latin America      |  |                 | 325    |                           |       | 501    |  |   | 4,861  
|                   |  |                 |        |                           |       |        |  |   |        
|Consolidated Total |  | (Yen)           | 20,503 |                           | (Yen) | 27,904 |  | $ | 270,909
|                   |  |                 |        |                           |       |        |  |   |        



Most of deferred
revenue at December 31, 2003 and 2004 was attributable to Japan, North America and Europe. Deferred revenue in Japan at December 31, 2004 increased 33% compared with December 31, 2003 due mainly to increased net sales as a result of an increase in
the number of broadband users, a high level of experience with virus damages and continuously improving and expanded support from the Company. Deferred revenue in North America at December 31, 2004 increased 37% compared with December 31, 2003 due
mainly to increased net sales as a result of the positive attitude of our customers towards investment in security products as well as the measures we took to reinforce sales channels to expand sales to small and medium companies. Deferred revenue
in Europe at December 31, 2004 increased 38% compared with December 31, 2003 due mainly to increased net sales as a result of new product launches, stronger demand and targeting sales in the small and medium business market.



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Net cash provided by operating activities was approximately (Yen) 15,666 million in 2003 and (Yen) 24,900
million ($,241,747 thousand) in 2004. The increase from 2003 to 2004 was primarily due to an increase of net income and the stronger increase in deferred revenue.



Net cash used in investing activities was approximately (Yen) 9,453 million in 2003 and approximately (Yen) 16,030 million
($155,626 thousand) in 2004. The increase from 2003 to 2004 was primarily due to a (Yen) 6,991 million ($67,876 thousand) increase in payments for purchases of marketable securities and security investments and the payment of (Yen) 2,156 million
($20,934 thousand) for purchases of marketable securities with maturities of three months or less. These increases in payments ware partially offset by a (Yen) 2,041 million ($19,812 thousand) increase in proceeds from sales of marketable
securities.



Net cash used by financing activities was
approximately (Yen) 6,811 million in 2003 approximately (Yen) 3,250 million ($31,554 thousand) in 2004. The decrease from 2003 to 2004 was primarily due to a (Yen) 7,771 million ($75,447 thousand) increase in the issuance of common stock pursuant to
the exercise of stock warrants and stock acquisition rights. This increase in proceeds was partially offset by the payment of (Yen) 1,820 million ($17,666 thousand) dividends and a (Yen) 1,500 million ($14,563 thousand) increase in redemption of
bonds.



Net cash provided by operating activities was
approximately (Yen) 14,743 million in 2002 and (Yen) 15,666 million in 2003. The increase from 2002 to 2003 was primarily due to an increase of net income. The increase in net income was primarily offset by the negative effect of the slow-down of
the increase in deferred revenue. The increase of deferred revenue mainly related to increased net sales, especially as the result of renewals by end users of post-contract customer support services after the expiration of initial periods.



Net cash used in investing activities was approximately (Yen)
3,173 million in 2002 and approximately (Yen) 9,453 million in 2003. The increase from 2002 to 2003 was primarily due to a (Yen) 8,922 million increase in payments for purchases of marketable securities and investments in securities. This increase
was partially offset by a (Yen) 2,653 million increase in proceeds from sales of marketable securities.



Net cash used by financing activities was approximately (Yen) 4,007 million in 2002 and approximately (Yen) 6,811 million in 2003. The increase from 2002
to 2003 was primarily due to a (Yen) 2,000 million increase in redemption of bonds and a (Yen) 564 million decrease in the issuance of common stock pursuant to the exercise of stock warrants and stock acquisition rights.



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At the fifteenth ordinary general meeting of our shareholders held on March 25, 2004, a dividend of (Yen)
14.00 ($0.13) per share was approved. Based on the number of shares outstanding as of December 31, 2003, the record date for the dividend, the maximum cash dividend amount we will pay is (Yen) 1,829 million.



At the sixteenth ordinary general meeting of our shareholders held on March
25, 2005, a dividend of (Yen) 36.00 ($0.35) per share was approved. Based on the number of shares outstanding as of December 31, 2004, the record date for the dividend, the maximum cash dividend amount we will pay is (Yen) 4,794 million.



We issued (Yen) 5,000 million worth of unsecured bonds due June 2003 with
detachable warrants in connection with our 2000 incentive plan in June 2000. The bonds bear interest at the annual rate of 2.1%. Of the (Yen) 5,000 million worth of unsecured bonds, (Yen) 5,000 million ($46,729 thousand) were redeemed in 2003.



We issued (Yen) 5,000 million worth of unsecured bonds due
March 2004 with detachable warrants in connection with our 2001 incentive plan in March 2001. The bonds bear interest at the annual rate of 1.75%. These bonds were redeemed in March 2004.



We issued (Yen) 1,500 million worth of unsecured bonds due June 2004 with detachable warrants in connection with our 2001
incentive plan in June 2001. The bonds bear interest at the annual rate of 1.5%. These bonds were redeemed in June 2004.



We issued (Yen) 6,000 million worth of unsecured bonds due November 2004 with detachable warrants in connection with our 2001 incentive plan in November
2001. The bonds bear interest at the annual rate of 1.75%. (Yen) 6,000 million worth of unsecured bonds issued in November 2001 was repurchased in December 2001. These bonds were redeemed in November 2004.



We issued (Yen) 4,000 million worth of unsecured bonds due April 2006 with
detachable warrants in connection with our 2002 incentive plan in April 2002. The bonds bear interest at the annual rate of 1.90%. (Yen) 4,000 million worth of unsecured bonds issued in April 2002 were repurchased in May 2002.



We have invested the proceeds of the bonds in cash and other short-term
investments. Since these investments are likely to yield less interest income than the interest expense on the bonds, we will incur a net interest expense with respect to the bonds.



In order to reduce interest cost, we repurchased some of the bonds in the market with the intention to hold the treasury
bonds until they can be extinguished legally. As the repurchase transaction is deemed as redemption of the bonds in substance, the treasury bonds are offset with the bonds on the face of our consolidated balance sheet. We used the proceeds of the
bond issuance for working capital and general corporate purposes.



In 1998, we entered into three overdraft agreements with Japanese commercial banks, under which we are able to obtain short-term financing at prevailing interest rates for periods not in excess of one year. One of the three overdraft
agreements was terminated in 2002. The aggregate amount available under the remaining two overdraft agreements is (Yen) 700 million ($6,796 thousand) as of December 31, 2004. However, at December 31, 2004, no amounts were outstanding under these
overdraft agreements. All of these overdraft agreements have been cancelled as of February 28, 2005.



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C. Research and Development, Patents and Licenses, etc.



RESEARCH AND PRODUCT DEVELOPMENT



Our research and product development activities focus on the development of
new anti-virus and security software, enhancements to existing products and integration of products to enable monitoring, updating and management via the Internet. We conduct research and development at our Tokyo headquarters and our U.S., Taiwan,
Germany, U.K., and China subsidiaries and have a research staff of 641 engineers as of December 31, 2004.



Research and development and maintenance expenditures, consisting primarily of software development costs and research and development staff salaries and
benefits, increased from (Yen) 3,505.6 million in 2002 to (Yen) 3,919.0 million in 2003 and to (Yen) 4, 858.3 million ($47.2 million) in 2004.



INTELLECTUAL PROPERTY



Our ability to compete successfully depends in part on our ability to protect the proprietary technology contained in our software products. We rely upon
a combination of patent, trademark, copyright and trade secret laws and contractual provisions to establish and protect proprietary rights in our software.



- 54 -



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Our U.S. and Taiwanese subsidiaries hold the following principal patents relating to core technologies:



|                                                                                              |  |          |  |                  |  |                     |  |                |  |                                  
|--------------------------------------------------------------------------------------------- |  | -------- |  | ---------------- |  | ------------------- |  | -------------- |  | ---------------------------------
|NAME                                                                                          |  | STATUS   |  | REGISTRATIONDATE |  | REGISTRATION NUMBER |  | EXPIRATIONDATE |  | APPLICANT/PATANTEE               
|Method and apparatus for controlling network and workstation access prior to workstation boot |  | Patented |  | 8/22/1995        |  | 5,444,850           |  | 8/3/2013       |  | Trend Micro Inc. (USA)           
|                                                                                              |  |          |  |                  | 
|Virus detection and removal apparatus for computer networks                                   |  | Patented |  | 4/22/1997        |  | 5,623,600           |  | 9/25/2015      |  | Trend Micro Inc. (USA)           
|                                                                                              |  |          |  |                  | 
|Method and apparatus for controlling network and workstation access prior to workstation boot |  | Patented |  | 10/21/1997       |  | 5,680,547           |  | 8/7/2015       |  | Trend Micro Incorporated (Taiwan)
|                                                                                              |  |          |  |                  | 
|Apparatus and method for electronic mail virus detection and elimination                      |  | Patented |  | 3/30/1999        |  | 5,889,943           |  | 3/28/2016      |  | Trend Micro Incorporated (Taiwan)
|                                                                                              |  |          |  |                  | 
|System, apparatus and method for the detection and removal of viruses in macros               |  | Patented |  | 9/14/1999        |  | 5,951,698           |  | 10/1/2016      |  | Trend Micro Incorporated (Taiwan)
|                                                                                              |  |          |  |                  | 
|Event triggered iterative virus detection                                                     |  | Patented |  | 9/28/1999        |  | 5,960,170           |  | 3/17/2017      |  | Trend Micro Incorporated (Taiwan)
|                                                                                              |  |          |  |                  | 
|Computer network malicious code scanner                                                       |  | Patented |  | 11/9/1999        |  | 5,983,348           |  | 9/9/2017       |  | Trend Micro Inc. (USA)           
|                                                                                              |  |          |  |                  | 
|Controlled distribution of application programs in a computer network                         |  | Patented |  | 9/12/2000        |  | 6,119,165           |  | 11/16/2017     |  | Trend Micro Inc. (USA)           
|                                                                                              |  |          |  |                  | 
|Computer network malicious code scanner method and apparatus                                  |  | Patented |  | 8/7/2001         |  | 6,272,641           |  | 11/8/2019      |  | Trend Micro Inc. (USA)           
|                                                                                              |  |          |  |                  | 
|Distributed virus scanning arrangements and methods therefore                                 |  | Patented |  | 4/27/2004        |  | 6,728,886           |  | 11/30/2019     |  | Trend Micro Inc. (USA)           
|                                                                                              |  |          |  |                  | 
|Techniques for providing add-on services for an email system                                  |  | Patented |  | 12/28/04         |  | 6,836,792           |  | 12/2/2019      |  | Trend Micro Inc. (USA)           



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We plan to transfer the ownership of these patents to Trend Micro (Japan).



We do not typically enter into signed license agreements with our corporate,
government and institutional customers who license products directly from us. We include an electronic version of a shrinkwrap license in all of our electronically distributed software and a printed license in the box for our packaged
products in order to protect our copyrights in those products. The enforceability of these licenses generally is uncertain in the United States as well as in foreign jurisdictions. In addition, the laws of some foreign countries either do not
protect proprietary rights or offer only limited protection for those rights.



In addition, as is common in the software industry, third parties may sue us for alleged infringement of their intellectual property rights. We may also have to take legal action to defend our intellectual property
from infringement.



We also generally enter into
confidentiality agreements with our employees, and limit access to and distribution of proprietary information.



D. Trend Information.



The information required by this Item is set forth in Item 5.A of this annual report.



E. Off-Balance Sheet Arrangements.



We are not a party to any material off-balance sheet arrangements. In addition, we have no unconsolidated special purpose financing or partnership
entities that are likely to create material contingent obligations.



- 56 -



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F. Tabular Disclosure of Contractual Obligations.



Future payments due under our debt and lease obligations as of December 31, 2004 were as follows:



|                  |  |                                               |   |                                 |       |       |  |                 |       |  |   |       
|----------------- |  | --------------------------------------------- | - | ------------------------------- | ----- | ----- |  | --------------- | ----- |  | - | ------
|                  |  | Long-term debt                                |   | Non-cancelable operating leases |       | Total |  | Total in U.S. $
|                  |  | (in millions of yen and thousands of dollars)
|Less than 1 year  |  | (Yen)                                         |  |                                 | (Yen) | 575   |  | (Yen)           | 575   |  | $ | 5,584 
|1-3 years         |  |                                               |  |                                 |       | 539   |  |                 | 539   |  |   | 5,232 
|3-5 years         |  |                                               |  |                                 |       | 244   |  |                 | 244   |  |   | 2,366 
|More than 5 years |  |                                               |  |                                 |       |      |  |                 |      |  |   |      
|                  |  |                                               |   |                                 |       |       |  |                 |       |  |   |       
|Total             |  | (Yen)                                         |  |                                 | (Yen) | 1,358 |  | (Yen)           | 1,358 |  | $ | 13,182
|                  |  |                                               |   |                                 |       |       |  |                 |       |  |   |       



As of December 31,
2004, we had no capital lease obligations, purchase obligations, or long-term liabilities reflected in our financial statements included in this annual report other than those set forth in the table above.



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Item 6. Directors, Senior Management and Employees



A. Directors and Senior Management.



The following table shows information regarding our directors and executive officers as of April 30, 2005.



|                   |  |     |  |                                                                               |  |                                              |  |                                             |  |                                  |  
|------------------ |  | --- |  | ----------------------------------------------------------------------------- |  | -------------------------------------------- |  | ------------------------------------------- |  | -------------------------------- | -
|Name               |  | Age |  | Position(s)                                                                   |  | Month and year in which Current Term Expires |  | Number of Shares owned as of April 30, 2005 |  | Percent ofnumber ofShares issued |  
|Steve Chang        |  | 50  |  | Representative Director and Chairman of the Board                             |  | March 2007                                   |  | 5,368,000                                   |  | 4.0                              | %
|Eva Chen           |  | 46  |  | Representative Director; President and Chief Executive Officer                |  | March 2007                                   |  | 2,504,500                                   |  | 1.8                              | %
|Mahendra Negi      |  | 45  |  | Representative Director, Chief Financial Officer and Executive Vice President |  | March 2007                                   |  | 32,000                                      |  | 0.0                              | %
|Hirotaka Takeuchi  |  | 58  |  | Director                                                                      |  | March 2007                                   |  | 0                                           |  |                                 |  
|Fumio Hasegawa     |  | 65  |  | Corporate Auditor                                                             |  | March 2009                                   |  | 500                                         |  | 0.0                              | %
|Sadatoshi Nakayama |  | 53  |  | Corporate Auditor                                                             |  | March 2009                                   |  | 0                                           |  |                                 |  
|Yasuo Kameoka      |  | 49  |  | Corporate Auditor                                                             |  | March 2009                                   |  | 0                                           |  |                                 |  
|Kouji Fujita       |  | 42  |  | Corporate Auditor                                                             |  | March 2009                                   |  | 0                                           |  |                                 |  



Steve Chang is the
founder and Chairman of Trend Micro. He has been serving as our Representative Director since December 1995. Chang formed Trend Micro in California in 1988, with the goal of developing anti-virus software for personal computers. Prior to launching
Trend Micro, Chang worked as an engineer at Hewlett Packard and later founded AsiaTek, Inc., a Taiwan-based UNIX software design company. Steve Chang received his B.S. in Applied Mathematics from Fu-Jen Catholic University in Taiwan and his M.S. in
Computer Science from Lehigh University, Pennsylvania in 1978. He is also currently serving as a director of SOFT TREND CAPITAL Corporation.



Eva Chen is one of the co-founders of Trend Micro and has been the Chief Executive Officer since January 1, 2005. She is currently Executive Vice
President and a Director and has been our Chief Technology Officer since May 1988 and Director since August 1997. She graduated from Texas University in 1988. She is also Steve Changs sister-in-law.



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Mahendra Negi is the Chief Financial Officer and a Representative Director of Trend Micro. He has been
serving as a Representative Director since March 2002. He joined Trend Micro in May 2000 from Merrill Lynch. Negi started his career in the petroleum industry, and then moved to commercial banking before joining Merrill Lynch. He graduated from
Nagpur University in India in addition to his MSc (Master of Science) in Management from the London Business School in 1993.



Dr. Hirotaka Takeuchi is Dean of the Graduate School of International Corporate Strategy, Hitotsubashi University. He has been serving as our Outside
Director since March 2005. He became an assistant professor at the Graduate School of Business Administration at Harvard University before returning to Japan in 1983 as an assistant professor at Hitotsubashi Universitys School of Commerce,
where he later became professor in 1987. He has held his present position at the Graduate School of International Corporate Strategy since 1998. He went on to receive an MBA in 1971 and a Ph.D. in 1977 from the Graduate School of Business
Administration at the University of California, Berkeley. He is also currently serving as an outside director of ORIX Corporation.



Fumio Hasegawa graduated from Chuo University with a degree from the commercial science department in 1967. He has worked for Shell Oil and Tokyo Shell
Pack. He became one of our Corporate Auditors in March 2000.



Sadatoshi Nakayama graduated from Kyoto Universitys Department of Science in 1977. He has worked for the Chuo Audit Corporation (now ChuoAoyama PricewaterhouseCoopers) and established Sadatoshi Nakayama CPA Office in 1992. He is
currently the head of Sadatoshi Nakayama CPA Office and became one of our Corporate Auditors in March 2001.



Yasuo Kameoka graduated from Sohka Universitys Department of Economics in 1978. He joined PriceWaterhouse in 1978 and Tokuichi Hayashi CPA Office in
1988. Currently he is a Chief Director and Senior Partner of Taiko Audit Corporation. He became one of our Corporate Auditors in March 2001.



Kouji Fujita graduated from Hitotsubashi Universitys Department of Juristic Law in 1987. He was admitted to the Japanese Bar, joined Okuno &
Partners legal office in April 1989. He became one of our Corporate Auditors in March 2002. He is also currently serving as a corporate auditor of TOEI Housing Corporation.



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B. Compensation.



For the fiscal year ended December 31, 2004, the aggregate compensation of all directors and executive officers paid or accrued by Trend Micro was 106
million yen ($1,038 thousand), 89 million yen ($872 thousand) for directors and 17 million yen ($165 thousand) for corporate auditors. Under the Japanese Commercial Code and local practice, we may make severance payments to a retired director or
corporate auditor with shareholder approval when our management proposes such payments based on a resolution of our Board of Directors. We have an internal formula to determine the amounts of severance payments to corporate auditors when we make
such a proposal for corporate auditors. We have not recorded any liabilities relating to severance payments to directors and corporate auditors as of December 31, 2000, 2001, 2002, 2003 and 2004 because we have no liabilities to directors, and
related liabilities to corporate auditors were insignificant.



Information regarding stock options granted to our directors and executive officers is provided in Item 6.E.



C. Board Practices.



Directors are elected at a general meeting of shareholders, and the normal term of office of a director is two years, although they may serve any number
of consecutive terms. We do not have audit or remuneration committees, a standard practice in Japan. We do not have any service contracts with any of our directors providing for benefits upon termination of employment.



In accordance with the requirements of the Commercial Code and Law for
Special Exceptions to the Commercial Code concerning Audit, etc. of Japan, our Articles of Incorporation provide for not less than three corporate auditors. Corporate auditors, of whom at least one must be from outside of the company, are elected at
a general meeting of shareholders, and the normal term of office of a corporate auditor is four years, although they may serve any number of consecutive terms. Corporate auditors are under a statutory duty to oversee the administration of our
affairs by the directors, to examine our financial statements and business reports to be submitted by the Board of Directors to the general meetings of shareholders and to report their opinions thereon to the shareholders, and to oversee accounting
firms which audit our financial statements. They are required to attend meetings of the Board of Directors and to express their opinions if necessary, but they are not entitled to vote. Corporate auditors also have a statutory duty to provide their
report on the audit report prepared by our independent certified public accountants to the board of corporate auditors, which must submit its audit report to the Board of Directors. The board of corporate auditors will also determine matters
relating to the duties of the corporate auditors, such as audit policy and methods of investigation of our affairs.



Nasdaq Marketplace Rule 4350(a)(1) provides that a foreign private issuer may follow its home country practice in lieu of the requirements of Rule 4350,
provided that such foreign private issuer discloses in its annual reports filed with the Securities and Exchange Commission each requirement of Rule 4350 that it does not follow and describes the home country practice followed by the issuer in lieu
of such requirements.



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Nasdaq Marketplace Rule 4350-1(c), currently applicable to foreign private issuers, provides that there
be independent directors as defined in Rule 4200-1(a)(14) on the board of directors. Currently, for a foreign private issuer, Nasdaq requires that there be two independent directors. Effective July 31, 2005, Nasdaq Marketplace Rule 4350(c) will
require that (i) a majority of the board of directors be independent directors as defined in Rule 4200(a)(15), (ii) independent directors have regularly scheduled meetings at which only they are present, (iii) compensation of the chief executive
officer and other executive officers be determined, or recommended to the board of directors for determination, either by a majority of the independent directors or by a compensation committee comprised solely of independent directors, and (iv)
director nominees be selected, or recommended for selection by the board of directors, either by a majority of the independent directors or by a nominations committee comprised solely of independent directors, in accordance with the nominations
process set forth in a formal written charter or board resolution. For large Japanese companies under the Commercial Code and Law for Special Exceptions to the Commercial Code concerning Audit, etc. of Japan ( Large Japanese Companies),
including us, which employ a corporate governance system based on a board of corporate auditors, Japans company law (including the Commercial Code and the Law for Special Exceptions to the Commercial Code concerning Audit, etc.) has no
independence requirement with respect to directors. As discussed above, the task of overseeing management and accounting firms is assigned to the corporate auditors, who are separate and independent from the companys management. Large Japanese
Companies, including us, are required to have at least one outside corporate auditor who must meet additional independence requirements under the Law for Special Exceptions to the Commercial Code concerning Audit, etc. An outside
corporate auditor is defined in the Law for Special Exceptions to the Commercial Code concerning Audit, etc. as a corporate auditor who had not served as a director, manager or any other employee of the company or any of its subsidiaries for the
last five years prior to the appointment. Currently, we have four outside corporate auditors. Starting on the date of our ordinary meeting of shareholders relating to the fiscal year ending December 31, 2005, by amendment of the Law for Special
Exceptions to the Commercial Code concerning Audit etc., at least 50% of our corporate auditors will be required to be outside corporate auditors. Also, starting on the same date, the independence requirements for outside corporate auditors will be
strengthened by extending the five-year period referred to above to any time prior to the appointment.



Nasdaq Marketplace Rule 4350-1(d), currently applicable to foreign private issuers, provides that there be an audit committee of the board of directors.
Currently, for a foreign private issuer, Nasdaq requires that a majority of the audit committees members be independent directors as defined in Rule 4200-1(a)(14). Effective July 31, 2005, Nasdaq Marketplace Rule 4350(d) will require that (i)
each issuer have adopted a formal written audit committee charter meeting the requirements of Rule 4350(d)(1) and (ii) the issuer have an audit committee of at least three members who are independent as defined under Rule 4200(a)(15), meet the
independence criteria set forth in Rule 10A-3(b)(1) under the U.S. Securities Exchange Act of 1934 and satisfy certain other criteria. Like a majority of Japanese companies, we employ the corporate auditor system as described above. Under this
system, the board of corporate auditors is a legally separate and independent body from the board of directors. The function of the board of corporate auditors is similar to that of independent directors, including those who are members of the audit
committee, of a U.S. company: to monitor the performance of the directors, and review and express an opinion on the method of auditing by the companys accounting firm and on such accounting firms audit reports, for the protection of the
companys shareholders. Large Japanese Companies, including us, are required to have at least three corporate auditors. Currently, we have four corporate auditors. In addition, as discussed above, our corporate auditors serve a longer term than
our directors. Starting on July 31, 2005, when the requirements of Rule 10A-3 relating to listed company audit committees become applicable to foreign private issuers, we expect to rely on an exemption under that rule which is available to foreign
private issuers with boards of corporate auditors meeting certain criteria. We will make the disclosure required by Item 16D of Form 20-F regarding such reliance in our annual reports on Form 20-F for the fiscal year ending December 31, 2005 and
thereafter.



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Nasdaq Marketplace Rule 4350(f) provide that each issuer provide for a quorum as specified in its by-laws
for any meeting of holders of common stock, which shall be at least 33 1/3% of the outstanding shares of the issuers voting common stock. We provide for a quorum as specified in the Articles of Incorporation for any meeting of holders of
common stock, which shall be at least one-third of our outstanding shares of the voting common stock.



Nasdaq Marketplace Rule 4350(g) provides that each issuer solicit proxies and provide proxy statements for all meetings of shareholders and provide copies
of such proxy solicitation to Nasdaq. Currently a Japanese company whose shares are listed on the securities exchanges defined in the Securities and Exchange Law, including us, may, but is not required to, solicit proxies for meetings of
shareholders. If such a Japanese company solicits proxies for a meeting of shareholders, it is required to provide proxy statements and documents for reference as provided for in the Securities and Exchange Law and provide copies of such proxy
statements and documents for reference to the Kanto Local Finance Bureau.



Nasdaq Marketplace Rule 4350(h) provides that each issuer conduct appropriate review of all related party transactions for potential conflict of interest situations on an ongoing basis and that all such transactions
be approved by the issuers audit committee or another independent body of the board of directors. Following the requirements of the Commercial Code of Japan, we require a director to obtain the approval of the Board of Directors in order for
such director to accept a transfer of a product or any other asset of Trend Micro, to transfer a product or any other asset of such director to Trend Micro, to receive a loan from Trend Micro, or to effect any other transaction with Trend Micro, for
himself or a third party.



Nasdaq Marketplace Rule 4350(i)
provides that shareholder approval be obtained prior to the issuance of designated securities under subparagraph (A), (B), (C) or (D) of Rule 4350(i). Where a Japanese joint stock company (Kabushiki-Gaisha), issues common shares or other shares,
stock acquisition rights or bonds with stock acquisition rights under the Commercial Code of Japan, it is necessary for the board of directors to determine the conditions of issuance; provided, however, that this shall not apply if the Articles of
Incorporation provide that such conditions shall be determined by the shareholders meeting. Currently, Trend Micros Articles of Incorporation do not provide for any such exception. Additionally, if the company issues such securities to
persons other than shareholders (in case of common shares or other shares) at a specially favorable issue price or (in case of stock acquisition rights or bonds with stock acquisition rights) on specially favorable conditions, even when there are
provisions related thereto in the Articles of Incorporation, some matters related to such issuance shall be resolved by special resolution of the shareholders meeting.



The rights of ADR holders, including their rights relating to corporate governance practices, are provided in the deposit
agreement which is an exhibit to this annual report.



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LIMITATION OF LIABILITIES OF SOME DIRECTORS



We have entered into an agreement with one of our directors, Hirotaka Takeuchi, that limits his liabilities to us for
damages suffered by us due to his acts taken in good faith and without gross negligence, up to the higher of (a) (Yen)10 million or (b) the amount specified in the agreement, which is the aggregate amount of two years remunerations and other
compensation received or entitled to be received by him.



D. Employees.



As of December 31, 2004, we had 2,466 employees, of whom
1,719 were located in Asia, 381 were located in the United States, 281 were located in Europe and 85 were located in other regions. And of the 2,466 employees, 421 were in administrative positions, 653 were in sales and marketing positions, 641 were
in research and development positions and 751 were in technical support positions.



As of December 31, 2003, we had 1,890 employees, of whom 1,255 were located in Asia, 312 were located in the United States, 270 were located in Europe and 53 were located in other regions. And of the 1,890 employees,
351 were in administrative positions, 581 were in sales and marketing positions, 476 were in research and development positions and 482 were in technical support positions.



Our employees do not belong to any labor union. We believe that our employee relations are good.



E. Share Ownership.



See Item 6.A for information on share ownership of our directors and senior management.



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2002 INCENTIVE PLAN



We have adopted the Trend Micro Incorporated Incentive Plan. The plan was authorized in April 2002. We have issued warrants for a total of 1,159,420
shares at an exercise price of (Yen)3,450, of which 579 shares have been redeemed as of July, 2002. As of April 30, 2005, warrants to purchase a total of 475,362shares have been exercised, The following table shows information about the warrants
granted to our directors and executive officers under the plan which were outstanding as of April 30, 2005.



|                                                       |  |                 |  |                                   |  |                          |            
|------------------------------------------------------ |  | --------------- |  | --------------------------------- |  | ------------------------ | -----------
|Name                                                   |  | Expiration Date |  | Total Number of Shares Underlying |  | Aggregate Exercise Price
|Steve Chang                                            |  | 4/11/2006       |  | 3,188                             |  | (Yen)                    | 10,998,600 
|Eva Chen                                               |  | 4/11/2006       |  | 7,246                             |  | (Yen)                    | 24,998,700 
|Mahendra Negi                                          |  | 4/11/2006       |  | 21,739                            |  | (Yen)                    | 74,999,550 
|Directors and Executive Officers as a group (8 people) |  | 4/11/2006       |  | 32,173                            |  | (Yen)                    | 110,996,850



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2003 INCENTIVE PLAN



Our Shareholders Meeting and Board of Directors have authorized three incentive plans for fiscal 2003. The first plan was authorized in February,
2003. Stock acquisition rights for a total of 1,999,500 shares were issued at an exercise price of (Yen)2,230. of which 290,500 shares have been redeemed as of January, 2004. As of April 30, 2005, stock acquisition rights for total of 803,500 shares
have been exercised.



The following table shows information
about the acquisition rights granted to our directors and executive officers under the first 2003 incentive plan which were outstanding as of April 30, 2005.



|                                                       |  |                 |  |                                   |  |                          |           
|------------------------------------------------------ |  | --------------- |  | --------------------------------- |  | ------------------------ | ----------
|Name                                                   |  | Expiration Date |  | Total Number of Shares Underlying |  | Aggregate Exercise Price
|Steve Chang                                            |  | 10/31/2007      |  | 1,500                             |  | (Yen)                    | 3,345,000 
|Eva Chen                                               |  | 10/31/2007      |  | 18,500                            |  | (Yen)                    | 41,255,000
|Mahendra Negi                                          |  | 10/31/2007      |  | 21,000                            |  | (Yen)                    | 46,830,000
|Directors and Executive Officers as a group (8 people) |  | 10/31/2007      |  | 41,000                            |  | (Yen)                    | 91,430,000



The second plan was
authorized in May, 2003. Stock acquisition rights for a total of 2,500,000 shares were issued at an exercise price of (Yen)1,955, of which 215,500 shares have been redeemed as of January, 2004. As of April 30, 2005, stock acquisition rights for a
total of 544,500 shares have been exercised.



The following
table shows information about the options granted to our directors and executive officers under the second 2003 incentive plan which were outstanding as of April 30, 2005.



|                                                       |  |                 |  |                                   |  |                         |            
|------------------------------------------------------ |  | --------------- |  | --------------------------------- |  | ----------------------- | -----------
|Name                                                   |  | Expiration Date |  | Total Number of Shares Underlying |  | Aggregate ExercisePrice
|Steve Chang                                            |  | 5/27/2008       |  | 24,000                            |  | (Yen)                   | 46,920,000 
|Eva Chen                                               |  | 5/27/2008       |  | 45,000                            |  | (Yen)                   | 87,975,000 
|Mahendra Negi                                          |  | 5/27/2008       |  | 55,000                            |  | (Yen)                   | 107,525,000
|Directors and Executive Officers as a group (8 people) |  | 5/27/2008       |  | 124,000                           |  | (Yen)                   | 242,420,000



The third plan was
authorized in November, 2003. Stock acquisition rights for a total of 1,500,000 shares were issued at an exercise price of (Yen)2,695. As of April 30, 2005, stock acquisition rights for a total of 317,500 shares have been exercised.



The following table shows information about the options granted to our
directors and executive officers under the third 2003 incentive plan which were outstanding as of April 30, 2005.



|                                                       |  |                 |  |                                   |  |                         |            
|------------------------------------------------------ |  | --------------- |  | --------------------------------- |  | ----------------------- | -----------
|Name                                                   |  | Expiration Date |  | Total Number of Shares Underlying |  | Aggregate ExercisePrice
|Steve Chang                                            |  | 11/13/2008      |  | 15,000                            |  | (Yen)                   | 40,425,000 
|Eva Chen                                               |  | 11/13/2008      |  | 38,500                            |  | (Yen)                   | 103,757,500
|Mahendra Negi                                          |  | 11/13/2008      |  | 29,000                            |  | (Yen)                   | 78,155,000 
|Directors and Executive Officers as a group (8 people) |  | 11/13/2008      |  | 82,500                            |  | (Yen)                   | 222,337,500



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2004 INCENTIVE PLAN



Our Shareholders Meeting and Board of Directors have authorized two incentive plans for fiscal 2004. The first plan was authorized in April, 2004.
Stock acquisition rights for a total of 3,000,000 shares were issued at an exercise price of (Yen)4,310. The following table shows information about the acquisition rights granted to our directors and executive officers under the 2004 incentive plan
which were outstanding as of April 30, 2005.



|                                                       |  |                 |  |                                   |  |                          |            
|------------------------------------------------------ |  | --------------- |  | --------------------------------- |  | ------------------------ | -----------
|Name                                                   |  | Expiration Date |  | Total Number of Shares Underlying |  | Aggregate Exercise Price
|Eva Chen                                               |  | 4/27/2009       |  | 80,000                            |  | (Yen)                    | 344,800,000
|Mahendra Negi                                          |  | 4/27/2009       |  | 70,000                            |  | (Yen)                    | 301,700,000
|Directors and Executive Officers as a group (8 people) |  | 4/27/2009       |  | 150,000                           |  | (Yen)                    | 646,500,000



The second plan was
authorized in October, 2004 Stock acquisition rights for a total of 2,000,000 shares were issued at an exercise price of (Yen)5,090. The following table shows information about the options granted to our directors and executive officers under the
second 2004 incentive plan which were outstanding as of April 30, 2005.



|                                                       |  |                 |  |                                   |  |                          |            
|------------------------------------------------------ |  | --------------- |  | --------------------------------- |  | ------------------------ | -----------
|Name                                                   |  | Expiration Date |  | Total Number of Shares Underlying |  | Aggregate Exercise Price
|Eva Chen                                               |  | 10/27/2009      |  | 80,000                            |  | (Yen)                    | 407,200,000
|Mahendra Negi                                          |  | 10/27/2009      |  | 56,000                            |  | (Yen)                    | 285,040,000
|Directors and Executive Officers as a group (8 people) |  | 10/27/2009      |  | 136,000                           |  | (Yen)                    | 692,240,000



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Item 7. Major Shareholders and Related Party Transactions.



A. Major Shareholders.



The Securities and Exchange Law of Japan requires any company which is the issuer of securities which are, among other
considerations, listed on any Japanese stock exchange in Japan to disclose information about its major shareholders, including approximately its ten largest shareholders of record as of the end of each fiscal year and each semi-annual period. Also,
as explained under Item 10.D below, any person who becomes, beneficially or of record and solely or jointly, a holder of more than 5% of the total issued shares of a company listed on any Japanese stock exchange, as calculated pursuant to the
Securities and Exchange Law of Japan, must file with the Local Finance Bureau having jurisdiction within five business days a report concerning such shareholding. For this purpose, shares issuable to such person upon his exchange of exchangeable
securities, conversion of convertible securities or exercise of warrants or stock acquisition rights are taken into account in determining both the size of his holding and the issuers total issued shares.



As of December 31, 2004, there were four shareholders of record holding 5% or
more of the total issued shares of our common stock. One of these shareholders of record, Trueway Company Limited, which held of record 20,186,500 shares, or 14.8% of the total issued shares, is a corporation controlled by Yeh Min Yuen. Another
record shareholder, Gainway Enterprises Limited, which held of record 10,108,000 shares, or 7.4% of the total issued shares, is a corporation controlled by Liao Hsueh-Hsuan. These two individuals beneficial ownership of our common stock is
disclosed in the table below.



Japan Trustee Service Bank and
Master Trust Bank of Japan are both the custody banks of Japanese mutual funds, pension fund and other trust funds. Japan Trustee Service Bank held of record 10,188,500 shares, or 7.5% of the total issued shares. Master Trust Bank of Japan held of
record 10,072,500 shares, or 7.4% of the total issued shares.



Within the last three years, to our knowledge, the following significant changes in the percentage ownership held by major shareholders have occurred:



We are aware of the filing by Merrill Lynch Investment Managers Limited that, as of March 31, 2002, it and its affiliates together owned, beneficially
or of record, 9.5% of the issued shares of our common stock, as calculated pursuant to the Securities and Exchange Law of Japan. Subsequently, Merrill Lynch Investment Managers Limited made another filing, which reported that, as of May 31, 2002, it
and its affiliates owned, beneficially or of record, 5.2% of the issued shares of our common stock, as calculated pursuant to the Securities and Exchange Law of Japan. Subsequently, Merrill Lynch Investment Managers Limited made another filing
reporting that, as of June 30, 2002, their beneficial or record ownership fell below 5% of the issued shares of our common stock, as calculated pursuant to the Securities and Exchange Law of Japan.



We are aware of the filing by Barclays Global Investors that, as of March 31,
2005, it and its affiliates together owned, beneficially or of record, 6.4% of the issued shares of our common stock, as calculated pursuant to the Securities and Exchange Law of Japan.



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The following table shows information known to us regarding the beneficial ownership of our common stock
as of March 31, 2005, by each person known by us to beneficially own more than 5% of the outstanding shares of our Common stock.



|                 |  |                                           |  |            |  
|---------------- |  | ----------------------------------------- |  | ---------- | -
|                 |  | Shares of common stock beneficially owned | 
|Name             |  | Number                                    |  | Percentage |  
|Yeh Min-Yuen     |  | 20,186,500                                |  | 14.8       | %
|Liao Hsueh-Hsuan |  | 10,108,000                                |  | 7.4        | %



As of December 31,
2004, there were 83 record shareholders with addresses in the United States, and those U.S. holders held 23,833,758 shares of our common stock including 934,800 held through our ADSs.



To the extent known to us, we are not directly or indirectly owned or controlled by another corporation, by the Japanese or
any other government or by any other natural or legal persons severally or jointly.



We know of no arrangements the operations of which may at a later time result in a change of control of Trend Micro.



B. Related Party Transactions



Jenny Chang, a sister of Representative Director, President and Chief Executive Officer Eva Chen, and the spouse of Representative Director and Chairman of the Board
Steve Chang, is a Senior Executive Vice President and Co-founder of Trend Micro.



Julie Lin is a sister of Steve Chang and is a Global Program Manager of Trend Micro U.S.



Elita Chen, a cousin of Eva Chen, is a Project Manager of Trend Micro Taiwan.



Cindia Chen, a cousin of Eva Chen, works on the general administrative staff of Trend Micro Taiwan.



The compensation of the above listed persons is determined by Trend Micro on no more favorable terms than those applicable to employees with equivalent
qualifications and responsibilities.



C. Interests of Experts and Counsel.



Not applicable.



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Item 8. Financial Statements.



A. Consolidated Statements and Other Financial Information.



Consolidated Financial Statements



The information required by this item has been provided beginning on page F-2.



Legal or Arbitration Proceedings



The information on legal or arbitration proceedings required by this item is set forth in Item 4.B of this annual report.



Dividend Policy



We intend to continue to return profits to shareholders based on the net profit on a consolidated basis while striving to
enhance financial strength and secure inner reserve in order to deal with a volatile business environment and maintain a competitive edge against competitors. As our basic policy about dividends, we plan to pay a year-end dividend on the basis of a
dividend ratio of 30%.



B. Significant Changes.



See Item 5.B of this annual report for information on the redemption of
unsecured bonds.



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Item 9. The Offer and Listing.



A. Offer and Listing Details.



JAPANESE OVER-THE-COUNTER MARKET AND THE TOKYO STOCK EXCHANGE



Our shares have been traded since August 18, 1998 on the Japanese over- the-counter market. On August 17, 2000, our shares were listed on Tokyo Stock
Exchange, which is the principal trading market for the shares. Prior to August 18, 1998, there was no public market for the shares. The following table shows, for the periods indicated, the high and low closing per-share sale prices of the shares
as reported by the Japan Securities Dealers Association and Tokyo Stock Exchange, retroactively taking into account the one-into-three stock split effected on September 30, 1999, and the one-into-two stock split effected on March 31, 2001.



|                                 |  |                     |  |      
|-------------------------------- |  | ------------------- |  | -----
|                                 |  | Yen Price Per Share
|Japanese Over-The-Counter Market |  | High                |  | Low  
|1999                             |  | 12,500              |  | 1,183
|2000                             |  |                     |  |      
|First quarter                    |  | 16,400              |  | 8,450
|Second quarter                   |  | 9,550               |  | 4,750
|Third quarter (until August 16)  |  | 9,200               |  | 6,700
|Tokyo Stock Exchange             |  |                     |  |      
|2000                             |  |                     |  |      
|Third quarter (from August 17)   |  | 9,005               |  | 6,805
|Fourth quarter                   |  | 8,100               |  | 4,135
|2001                             |  | 6,375               |  | 1,670
|2002                             |  | 3,890               |  | 1,880
|2003                             |  | 3,530               |  | 1,440
|First quarter                    |  | 2,250               |  | 1,663
|Second quarter                   |  | 2,120               |  | 1,440
|Third quarter                    |  | 2,575               |  | 1,795
|Fourth quarter                   |  | 3,530               |  | 2,300
|2004                             |  | 5,730               |  | 2,815
|First quarter                    |  | 3,710               |  | 2,815
|Second quarter                   |  | 4,920               |  | 3,490
|Third quarter                    |  | 5,050               |  | 4,070
|Fourth quarter                   |  | 5,730               |  | 4,840
|2005                             |  |                     |  |      
|January                          |  | 5,530               |  | 4,620
|February                         |  | 4,930               |  | 4,530
|March                            |  | 4,940               |  | 4,550
|April                            |  | 4,740               |  | 3,850



On May 27, 2005, the closing sale
price of our shares on the Tokyo Stock Exchange was (Yen) 3,520 per share.



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U.S. MARKET



Certain of our shares have been traded on The Nasdaq National Market since July 8, 1999 in the form of American Depositary Shares under the symbol
TMIC. The following table shows, for the periods indicated, the high and low closing per-ADS sale price of the ADSs, retroactively taking into account the one-into-three stock split effected on September 30, 1999, the one-into-two stock
split effected on March 31, 2001, and the ten-into-one ADR ratio change which take effect on July 2, 2001.



|               |  |                      |  |      
|-------------- |  | -------------------- |  | -----
|               |  | Dollar Price Per ADS
|               |  | High                 |  | Low  
|1999           |  |                      |  |      
|Third quarter  |  | 65.63                |  | 23.33
|Fourth quarter |  | 121.25               |  | 66.88
|2000           |  | 159.38               |  | 32.50
|2001           |  | 59.38                |  | 14.50
|2002           |  | 30.90                |  | 15.55
|2003           |  | 31.65                |  | 12.16
|First quarter  |  | 18.90                |  | 14.22
|Second quarter |  | 17.80                |  | 12.16
|Third quarter  |  | 22.50                |  | 15.00
|Fourth quarter |  | 31.65                |  | 21.03
|2004           |  | 55.45                |  | 26.62
|First quarter  |  | 35.06                |  | 26.62
|Second quarter |  | 44.97                |  | 31.04
|Third quarter  |  | 46.50                |  | 37.41
|Fourth quarter |  | 55.45                |  | 44.46
|2005           |  |                      |  |      
|January        |  | 54.65                |  | 44.02
|February       |  | 46.64                |  | 43.22
|March          |  | 47.20                |  | 42.48
|April          |  | 43.70                |  | 35.45



On May 27, 2005, the
closing sale price of the ADSs on The Nasdaq National Market was $32.45 per ADS.



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B. Plan of Distribution.



Not applicable.



C. Markets.



See Item 9. A. of this annual report for information on the markets on which our common stock is listed or quoted.



D. Selling Shareholders.



Not applicable.



E. Dilution.



Not applicable.



F. Expenses of the Issue.



Not applicable.





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Item 10. Additional Information.



A. Share Capital.



Not applicable.



B. Memorandum and Articles of Association.



The following is a summary of material information concerning the shares, including summaries of material provisions of our Articles of Incorporation and share handling regulations, and of the Japanese Commercial Code
and related legislation. These summaries should be read together with the Articles of Incorporation and the share handling regulations which have been filed as exhibits to our previous filings with the Securities and Exchange Commission.



GENERAL



Our authorized share capital as of March 31, 2005 is 250,000,000 shares, of which 135,968,861 shares are issued and
133,398,937 shares are outstanding as of the same date. Under the Japanese Commercial Code, shares must be registered and are transferable by delivery of share certificates. In order to assert shareholders rights against us, a shareholder must
have its name and address registered on our register of shareholders, in accordance with our share handling regulations. The registered beneficial holder of deposited shares underlying the ADSs is the depositary for the ADSs. Accordingly, holders of
ADSs will not be able to assert shareholders rights.



A
holder of shares may choose, at its discretion, to participate in the central clearing system for share certificates under the Law Concerning Central Clearing of Share Certificates and Other Securities of Japan. Participating shareholders must
deposit certificates representing all of the shares to be included in this clearing system with Japan Securities Depository Center. If a holder is not a participating institution in the Securities Center, it must participate through a participating
institution, such as a securities company or bank having a clearing account with the Securities Center. All shares deposited with the center will be registered in the name of the Securities Center on our register of shareholders. Each participating
shareholder will in turn be registered on our register of beneficial shareholders and be treated in the same way as shareholders registered on our register of shareholders. For the purpose of transferring deposited shares, delivery of share
certificates is not required. Entry of the share transfer in the books maintained by the Securities Center for participating institutions, or in the book maintained by a participating institution for its customers, has the same effect as delivery of
share certificates. The Securities Center system is intended to reduce paperwork required in connection with transfers of shares. Beneficial owners may at any time withdraw their shares from deposit and receive share certificates.



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In view of the globalization of securities trading, the Government of Japan is seeking to enhance the
safety, efficiency and convenience of the clearing system for securities in Japan. For this purpose, a series of laws has been enacted to establish a unified clearing system for various types of securities and to eliminate certificates representing
securities to be traded through this system. A new law to incorporate shares of stock into this paperless clearing system was promulgated on June 9, 2004 and will come into force and effect on a date, to be designated by a cabinet
ordinance, which will occur within five years from the date of promulgation. On this effective date, the paperless clearing system is expected to become compulsorily applicable to the shares of all listed companies in Japan. On the same date, all
share certificates issued by listed companies will become void and the Japan Securities Depository Center clearing system will terminate, but measures will be taken to ensure a smooth transition to the paperless clearing system with respect to all
shares, whether the share certificates are then in the possession of shareholders or the Japan Securities Depository Center.



The paperless clearing system will be operated by a clearing organization (which may be the same entity as the Japan Securities Depository Center), and
certain institutions, typically securities companies, will participate in the system directly or indirectly through other participating institutions. Following the application of the paperless clearing system to the shares of all listed companies,
shareholders of each listed company will be recorded in such companys register of shareholders. The register of shareholders will be updated at each record date for determining shareholders entitled to dividends and voting rights, and at any
other date that may be designated by the company, based on information provided to the company by the clearing organization. Transfer of shares will be effected by book-entry in accounts maintained by the transferor and the transferee at
participating institutions. This paperless clearing system is not yet applicable to shares of listed companies as of the date hereof.



In addition, the Japanese Commercial Code may change significantly in the near future. The New Commercial Code has just passed the House of
Representatives and will become effective some time next year if it passes the House of Councilors.



DIVIDENDS



Under our
Articles of Incorporation, our financial accounts will be closed on December 31 of each year and dividends, if any, will be paid to shareholders of record at December 31. In addition to year-end dividends, the Board of Directors may by resolution
declare an interim cash dividend to shareholders of record as of June 30 of each year. Under the Japanese Commercial Code, however, we cannot declare or pay dividends unless specified financial criteria are met based on the amount of our stated
capital and legal reserves.



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JAPANESE UNIT SHARE SYSTEM



In accordance with the requirements of the Japanese Commercial Code, our Articles of Incorporation provide that 500 shares
constitute one unit. The number of shares constituting a unit is not permitted to exceed 1,000 shares or one-two-hundredth (1/200) of the number of all issued shares. The unit share system does not affect the transferability of ADSs,
which may be transferred in lots of any size.



Under the
Japanese Commercial Code and the Deposit Agreement, holders of ADSs will be able to surrender ADSs and withdraw the underlying shares from deposit only in whole unit lots of one unit or larger. A holder who owns ADRs evidencing less than 500 ADSs
will indirectly own less than a whole unit. Such a holder will not be able to dispose of its shares in lots of less than one unit and will not have access to the Japanese market through surrender of their ADSs and withdrawal and sale in Japan of the
underlying shares. The Japanese unit share system does not affect the transferability of ADSs, which may be transferred in lots of any size.



A holder of shares representing less than one unit may at any time require us to purchase such shares. Such shares will be purchased at their last
reported sale price on the First Section of the Tokyo Stock Exchange on the day a request pertaining to such purchase is delivered to our transfer agent or, if no sales take place on that day, the price at which the next sale of shares is effected
on the First Section of the Tokyo Stock Exchange, less applicable brokerage commissions. However, because holders of ADSs representing less than one unit are not able to withdraw the underlying shares from deposit, such holders will not be able to
exercise this right as a practical matter.



Under our Articles
of Incorporation, a holder of shares representing less than one unit has all the rights that a holder of shares representing a full unit of shares; except for the rights:



| |  | to require us to issue share certificates;
|- |  | ------------------------------------------



| |  | to require us to issue replacement certificates for lost, stolen or destroyed share certificates; and
|- |  | -----------------------------------------------------------------------------------------------------



| |  | to vote.
|- |  | --------



A holder of shares representing less than one unit cannot exercise any voting rights pertaining to such shares. In calculating the quorum for various voting purposes, the aggregate number of shares representing less
than one unit will be excluded from the number of outstanding shares. A holder of shares representing one or more whole units will have one vote for each unit held.



GENERAL MEETING OF SHAREHOLDERS



We normally hold our ordinary general meeting of shareholders in March of each year in Tokyo, Japan. In addition, we may hold an extraordinary general
meeting of shareholders whenever necessary by giving at least two weeks advance notice. Under the Japanese Commercial Code, notice of any shareholders meeting must be given to each shareholder having voting rights or, in the case of a
non-resident shareholder, to his resident proxy or mailing address in Japan in accordance with our share handling regulations, at least two weeks prior to the date of the meeting.



Any shareholder or group of shareholders holding at least 300 voting rights, or 1% of the total outstanding voting rights,
for a continuous period of six months or longer may propose a matter for consideration at a shareholders meeting by submitting a written request to the Directors at least eight weeks before such meeting.



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VOTING RIGHTS



A shareholder is generally entitled to one vote per unit. In general, under the Japanese Commercial Code, a resolution can be adopted at a general meeting
of shareholders by a majority of the voting rights represented at the meeting. The Commercial Code and our Articles of Incorporation require a quorum for the election of directors and corporate auditors of not less than one-third of the total number
of outstanding voting rights. Our shareholders are not entitled to cumulative voting in the election of directors. A corporate shareholder whose outstanding voting rights are in turn more than one-quarter directly or indirectly owned by us does not
have voting rights. Shareholders may exercise their voting rights through proxies, provided that such proxies are also shareholders who have voting rights.



The Japanese Commercial Code and the Article of Incorporation provide that a quorum of not less than one-third of outstanding voting rights must be
present at a shareholders meeting to approve any material corporate actions such as:



| |  | amendment of the Articles of Incorporation;
|- |  | -------------------------------------------



| |  | the removal of a director or corporate auditor;
|- |  | -----------------------------------------------



| |  | establishment of a 100% parent-subsidiary relationship by way of share exchange or share transfer;
|- |  | --------------------------------------------------------------------------------------------------



| |  | a dissolution, merger or consolidation;
|- |  | ---------------------------------------



| |  | a company split;
|- |  | ----------------



| |  | the transfer of the whole or an important part of our business;
|- |  | ---------------------------------------------------------------



| |  | the taking over of the whole of the business of any other corporation;
|- |  | ----------------------------------------------------------------------



| |  | any issuance of new shares at a specially favorable price (or any issuance of bond with share acquisition right with specially favorable terms or of share
acquisition right with specially favorable terms to persons other than shareholders.
|- |  | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  | the negotiated purchase of treasury shares;
|- |  | -------------------------------------------



| |  | a stock consolidation;
|- |  | ----------------------



| |  | limitation of liabilities of directors and corporate auditors;
|- |  | --------------------------------------------------------------



| |  | capital reduction; and,
|- |  | -----------------------



| |  | a continuing to exist of a company or dormant company.
|- |  | ------------------------------------------------------



At least two-thirds of the voting rights represented at the meeting must approve such actions.



The voting rights of holders of ADSs are exercised by the depositary based on
instructions from such holders. An agent of the depositary is the record holder of the underlying shares.



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SUBSCRIPTION RIGHTS



Holders of shares have no preemptive rights under our Articles of Incorporation. Under the Japanese Commercial Code, the Board of Directors may, however,
determine that shareholders be given subscription rights in connection with a particular issue of new shares. In this case, such rights must be given on uniform terms to all shareholders as of a specified record date by at least two weeks
prior public notice to shareholders of the record date. Public or individual notice must be given to each of these shareholders at least two weeks prior to the date of expiration of the subscription rights.



Rights to subscribe for new shares may be transferable or nontransferable as
determined by the Board of Directors. If subscription rights are not transferable, a purported transfer by a shareholder who is not resident in Japan will be enforceable against us and third parties only with our prior written consent.



LIQUIDATION RIGHTS



Upon liquidation, the assets remaining after payment of all debts, liquidation expenses and taxes will be distributed among
the shareholders in proportion to the number of shares they own.



LIABILITY
TO FURTHER CALLS OR ASSESSMENTS



All of our currently
outstanding shares, including shares represented by the ADSs, are fully paid and nonassessable.



INDEMNIFICATION OF DIRECTORS



Pursuant to the Commercial Code and our Articles of Incorporation, we may, by resolution of our Board of Directors, release the liabilities of any Directors or Executive Officers to us for damages suffered by us due to their acts taken in
good faith and without gross negligence, to the extent permitted by law and our Articles of Incorporation. In addition, we may execute with outside directors agreements that limit their liabilities to us for damages suffered by us due to their acts
in good faith and without gross negligence, to the extent permitted by the laws of Japan and our Articles of Incorporation.



TRANSFER AGENT



UFJ Trust and Banking Co., Limited is the transfer agent for our common stock. UFJ Trust and Banking Co.s office is located at 4-3, Marunouchi
1-chome, Chiyoda-ku, Tokyo, 100-0005 Japan. UFJ Trust and Banking Co., maintains our register of shareholders and records transfers of record ownership upon presentation of share certificates.



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REPURCHASE OF SHARES BY US



The Japanese Commercial Code, in principle, permits us to acquire, hold or dispose of our shares. We may acquire our shares
on the First Section of the Tokyo Stock Exchange on which the shares are traded, through the Japanese stock exchange, if any, on which such shares are listed, by way of tender offer (pursuant to a resolution of a meeting of the Board of Directors,
by having been provided for in the Articles of Incorporation), from a specific party (pursuant to a special resolution of an ordinary general meeting of shareholders) or from our subsidiary (pursuant to a resolution of the Board of Directors). When
such acquisition is made by us from a specific party other than our subsidiary, any shareholder may make a request directly to a director, five days prior to the relevant shareholders meeting, that we acquire the shares held by such
shareholder. Any such acquisition of shares must satisfy certain requirements, including that the total amount of the purchase price may not exceed the amount of the retained earnings available for dividend payments and the amount of any reduction
of the stated capital, additional paid-in capital or legal reserve (if such reduction of the stated capital, additional paid-in capital or legal reserve has been authorized pursuant to a resolution of the relevant general meeting of shareholders),
minus the amount to be paid by way of appropriation of retained earnings for the relevant fiscal year. However, if it is anticipated that the net assets on the balance sheet as at the end of the relevant fiscal year will be less than the aggregate
amount of the stated capital, additional paid-in capital, the accumulated legal reserve and other certain items prescribed under the law, we may not purchase such shares. We may hold the shares acquired in compliance with the provisions of the
Japanese Commercial Code, and generally, may dispose of or cancel such shares by a resolution of the Board of Directors.



DAILY PRICE FLUCTUATION LIMITS UNDER JAPANESE STOCK EXCHANGE RULES



Share prices on Japanese stock exchanges are determined on a real-time basis by the equilibrium between bids and offers. These exchanges are order-driven
markets without specialists or market makers to guide price formation. To prevent excessive volatility, these exchanges set daily upward and downward price fluctuation limits for each share, based on the previous days closing price. Although
transactions may continue at the upward or downward limit price if the limit price is reached on a particular trading day, no transactions may take place outside these limits. Consequently, an investor wishing to sell at a price above or below the
relevant daily limit may not be able to sell his shares at such price on a particular trading day, or at all.



On May 27, 2005, the closing price of our shares on the Tokyo Stock Exchange was (Yen)3,520 per share. The following table shows the daily price limit for
a stock on the Tokyo Stock Exchange with a closing price of between (Yen)3,000 and (Yen)5,000 per share, as well as the daily price limit if our per share price were to rise to between (Yen)5,000 and (Yen)10,000, or fall to between (Yen)2,000 and
(Yen)3,000. Other daily price limits would apply if our per share price moved to other ranges.



|                                              |  |                              |  |           |  |                |  |              
|--------------------------------------------- |  | ---------------------------- |  | --------- |  | -------------- |  | -------------
|Selected Daily Price Limits                   |  |                             
|Previous Days Closing Price or Special Quote |  | Maximum Daily Price Movement
|Over                                          |  | (Yen)  2,000                 |  | Less than |  | (Yen)    3,000 |  | (Yen)     400
|Over                                          |  | 3,000                        |  | Less than |  | 5,000          |  | 500          
|Over                                          |  | 5,000                        |  | Less than |  | 10,000         |  | 1,000        



For a history of the
trading price of our shares on the Tokyo Stock Exchange, see Item 9.A of this annual report.



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C. Material Contracts.



The information required by this item is set forth in Item 4.



D. Exchange Controls.



The Foreign Exchange and Foreign Trade Law of Japan and the cabinet orders and ministerial ordinances issued under the law govern the acquisition and
holding of shares of equity securities of Japanese corporations, including Trend Micro, by exchange non-residents and by foreign investors.



Exchange non-residents are individuals who are not resident in Japan and corporations whose principal offices are located outside Japan. Generally,
branches and other offices of non-resident corporations located within Japan are regarded as exchange residents of Japan and branches and other offices of Japanese corporations located outside Japan are regarded as exchange non-residents of Japan.



Foreign investors are defined to be:



| |  | individuals not resident in Japan;
|- |  | ----------------------------------



| |  | corporations which are organized under the laws of foreign countries or whose principal offices are located outside Japan;
|- |  | --------------------------------------------------------------------------------------------------------------------------



| |  | corporations not less than 50% of the shares of which are directly or indirectly held by individuals or corporations described above; and
|- |  | -----------------------------------------------------------------------------------------------------------------------------------------



| |  | a corporation in which a majority of the directors or similar persons having the power of representation are non-resident individuals of Japan.
|- |  | -----------------------------------------------------------------------------------------------------------------------------------------------



In accordance with this amendment, with minor exceptions, all aspects of the
foreign exchange and foreign trade transactions which under the previous law required licensing or other approval or prior notification to the Minister of Finance of Japan now only require reporting of such transactions after they occur. However,
the Minister of Finance of Japan retains the power to impose a licensing requirement for some transactions in limited circumstances.



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OFFERING OF THE SHARES



A selling shareholder is required to file a report concerning the transfer of securities with the Minister of Finance of Japan within 20 days of the
date of transfer.



ACQUISITION OF SHARES



Except as described below, there are no limits under Japanese law on the
right of foreign investors to hold or vote our securities. Exchange non- residents who acquire from an exchange resident of Japan shares of a company, listed on any Japanese stock exchange or whose shares are traded on the Japanese over-the-counter
market, are not required to file any notice prior to the acquisition. Under the Foreign Exchange and Foreign Trade Law the Minister of Finance may in some exceptional circumstances require prior approval for any such acquisition. An exchange
resident who transfers shares of a listed company to an exchange non-resident for value exceeding (Yen)100 million must file a report concerning the transfer of securities with the Minister of Finance within 20 days of the date of such transfer.



If a foreign investor acquires shares of a company listed on
any Japanese stock exchange or whose shares are traded on the Japanese over-the-counter market and as a result of the acquisition, such foreign investor and designated related parties hold 10% or more of the issued shares, the foreign investor must
file a report of the acquisition with the Minister of Finance and other Ministers having jurisdiction over the business of the issuer within 15 days from and including the date of the acquisition. In limited circumstances, including the case of an
acquisition of our shares that causes a foreign investors ownership to reach such percentage, however, a prior notification of the acquisition must be filed with the Minister of Finance and other Ministers having jurisdiction over the business
of the issuer. These Ministers may modify or prohibit the proposed acquisition.



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DIVIDENDS AND PROCEEDS OF SALES



Under the Foreign Exchange and Foreign Trade Law, dividends paid on, and the proceeds of sales in Japan of, shares held by
exchange non-residents may, in general, be converted into any foreign currency and repatriated abroad. The requirements described in Acquisition of Shares above do not apply to the acquisition of shares by non-residents by way of stock
splits.



AMERICAN DEPOSITARY SHARES



The formalities or restrictions referred to under Acquisition of
Shares above do not apply to the deposit of shares by a non-resident of Japan, the issuance of ADRs evidencing the ADSs created by such deposit in exchange therefore and the withdrawal of whole units of underlying shares upon surrender of
ADRs.



REPORTING OF SUBSTANTIAL SHAREHOLDINGS



The Securities and Exchange Law of Japan requires any person who becomes,
beneficially or of record and solely or jointly, a holder of more than 5% of the total issued shares of a company listed on any Japanese stock exchange or whose shares are traded on the Japanese over-the-counter market to file with the Financial
Services Agency within five business days a report concerning such shareholding.



A similar report must also be made in respect of any subsequent change of 1% or more in any such holding. For this purpose, shares issuable to such person upon conversion of convertible securities or exercise of share
subscription warrants are taken into account in determining both the number of shares held by the holder and the issuers total issued share capital. Copies of each such report must also be sent to the issuer of such shares and all Japanese
stock exchanges on which the shares are listed



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E. Taxation.



JAPANESE TAXATION



In general, for Japanese tax purposes, owners of ADRs evidencing ADSs will be treated as the owners of the shares represented by such ADSs, and no
Japanese tax will be payable on exchanges of shares for ADSs, and ADSs for shares.



This discussion does not consider the effect of any state, local or national tax laws other than Japanese tax laws that may be applicable to a purchaser of shares or ADSs. Furthermore, the Convention Between the
United States of America and Japan for the Avoidance of Double Taxation and the Prevention of Fiscal Evasion with Respect to Taxes on Income (the Treaty), the laws, or administrative or judicial interpretation of the Treaty or the
laws may change, and the changes may have retroactive effect. We urge you to consult your tax advisors regarding the Japanese and other tax consequences of owning and disposing of shares and ADSs.



The following summary describes the principal Japanese tax consequences
relating to an investment in our shares or ADSs. This summary applies only to persons or entities which are non-residents of Japan and to non-Japanese corporations without a permanent establishment in Japan to which the relevant income is
attributable.



Generally, Japanese withholding tax will apply
to dividends paid by us to a non-resident of Japan or a non-Japanese corporation. In general, no Japanese tax is payable on stock splits.



Under the Treaty, as currently in force after July 1, 2004, the maximum rate of Japanese withholding tax which may be imposed on dividends paid to a
United States resident or corporation not having a permanent establishment, which is generally a fixed place of business for industrial or commercial activity, in Japan is limited to:



|(1) | 5% of the gross amount of the dividends if the beneficial owner is a company that owns directly or indirectly, on the date on which entitlement to the dividends is determined, at
least 10 % of the voting stock of the company paying the dividends; or
|--- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|(2) | 10 % of the gross amount of the dividends in all other cases.
|--- | -------------------------------------------------------------



Notwithstanding the above, Japanese withholding tax shall not be imposed on such dividends if the beneficial owner of the dividends is:



|(1) | a company that is a resident of the United States that has owned, directly or indirectly through one or more residents of either Japan or the United States, more than 50 % of the
voting stock of the company paying the dividends for the period of twelve months ending on the date on which entitlement to the dividends is determined and that satisfies other conditions; or
|--- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|(2) | a pension fund that is a resident of the United States, provided that such dividends are not derived from the carrying on of a business, directly or indirectly, by such pension
fund.
|--- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



For purposes of the Treaty, and Japanese
tax law, U.S. holders of ADRs will be treated as the beneficial owners of the shares underlying the ADSs evidenced by the ADRs.



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In the absence of any applicable tax treaty, convention or agreement reducing the maximum rate of
withholding tax, the rate of Japanese withholding tax applicable to dividends paid by Japanese corporations to a non-resident or non-Japanese corporation is 20%. Japan has entered into income tax treaties, conventions or agreements, whereby the 20%
withholding tax rate is reduced generally to 15% for portfolio investors. In addition to the United States, countries with which Japan has concluded such treaties, conventions or agreements include Australia, Belgium, Canada, Denmark, Finland,
France, Germany, Ireland, Italy, Luxembourg, The Netherlands, New Zealand, Norway, Singapore, Spain, Sweden, Switzerland and the United Kingdom.



You must file an application for reduced withholding with the Japanese tax authorities through taxpayer to claim the benefits of the reduced withholding
rate on dividends under the Treaty. The application must be filed on or before the day on which the dividend is paid. If you hold ADSs, two application forms must be filed through the depositary, one form before the dividend payment and the other
within eight months after our fiscal year in which the dividend is paid. To claim the reduced rate, you will need to file proof of:



| |  | taxpayer status;
|- |  | ----------------



| |  | residence; and
|- |  | --------------



| |  | beneficial ownership.
|- |  | ---------------------



The depositary may also require you to provide other information. If you do not submit an application for reduced withholding before a dividend is paid,
you may file a claim for refund of the excess tax with the Japanese tax authorities.



Under the Special Taxation Measures Law amended at March 31, 2003, the rate of withholding tax applicable to dividends paid to shareholders other than those holding 5% or more of the total number of issued shares, by
Japanese corporations listed on any Japanese stock exchange or whose shares are traded on the Japanese over-the-counter market, on and after April 1, 2003 is reduced to 15%. Additionally, the above dividends paid on and after April 1, 2003 are
applied to the privilege tax rate of 10%, from April 1, 2004 to March 31 and 7%, January 1, 2004 to March 31, 2008.



You will not have to pay any Japanese tax on a sale of our shares or ADSs. If you make a gift of our shares or die holding our shares, a person who
receives the shares as a gift or inherits the shares may have to pay Japanese gift or inheritance tax.



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UNITED STATES FEDERAL INCOME TAXATION



This section describes the material U.S. federal income taxation of the ownership of shares or ADSs by U.S. Holders, as
defined below. It applies to you only if you hold your shares or ADSs as capital assets for tax purposes.



This section is based on the Internal Revenue Code of 1986, as amended (the Code), its legislative history, existing and proposed regulations,
published rulings and court decisions, all as currently in effect, as well as on the Treaty. These laws are subject to change, possibly on a retroactive basis. In addition, this section is based in part upon the representations of the Depositary and
the assumption that each obligation in the Deposit Agreement and any related agreement will be performed in accordance with its terms.



For purposes of the Treaty and the Code, U.S. holders of ADRs will be treated as the owners of the shares underlying the ADSs evidenced by the ADRs.
Exchanges of shares for ADRs, and ADRs for shares, generally will not be subject to U.S. federal income tax. For purposes of this discussion, you are a U.S. holder if you are a beneficial owner of shares or ADSs and you are for United States federal
income tax purposes (i) a citizen or resident of the United States, (ii) a domestic corporation, (iii) an estate whose income is subject to United States federal income tax regardless of its source, (iv) a trust if a United States court can exercise
primary supervision over the trusts administration and one or more United States persons are authorized to control all substantial decisions of the trust; (v) you do not maintain a permanent establishment or fixed base in Japan to which shares
or ADSs are attributable and through which you carry on or have carried on business (or in the case of an individual, performs or has performed independent personal services) and (vi) you are not otherwise ineligible for benefits under the Treaty
with respect to income and gain from the shares or ADSs.



This
section does not apply to you if you are a member of a special class of holders subject to special rules, including a dealer in securities, a trader in securities that elects to use a mark-to-market method of accounting for your securities holdings,
a tax-exempt organization, a life insurance company, a person liable for alternative minimum tax, a person that actually or constructively owns 10% or more of the voting stock of Trend Micro, a person that holds shares or ADSs as part of a straddle
or a hedging or conversion transaction, or a U.S. holder whose functional currency is not the U.S. dollar.



This summary is not a comprehensive description of all the tax considerations that may be relevant with respect to your shares or ADSs. You should consult
your own tax advisor regarding the U.S. federal, state and local and other tax consequences of owning and disposing of shares and ADSs in your particular circumstances.



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Taxation of Dividends.



Under the U.S. federal income tax laws, and subject to the passive foreign investment company (PFIC) rules discussed below, if you are a
U.S. holder, the gross amount of any dividend that Trend Micro pays out of its current or accumulated earnings and profits (as determined for U.S. federal income tax purposes) is subject to United States federal income taxation. You must include any
Japanese tax withheld from the dividend payment in this gross amount even though you do not in fact receive it. Dividends paid to a noncorporate U.S. holder in taxable years beginning before January 1, 2009 that constitute qualified dividend income
will be taxable to such holder at a maximum tax rate of 15% provided that the noncorporate U.S. holder holds the shares or ADSs for more than 60 days during the 121-day period beginning 60 days before the ex-dividend date and meets other holding
period requirements. Dividends that Trend Micro pays with respect to the shares or ADSs will generally be qualified dividend income.



The dividend is taxable to you when you, in the case of shares, or the Depositary, in the case of ADSs, receive the dividend, actually or constructively.
The dividend will not be eligible for the dividends-received deduction generally allowed to U.S. corporations in respect of dividends received from other U.S. corporations. The amount of the dividend distribution that you must include in your income
as a U.S. holder will be the U.S. dollar value of the Japanese yen payments made, determined at the spot Japanese yen/U.S. dollar rate on the date of the dividend distribution, regardless of whether the payment is in fact converted into U.S.
dollars. Generally, any gain or loss resulting from currency exchange fluctuations during the period from the date you include the dividend payment in income to the date you convert the payment into U.S. dollars will be treated as ordinary income or
loss and will not be eligible for the special tax rate applicable to qualified dividend income. The gain or loss generally will be income or loss from sources within the U.S. for foreign tax credit limitation purposes. Distributions in excess of
current and accumulated earnings and profits, as determined for U.S. federal income tax purposes, will be treated as a non-taxable return of capital to the extent of your basis in the shares or ADSs and thereafter as capital gain.



Subject to certain limitations, the Japanese tax withheld in accordance with
the Treaty and paid over to Japan will be creditable against your United States federal income tax liability. Special rules apply in determining the foreign tax credit limitation with respect to dividends that are subject to the maximum 15% tax
rate. To the extent a refund of the tax withheld is available to you under Japanese law or under the Treaty, the amount of tax withheld that is refundable will not be eligible for credit against your United States federal income tax liability.
Please see Japanese Taxation, above, for the procedures for obtaining a reduced rate of withholding under a treaty or a tax refund.



Dividends will be income from sources outside the United States, but dividends paid in taxable years beginning before January 1, 2007 generally will be
passive or financial services income and dividends paid in taxable years beginning after December 31, 2006 will, depending on your circumstances, be passive or general income which is, in either case,
treated separately from other types of income for purposes of computing the foreign tax credit allowable to you.



Distributions of additional shares to you with respect to shares or ADSs that are made as part of a pro rata distribution to all shareholders of Trend
Micro generally will not be subject to United States federal income tax.



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Taxation of Capital Gains



Subject to the PFIC rules discussed below, if you are a U.S. holder and you sell or otherwise dispose of your shares or
ADSs, you will recognize capital gain or loss for U.S. federal income tax purposes equal to the difference between the U.S. dollar value of the amount that you realize and your tax basis, determined in U.S. dollars, in your shares or ADSs. Capital
gain of a noncorporate U.S. holder that is recognized before January 1, 2009 will generally be taxed at a maximum rate of 15% where the holder has a holding period greater than one year. The gain or loss will generally be income or loss from sources
within the U.S. for foreign tax credit limitation purposes.



PFIC Rules



We believe that shares and ADSs should not be treated as
shares of a PFIC for U.S. federal income tax purposes, but this conclusion is a factual determination that is made annually and thus may be subject to change. Moreover, this determination will be based in part on circumstances that are beyond our
control, such as, for example, our market capitalization. If we were to be treated as a PFIC, unless a U.S. holder elects to be taxed annually on a mark-to-market basis with respect to the shares or ADSs, gain realized on the sale or other
disposition of your shares or ADSs would in general not be treated as capital gain. Instead, if you are a U.S. holder, you would be treated as if you had realized such gain and certain excess distributions ratably over your holding
period for the shares or ADSs and would be taxed at the highest tax rate in effect for each such year to which the gain was allocated, together with an interest charge in respect of the tax attributable to each such year. With certain exceptions,
shares or ADSs will be treated as stock in a PFIC if Trend Micro were a PFIC at any time during your holding period in your shares or ADSs. Dividends that a U.S. holder receives from Trend Micro will not be eligible for the special tax rates
applicable to qualified dividend income if Trend Micro is a PFIC either in the taxable year of the distribution or the preceding taxable year, but instead will be taxable at rates applicable to ordinary income.



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F. Dividends and Paying Agents.



Not applicable



G. Statements by Experts.



Not applicable



H. Documents on Display.



We are subject to the informational requirements of the Securities Exchange Act of 1934 and, in accordance therewith, we file periodic reports and other information with the Securities and Exchange Commission. These reports and other
information can be inspected at the public reference room at the Securities and Exchange Commission at 450 Fifth Street, N.W., Washington, D.C. 20549. You can also obtain copies of such material by mail from the public reference room of the
Securities and Exchange Commission at prescribed fees. You may obtain information on the operation of the Securities and Exchange public reference room by calling the Securities and Exchange Commission in the United States at 1-800-SEC-0330. The
Securities and Exchange Commission also maintains a web site at www.sec.gov that contains reports, proxy statements and other information regarding registrants that file electronically with the Securities and Exchange Commission. As a foreign
private issuer, we are exempt from the rules under the Securities Exchange Act of 1934 prescribing the furnishing and content of proxy statements to shareholders.



I. Subsidiary Information.



Not applicable



Item 11. Quantitative and Qualitative Disclosures About Market Risk.



As discussed in Note 17 to the consolidated financial statements, we have a policy of not utilizing any derivative financial instruments with off-balance
sheet risk. The financial instruments other than derivatives as of December 31, 2004 were cash and cash equivalents, time deposits, marketable debt and equity securities, notes and accounts receivable, trade, notes and account payable, trade and
long-term debt. Among these financial instruments, we do not have significant market sensitive instruments with significant exposure to market risk. When we acquired ipTrend, we acquired two derivative instruments which ipTrend held. One of those
instruments has expired during the fiscal year 2004 and the other has also expired at January 2005. At the expiration, we did not suffer any material losses from those instruments. However, this has not altered our policy of not utilizing derivative
financial statements.



Item 12. Description of Securities Other than Equity
Securities.



Not applicable



- 87 -



---

PART II



Item 13. Defaults, Dividend Arrearages and Delinquencies.



None



Item 14. Material Modifications to the Rights of Security Holders and Use of Proceeds.



None



Item 15. Controls and Procedures.



Our management, with the participation of our Chief Executive Officer and Chief Financial Officer, evaluated the effectiveness of our disclosure controls and procedures (as defined in Rules 13a-15(e) and 15d-15(e)
under the U.S. Securities Exchange Act of 1934) as of December 31, 2004. Based on that evaluation, our Chief Executive Officer and Chief Financial Officer concluded that the disclosure controls and procedures were effective as of that date.



No change in our internal control over financial reporting (as
defined in Rules 13a-15(f) under the U.S. Securities Exchange Act of 1934) occurred during the year ended December 31, 2004 that has materially affected, or is reasonably likely to materially affect, our internal control over financial reporting.



- 88 -



---

Item 16A. Audit Committee Financial Expert.



Our Board of Corporate Auditors has determined that we do not have an audit committee financial expert as
defined in Item 16A of Form 20-F serving on the Board of Corporate Auditors. We believe that the combined knowledge, skills and experience of the Board of Corporate Auditors enables them, as a group, to act effectively in the fulfillment of their
tasks and responsibilities, including those under the Sarbanes-Oxley Act of 2002. In addition, the Corporate Auditors have the power and authority to engage outside experts as they deem appropriate to provide them with advice on matters related to
their responsibilities.



Item 16B. Code of Ethics.



We have adopted a code of conduct applicable to all of our employees,
including our Chief Executive Officer, Chief Financial Officer, Group Controller and other senior finance officers. A copy of our code of conduct is attached as an exhibit to this report.



Item 16C. Principal Accountant Fees and Services.



The following table sets forth the aggregate fees billed or to be billed to us by PricewaterhouseCoopers, our principal
accountant, for the following categories of fees from each of the last two fiscal years.



|                      |  |                      |        |             |       |       
|--------------------- |  | -------------------- | ------ | ----------- | ----- | ------
|                      |  | Fiscal 2003          |        | Fiscal 2004
|                      |  | (in millions of yen)
|Audit fees            |  | (Yen)                | 83.88  |             | (Yen) | 95.36 
|Audit-related fees(1) |  |                      | 0.01   |             |       | 5.00  
|Tax fees(2)           |  |                      | 37.81  |             |       | 28.82 
|All Other fees(3)     |  |                      | 1.02   |             |       | 1.29  
|                      |  |                      |        |             |       |       
|Total Fees            |  | (Yen)                | 122.71 |             | (Yen) | 130.47
|                      |  |                      |        |             |       |       



|    |  |                                                                                                                         
|--- |  | ------------------------------------------------------------------------------------------------------------------------
|(1) |  | Audit-related fees include fees relating to advisory services relating to Section 404 of the Sarbanes-Oxley Act.        
|(2) |  | Tax fees consist of fees relating to tax compliance, tax advice and tax planning services.                              
|(3) |  | All Other fees include fees relating to lectures to the Board of Corporate Auditors about U.S. GAAP and SEC regulations.



Our Board of Corporate
Auditors has adopted guidelines for pre-approving all audit and non-audit services performed by our principal accountant and its affiliates in accordance with Rule 2-01(c)(7)(i)(A) under Regulation S-X. Under those guidelines, the Board of Corporate
Auditors must pre-approve individual audit and non-audit services before they are provided by our principal accountant and its affiliates to us. Those guidelines also describe prohibited services that may never be provided. Our Board of Corporate
Auditors does not use the provisions of Rule 2-01(c)(7)(i)(B) under Regulation S-X for pre-approving audit and non-audit services.



None of the services described above in this Item 16C were waived from the pre-approval requirements pursuant to Rule 2-01(c)(7)(i)(C) of Regulation S-X.



Item 16D. Exemptions from the Listing Standards for Audit Committees.



Not applicable



- 89 -



---

Item 16E. Purchases of Equity Securities by the Issuer and Affiliated Purchasers.



The following table sets forth certain information with respect to purchases we made of our
shares during the year ended December 31, 2004.



|                                  |  |                           |  |                               |  |                                                                                    |  |                                                                               
|--------------------------------- |  | ------------------------- |  | ----------------------------- |  | ---------------------------------------------------------------------------------- |  | ------------------------------------------------------------------------------
|Period                            |  | (a) Total Number ofShares |  | (b)Average PricePaid perShare |  | (c) Total Number of SharesPurchased as Part ofPublicly Announced Plans or
Programs |  | (d)Maximum Number ofShares that May Yet BePurchased Under thePlans or Programs
|January 1 to January 31, 2004     |  | 15,443  (Shares)          |  | 3,107  (Yen)                  |  | - (Shares)                                                                         |  | - (Shares)                                                                    
|                                  |  |                           |  |                              
|February 1 to February 29, 2004   |  | 10,507  (Shares)          |  | 3,096  (Yen)                  |  | - (Shares)                                                                         |  | - (Shares)                                                                    
|                                  |  |                           |  |                              
|March 1 to March 31, 2004         |  | 82,077  (Shares)          |  | 3,519  (Yen)                  |  | - (Shares)                                                                         |  | - (Shares)                                                                    
|                                  |  |                           |  |                              
|April 1 to April 30, 2004         |  | 68,042  (Shares)          |  | 4,161  (Yen)                  |  | - (Shares)                                                                         |  | - (Shares)                                                                    
|                                  |  |                           |  |                              
|May 1 to May 31, 2004             |  | 282,630  (Shares)         |  | 3,887  (Yen)                  |  | 263,500  (Shares)                                                                  |  | 736,500  (Shares)                                                             
|                                  |  |                           |  |                              
|June 1 to June 30, 2004           |  | 209,508  (Shares)         |  | 4,131  (Yen)                  |  | 111,500  (Shares)                                                                  |  | - (Shares)                                                                    
|                                  |  |                           |  |                              
|July 1 to July 31, 2004           |  | 48,584  (Shares)          |  | 4,571  (Yen)                  |  | - (Shares)                                                                         |  | - (Shares)                                                                    
|                                  |  |                           |  |                              
|August 1 to August 31,2004        |  | 29,716  (Shares)          |  | 4,440  (Yen)                  |  | - (Shares)                                                                         |  | - (Shares)                                                                    
|                                  |  |                           |  |                              
|September 1 to September 30, 2004 |  | 61,042  (Shares)          |  | 4,917  (Yen)                  |  | - (Shares)                                                                         |  | - (Shares)                                                                    
|                                  |  |                           |  |                              
|October 1 to October 31, 2004     |  | 46,264  (Shares)          |  | 5,005  (Yen)                  |  | - (Shares)                                                                         |  | - (Shares)                                                                    
|                                  |  |                           |  |                              
|November 1 to November 30, 2004   |  | 41,980  (Shares)          |  | 5,300  (Yen)                  |  | - (Shares)                                                                         |  | - (Shares)                                                                    
|                                  |  |                           |  |                              
|December 1 to December 31, 2004   |  | 6,499  (Shares)           |  | 5,332  (Yen)                  |  | - (Shares)                                                                         |  | - (Shares)                                                                    
|                                  |  |                           |  |                              
|Total                             |  | 902,292  (Shares)         |  | 4,167  (Yen)                  |  | 375,000  (Shares)                                                                  |  | - (Shares)                                                                    



Footnotes:



|a. | The date each plan or program was announced: May 19th, 2004.
|-- | ------------------------------------------------------------

|b. | The share amount approved: 1,000,000 shares.
|-- | --------------------------------------------

|c. | The expiration date of each plan or program: June 23rd, 2004.
|-- | -------------------------------------------------------------

|d. | Each plan or program that expired during the period covered by the table: The plan referred to in note a. above.
|-- | ----------------------------------------------------------------------------------------------------------------

|e. | Each plan or program the issuer has determined to terminate prior to expiration, or under which the issuer does not intend to make further purchases: None.
|-- | -----------------------------------------------------------------------------------------------------------------------------------------------------------



- 90 -



---

PART III



Item 17. Financial Statements.



In lieu of responding to this item, we have responded to Item 18 of this annual report.



Item 18. Financial Statements.



The information required by this item is set forth beginning on page F-2 of this annual report.



Item 19. Exhibits.



Exhibits



|              |       |  |                                                                                                                                                                                                                
|------------- | ----- |  | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|ExhibitNumber |       |  | Document                                                                                                                                                                                                       
|              |      
|1.1           |       |  | Articles of Incorporation of Trend Micro (English translation)                                                                                                                                                 
|              |      
|1.2           | *     |  | Share Handling Regulations of Trend Micro, as amended (English translation)                                                                                                                                    
|              |      
|1.3           |       |  | Regulations of the Board of Directors of Trend Micro, as amended (English translation)                                                                                                                         
|              |      
|1.4           | *     |  | Regulations of the Board of Corporate Auditors of Trend Micro, as amended (English translation)                                                                                                                
|              |      
|2.1           | **    |  | Specimen Common Stock Certificates                                                                                                                                                                             
|              |      
|2.2           | ***   |  | Form of Deposit Agreement among Trend Micro, The Bank of New York as depositary and all owners and holders from time to time of American Depositary Receipts, including the form of American
Depositary Receipt
|              |      
|4.1           | ****+ |  | Basic Agreement on Continual Sale and Purchase of Goods dated October 1, 1999, between Trend Micro Incorporated and SOFTBANK BB (formerly known as SOFTBANK COMMERCE CORP.), and related
agreements            
|              |      
|4.2           |       |  | Limited Liability Agreement dated April 21, 2005, between Trend Micro Incorporated and Hirotaka Takeuchi                                                                                                       
|              |      
|8.1           |       |  | List of subsidiaries of Trend Micro                                                                                                                                                                            
|              |      
|11.1          | *     |  | Code of Conduct                                                                                                                                                                                                
|              |      
|12.1          |       |  | Certification of the principal executive officer of Trend Micro required by Rule 13a-14(a)                                                                                                                     
|              |      
|12.2          |       |  | Certification of the principal financial officer of Trend Micro required by Rule 13a-14(a)                                                                                                                     
|              |      
|13.1          |       |  | Certification of the chief executive officer required by Rule 13a-14(b) and Section 1350 of Chapter 63 of Title 18 of the United States Code                                                                   
|              |      
|13.2          |       |  | Certification of the chief financial officer required by Rule 13a-14(b) and Section 1350 of Chapter 63 of Title 18 of the United States Code                                                                   
|              |      
|15.1          |       |  | Consent of Independent Registered Public Accounting Firm                                                                                                                                                       

---

|* | Incorporated by reference to the corresponding exhibit to our annual report of Form 20-F (File No. 333-10486) filed on June 1, 2004.
|- | ------------------------------------------------------------------------------------------------------------------------------------

|** | Incorporated by reference to the corresponding exhibit to our annual report on Form 20-F (File No. 333-10486) filed on June 29, 2001.
|-- | -------------------------------------------------------------------------------------------------------------------------------------

|*** | Incorporated by reference to the corresponding exhibit to our Amendment No. 1 to Registration Statement on Form F-6 (File No. 333-10492) filed on June 22, 2001.
|--- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------

|**** | Incorporated by reference to the corresponding exhibit to our Amendment No. 2 to the Form F-1 Registration Statement (File No. 333-10568) filed on May 22, 2000.
|---- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------

|+ | Confidential treatment granted for a portion of these documents.
|- | ----------------------------------------------------------------



We have not included as exhibits certain instruments with respect to our long-term debt, the amount of debt authorized under each of which does not exceed
10% of our total assets, and we agree to furnish a copy of any such instrument to the Securities and Exchange Commission upon request.



- 91 -



---

TREND MICRO INCORPORATED

AND CONSOLIDATED SUBSIDIARIES



INDEX TO CONSOLIDATED FINANCIAL STATEMENTS



|                                                                                                     |  |     
|---------------------------------------------------------------------------------------------------- |  | ----
|                                                                                                     |  | Page
|Report of independent registered public accounting firm.                                             |  | F-2 
|                                                                                                     | 
|Consolidated balance sheets at December 31, 2003 and 2004.                                           |  | F-3 
|                                                                                                     | 
|Consolidated statements of income for the years ended December 31, 2002, 2003 and 2004               |  | F-5 
|                                                                                                     | 
|Consolidated statements of comprehensive income for the years ended December 31, 2002, 2003 and 2004 |  | F-6 
|                                                                                                     | 
|Consolidated statements of shareholders equity for the years ended December 31, 2002, 2003 and 2004 |  | F-7 
|                                                                                                     | 
|Consolidated statements of cash flows for the years ended December 31, 2002, 2003 and 2004           |  | F-9 
|                                                                                                     | 
|Notes to consolidated financial statements                                                           |  | F-11
|                                                                                                     | 
|Financial statement schedule for the years ended December 31, 2002, 2003 and 2004:                   |  |     
|                                                                                                     | 
|Schedule IIValuation and qualifying accounts.                                                       |  | F-36



All other schedules are omitted
because they are not applicable or the required information is shown in the financial statements or the notes thereto.



F-1



---

REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM



To the Shareholders and Board of Directors of

Trend Micro Kabushiki Kaisha

(Trend Micro Incorporated):



In our
opinion, the consolidated financial statements listed in the accompanying index present fairly, in all material respects, the financial position of Trend Micro Incorporated and its subsidiaries at December 31, 2003 and 2004, and the results of their
operations and their cash flows for each of the three years in the period ended December 31, 2004 in conformity with accounting principles generally accepted in the United States of America. In addition, in our opinion, the financial statement
schedule listed in the accompanying index presents fairly, in all material respects, the information set forth therein when read in conjunction with the related consolidated financial statements. These financial statements and financial statement
schedule are the responsibility of the Companys management. Our responsibility is to express an opinion on these financial statements and financial statement schedule based on our audits. We conducted our audits of these statements in
accordance with the standards of the Public Company Accounting Oversight Board (United States). Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of material
misstatement. An audit includes examining, on a test basis, evidence supporting the amounts and disclosures in the financial statements, assessing the accounting principles used and significant estimates made by management, and evaluating the
overall financial statement presentation. We believe that our audits provide a reasonable basis for our opinion.



/s/ ChuoAoyama PricewaterhouseCoopers



Tokyo, Japan

March 25, 2005, except for Note 23,

which is as of June 10, 2005



F-2



---

TREND MICRO INCORPORATED

AND CONSOLIDATED SUBSIDIARIES



CONSOLIDATED BALANCE SHEETS



|                                                                                                                                                                          |  |                  |  |                           |  |      |          
|------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |  | ---------------- |  | ------------------------- |  | ---- | ---------
|                                                                                                                                                                          |  | December 31,     |  | December 31,             
|                                                                                                                                                                          |  | 2003             |  | 2004                      |  | 2004
|                                                                                                                                                                          |  | Thousands of yen |  | Thousands of U.S. dollars
|ASSETS                                                                                                                                                                    |  |                  |  |                           |  |      |          
|Current assets:                                                                                                                                                           |  |                  |  |                           |  |      |          
|Cash and cash equivalents                                                                                                                                                 |  | (Yen)46,718,940  |  | (Yen)52,908,357           |  | $    | 513,673  
|Time deposits                                                                                                                                                             |  | 440,323          |  | 383,276                   |  |      | 3,721    
|Marketable securities                                                                                                                                                     |  | 4,769,935        |  | 15,288,575                |  |      | 148,433  
|Notes and accounts receivable, tradeless allowance for doubtful accounts and sales returns of (Yen) 1,023,734 and (Yen) 864,938 ($)
8,397 in 2003 and 2004, respectively |  | 11,681,457       |  | 15,245,213                |  |      | 148,012  
|Inventories                                                                                                                                                               |  | 77,950           |  | 201,243                   |  |      | 1,954    
|Deferred income taxes                                                                                                                                                     |  | 4,894,387        |  | 6,224,972                 |  |      | 60,437   
|Prepaid expenses and other current assets                                                                                                                                 |  | 1,397,821        |  | 1,560,058                 |  |      | 15,146   
|                                                                                                                                                                          |  |                  |  |                           |  |      |          
|Total current assets                                                                                                                                                      |  | 69,980,813       |  | 91,811,694                |  |      | 891,376  
|                                                                                                                                                                          |  |                  |  |                           |  |      |          
|Investments and other assets:                                                                                                                                             |  |                  |  |                           |  |      |          
|Securities investments                                                                                                                                                    |  | 6,107,872        |  | 9,831,913                 |  |      | 95,455   
|Investment in and advances to affiliate companies                                                                                                                         |  | 119,591          |  | 175,281                   |  |      | 1,702    
|Software development costs                                                                                                                                                |  | 505,616          |  | 438,464                   |  |      | 4,257    
|Other intangibles                                                                                                                                                         |  | 311,756          |  | 296,368                   |  |      | 2,877    
|Deferred income taxes                                                                                                                                                     |  | 1,806,760        |  | 1,695,771                 |  |      | 16,464   
|Other                                                                                                                                                                     |  | 734,533          |  | 636,009                   |  |      | 6,175    
|                                                                                                                                                                          |  |                  |  |                           |  |      |          
|Total investments and other assets                                                                                                                                        |  | 9,586,128        |  | 13,073,806                |  |      | 126,930  
|                                                                                                                                                                          |  |                  |  |                           |  |      |          
|Property and equipment:                                                                                                                                                   |  |                  |  |                           |  |      |          
|Office furniture and equipment                                                                                                                                            |  | 2,823,506        |  | 3,323,526                 |  |      | 32,267   
|Other properties                                                                                                                                                          |  | 1,038,524        |  | 1,165,173                 |  |      | 11,313   
|                                                                                                                                                                          |  |                  |  |                           |  |      |          
|                                                                                                                                                                          |  | 3,862,030        |  | 4,488,699                 |  |      | 43,580   
|Less: Accumulated depreciation                                                                                                                                            |  | (2,157,884)      |  | (2,640,288)               |  |      | (25,634) 
|                                                                                                                                                                          |  |                  |  |                           |  |      |          
|Total property and equipment                                                                                                                                              |  | 1,704,146        |  | 1,848,411                 |  |      | 17,946   
|                                                                                                                                                                          |  |                  |  |                           |  |      |          
|Total assets                                                                                                                                                              |  | (Yen)81,271,087  |  | (Yen)106,733,911          |  | $    | 1,036,252
|                                                                                                                                                                          |  |                  |  |                           |  |      |          



The accompanying notes
are an integral part of these statements.



F-3



---

TREND MICRO INCORPORATED

AND CONSOLIDATED SUBSIDIARIES



CONSOLIDATED BALANCE SHEETS



|                                                                       |  |                  |  |                           |             |      |   |          
|---------------------------------------------------------------------- |  | ---------------- |  | ------------------------- | ----------- | ---- | - | ---------
|                                                                       |  | December 31,     |  | December 31,             
|                                                                       |  | 2003             |  | 2004                      |             | 2004
|                                                                       |  | Thousands of yen |  | Thousands of U.S. dollars
|LIABILITIES AND SHAREHOLDERS EQUITY                                   |  |                  |  |                           |             |      |   |          
|Current liabilities:                                                   |  |                  |  |                           |             |      |   |          
|Current portion of long-term debt                                      |  | (Yen)6,500,000   |  | (Yen)                     |            |      | $ |         
|Notes payable, trade                                                   |  | 96,204           |  |                           | 88,087      |      |   | 855      
|Accounts payable, trade                                                |  | 899,508          |  |                           | 1,271,067   |      |   | 12,340   
|Accounts payable, other                                                |  | 1,326,244        |  |                           | 2,699,762   |      |   | 26,211   
|Withholding income taxes                                               |  | 490,315          |  |                           | 882,693     |      |   | 8,570    
|Accrued expenses                                                       |  | 1,984,175        |  |                           | 2,143,694   |      |   | 20,813   
|Accrued income and other taxes                                         |  | 4,280,797        |  |                           | 7,192,085   |      |   | 69,826   
|Deferred revenue                                                       |  | 17,486,298       |  |                           | 24,634,662  |      |   | 239,172  
|Other                                                                  |  | 557,050          |  |                           | 651,503     |      |   | 6,325    
|                                                                       |  |                  |  |                           |             |      |   |          
|Total current liabilities                                              |  | 33,620,591       |  |                           | 39,563,553  |      |   | 384,112  
|                                                                       |  |                  |  |                           |             |      |   |          
|Long-term liabilities:                                                 |  |                  |  |                           |             |      |   |          
|Deferred revenue                                                       |  | 3,017,105        |  |                           | 3,268,892   |      |   | 31,737   
|Accrued pension and severance costs                                    |  | 487,409          |  |                           | 656,041     |      |   | 6,369    
|Other                                                                  |  | 194,185          |  |                           | 70,665      |      |   | 686      
|                                                                       |  |                  |  |                           |             |      |   |          
|Total long-term liabilities                                            |  | 3,698,699        |  |                           | 3,995,598   |      |   | 38,792   
|                                                                       |  |                  |  |                           |             |      |   |          
|Shareholders equity:                                                  |  |                  |  |                           |             |      |   |          
|Common stock                                                           |  |                  |  |                           |             |      |   |          
|Authorized                                                             |  |                  |  |                           |             |      |   |          
|2003 and 2004 250,000,000 shares (no par value)                       |  |                  |  |                           |             |      |   |          
|Issued                                                                 |  |                  |  |                           |             |      |   |          
|2003 132,620,100 shares                                               |  | 7,396,194        |  |                           |             |      |   |          
|2004 135,755,872 shares                                               |  |                  |  |                           | 11,426,977  |      |   | 110,942  
|Additional paid-in capital                                             |  | 13,165,881       |  |                           | 17,359,335  |      |   | 168,537  
|Retained earnings                                                      |  | 28,236,466       |  |                           | 42,165,026  |      |   | 409,369  
|Accumulated other comprehensive income                                |  |                  |  |                           |             |      |   |          
|Net unrealized gain (loss) on debt and equity securities               |  | 70,965           |  |                           | 284,348     |      |   | 2,761    
|Cumulative translation adjustments                                     |  | (500,946)        |  |                           | (606,463)   |      |   | (5,888)  
|                                                                       |  |                  |  |                           |             |      |   |          
|                                                                       |  | (429,981)        |  |                           | (322,115)   |      |   | (3,127)  
|                                                                       |  |                  |  |                           |             |      |   |          
|Treasury stock, at cost (2003-1,958,647 shares; 2004-2,588,439 shares) |  | (4,416,763)      |  |                           | (7,454,463) |      |   | (72,373) 
|                                                                       |  |                  |  |                           |             |      |   |          
|Total shareholders equity                                             |  | 43,951,797       |  |                           | 63,174,760  |      |   | 613,348  
|                                                                       |  |                  |  |                           |             |      |   |          
|Commitments and contingent liabilities                                 |  |                  |  |                           |             |      |   |          
|                                                                       |  |                  | 
|Total liabilities and shareholders equity                             |  | (Yen)81,271,087  |  | (Yen)                     | 106,733,911 |      | $ | 1,036,252
|                                                                       |  |                  |  |                           |             |      |   |          



The accompany notes are
an integral part of these statements.



F-4



---

TREND MICRO INCORPORATED

AND CONSOLIDATED SUBSIDIARIES



CONSOLIDATED STATEMENTS OF INCOME



|                                                         |  |                          |   |  |                           |   |  |                 |   |  |              |         |  
|-------------------------------------------------------- |  | ------------------------ | - |  | ------------------------- | - |  | --------------- | - |  | ------------ | ------- | -
|                                                         |  | Years ended December 31, |   |  | Year endedDecember 31,    |  
|                                                         |  | 2002                     |   |  | 2003                      |   |  | 2004            |   |  | 2004         |        
|                                                         |  | Thousands of yen         |   |  | Thousands of U.S. dollars |  
|Net sales                                                |  | (Yen)42,979,637          |   |  | (Yen)48,088,347           |   |  | (Yen)62,049,254 |   |  | $            | 602,420 |  
|Cost of sales                                            |  | 2,353,862                |   |  | 3,168,467                 |   |  | 3,236,499       |   |  |              | 31,422  |  
|                                                         |  |                          |   |  |                           |   |  |                 |   |  |              |         |  
|Gross profit                                             |  | 40,625,775               |   |  | 44,919,880                |   |  | 58,812,755      |   |  |              | 570,998 |  
|                                                         |  |                          |   |  |                           |   |  |                 |   |  |              |         |  
|Operating expenses:                                      |  |                          |   |  |                           |   |  |                 |   |  |              |         |  
|Selling                                                  |  | 15,051,702               |   |  | 15,360,532                |   |  | 16,009,409      |   |  |              | 155,431 |  
|Research and development and maintenance                 |  | 3,505,565                |   |  | 3,919,024                 |   |  | 4,858,259       |   |  |              | 47,168  |  
|Customer Support                                         |  | 3,857,957                |   |  | 4,830,660                 |   |  | 5,723,426       |   |  |              | 55,567  |  
|General and administrative                               |  | 4,344,433                |   |  | 5,656,168                 |   |  | 6,143,985       |   |  |              | 59,651  |  
|                                                         |  |                          |   |  |                           |   |  |                 |   |  |              |         |  
|Total operating expenses                                 |  | 26,759,657               |   |  | 29,766,384                |   |  | 32,735,079      |   |  |              | 317,817 |  
|                                                         |  |                          |   |  |                           |   |  |                 |   |  |              |         |  
|Operating income                                         |  | 13,866,118               |   |  | 15,153,496                |   |  | 26,077,676      |   |  |              | 253,181 |  
|                                                         |  |                          |   |  |                           |   |  |                 |   |  |              |         |  
|Other income (expenses):                                 |  |                          |   |  |                           |   |  |                 |   |  |              |         |  
|Interest income                                          |  | 410,245                  |   |  | 412,635                   |   |  | 451,217         |   |  |              | 4,381   |  
|Interest expense                                         |  | (277,328                 | ) |  | (173,830                  | ) |  | (87,464         | ) |  |              | (849    | )
|Gain (Loss) on sales of marketable securities            |  | (259,293                 | ) |  | (65,259                   | ) |  | 101,199         |   |  |              | 983     |  
|Impairment loss of securities investments                |  | (804,661                 | ) |  | (7,360                    | ) |  |                |   |  |              |        |  
|Foreign exchange gain (loss), net                        |  | 52,424                   |   |  | 120,650                   |   |  | (183,292        | ) |  |              | (1,780  | )
|Other income (expense), net                              |  | 110,778                  |   |  | (111,345                  | ) |  | (34,350         | ) |  |              | (334    | )
|                                                         |  |                          |   |  |                           |   |  |                 |   |  |              |         |  
|Total other income (expenses)                            |  | (767,835                 | ) |  | 175,491                   |   |  | 247,310         |   |  |              | 2,401   |  
|                                                         |  |                          |   |  |                           |   |  |                 |   |  |              |         |  
|Net income before tax                                    |  | 13,098,283               |   |  | 15,328,987                |   |  | 26,324,986      |   |  |              | 255,582 |  
|                                                         |  |                          |   |  |                           |   |  |                 |   |  |              |         |  
|Income taxes:                                            |  |                          |   |  |                           |   |  |                 |   |  |              |         |  
|Current                                                  |  | 6,938,456                |   |  | 7,437,576                 |   |  | 11,893,659      |   |  |              | 115,472 |  
|Deferred                                                 |  | (1,542,750               | ) |  | (1,334,998                | ) |  | (1,390,387      | ) |  |              | (13,499 | )
|                                                         |  |                          |   |  |                           |   |  |                 |   |  |              |         |  
|                                                         |  | 5,395,706                |   |  | 6,102,578                 |   |  | 10,503,272      |   |  |              | 101,973 |  
|                                                         |  |                          |   |  |                           |   |  |                 |   |  |              |         |  
|Income before equity in earnings of affiliated companies |  | 7,702,577                |   |  | 9,226,409                 |   |  | 15,821,714      |   |  |              | 153,609 |  
|Equity in earnings of affiliated companies               |  | 11,189                   |   |  | 23,623                    |   |  | 53,122          |   |  |              | 516     |  
|                                                         |  |                          |   |  |                           |   |  |                 |   |  |              |         |  
|Net income                                               |  | (Yen)7,713,766           |   |  | (Yen)9,250,032            |   |  | (Yen)15,874,836 |   |  | $            | 154,125 |  
|                                                         |  |                          |   |  |                           |   |  |                 |   |  |              |         |  
|                                                         |  |                          |   | 
|                                                         |  | Yen                      |   |  | Yen                       |   |  | Yen             |   |  | U.S. dollars |        
|Per share data:                                          |  |                          |   |  |                           |   |  |                 |   |  |              |         |  
|Net income basic                                        |  | (Yen)58.39               |   |  | (Yen)70.11                |   |  | (Yen)120.64     |   |  | $            | 1.17    |  
|diluted                                                 |  | 58.22                    |   |  | 69.95                     |   |  | 118.59          |   |  |              | 1.15    |  
|Cash dividends                                           |  |                         |   |  |                          |   |  | 14.00           |   |  |              | 0.14    |  



The accompanying notes
are an integral part of these statements.



F-5



---

TREND MICRO INCORPORATED

AND CONSOLIDATED SUBSIDIARIES



CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME



|                                                                                      |  |                          |   |  |                          |   |  |                 |   |  |      |         |  
|------------------------------------------------------------------------------------- |  | ------------------------ | - |  | ------------------------ | - |  | --------------- | - |  | ---- | ------- | -
|                                                                                      |  | Years ended December 31, |   |  | Year ended December 31,  |  
|                                                                                      |  | 2002                     |   |  | 2003                     |   |  | 2004            |   |  | 2004 |        
|                                                                                      |  | Thousands of yen         |   |  | Thousands ofU.S. dollars |  
|Net income                                                                            |  | (Yen)7,713,766           |   |  | (Yen)9,250,032           |   |  | (Yen)15,874,836 |   |  | $    | 154,125 |  
|                                                                                      |  |                          |   |  |                          |   |  |                 |   |  |      |         |  
|Other comprehensive income (loss), before tax:                                        |  |                          |   |  |                          |   |  |                 |   |  |      |         |  
|Unrealized gains (losses) on debt and equity securities:                              |  |                          |   |  |                          |   |  |                 |   |  |      |         |  
|Unrealized holding gains (losses) arising during period                               |  | (191,661                 | ) |  | 135,323                  |   |  | 514,117         |   |  |      | 4,991   |  
|Less reclassification adjustment for (gains) losses included in net income            |  | 507,954                  |   |  | 132,701                  |   |  | (143,702        | ) |  |      | (1,395  | )
|                                                                                      |  |                          |   |  |                          |   |  |                 |   |  |      |         |  
|                                                                                      |  | 316,293                  |   |  | 268,024                  |   |  | 370,415         |   |  |      | 3,596   |  
|Foreign currency translation adjustments                                              |  | (563,794                 | ) |  | (786,025                 | ) |  | (105,517        | ) |  |      | (1,024  | )
|                                                                                      |  |                          |   |  |                          |   |  |                 |   |  |      |         |  
|Total                                                                                 |  | (247,501                 | ) |  | (518,001                 | ) |  | 264,898         |   |  |      | 2,572   |  
|Income tax expense related to unrealized gains (losses) on debt and equity securities |  | (89,690                  | ) |  | (113,182                 | ) |  | (157,032        | ) |  |      | (1,525  | )
|                                                                                      |  |                          |   |  |                          |   |  |                 |   |  |      |         |  
|Other comprehensive income (loss), net of tax                                         |  | (337,191)                |   |  | (631,183)                |   |  | 107,866         |   |  |      | 1,047   |  
|                                                                                      |  |                          |   |  |                          |   |  |                 |   |  |      |         |  
|Comprehensive income                                                                  |  | (Yen)7,376,575           |   |  | (Yen)8,618,849           |   |  | (Yen)15,982,702 |   |  | $    | 155,172 |  
|                                                                                      |  |                          |   |  |                          |   |  |                 |   |  |      |         |  



The accompanying notes
are an integral part of these statements.



F-6



---

TREND MICRO INCORPORATED

AND CONSOLIDATED SUBSIDIARIES



CONSOLIDATED STATEMENTS OF SHAREHOLDERS EQUITY



|                                                                                            |  |                          |  |                           |  |                |  |      |         
|------------------------------------------------------------------------------------------- |  | ------------------------ |  | ------------------------- |  | -------------- |  | ---- | --------
|                                                                                            |  | Years ended December 31, |  | Year ended December 31,  
|                                                                                            |  | 2002                     |  | 2003                      |  | 2004           |  | 2004
|                                                                                            |  | Thousands of yen         |  | Thousands of U.S. dollars
|Common stock:                                                                               |  |                          |  |                           |  |                |  |      |         
|Balance at beginning of year                                                                |  | (Yen)6,833,678           |  | (Yen)7,257,060            |  | (Yen)7,396,194 |  | $    | 71,808  
|Exercise of stock purchase warrants and stock acquisition rights                            |  | 423,382                  |  | 139,134                   |  | 4,030,783      |  |      | 39,134  
|                                                                                            |  |                          |  |                           |  |                |  |      |         
|Balance at end of year                                                                      |  | 7,257,060                |  | 7,396,194                 |  | 11,426,977     |  |      | 110,942 
|                                                                                            |  |                          |  |                           |  |                |  |      |         
|Additional paid-in capital:                                                                 |  |                          |  |                           |  |                |  |      |         
|Balance at beginning of year                                                                |  | 12,144,908               |  | 13,021,554                |  | 13,165,881     |  |      | 127,824 
|Tax benefit from exercise of non-qualified stock warrants                                   |  | 446,809                  |  | 233,277                   |  | 498,905        |  |      | 4,844   
|Tax recognition derived from elimination of reversed warrant related with stock option plan |  | 12,934                   |  | (228,085)                 |  | (312,708)      |  |      | (3,036) 
|Loss on sales of treasury stock, net of tax                                                 |  | (6,466)                  |  |                          |  | (22,941)       |  |      | (223)   
|Exercise of stock purchase warrants and stock acquisition rights                            |  | 423,369                  |  | 139,135                   |  | 4,030,198      |  |      | 39,128  
|                                                                                            |  |                          |  |                           |  |                |  |      |         
|Balance at end of year                                                                      |  | 13,021,554               |  | 13,165,881                |  | 17,359,335     |  |      | 168,537 
|                                                                                            |  |                          |  |                           |  |                |  |      |         
|Retained earnings:                                                                          |  |                          |  |                           |  |                |  |      |         
|Balance at beginning of year                                                                |  | 11,277,576               |  | 18,986,701                |  | 28,236,466     |  |      | 274,140 
|Net income                                                                                  |  | 7,713,766                |  | 9,250,032                 |  | 15,874,836     |  |      | 154,125 
|Stock issue costs, net of tax                                                               |  | (4,641)                  |  | (267)                     |  | (11,977)       |  |      | (116)   
|Cash dividends                                                                              |  |                         |  |                          |  | (1,829,260)    |  |      | (17,760)
|Loss on sales of treasury stock, net of tax                                                 |  |                         |  |                          |  | (105,039)      |  |      | (1,020) 
|                                                                                            |  |                          |  |                           |  |                |  |      |         
|Balance at end of year                                                                      |  | 18,986,701               |  | 28,236,466                |  | 42,165,026     |  |      | 409,369 
|                                                                                            |  |                          |  |                           |  |                |  |      |         
|Net unrealized gain (loss) on debt and equity securities:                                   |  |                          |  |                           |  |                |  |      |         
|Balance at beginning of year                                                                |  | (310,480)                |  | (83,877)                  |  | 70,965         |  |      | 689     
|Net change during the year                                                                  |  | 226,603                  |  | 154,842                   |  | 213,383        |  |      | 2,072   
|                                                                                            |  |                          |  |                           |  |                |  |      |         
|Balance at end of year                                                                      |  | (83,877)                 |  | 70,965                    |  | 284,348        |  |      | 2,761   
|                                                                                            |  |                          |  |                           |  |                |  |      |         



F-7



---

TREND MICRO INCORPORATED

AND CONSOLIDATED SUBSIDIARIES



CONSOLIDATED STATEMENTS OF SHAREHOLDERS EQUITY



|                                               |  |                          |  |                           |  |                 |  |      |         
|---------------------------------------------- |  | ------------------------ |  | ------------------------- |  | --------------- |  | ---- | --------
|                                               |  | Years ended December 31, |  | Year endedDecember 31,   
|                                               |  | 2002                     |  | 2003                      |  | 2004            |  | 2004
|                                               |  | Thousands of yen         |  | Thousands of U.S. dollars
|Cumulative translation adjustments:            |  |                          |  |                           |  |                 |  |      |         
|Balance at beginning of year                   |  | 848,873                  |  | 285,079                   |  | (500,946)       |  |      | (4,864) 
|Aggregate translation adjustments for the year |  | (563,794)                |  | (786,025)                 |  | (105,517)       |  |      | (1,024) 
|                                               |  |                          |  |                           |  |                 |  |      |         
|Balance at end of year                         |  | 285,079                  |  | (500,946)                 |  | (606,463)       |  |      | (5,888) 
|                                               |  |                          |  |                           |  |                 |  |      |         
|Treasury stock, at cost:                       |  |                          |  |                           |  |                 |  |      |         
|Balance at beginning of year                   |  | (28,529)                 |  | (2,322,287)               |  | (4,416,763)     |  |      | (42,881)
|Purchase of treasury stock                     |  | (2,300,224)              |  | (2,094,476)               |  | (3,759,507)     |  |      | (36,500)
|Sales of treasury stock                        |  | 6,466                    |  |                          |  | 721,807         |  |      | 7,008   
|                                               |  |                          |  |                           |  |                 |  |      |         
|Balance at end of year                         |  | (2,322,287)              |  | (4,416,763)               |  | (7,454,463)     |  |      | (72,373)
|                                               |  |                          |  |                           |  |                 |  |      |         
|Total Shareholders equity                     |  | (Yen)37,144,230          |  | (Yen)43,951,797           |  | (Yen)63,174,760 |  | $    | 613,348 
|                                               |  |                          |  |                           |  |                 |  |      |         



The accompanying notes
are an integral part of these statements.



F-8



---

TREND MICRO INCORPORATED

AND CONSOLIDATED SUBSIDIARIES



CONSOLIDATED STATEMENTS OF CASH FLOWS



|                                                                                           |  |                          |   |  |                           |   |  |                 |   |  |      |           |  
|------------------------------------------------------------------------------------------ |  | ------------------------ | - |  | ------------------------- | - |  | --------------- | - |  | ---- | --------- | -
|                                                                                           |  | Years ended December 31, |   |  | Year ended December 31,   |  
|                                                                                           |  | 2002                     |   |  | 2003                      |   |  | 2004            |   |  | 2004 |          
|                                                                                           |  | Thousands of yen         |   |  | Thousands of U.S. dollars |  
|Cash flows from operating activities:                                                      |  |                          |   |  |                           |   |  |                 |   |  |      |           |  
|Net income                                                                                 |  | (Yen)7,713,766           |   |  | (Yen)9,250,032            |   |  | (Yen)15,874,836 |   |  | $    | 154,125   |  
|Adjustments to reconcile net income to net cash provided by operating activities          |  |                          |   |  |                           |   |  |                 |   |  |      |           |  
|Depreciation and amortization                                                              |  | 1,910,246                |   |  | 2,266,356                 |   |  | 1,590,743       |   |  |      | 15,444    |  
|Pension and severance costs, less payments                                                 |  | 82,007                   |   |  | 140,661                   |   |  | 166,649         |   |  |      | 1,618     |  
|Deferred income taxes                                                                      |  | (1,542,750               | ) |  | (1,334,998                | ) |  | (1,390,387      | ) |  |      | (13,499   | )
|(Gain) loss on sales of marketable securities                                              |  | 259,293                  |   |  | 65,259                    |   |  | (101,199        | ) |  |      | (983      | )
|Impairment loss of securities investments                                                  |  | 804,661                  |   |  | 7,360                     |   |  |                |   |  |      |          |  
|Equity in earnings of affiliated companies                                                 |  | (11,189                  | ) |  | (23,623                   | ) |  | (53,122         | ) |  |      | (516      | )
|Changes in assets and liabilities:                                                         |  |                          |   |  |                           |   |  |                 |   |  |      |           |  
|Increase (decrease) in deferred revenue                                                    |  | 5,608,143                |   |  | 5,036,872                 |   |  | 7,293,488       |   |  |      | 70,811    |  
|(Increase) decrease in accounts receivable, net of allowances                              |  | (118,016)                |   |  | (446,201)                 |   |  | (3,421,729)     |   |  |      | (33,221)  |  
|(Increase) decrease in inventories                                                         |  | (137,030)                |   |  | 278,751                   |   |  | (124,093)       |   |  |      | (1,205)   |  
|Increase (decrease) in notes and accounts payable trade                                    |  | (201,989)                |   |  | (52,021)                  |   |  | 379,882         |   |  |      | 3,688     |  
|Increase (decrease) in accrued income and other taxes                                      |  | 730,629                  |   |  | 193,227                   |   |  | 2,912,481       |   |  |      | 28,277    |  
|(Increase) decrease in other current assets                                                |  | 141,170                  |   |  | (67,898)                  |   |  | (90,479)        |   |  |      | (878)     |  
|Increase (decrease) in accounts payable, other                                             |  | (171,645)                |   |  | (11,962)                  |   |  | 823,199         |   |  |      | 7,992     |  
|Increase (decrease) in other current liabilities                                           |  | 96,567                   |   |  | 602,296                   |   |  | 1,107,855       |   |  |      | 10,756    |  
|(Increase) decrease in other assets                                                        |  | (361,945)                |   |  | (324,879)                 |   |  | 110,628         |   |  |      | 1,074     |  
|Other                                                                                      |  | (58,822)                 |   |  | 87,072                    |   |  | (178,744)       |   |  |      | (1,736)   |  
|                                                                                           |  |                          |   |  |                           |   |  |                 |   |  |      |           |  
|Net cash provided by operating activities                                                  |  | 14,743,096               |   |  | 15,666,304                |   |  | 24,900,008      |   |  |      | 241,747   |  
|                                                                                           |  |                          |   |  |                           |   |  |                 |   |  |      |           |  
|Cash flows from investing activities:                                                      |  |                          |   |  |                           |   |  |                 |   |  |      |           |  
|Payments for purchases of property and equipment                                           |  | (811,632                 | ) |  | (715,901                  | ) |  | (801,935        | ) |  |      | (7,785    | )
|Software development cost                                                                  |  | (1,025,516               | ) |  | (788,760                  | ) |  | (645,166        | ) |  |      | (6,264    | )
|Payments for purchases of other intangibles                                                |  | (306,573                 | ) |  | (270,570                  | ) |  | (229,167        | ) |  |      | (2,225    | )
|Proceeds from sales of marketable securities                                               |  | 292,607                  |   |  | 2,945,331                 |   |  | 4,986,012       |   |  |      | 48,408    |  
|Payments for purchases of marketable securities maturing within three months or less (net) |  |                         |   |  |                          |   |  | (2,156,191)     |   |  |      | (20,934)  |  
|Payments for purchases of marketable securities and security investments                   |  | (1,326,512)              |   |  | (10,248,908)              |   |  | (17,240,100)    |   |  |      | (167,380) |  
|(Payments for) / Proceeds from time deposits                                               |  | 5,046                    |   |  | (374,601)                 |   |  | 57,047          |   |  |      | 554       |  
|                                                                                           |  |                          |   |  |                           |   |  |                 |   |  |      |           |  
|Net cash used in investing activities                                                      |  | (3,172,580               | ) |  | (9,453,409                | ) |  | (16,029,500     | ) |  |      | (155,626  | )
|                                                                                           |  |                          |   |  |                           |   |  |                 |   |  |      |           |  



F-9



---

TREND MICRO INCORPORATED

AND CONSOLIDATED SUBSIDIARIES



CONSOLIDATED STATEMENTS OF CASH FLOWS



|                                                                                                      |  |                          |  |                          |  |                 |  |      |         
|----------------------------------------------------------------------------------------------------- |  | ------------------------ |  | ------------------------ |  | --------------- |  | ---- | --------
|                                                                                                      |  | Years ended December 31, |  | Year ended December 31, 
|                                                                                                      |  | 2002                     |  | 2003                     |  | 2004            |  | 2004
|                                                                                                      |  | Thousands of yen         |  | Thousands ofU.S. dollars
|Cash flows from financing activities:                                                                 |  |                          |  |                          |  |                 |  |      |         
|Issuance of common stock pursuant to exercise of stock purchase warrants and stock acquisition rights |  | 842,110                  |  | 278,002                  |  | 8,049,004       |  |      | 78,146  
|Proceeds from issuance of bonds                                                                       |  | 4,000,000                |  |                         |  |                |  |      |        
|Purchase of treasury bonds                                                                            |  | (4,008,800)              |  |                         |  |                |  |      |        
|Redemption of bonds                                                                                   |  | (3,000,000)              |  | (5,000,000)              |  | (6,500,000)     |  |      | (63,107)
|Purchase of treasury stock, net                                                                       |  | (2,293,758)              |  | (2,094,476)              |  | (3,165,679)     |  |      | (30,735)
|Tax benefit from exercise of non-qualified stock warrants                                             |  | 446,809                  |  | 233,277                  |  | 498,905         |  |      | 4,844   
|Tax recognition derived from elimination of reversed warrant related with stock option plan           |  | 12,934                   |  | (228,085)                |  | (312,708)       |  |      | (3,036) 
|Dividend paid                                                                                         |  |                         |  |                         |  | (1,819,607)     |  |      | (17,666)
|Other                                                                                                 |  | (6,744)                  |  |                         |  |                |  |      |        
|                                                                                                      |  |                          |  |                          |  |                 |  |      |         
|Net cash provided / (used) by financing activities                                                    |  | (4,007,449)              |  | (6,811,282)              |  | (3,250,085)     |  |      | (31,554)
|                                                                                                      |  |                          |  |                          |  |                 |  |      |         
|Effect of exchange rate changes on cash and cash equivalents                                          |  | (515,896)                |  | (512,494)                |  | 568,994         |  |      | 5,524   
|                                                                                                      |  |                          |  |                          |  |                 |  |      |         
|Net increase (decrease) in cash and cash equivalents                                                  |  | 7,047,171                |  | (1,110,881)              |  | 6,189,417       |  |      | 60,091  
|Cash and cash equivalents at beginning of year                                                        |  | 40,782,650               |  | 47,829,821               |  | 46,718,940      |  |      | 453,582 
|                                                                                                      |  |                          |  |                          |  |                 |  |      |         
|Cash and cash equivalents at end of year                                                              |  | (Yen)47,829,821          |  | (Yen)46,718,940          |  | (Yen)52,908,357 |  | $    | 513,673 
|                                                                                                      |  |                          |  |                          |  |                 |  |      |         
|Supplementary information of cash flow:                                                               |  |                          |  |                          |  |                 |  |      |         
|Payment for interest expense                                                                          |  | (Yen)307,999             |  | (Yen)151,623             |  | (Yen)114,121    |  | $    | 1,108   
|Payment for income taxes                                                                              |  | 5,835,904                |  | 7,102,721                |  | 8,990,398       |  |      | 87,285  
|                                                                                                      |  |                          |  |                          |  |                 |  |      |         



The accompanying notes
are an integral part of these statements.



F-10



---

TREND MICRO INCORPORATED

AND CONSOLIDATED SUBSIDIARIES



NOTES TO CONSOLIDATED FINANCIAL STATEMENTS



1. Nature of operations



Trend Micro Incorporated (the parent company) and its subsidiaries (collectively the Company) are primarily engaged
in the development, production and sale of anti-virus software and providing management solutions for corporate computer systems. The Company develops its software in Japan, Taiwan, the United States, Germany, UK and China, and its products are
marketed by sales subsidiaries throughout the world.



2. Summary of
significant accounting policies



The parent company and its subsidiaries
in Japan maintain their records and prepare their financial statements in accordance with accounting principles generally accepted in Japan, and its foreign subsidiaries maintain their records and prepare their financial statements in conformity
with accounting principles generally accepted in the respective countries of their domicile. Certain adjustments and reclassifications, including those relating to the tax effects of temporary differences, valuation of debt and equity securities and
revenue on post-contract support, have been incorporated in the accompanying consolidated financial statements to conform with accounting principles generally accepted in the United States of America (U.S. GAAP). These adjustments were
not recorded in the statutory books of account.



The preparation of financial
statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and
the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates.



(1) Significant accounting policies:



Basis of consolidation



The consolidated financial statements include the accounts of the parent company and those of its majority-owned subsidiaries. All intercompany
transactions and accounts are eliminated on consolidation.



Investments in affiliated companies (20 to 50 percent-owned companies) in which the ability to exercise significant influence exists are stated at cost plus the equity in undistributed earnings (losses). Net consolidated income includes the
companys equity in the current net earnings (losses) of such companies, after elimination of unrealized intercompany profit.



Translation of foreign currencies



All asset and liability accounts of foreign subsidiaries are translated into Japanese yen at year-end rates of exchange and all income and expense
accounts are translated at rates of exchange that approximate to those prevailing at the time of the transactions. The resulting translation adjustments are included in accumulated other comprehensive income (loss).



Foreign currency denominated receivables and payables are translated into
Japanese yen at year-end rates of exchange and the resulting translation gains or losses included in current income.



Revenue recognition



The Companys revenue is derived primarily from product revenue, which includes software product license and post- contract customer support
services. Other revenue is composed of hardware revenue, royalty revenue and supplementary service revenue. Royalty revenue is comprised of fees from Application service providers and Internet service providers and
supplementary services are comprised of fees from services based on Premium support program and Service level agreement. Product revenue includes the type of limited sales of our products to other companies for inclusion in
their products.



The Company licenses its software products
under perpetual licenses. The Company sells its products and services via its direct sales force and through domestic and foreign intermediaries.



The Company applies the provisions of SOP 97-2, Software Revenue Recognition, as amended by SOP 98-9 Modification of SOP 97-2,
Software Revenue Recognition, With Respect to Certain Transactions to all transactions involving the sale of software products and hardware transactions where software is not incidental. For hardware transactions where software is not
incidental, the Company does not bifurcate the fee and apply separate accounting guidance to the hardware and software elements.



F-11



---

Revenue from the Companys software product license and hardware where software is not incidental is
recognized when persuasive evidence of an arrangement exists, the product has been delivered, the fee is fixed and determinable, and collection of the resulting receivable, net of allowances for doubtful accounts and sales returns, is reasonably
assured. Post-contract customer support services revenue which includes virus pattern updates, unspecified product version updates, telephone and online technical support and supplementary services revenue are deferred and recognized ratably over
the service period. The Company allocates revenue to post-contract customer support services based on the fair value of the post-contract customer support services, which are determined based on separate sales of renewals to customers. Royalty
revenue is recognized as earned unless collection of the related receivables is not assured in which case, it is recognized upon receipt of cash.



For all sales, the Company uses either a binding purchase order or signed license agreement as evidence of an arrangement. Sales through our
intermediaries are evidenced by a master agreement governing the relationship together with binding purchase orders on a transaction-by-transaction basis.



At the time of the transaction, the Company assesses whether the fee associated with our revenue transactions is fixed and determinable and whether or not
collection is reasonably assured. The Company assesses whether the fee is fixed and determinable based on the payment terms associated with the transaction. If a significant portion of a fee is due after our normal payment terms, which are 30 to 90
days from the invoice date, the Company accounts for the fee as not being fixed and determinable. In these cases, the Company recognizes revenue as the fees become due. The Company assesses collection based on a number of factors, including past
transaction history with the customer and the credit-worthiness of the customer. The Company does not request collateral from our customers. If the Company determines that collection of a fee is not reasonably assured, the Company defers the fee and
recognizes revenue at the time collection becomes reasonably assured, which is generally upon receipt of cash.



The Company recognizes revenue from sales to intermediaries when products have been delivered to the intermediary. The Company primarily sells retail
packages through intermediaries. After sale of a retail package, the Company may approve certain returns from intermediaries or end-users; therefore, the Company makes an estimate of returns from intermediaries or end-users based on its historical
experience. The provision for estimated returns is recorded as a reduction to revenue at the time of the sale.



Cash and cash equivalents



Cash and cash equivalents include cash on hand, cash on deposit with banks and all highly liquid investments, with original maturities of three months or
less, that are readily convertible to known amounts of cash and are so near maturity that they present insignificant risk of changes in value because of changes in interest rates.



Marketable securities and Security investments



Marketable securities and security investments consist of debt and equity securities. Debt and equity securities designated
as available-for-sale are carried at fair value with unrealized gains or losses included in accumulated other comprehensive income (loss), net of applicable taxes. Debt securities designated as held-to-maturity are carried at amortized cost. The
Company classifies available for sale debt securities with maturities longer than one year as Securities investments in investments and other assets. Individual securities classified as either available-for-sale or held-to-maturity are
reduced to net realizable value for other than temporary declines in market value. Realized gains and losses, which are determined on the average cost method, are reflected in income.



Inventories



Finished products and raw materials are valued at the lower of weighted average cost or net realizable value. Work in process is stated at accumulated
production costs.



Property and equipment



Property and equipment are stated at cost less accumulated depreciation.
Major renewals and improvements are capitalized; minor replacements, maintenance and repairs are charged to current operations. Depreciation of property and equipment is computed on the declining-balance method for the parent company and on the
straight-line method for foreign subsidiaries at rates based on estimated useful lives of the assets according to general class, type of construction and use. Estimated useful lives range mainly from 3 to 6 years for office furniture and equipment,
and mainly from 3 to 6 years for other properties.



F-12



---

Intangible assets



Intangible assets, which mainly consist of software development costs and purchased software, are amortized on a
straight-line basis over the estimated economic lives of the products, generally over twelve-month period for software development costs and a five-year period for purchased software and other intangibles.



Impairment of long-lived assets



The Company evaluates long-lived assets and definite lived intangible assets
to be held and used whenever events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable. Determination of recoverability is based on the sum of expected future cash flows (undiscounted and without
interest charges) from the use and eventual disposition of the asset. If the fair value is less than the carrying amount of the asset, an impairment loss is recognized, based on the fair value of the asset.



Research and development costs and software development costs



All costs relating to research and development, to establish
the technological feasibility of software products, are expensed as incurred. Under the Companys software development process, technological feasibility is established on completing all substantial testing for the original English language
version of the software. Local language versions of software, such as Japanese or Chinese, are produced from the English language version, by adding Japanese language or Chinese language related functions. Production costs for such local language
versions of software product masters, incurred subsequent to the availability of original English language version software, are capitalized. Production costs of the local language software product masters, which include direct labor and overhead
costs, are amortized to cost of sales using the straight-line method over the current estimated economic lives of the products, generally up to twelve months.



Management considers the Companys capitalized software development costs to be fully recoverable from future product sales. Management estimates
are based upon supporting facts and circumstances, and may be significantly impacted based upon subsequent changes in business conditions.



Advertising costs



Advertising costs are expensed as incurred.



Stock-based compensation



The Company accounts for its stock-based incentive awards in accordance with the intrinsic value method as per APB No. 25, Accounting for Stock
Issued to Employees and related interpretations. The Company complies with the disclosure provisions of FAS No. 123, Accounting for Stock-Based Compensation, as amended by FAS No. 148.



In October 1995, FAS 123 established a fair value based method of accounting
for employee stock based compensation. If compensation cost for the stock options with warrants, the stock options under the U.S. program, which was expired in July 2003, the stock options with subscription right which qualified under Article 280-19
of the unrevised Japanese Commercial Code, and the stock options with Stock acquisition rights had been determined based on the fair value at the grant dates, as prescribed by FAS 123, the Companys pro forma net income and net income per share
would have been as follows:



|                                                                                                                                            |  |                                       |  |                |  |                 |  |      |         
|------------------------------------------------------------------------------------------------------------------------------------------- |  | ------------------------------------- |  | -------------- |  | --------------- |  | ---- | --------
|                                                                                                                                            |  | Years ended December 31,             
|                                                                                                                                            |  | 2002                                  |  | 2003           |  | 2004            |  | 2004
|                                                                                                                                            |  | (in thousands, except per share data)
|Net income:                                                                                                                                 |  |                                       |  |                |  |                 |  |      |         
|As reported                                                                                                                                 |  | (Yen)7,713,766                        |  | (Yen)9,250,032 |  | (Yen)15,874,836 |  | $    | 154,125 
|Deduct: Total stock-based employee compensation expense determined under fair value based method for all awards, net of related tax
effects |  | (860,662)                             |  | (1,351,384)    |  | (2,640,021)     |  |      | (25,631)
|Pro forma net income                                                                                                                        |  | 6,853,104                             |  | 7,898,648      |  | 13,234,815      |  |      | 128,494 
|Net income per share:                                                                                                                       |  |                                       |  |                |  |                 |  |      |         
|As reported                                                                                                                                |  |                                       |  |                |  |                 |  |      |         
|Basic                                                                                                                                       |  | (Yen)58.39                            |  | (Yen)70.11     |  | (Yen)120.64     |  | $    | 1.17    
|Diluted                                                                                                                                     |  | 58.22                                 |  | 69.95          |  | 118.59          |  |      | 1.15    
|Pro forma net income                                                                                                                       |  |                                       |  |                |  |                 |  |      |         
|Basic                                                                                                                                       |  | (Yen)51.87                            |  | (Yen)59.87     |  | (Yen)100.58     |  | $    | 0.98    
|Diluted                                                                                                                                     |  | 51.72                                 |  | 59.73          |  | 98.87           |  |      | 0.96    



The fair values of the
stock options with Stock acquisition rights were estimated on the date of grant using the Black-Scholes option pricing model with the following assumptions used for grants during the years ended December 31, 2002, 2003 and 2004;



|                        |  |        |  |                 |  |              
|----------------------- |  | ------ |  | --------------- |  | -------------
|                        |  | 2002   |  | 2003            |  | 2004         
|Expected life (Years)   |  | 4.0    |  | 4.7-5.0         |  | 5.0          
|Volatility              |  | 18.0%  |  | 44.870%-60.240% |  | 51.71%-59.57%
|Dividend yield          |  | 0.00%  |  | 0.48%-0.66%     |  | 0.39%-0.43%  
|Risk-free interest rate |  | 0.361% |  | 0.160%-0.612%   |  | 0.634%-0.674%



The fair value per
share of options granted above during fiscal 2002, 2003 and 2004 were (Yen) 518, (Yen)777-1,313 and (Yen)2,190-2,235 ($21.26-21.70), respectively.



F-13



---

Income taxes



The current provision for income taxes is computed based on the pretax income included in the consolidated statement of
income. The asset and liability approach is used to recognize deferred tax assets and liabilities for the expected future tax consequences of temporary differences between the carrying amounts and the tax bases of assets and liabilities. Deferred
tax assets and liabilities are measured using enacted tax rates in effect for the year in which those temporary differences are expected to be recovered or settled. The effect on deferred assets (including deferred tax assets and liabilities on net
unrealized gain or loss on debt and equity securities) of a change in tax rates is recognized in income in the period that includes the enactment date. Valuation allowances are recorded to reduce deferred tax assets when it is more likely than not
that a tax benefit will not be realized.



Net income per
share



Basic net income per share is computed based on the
average number of shares of common stock outstanding for the period. Diluted net income per share assumes the dilution that could occur if securities or other contracts to issue common stock were exercised or converted into common stock, or resulted
in the issuance of common stock. Net income per share is appropriately adjusted for any stock splits or free distributions of common stock.



Free distribution of common stock



On occasion, the Company has made free distributions of common stock to its shareholders which have been accounted for either by a transfer of the
applicable par value from additional paid-in capital to the common stock account or with no entry if free shares were distributed from the portion of previously issued shares accounted for as excess of par value in the common stock account in
accordance with the Japanese Commercial Code. However, as a result of the amendments to the Japanese Commercial Code in 2001 where the concept of par-value of shares was eliminated effective from October 1, 2001, a free distribution of common stock
to its shareholders is accounted for with no accounting entry. Under the Japanese Commercial Code, a stock dividend which is paid out of profits can be effected by an appropriation of retained earnings to the common stock account by resolution of
the general shareholders meeting, followed by a free distribution with respect to the amount as appropriated by resolution of the Board of Directors.



Common stock issue costs



Common stock issue costs are directly charged to retained earnings, net of tax, in the accompanying consolidated financial statements as the Japanese
Commercial Code prohibits charging such stock issue costs to capital accounts, which is the prevailing practice in the United States of America.



Comprehensive income



Other comprehensive income refers to revenues, expenses, gains and losses that under U.S. GAAP are included in comprehensive income but are excluded from
net income as these amounts are recorded directly as adjustments to shareholders equity. The Companys other comprehensive income primarily comprises unrealized gains or losses on debt and equity securities and foreign currency
translation adjustments.



Market and credit risks



The anti-virus software market is characterized by rapid
technological change and evolving industry standards in computer hardware and software technology. In addition, the markets for the Companys products are highly competitive and rapidly changing. The Company could incur substantial operating
losses if it is unable to offer products, which address technological and market place change in the anti-virus software industry.



Other financial instruments that potentially subject the Company to significant concentrations of credit risk consist principally of cash equivalents,
marketable securities and accounts receivable. The Company invests primarily in time deposits, money market funds and marketable securities and places its investments with high quality financial institutions. The Company performs ongoing credit
evaluations of its customers financial condition and maintains an allowance for uncollectible accounts receivable, if any, based upon the expected collectibility of accounts receivable.



F-14



---

|(2) | Recent pronouncements:
|--- | ----------------------



In November 2004, the FASB issued SFAS No. 151 Inventory Costs  an amendment of ARB No. 43, Chapter 4. This Statement amends the
guidance in ARB No. 43, Chapter 4, Inventory Pricing, to clarify the accounting for abnormal amounts of idle facility expense, freight, handling costs, and wasted material (spoilage). The provisions of SFAS No. 151 shall be effective for
inventory costs incurred during fiscal years beginning after June 15, 2005. The standard will not have a material effect on the Companys financial position and results of operations.



In December 2004, the FASB revised SFAS No.123 Share-Based
Payment This new SFAS No.123 focuses primarily on accounting for transactions in which an entity obtains employee services in share-based payment transactions. This Statement is effective as of the beginning of the first fiscal year that
starts after June 15, 2005. We intend to adopt the provisions on FAS 123(R) effective January 1, 2006. The Company is currently evaluating which transition method and valuation technique to be used upon adoption. The Companys pro forma net
income and net income per share for the year ended December 31, 2004 based on the fair values of the stock options with Stock acquisition rights, which were estimated on the date of grant using the Black-Scholes option pricing model in accordance
with the original SFAS No.123, are disclosed in Note 2 (1) Significant accounting policiesStock-based compensation.



In December 2004, the FASB issued SFAS No. 152 Accounting for Real Estate Time-Sharing Transactions  an amendment of FASB Statements No. 66
and 67. This Statement amends FASB Statement No. 66, Accounting for Sales of Real Estate, to reference the financial accounting and reporting guidance for real estate time-sharing transactions that is provided in AICPA Statement of
Position (SOP) 04-2, Accounting for Real Estate Time-Sharing Transactions. This Statement also amends FASB Statement No. 67, Accounting for Costs and Initial Rental Operations of Real Estate Projects, to state that the guidance for (a) incidental
operations and (b) costs incurred to sell real estate projects does not apply to real estate time-sharing transactions. The accounting for those operations and costs is subject to the guidance in SOP 04-2. This Statement is effective for financial
statements for fiscal years beginning after June 15, 2005. The standard will not have a material effect on the Companys financial position and results of operations.



In December 2004, the FASB issued SFAS No. 153 Exchanges of Nonmonetary Assets  an amendment of APB Opinion
No. 29. The guidance in APB Opinion No. 29, Accounting for Nonmonetary Transactions, is based on the principle that exchanges of nonmonetary assets should be measured based on the fair value of the assets exchanged. The guidance in that
Opinion, however, included certain exceptions to that principle. This Statement amends Opinion 29 to eliminate the exception for nonmonetary exchanges of similar productive assets and replaces it with a general exception for exchanges of nonmonetary
assets that do not have commercial substance. A nonmonetary exchange has commercial substance if the future cash flows of the entity are expected to change significantly as a result of the exchange. The provisions of this Statement shall be
effective for nonmonetary asset exchanges occurring in fiscal periods beginning after June 15. The standard will not have a material effect on the Companys financial position and results of operations.



|(3) | Reclassifications
|--- | -----------------



Previously, the Company has disclosed all of available for sale debt securities as Marketable securities in current assets. However, since the
balance of cash and cash equivalents has increased, in fiscal 2004, the possibility of sales before maturity of available for sale debt securities classified into working capital has decreased. Therefore, from fiscal 2004, the Company
discloses available for sale debt securities with maturities longer than one year as Securities investments in investments and other assets.



Fiscal 2003 balance sheet has been prepared on a consistent basis for reference. As a result, available for sale debt securities of (Yen)
5,483,094 thousand is reclassified from current assets to investments and other assets. In addition, related deferred taxes of (Yen) 2,522 thousand are reclassified from current liabilities to long-term liabilities.



F-15



---

3. U.S. dollar amounts



U.S. dollar amounts presented in the financial statements are included solely for the convenience of the reader. These translations should not be construed as
representations that the yen amounts actually represent, or have been or could be converted into U.S. dollars. As the amounts shown in U.S. dollars are for convenience only, the approximate current rate at December 31, 2004 ((Yen)103.00 = U.S. $1)
has been used for the purpose of presentation of the U.S. dollar amounts in the accompanying consolidated financial statements.



4. Reconciliation of the difference between basic and diluted net income per share (EPS)



Reconciliation of the differences between basic and diluted EPS for the years ended December 31, 2002, 2003 and 2004, is as follows:



|                                                    |  |                  |  |                           |  |                 |  |      |        
|--------------------------------------------------- |  | ---------------- |  | ------------------------- |  | --------------- |  | ---- | -------
|                                                    |  | 2002             |  | 2003                      |  | 2004            |  | 2004
|                                                    |  | Thousands of Yen |  | Thousands of U.S. dollars
|Net income available to common stock holders        |  | (Yen)7,713,766   |  | (Yen)9,250,032            |  | (Yen)15,874,836 |  | $    | 154,125
|                                                    |  |                 
|                                                    |  | Shares           |  |                          
|Weighted-Average shares                             |  | 132,111          |  | 131,940                   |  | 131,589         |  |      |        
|Effect of dilutive securities:                      |  |                  |  |                           |  |                 |  |      |        
|Stock options                                       |  | 383              |  | 295                       |  | 2,274           |  |      |        
|Weighted-Average shares for diluted EPS computation |  | 132,494          |  | 132,235                   |  | 133,863         |  |      |        
|                                                    |  |                 
|                                                    |  | Yen              |  | U.S. dollars             
|Basic EPS:                                          |  | (Yen)58.39       |  | (Yen)70.11                |  | (Yen)120.64     |  | $    | 1.17   
|Diluted EPS:                                        |  | 58.22            |  | 69.95                     |  | 118.59          |  | $    | 1.15   



Shareholders equity per share as
of December 31, 2003 and 2004 were as follows:



|                               |  |              |        |              |       |        |  |   |     
|------------------------------ |  | ------------ | ------ | ------------ | ----- | ------ |  | - | ----
|                               |  | December 31, |        | December 31,
|                               |  | 2003         |        | 2004         |       | 2004  
|                               |  | Yen          |        | U.S. dollars
|Shareholders equity per share |  | (Yen)        | 336.38 |              | (Yen) | 474.40 |  | $ | 4.61



5. Cash and cash equivalents



Cash and cash equivalents as of December 31, 2003 and 2004 comprised:



|                                                               |  |                  |  |                           |  |      |        
|-------------------------------------------------------------- |  | ---------------- |  | ------------------------- |  | ---- | -------
|                                                               |  | December 31,     |  | December 31,             
|                                                               |  | 2003             |  | 2004                      |  | 2004
|                                                               |  | Thousands of yen |  | Thousands of U.S. dollars
|Cash                                                           |  | (Yen)44,032,813  |  | (Yen)49,189,396           |  | $    | 477,567
|Time deposits with original maturities of three months or less |  | 2,686,127        |  | 3,718,961                 |  |      | 36,106 
|                                                               |  |                  |  |                           |  |      |        
|                                                               |  | (Yen)46,718,940  |  | (Yen)52,908,357           |  | $    | 513,673
|                                                               |  |                  |  |                           |  |      |        



6. Time deposits



The U.S. subsidiary had (Yen)59,354 thousand and (Yen)26,720 thousand, ($259 thousand) of
restricted cash set aside in accordance with the terms of building lease agreement as at December 31, 2003 and 2004, respectively. The restricted cash is included in time deposits.



F-16



---

7. Marketable securities and Securities investments



Marketable securities include mutual funds and debt and equity securities for which the aggregate fair value, gross unrealized gains and
losses and cost pertaining to available-for-sale investments as of December 31, 2003 and 2004, were as follows:



|                    |  |                          |            |                  |       |         |  |            |         |  |       |           
|------------------- |  | ------------------------ | ---------- | ---------------- | ----- | ------- |  | ---------- | ------- |  | ----- | ----------
|                    |  | December 31, 2003       
|                    |  |                          |            | Gross unrealized |       |        
|                    |  | Cost                     |            | Gains            |       | Losses  |  | Fair value
|                    |  | Thousands of yen        
|Available for sale: |  |                          |            |                  |       |         |  |            |         |  |       |           
|Mutual funds        |  | (Yen)                    | 3,606,521  |                  | (Yen) | 89,943  |  | (Yen)      |        |  | (Yen) | 3,696,464 
|Equity securities   |  |                          |           |                  |       |        |  |            |        |  |       |          
|Debt securities     |  |                          | 6,484,630  |                  |       | 196,533 |  |            | 124,598 |  |       | 6,556,565 
|                    |  |                          |            |                  |       |         |  |            |         |  |       |           
|Total               |  | (Yen)                    | 10,091,151 |                  | (Yen) | 286,476 |  | (Yen)      | 124,598 |  | (Yen) | 10,253,029
|                    |  |                          |            |                  |       |         |  |            |         |  |       |           
|                    | 
|                    |  | December 31, 2004       
|                    |  |                          |            | Gross unrealized |       |        
|                    |  | Cost                     |            | Gains            |       | Losses  |  | Fair value
|                    |  | Thousands of yen        
|Available for sale: |  |                          |            |                  |       |         |  |            |         |  |       |           
|Mutual funds        |  | (Yen)                    | 6,823,896  |                  | (Yen) | 466,020 |  | (Yen)      |        |  | (Yen) | 7,289,916 
|Equity securities   |  |                          |           |                  |       |        |  |            |        |  |       |          
|Debt securities     |  |                          | 17,142,091 |                  |       | 226,557 |  |            | 185,123 |  |       | 17,183,525
|                    |  |                          |            |                  |       |         |  |            |         |  |       |           
|Total               |  | (Yen)                    | 23,965,987 |                  | (Yen) | 692,577 |  | (Yen)      | 185,123 |  | (Yen) | 24,473,441
|                    |  |                          |            |                  |       |         |  |            |         |  |       |           
|                    | 
|                    |  | December 31, 2004       
|                    |  |                          |            | Gross unrealized |       |        
|                    |  | Cost                     |            | Gains            |       | Losses  |  | Fair value
|                    |  | Thousands of U.S dollars
|Available for sale: |  |                          |            |                  |       |         |  |            |         |  |       |           
|Mutual funds        |  | $                        | 66,251     |                  | $     | 4,525   |  | $          |        |  | $     | 70,776    
|Equity securities   |  |                          |           |                  |       |        |  |            |        |  |       |          
|Debt securities     |  |                          | 166,428    |                  |       | 2,199   |  |            | 1,797   |  |       | 166,830   
|                    |  |                          |            |                  |       |         |  |            |         |  |       |           
|Total               |  | $                        | 232,679    |                  | $     | 6,724   |  | $          | 1,797   |  | $     | 237,606   
|                    |  |                          |            |                  |       |         |  |            |         |  |       |           



F-17



---

The contractual maturities of available-for-sale debt securities as of December 31, 2004 were as follows:



|                             |  |                           |  |                     
|---------------------------- |  | ------------------------- |  | --------------------
|                             |  | Aggregated Par value      |  | Estimated Fair Value
|                             |  | Thousands of yen         
|Due less than one year       |  | (Yen)7,852,468            |  | (Yen)7,998,660      
|                             |  |                           |  |                     
|Due after one to two years   |  | 6,811,106                 |  | 6,855,524           
|                             |  |                           |  |                     
|Due after two to three years |  | 2,284,228                 |  | 2,329,341           
|                             |  |                           |  |                     
|Debt securities              |  | (Yen)16,947,802           |  | (Yen)17,183,525     
|                             |  |                           |  |                     
|                             |  |                          
|                             |  | Aggregated Par value      |  | Estimated Fair Value
|                             |  | Thousands of U.S. dollars
|Due less than one year       |  | $76,238                   |  | $77,657             
|                             |  |                           |  |                     
|Due after one to two years   |  | 66,127                    |  | 66,558              
|                             |  |                           |  |                     
|Due after two to three years |  | 22,177                    |  | 22,615              
|                             |  |                           |  |                     
|Debt securities              |  | $164,542                  |  | $166,830            
|                             |  |                           |  |                     



The net unrealized gain on
available-for-sale securities included in the separate component of shareholders equity, net of applicable taxes, increased by (Yen)226,603 thousand, (Yen)177,733 thousand and (Yen)197,606 thousand ($1,919 thousand), in the years
ended December 31, 2002, 2003 and 2004 respectively.



Proceeds from sales of
available-for-sale securities for the years ended December 31, 2002, 2003 and 2004 were (Yen)292,607 thousand, (Yen)2,945,331 thousand and (Yen)4,986,012 thousand ($48,408 thousand), respectively. Realized gains (losses) on sales of
available-for-sale securities for the year ended December 31, 2002, 2003 and 2004 were (Yen)(259,293) thousand (Yen)(65,259) thousand and (Yen)101,199 thousand ($983 thousand) respectively.



In 2002, the Company recognized loss from impairment of securities investments of
(Yen)804,661 thousand. The loss primarily resulted from SOFTBANK INTERNET FUND and common stock of Information Security One Limited, a Cayman Islands, British West Indies provider of enterprise solutions and professional services company.



F-18



---

The following table shows our investments gross unrealized losses and fair value, aggregated by investment category
and length of time that individual securities have been in a continuous unrealized loss position, at December 31, 2003 and 2004.



|                    |  |                           |  |                   |  |              |  |                  |  |                 |  |                 
|------------------- |  | ------------------------- |  | ----------------- |  | ------------ |  | ---------------- |  | --------------- |  | ----------------
|                    |  | December 31, 2003        
|                    |  | Less than 12 months       |  | 12 Months or More |  | Total       
|                    |  | Thousands of yen         
|                    |  |                           |  |                   |  |             
|                    |  | Fair Value                |  | UnrealizedLosses  |  | Fair Value   |  | UnrealizedLosses |  | Fair Value      |  | UnrealizedLosses
|Available for sale: |  |                           |  |                   |  |              |  |                  |  |                 |  |                 
|Mutual funds        |  | (Yen)                    |  | (Yen)            |  | (Yen)       |  | (Yen)           |  | (Yen)          |  | (Yen)          
|                    |  |                           |  |                   |  |              |  |                  |  |                 |  |                 
|Equity securities   |  |                          |  |                  |  |             |  |                 |  |                |  |                
|                    |  |                           |  |                   |  |              |  |                  |  |                 |  |                 
|Debt securities     |  | 926,585                   |  | 94,737            |  | 114,127      |  | 29,861           |  | 1,040,712       |  | 124,598         
|                    |  |                           |  |                   |  |              |  |                  |  |                 |  |                 
|Total               |  | (Yen)926,585              |  | (Yen)94,737       |  | (Yen)114,127 |  | (Yen)29,861      |  | (Yen)1,040,712  |  | (Yen)124,598    
|                    |  |                           |  |                   |  |              |  |                  |  |                 |  |                 
|                    | 
|                    |  | December 31, 2004        
|                    |  | Less than 12 months       |  | 12 Months or More |  | Total       
|                    |  | Thousands of yen         
|                    |  |                           |  |                   |  |             
|                    |  | Fair Value                |  | UnrealizedLosses  |  | Fair Value   |  | UnrealizedLosses |  | Fair Value      |  | UnrealizedLosses
|Available for sale: |  |                           |  |                   |  |              |  |                  |  |                 |  |                 
|Mutual funds        |  | (Yen)                    |  | (Yen)            |  | (Yen)       |  | (Yen)           |  | (Yen)          |  | (Yen)          
|                    |  |                           |  |                   |  |              |  |                  |  |                 |  |                 
|Equity securities   |  |                          |  |                  |  |             |  |                 |  |                |  |                
|                    |  |                           |  |                   |  |              |  |                  |  |                 |  |                 
|Debt securities     |  | 9,308,944                 |  | 25,410            |  | 833,114      |  | 159,713          |  | 10,142,058      |  | 185,123         
|                    |  |                           |  |                   |  |              |  |                  |  |                 |  |                 
|Total               |  | (Yen)9,308,944            |  | (Yen)25,410       |  | (Yen)833,114 |  | (Yen)159,713     |  | (Yen)10,142,058 |  | (Yen)185,123    
|                    |  |                           |  |                   |  |              |  |                  |  |                 |  |                 
|                    |  |                           | 
|                    |  | Less than 12 months       |  | 12 Months or More |  | Total       
|                    |  | Thousands of U.S. dollars
|                    |  |                           |  |                   |  |             
|                    |  | Fair Value                |  | UnrealizedLosses  |  | Fair Value   |  | UnrealizedLosses |  | Fair Value      |  | UnrealizedLosses
|Available for sale: |  |                           |  |                   |  |              |  |                  |  |                 |  |                 
|Mutual funds        |  | $                        |  | $                |  | $           |  | $               |  | $              |  | $              
|                    |  |                           |  |                   |  |              |  |                  |  |                 |  |                 
|Equity securities   |  |                          |  |                  |  |             |  |                 |  |                |  |                
|                    |  |                           |  |                   |  |              |  |                  |  |                 |  |                 
|Debt securities     |  | 90,378                    |  | 247               |  | 8,089        |  | 1,550            |  | 98,467          |  | 1,797           
|                    |  |                           |  |                   |  |              |  |                  |  |                 |  |                 
|Total               |  | $90,378                   |  | $247              |  | $8,089       |  | $1,550           |  | $98,467         |  | $1,797          
|                    |  |                           |  |                   |  |              |  |                  |  |                 |  |                 



Investments, which were in unrealized
loss positions as of December 31, 2004, are comprised of U.S. dollar and Euro denominated public debts.



The Company concluded that the impairments of these securities are not other than temporary in consideration of fluctuation of exchange rates and high credit rating of the issuers.



The aggregate cost of the Companys cost method investments totaled (Yen) 111,172
thousand ($1,079 thousand) at December 31, 2004. All the cost method investments were not evaluated for impairment because (a) the Company did not estimate the fair value of those investments in accordance with paragraphs 14 and 15 of SFAS 107 and
(b) the Company did not identify any events or changes in circumstances that may have had a significant adverse effect on the fair value of those investments.



F-19



---

8. Inventories



Inventories as at December 31, 2003 and 2004 consist of the following:



|               |  |                  |  |                          |  |      |      
|-------------- |  | ---------------- |  | ------------------------ |  | ---- | -----
|               |  | December 31,     |  | December 31,            
|               |  | 2003             |  | 2004                     |  | 2004
|               |  | Thousands of yen |  | Thousands ofU.S. dollars
|Finished goods |  | (Yen)63,557      |  | (Yen)170,033             |  | $    | 1,651
|Raw materials  |  | 14,393           |  | 31,210                   |  |      | 303  
|               |  |                  |  |                          |  |      |      
|               |  | (Yen)77,950      |  | (Yen)201,243             |  | $    | 1,954
|               |  |                  |  |                          |  |      |      



9. Investments in and transaction
with affiliated companies



Investees accounted for using the equity method
as of December 31, 2004 are SOFT TREND CAPITAL CORPORATION (20.0%) and Net Star Inc. (40.0%).



A summary of transactions and balances with the affiliated companies accounted for using the equity method is presented below:



|                                     |  |                          |         |                          |       |                          |  |       |        |  |   |    
|------------------------------------ |  | ------------------------ | ------- | ------------------------ | ----- | ------------------------ |  | ----- | ------ |  | - | ---
|                                     |  | Years ended December 31, |         | Year endedDecember 31,  
|                                     |  | 2002                     |         | 2003                     |       | 2004                     |  | 2004 
|                                     |  | Thousands of yen         |         | Thousands ofU.S. dollars
|Sales                                |  | (Yen)                    | 6,556   |                          | (Yen) | 5,571                    |  | (Yen) | 6,482  |  | $ | 63 
|                                     |  |                          |         |                          |       |                          |  |       |        |  |   |    
|Purchases                            |  | (Yen)                    | 104,028 |                          | (Yen) | 189,175                  |  | (Yen) | 37,331 |  | $ | 362
|                                     |  |                          |         |                          |       |                          |  |       |        |  |   |    
|                                     |  |                          |        
|                                     |  |                          |         | December 31,             |       | December 31,            
|                                     |  |                          |         | 2003                     |       | 2004                     |  | 2004 
|                                     |  |                          |         | Thousands of yen         |       | Thousands ofU.S. dollars
|Notes and accounts receivable, trade |  |                          |         |                          | (Yen) |                         |  | (Yen) |       |  | $ |   
|                                     |  |                          |         |                          |       |                          |  |       |        |  |   |    
|Other receivables                    |  |                          |         |                          | (Yen) | 1,848                    |  | (Yen) | 1,901  |  | $ | 18 
|                                     |  |                          |         |                          |       |                          |  |       |        |  |   |    
|Accounts payable, trade              |  |                          |         |                          | (Yen) | 37,524                   |  | (Yen) |       |  | $ |   
|                                     |  |                          |         |                          |       |                          |  |       |        |  |   |    



10. Research and development and
maintenance costs, and software development costs



Research and
development and maintenance costs in operating expenses are comprised of research and development costs and maintenance costs.



Research and development costs incurred up to the point where all substantial testing for the original English version product is complete, are charged to income. Such
research and development costs charged to income were (Yen)1,699,563 thousand, (Yen)1,725,400 thousand and (Yen)2,597,325 thousand, ($25,217 thousand) for the years ended December 31, 2002, 2003 and 2004, respectively.



Maintenance costs are fees, which relate to product version updates to enable product to cope
with newly prevailing computer viruses and bug fixing. The maintenance costs were (Yen)1,806,002 thousand, (Yen)2,193,624 thousand and (Yen)2,260,934 thousand, ($21,951 thousand) for the years ended December 31, 2002, 2003 and 2004, respectively.



Software development costs relating to the local language related functions
(representing software development costs as shown in consolidated balance sheets) after netting the related accumulated amortization, are capitalized and amortized to cost of sales as follows:



|                             |  |                          |  |                          |  |              |  |      |        
|---------------------------- |  | ------------------------ |  | ------------------------ |  | ------------ |  | ---- | -------
|                             |  | Years ended December 31, |  | Year endedDecember 31,  
|                             |  | 2002                     |  | 2003                     |  | 2004         |  | 2004
|                             |  | Thousands of yen         |  | Thousands ofU.S. dollars
|Software development costs:  |  |                          |  |                          |  |              |  |      |        
|Balance at beginning of year |  | (Yen)820,069             |  | (Yen)936,058             |  | (Yen)505,616 |  | $    | 4,909  
|Additions, at cost           |  | 1,025,516                |  | 788,760                  |  | 645,166      |  |      | 6,264  
|Amortization for the year    |  | (909,527)                |  | (1,219,202)              |  | (712,318)    |  |      | (6,916)
|                             |  |                          |  |                          |  |              |  |      |        
|Balance at end of year       |  | (Yen)936,058             |  | (Yen)505,616             |  | (Yen)438,464 |  | $    | 4,257  
|                             |  |                          |  |                          |  |              |  |      |        



F-20



---

11. Other intangibles



Other intangibles comprise the following:



|                              |  |                  |  |                          |  |      |        
|----------------------------- |  | ---------------- |  | ------------------------ |  | ---- | -------
|                              |  | December 31,     |  | December 31,            
|                              |  | 2003             |  | 2004                     |  | 2004
|                              |  | Thousands of yen |  | Thousands ofU.S. dollars
|Purchased software            |  | (Yen)918,069     |  | (Yen)1,147,237           |  | $    | 11,138 
|Other                         |  | 145,084          |  | 145,084                  |  |      | 1,409  
|                              |  |                  |  |                          |  |      |        
|                              |  | 1,063,153        |  | 1,292,321                |  |      | 12,547 
|LessAccumulated amortization |  | (751,397)        |  | (995,953)                |  |      | (9,670)
|                              |  |                  |  |                          |  |      |        
|                              |  | (Yen)311,756     |  | 296,368                  |  | $    | 2,877  
|                              |  |                  |  |                          |  |      |        



The estimated aggregate amortization
expense for intangible assets during each of the five years in the period ending December 31, 2009 are as follows:



|                         |  |                  |  |                          |      
|------------------------ |  | ---------------- |  | ------------------------ | -----
|                         |  | Thousands of yen |  | Thousands ofU.S. dollars
|Year ending December 31: |  |                  |  |                          |      
|2005                     |  | (Yen)153,452     |  | $                        | 1,490
|2006                     |  | 96,309           |  |                          | 935  
|2007                     |  | 19,162           |  |                          | 186  
|2008                     |  | 5,412            |  |                          | 53   
|2009                     |  | 1,645            |  |                          | 16   



F-21



---

12. Short-term borrowings and long-term debt



At December 31, 2004, the Company has unused Yen denominated lines of credit amounting to (Yen) 700,000 thousand ($6,796 thousand) relating
to bank overdraft and other short-term loan agreements. Under these overdraft agreements, the Company is authorized to obtain short-term financing at prevailing interest rates for periods not in excess of one year.



Long-term debt comprises the following:



|                                                         |  |                  |  |                          |  |      |         
|-------------------------------------------------------- |  | ---------------- |  | ------------------------ |  | ---- | --------
|                                                         |  | December 31,     |  | December 31,            
|                                                         |  | 2003             |  | 2004                     |  | 2004
|                                                         |  | Thousands of yen |  | Thousands ofU.S. dollars
|Bonds:                                                   |  |                  |  |                          |  |      |         
|Unsecured 1.75% bonds, due 2004 with detachable warrants |  | (Yen)5,000,000   |  | (Yen)                   |  | $    |        
|Unsecured 1.50% bonds, due 2004 with detachable warrants |  | 1,500,000        |  |                         |  |      |        
|Unsecured 1.75% bonds, due 2004 with detachable warrants |  | 6,000,000        |  |                         |  |      |        
|Unsecured 1.9 % bonds, due 2006 with detachable warrants |  | 4,000,000        |  | 4,000,000                |  |      | 38,835  
|                                                         |  |                  |  |                          |  |      |         
|                                                         |  | 16,500,000       |  | 4,000,000                |  |      | 38,835  
|Lesstreasury bonds:                                     |  |                  |  |                          |  |      |         
|Unsecured 1.75% bonds, due 2004 with detachable warrants |  | (6,000,000)      |  |                         |  |      |        
|Unsecured 1.9% bonds, due 2006 with detachable warrants  |  | (4,000,000)      |  | (4,000,000)              |  |      | (38,835)
|                                                         |  |                  |  |                          |  |      |         
|                                                         |  | 6,500,000        |  |                         |  |      |        
|Lessportion due within one year:                        |  | (6,500,000)      |  |                         |  |      |        
|                                                         |  |                  |  |                          |  |      |         
|                                                         |  | (Yen)           |  | (Yen)                   |  | $    |        
|                                                         |  |                  |  |                          |  |      |         



Based on the Companys incentive
plans, the parent company issued unsecured bonds with detachable warrants and bought all of the warrants at the same time for the purpose of distributing such instruments to the directors and certain employees of the parent company and its
subsidiaries as a part of their remuneration.



The Japanese Commercial Code
restricts redemptions and extinguishments of these bonds in case the amount of each outstanding bond is less than the aggregate amount of the exercise price of each outstanding warrant. Therefore, in order to reduce interest costs, the parent
company repurchased a part of the bonds through the market with an intention to hold the treasury bonds until they can be extinguished legally. However, as the repurchase transaction is deemed as redemption of the bonds in substance, the treasury
bonds are offset with the bonds on the face of consolidated balance sheets. There was no repurchase transaction for the year ended December 31, 2003 and 2004. (Yen) 12,500,000 thousand of the bonds was redeemed during the year ended December 31,
2004.



F-22



---

13. Stock Option



Based on the Companys 2001 and 2002 incentive plans, the Company issued the following bonds with detachable warrants to the public.



|    |  |                                             |  |                                     |  |                              |  |                                       |  |                               
|--- |  | ------------------------------------------- |  | ----------------------------------- |  | ---------------------------- |  | ------------------------------------- |  | ------------------------------
|1.  |  | Board meeting approval                      |  | February 15, 2001 February 23,
2001 |  | May 8, 2001 May 16, 2001     |  | October 25, 2001 November 1, 2001     |  | March 26, 2002April 2, 2002   
|    |  |                                             |  |                                     | 
|2.  |  | Date of bond issuance                       |  | March 19, 2001                      |  | June 4, 2001                 |  | November 19, 2001                     |  | April 18, 2002                
|    |  |                                             |  |                                     | 
|3.  |  | Maturity date                               |  | March 19, 2004                      |  | June 4, 2004                 |  | November 19, 2004                     |  | April 18, 2006                
|    |  |                                             |  |                                     | 
|4.  |  | Amount of each bond (Thousands of yen)      |  | (Yen)5,000,000                      |  | (Yen)1,500,000               |  | (Yen)6,000,000                        |  | (Yen)4,000,000                
|    |  |                                             |  |                                     | 
|5.  |  | Issued to                                   |  | Public                              |  | Public                       |  | Public                                |  | Public                        
|    |  |                                             |  |                                     | 
|6.  |  | Date on which the bonds were fully redeemed |  | March 19, 2004                      |  | June 4, 2004                 |  | November 19, 2004                     |  |                              
|    |  |                                             |  |                                     | 
|7.  |  | Exercise price per each warrant             |  | (Yen)5,675                          |  | (Yen)5,760                   |  | (Yen)2,590                            |  | (Yen)3,450                    
|    |  |                                             |  |                                     | 
|8.  |  | Warrant exercise period                     |  | April 12, 2001 to March 12, 2004    |  | May 17, 2002 to May 28,
2004 |  | November 2, 2002 to November 12,
2004 |  | April 3, 2003 toApril 11, 2006
|    |  |                                             |  |                                     | 
|9.  |  | Number of shares represented by warrants    |  | 881,057                             |  | 260,416                      |  | 2,316,602                             |  | 1,159,420                     
|    |  |                                             |  |                                     | 
|10. |  | Outstanding as of December 31, 2002         |  | 873,128                             |  | 256,076                      |  | 2,315,057                             |  | 1,158,840                     
|    |  |                                             |  |                                     | 
|11. |  | Outstanding as of December 31, 2003         |  | 873,128                             |  | 256,076                      |  | 2,264,864                             |  | 1,158,840                     
|    |  |                                             |  |                                     | 
|12. |  | Outstanding as of December 31, 2004         |  |                                    |  |                             |  |                                      |  | 737,391                       



Upon issuance of each bond, the
Company bought all of the warrants and distributed such instruments to the directors and certain employees of the Company and its subsidiaries as a part of their remuneration.



These transactions were accounted for as issuance of debt to the public, as an issuance of warrants to the directors and certain employees
of the Company and its subsidiaries. The issuance of warrants to the directors and employees was accounted for under APB 25.



Warrant activity was as follows:



|                                                |  |                                           
|----------------------------------------------- |  | ------------------------------------------
|                                                |  | Thousands of sharesrepresented by warrants
|Outstanding at December 31, 2001                |  | 6,292                                     
|Granted                                         |  | 1,159                                     
|Exercised                                       |  | 451                                       
|Redeemed                                        |  | 1,759                                     
|Cancelled                                       |  | 1                                         
|Outstanding at December 31, 2002                |  | 5,240                                     
|Granted                                         |  |                                          
|Exercised                                       |  | 50                                        
|Redeemed                                        |  | 637                                       
|Cancelled                                       |  |                                          
|Outstanding at December 31, 2003                |  | 4,553                                     
|Granted                                         |  |                                          
|Exercised                                       |  | 2,018                                     
|Redeemed                                        |  | 1,798                                     
|Cancelled                                       |  |                                          
|Outstanding at December 31, 2004                |  | 737                                       
|                                                |  |                                           
|Exercisable Stock warrants at December 31, 2004 |  | 435                                       



The grants of March 19, 2001, June 4,
2001, November 19, 2001 and April 18, 2002 did not result in deferred compensation.



Based on the resolution at the shareholders meeting on March 27, 2001, the Company introduced an incentive stock option plan as subscription right method, which qualified under Article 280-19 of the unrevised Japanese Commercial Code.
In accordance with the terms of this plan, the Company granted options to purchase up to 724,500 shares of the Companys common stock to certain directors and employees of the Company and its subsidiaries on May 16, 2001. The options granted
are exercisable from April 1, 2002 through March 31, 2009 originally. However, based on actual contract with employees, all options based on this plan were substantially redeemed within the year ended December 31, 2004. Option activity under this
plan was as follows:



|                                                     |  |                                          
|---------------------------------------------------- |  | -----------------------------------------
|                                                     |  | Thousands of sharesrepresented by options
|Outstanding at December 31, 2001                     |  | 707                                      
|Granted                                              |  |                                         
|Exercised                                            |  |                                         
|Redeemed                                             |  |                                         
|Cancelled                                            |  |                                         
|Outstanding at December 31, 2002                     |  | 707                                      
|Granted                                              |  |                                         
|Exercised                                            |  |                                         
|Redeemed                                             |  |                                         
|Cancelled                                            |  |                                         
|Outstanding at December 31, 2003                     |  | 707                                      
|Granted                                              |  |                                         
|Exercised                                            |  |                                         
|Redeemed                                             |  | 707                                      
|Cancelled                                            |  |                                         
|Outstanding at December 31, 2004                     |  |                                         
|                                                     |  |                                          
|Exercisable subscription rights at December 31, 2004 |  |                                         



F-23



---

The grants of options to the directors and employees were accounted for under APB No.25. The exercise price per share for
the options granted of (Yen)5,760 was determined as equivalent to the fair market value of the Companys share at the time of the grants. Consequently, the grant of the options did not result in deferred compensation.



Based on the resolution of the extraordinary general shareholders meeting of the
Company on September 12, 2002, Trend Micro adopted at the meeting of the board of directors on February 4, 2003 the following resolutions regarding Stock acquisition rights to be issued to the directors and employees of the Company and its
subsidiaries in order to introduce the stock option plan. In accordance with the terms of this plan, the Company granted options to purchase up to 1,999,500 shares of the Companys common stock to certain directors and employees of the Company
and its subsidiaries on February 12, 2003. The options granted are exercisable from November 1, 2003 through October 31, 2007.



Based on the resolution of the fourteenth ordinary general shareholders meeting of the Company on March 26, 2003, Trend Micro adopted at the meeting of the board of
directors on May 20, 2003 the following resolutions regarding Stock acquisition rights to be issued to the directors and employees of the Company and its subsidiaries in order to introduce the stock option plan. In accordance with the terms of this
plan, the Company granted options to purchase up to 2,500,000 shares of the Companys common stock to certain directors and employees of the Company and its subsidiaries on May 28, 2003. The options granted are exercisable from May 28, 2004
through May 27, 2008.



Based on the resolution of the fourteenth ordinary
general shareholders meeting of the Company on March 26, 2003, Trend Micro adopted at the meeting of the board of directors on November 6, 2003 the following resolutions regarding Stock acquisition rights to be issued to the directors and
employees of the Company and its subsidiaries in order to introduce the stock option plan. In accordance with the terms of this plan, the Company granted options to purchase up to 1,500,000 shares of the Companys common stock to certain
directors and employees of the Company and its subsidiaries on November 14, 2003. The options granted are exercisable from November 14, 2004 through November 13, 2008.



Based on the resolution of the fifteenth ordinary general shareholders meeting of the Company on March 25, 2004, Trend Micro adopted
at the meeting of the board of directors on April 20, 2004 the following resolutions regarding Stock acquisition rights to be issued to the directors and employees of the Company and its subsidiaries in order to introduce the stock option plan. In
accordance with the terms of this plan, the Company granted options to purchase up to 3,000,000 shares of the Companys common stock to certain directors and employees of the Company and its subsidiaries on April 28, 2004. The options granted
are exercisable from April 28, 2005 through April 27, 2009.



Based on the
resolution of the fifteenth ordinary general shareholders meeting of the Company on March 25, 2004, Trend Micro adopted at the meeting of the board of directors on October 20, 2004 the following resolutions regarding Stock acquisition rights
to be issued to the directors and employees of the Company and its subsidiaries in order to introduce the stock option plan. In accordance with the terms of this plan, the Company granted options to purchase up to 2,000,000 shares of the
Companys common stock to certain directors and employees of the Company and its subsidiaries on October 28, 2004. The options granted are exercisable from October 28, 2005 through October 27, 2009.



Option activity under this plan was as follows:



|                                                          |  |                                          
|--------------------------------------------------------- |  | -----------------------------------------
|                                                          |  | Thousands of sharesrepresented by options
|Outstanding at December 31, 2002                          |  |                                         
|Granted                                                   |  | 6,000                                    
|Exercised                                                 |  | 67                                       
|Redeemed                                                  |  |                                         
|Cancelled                                                 |  |                                         
|Outstanding at December 31, 2003                          |  | 5,933                                    
|Granted                                                   |  | 5,000                                    
|Exercised                                                 |  | 1,390                                    
|Redeemed                                                  |  |                                         
|Cancelled                                                 |  | 506                                      
|Outstanding at December 31, 2004                          |  | 9,037                                    
|                                                          |  |                                          
|Exercisable Stock acquisition rights at December 31, 2004 |  | 1,288                                    



The grants of Stock acquisition
rights to the directors and employees were accounted for under APB No.25. The exercise price per share for the rights granted of (Yen)2,230 issued on February 12, 2003 , (Yen)1,955 issued on May 28, 2003, (Yen) 2,695 issued on November 14, 2003,
(Yen)4,310 issued on April 28, 2004 and (Yen)5,090 issued on October 28, 2004 was determined as equivalent to the fair market value of the Companys shares at the time of the grants. Consequently, the grant of the Stock acquisition rights did
not result in deferred compensation.



F-24



---

14. Employee benefit plans



Pension and severance plans



The parent company has an unfunded retirement allowance plan (Plan) covering substantially all of its employees who meet eligibility
requirements under the Plan. Under the Plan, employees whose service with the company is terminated are, under most circumstances, entitled to lump-sum severance indemnities, determined by reference to current basic rate of pay, length of service
and conditions under which the termination occurs.



Additionally, the parent company has been a member of the Tokyo Small Computer Software Industry Welfare pension plan, which is categorized as a multi-employer pension plan. Total pension expense for this multi-employer pension plan was
(Yen) 68,981 thousand in 2002, (Yen) 84,824 thousand in 2003 and (Yen) 83,833 thousand ($814 thousand) in 2004, respectively.



Effective from March 1, 1998, the Taiwan subsidiary introduced a defined benefit pension plan, which covers substantially all of its employees. Under the
plan, only employees who are 55 years or older with services for more than 15 years or who have been employed for more than 25 years at the retirement date are entitled to receive benefits. Benefits awarded under the plan are based primarily on
current rate of pay and length of service.



Effective from
July 1, 1998, the parent companys U.S. subsidiary has a 401(k) retirement plan, which covers substantially all of its employees. Under the plan, employees contribute a certain percentage of their pre-tax salary up to the maximum dollar
limitation prescribed by the United States Internal Revenue Code.



Certain other subsidiaries have defined benefit pension plans or retirement plans, which cover substantially all of their employees, under which the cost of benefits is currently funded or accrued. Benefits awarded under these plans are
based primarily on current rate of pay and length of service.



Information
regarding the Japanese defined benefit pension plans of the Company based on unfunded plan is shown below:



|                                            |  |                  |  |                          |  |      |      
|------------------------------------------- |  | ---------------- |  | ------------------------ |  | ---- | -----
|                                            |  | December 31,     |  | December 31,            
|                                            |  | 2003             |  | 2004                     |  | 2004
|                                            |  | Thousands of yen |  | Thousands ofU.S. dollars
|Change in benefit obligation:               |  |                  |  |                          |  |      |      
|Benefit obligation at beginning of year     |  | (Yen)321,135     |  | (Yen)437,883             |  | $    | 4,251
|Service cost                                |  | 131,173          |  | 143,711                  |  |      | 1,395
|Interest cost                               |  | 4,997            |  | 6,383                    |  |      | 62   
|Actuarial (gain)/loss                       |  | 12,014           |  | (73,381)                 |  |      | (712)
|Benefits paid                               |  | (31,436)         |  | (47,025)                 |  |      | (456)
|                                            |  |                  |  |                          |  |      |      
|Projected benefit obligation at end of year |  | 437,883          |  | 467,571                  |  |      | 4,540
|                                            |  |                  |  |                          |  |      |      
|Unrecognized net actuarial gain/(loss)      |  | (48,741)         |  | 30,498                   |  |      | 296  
|Unrecognized net transition obligation      |  | (311)            |  |                         |  |      |     
|                                            |  |                  |  |                          |  |      |      
|Accrued benefit cost                        |  | (Yen)388,831     |  | (Yen)498,069             |  | $    | 4,836
|                                            |  |                  |  |                          |  |      |      



F-25



---

|                                                   |  |                          |  |                          |  |              |  |      |      
|-------------------------------------------------- |  | ------------------------ |  | ------------------------ |  | ------------ |  | ---- | -----
|                                                   |  | Years ended December 31, |  | Year endedDecember 31,  
|                                                   |  | 2002                     |  | 2003                     |  | 2004         |  | 2004
|                                                   |  | Thousands of yen         |  | Thousands ofU.S. dollars
|Components of net periodic benefit cost:           |  |                          |  |                          |  |              |  |      |      
|Service cost                                       |  | (Yen)99,134              |  | (Yen)131,173             |  | (Yen)143,711 |  | $    | 1,395
|Interest cost                                      |  | 5,238                    |  | 4,997                    |  | 6,383        |  |      | 62   
|Amortization of unrecognized transition obligation |  | 1,112                    |  | 1,112                    |  | 311          |  |      | 3    
|Recognized actuarial loss                          |  |                         |  | 2,323                    |  |             |  |      |     
|                                                   |  |                          |  |                          |  |              |  |      |      
|Net periodic pension cost                          |  | (Yen)105,484             |  | (Yen)139,605             |  | (Yen)150,405 |  | $    | 1,460
|                                                   |  |                          |  |                          |  |              |  |      |      



|                               |  |                          |  |                          |  |      |      
|------------------------------ |  | ------------------------ |  | ------------------------ |  | ---- | -----
|                               |  | Years ended December 31,
|                               |  | 2003                     |  | 2004                     |  | 2004
|                               |  | Thousands of yen         |  | Thousands ofU.S. dollars
|Accumulated benefit obligation |  | (Yen)253,842             |  | (Yen)309,559             |  | $    | 3,005



|                                                                  |  |              |   |  |      |  
|----------------------------------------------------------------- |  | ------------ | - |  | ---- | -
|                                                                  |  | December 31, |  
|                                                                  |  | 2003         |   |  | 2004 |  
|Assumptions used to determine benefit obligations at December 31: |  |              |   |  |      |  
|Discount rate                                                     |  | 1.50         | % |  | 1.50 | %
|Rate of compensation increase                                     |  | 5.50         | % |  | 5.50 | %



|                                                                                     |  |              |   |  |      |   |  |      |  
|------------------------------------------------------------------------------------ |  | ------------ | - |  | ---- | - |  | ---- | -
|                                                                                     |  | December 31, |  
|                                                                                     |  | 2002         |   |  | 2003 |   |  | 2004 |  
|Assumptions used to determine net periodic benefit cost for years ended December 31: |  |              |   |  |      |   |  |      |  
|Discount rate                                                                        |  | 2.50         | % |  | 2.00 | % |  | 1.50 | %
|Rate of compensation increase                                                        |  | 5.50         | % |  | 5.50 | % |  | 5.50 | %



F-26



---

The following benefit payments, which reflected expected future service, as appropriate, are expected to be paid:



|                                                           |  |                  |  |                          |      
|---------------------------------------------------------- |  | ---------------- |  | ------------------------ | -----
|                                                           |  | Thousands of yen |  | Thousands ofU.S. dollars
|Estimated Future Benefit Payments Year ending December 31: |  |                  |  |                          |      
|2005                                                       |  | (Yen)37,674      |  | $                        | 366  
|2006                                                       |  | 48,494           |  |                          | 471  
|2007                                                       |  | 58,618           |  |                          | 569  
|2008                                                       |  | 65,238           |  |                          | 633  
|2009                                                       |  | 75,476           |  |                          | 733  
|2010-2014                                                  |  | 415,475          |  |                          | 4,034



The measurement date used to determine
above plans are November 30, 2003 and November 30, 2004, respectively.



Information regarding the defined benefit pension plans for consolidated foreign subsidiaries is shown below:



|                                               |  |                  |  |                          |  |      |        
|---------------------------------------------- |  | ---------------- |  | ------------------------ |  | ---- | -------
|                                               |  | December 31,     |  | December 31,            
|                                               |  | 2003             |  | 2004                     |  | 2004
|                                               |  | Thousands of yen |  | Thousands ofU.S. dollars
|Change in benefit obligation:                  |  |                  |  |                          |  |      |        
|Benefit obligation at beginning of year        |  | (Yen)252,669     |  | (Yen)296,439             |  | $    | 2,878  
|Service cost                                   |  | 51,978           |  | 78,024                   |  |      | 758    
|Interest cost                                  |  | 8,954            |  | 9,220                    |  |      | 90     
|Amendments                                     |  | 33,127           |  |                         |  |      |       
|Actuarial (gain)/loss                          |  | (46,388)         |  | 56,903                   |  |      | 552    
|Benefits paid                                  |  |                 |  | (2,516)                  |  |      | (25)   
|Foreign currency exchange impact               |  | (3,901)          |  | 4,646                    |  |      | 45     
|                                               |  |                  |  |                          |  |      |        
|Projected benefit obligation at end of year    |  | 296,439          |  | 442,716                  |  |      | 4,298  
|                                               |  |                  |  |                          |  |      |        
|Change in plan assets:                         |  |                  |  |                          |  |      |        
|Fair value of plan assets at beginning of year |  | (76,947)         |  | (95,322)                 |  |      | (925)  
|Actual return on plan assets                   |  | (1,163)          |  | (1,305)                  |  |      | (13)   
|Employer contribution                          |  | (23,864)         |  | (28,637)                 |  |      | (278)  
|Benefit paid                                   |  |                 |  | 2,516                    |  |      | 25     
|Foreign currency exchange impact               |  | 6,652            |  | (1,804)                  |  |      | (18)   
|                                               |  |                  |  |                          |  |      |        
|Fair value of plan assets at end of year       |  | (95,322)         |  | (124,552)                |  |      | (1,209)
|                                               |  |                  |  |                          |  |      |        
|Funded status                                  |  | 201,117          |  | 318,164                  |  |      | 3,089  
|Unrecognized prior service cost                |  | (51,379)         |  | (49,923)                 |  |      | (485)  
|Unrecognized net actuarial loss                |  | (51,160)         |  | (110,269)                |  |      | (1,070)
|                                               |  |                  |  |                          |  |      |        
|Accrued benefit cost                           |  | (Yen)98,578      |  | (Yen)157,972             |  | $    | 1,534  
|                                               |  |                  |  |                          |  |      |        



F-27



---

|                                         |  |                          |   |  |                          |   |  |             |   |  |      |     |  
|---------------------------------------- |  | ------------------------ | - |  | ------------------------ | - |  | ----------- | - |  | ---- | --- | -
|                                         |  | Years ended December 31, |   |  | Year endedDecember 31,   |  
|                                         |  | 2002                     |   |  | 2003                     |   |  | 2004        |   |  | 2004 |    
|                                         |  | Thousands of yen         |   |  | Thousands ofU.S. dollars |  
|Components of net periodic benefit cost: |  |                          |   |  |                          |   |  |             |   |  |      |     |  
|Service cost                             |  | (Yen)7,038               |   |  | (Yen)51,978              |   |  | (Yen)78,024 |   |  | $    | 758 |  
|Interest cost                            |  | 7,276                    |   |  | 8,954                    |   |  | 9,220       |   |  |      | 90  |  
|Expected return on plan assets           |  | (3,334                   | ) |  | (3,450                   | ) |  | (3,614      | ) |  |      | (35 | )
|Amortization of prior service cost       |  | 1,154                    |   |  | 1,072                    |   |  | 2,444       |   |  |      | 23  |  
|Recognized actuarial loss                |  | 760                      |   |  | 2,425                    |   |  | 1,004       |   |  |      | 9   |  
|                                         |  |                          |   |  |                          |   |  |             |   |  |      |     |  
|Net periodic pension cost                |  | (Yen)12,894              |   |  | (Yen)60,979              |   |  | (Yen)87,078 |   |  | $    | 845 |  
|                                         |  |                          |   |  |                          |   |  |             |   |  |      |     |  



|                               |  |                          |  |                          |  |      |      
|------------------------------ |  | ------------------------ |  | ------------------------ |  | ---- | -----
|                               |  | Years ended December 31,
|                               |  | 2003                     |  | 2004                     |  | 2004
|                               |  | Thousands of yen         |  | Thousands ofU.S. dollars
|Accumulated benefit obligation |  | (Yen)152,626             |  | (Yen)209,810             |  | $    | 2,037



|                                                                  |  |              |   |  |      |  
|----------------------------------------------------------------- |  | ------------ | - |  | ---- | -
|                                                                  |  | December 31, |  
|                                                                  |  | 2003         |   |  | 2004 |  
|Assumptions used to determine benefit obligations at December 31: |  |              |   |  |      |  
|Discount rate                                                     |  | 3.25         | % |  | 3.25 | %
|Rate of compensation increase                                     |  | 3.75         | % |  | 4.00 | %



|                                                                                     |  |              |   |  |      |   |  |      |  
|------------------------------------------------------------------------------------ |  | ------------ | - |  | ---- | - |  | ---- | -
|                                                                                     |  | December 31, |  
|                                                                                     |  | 2002         |   |  | 2003 |   |  | 2004 |  
|Assumptions used to determine net periodic benefit cost for years ended December 31: |  |              |   |  |      |   |  |      |  
|Discount rate                                                                        |  | 5.00         | % |  | 4.00 | % |  | 3.25 | %
|Expected return on plan assets                                                       |  | 5.00         | % |  | 4.00 | % |  | 3.25 | %
|Rate of compensation increase                                                        |  | 5.50         | % |  | 4.50 | % |  | 3.75 | %



The measurement date used to determine
above plans are December 31, 2003 and December 31, 2004, respectively.



F-28



---

Asset Allocation



|                   |  |              
|------------------ |  | -------------
|                   |  | December 31, 
|                   |  | 2004         
|                   |  | Allocation(%)
|Type of investment |  |              
|Cash               |  | 44.71        
|Government Loan    |  | 12.39        
|Equity             |  | 26.82        
|Notes              |  | 14.66        
|Bonds              |  | 1.42         
|                   |  |              
|Total              |  | 100.00       



The Company has no control over the
investment, since a government appointed manager and custodian manages them. Expected return on assets of 3.25% used to determine net periodic benefit cost for years ended December 31, 2004 was determined based on the information provided by the
above-mentioned government appointed manager and custodian. Historical returns are taken into consideration.



The following benefit payments, which reflected expected future service, as appropriate, are expected to be paid:



|                                                           |  |                  |  |                          |    
|---------------------------------------------------------- |  | ---------------- |  | ------------------------ | ---
|                                                           |  | Thousands of yen |  | Thousands ofU.S. dollars
|Estimated Future Benefit Payments Year ending December 31: |  |                  |  |                          |    
|2005                                                       |  | (Yen)236         |  | $                        | 2  
|2006                                                       |  | 281              |  |                          | 3  
|2007                                                       |  | 6,089            |  |                          | 59 
|2008                                                       |  | 375              |  |                          | 4  
|2009                                                       |  | 433              |  |                          | 4  
|2010-2014                                                  |  | 17,022           |  |                          | 165



Under the Japanese Commercial Code and
local practice, the Company may make severance payments to a retired director or corporate auditor with shareholder approval when our management proposes such payments based on a resolution of our Board of Directors. The Company has an internal
formula to determine the amounts of severance payments to corporate auditors when the Company makes such a proposal for corporate auditors. The Company has not recorded any liabilities relating to severance payments to directors and corporate
auditors as of December 31, 2003 and 2004 because the Company has no liabilities to directors, and related liabilities to corporate auditors were insignificant.



Post-retirement benefits other than pensions and post-employment benefits



The Company does not provide health care or life insurance benefits to retired employees, nor does it provide benefits to
former or inactive employees after employment but before retirement.



F-29



---

15. Income taxes



Income before income taxes and provision for income taxes comprise the following:



|                            |  |                          |  |                          |  |                  |  |      |         
|--------------------------- |  | ------------------------ |  | ------------------------ |  | ---------------- |  | ---- | --------
|                            |  | Years ended December 31, |  | Year endedDecember 31,  
|                            |  | 2002                     |  | 2003                     |  | 2004             |  | 2004
|                            |  | Thousands of yen         |  | Thousands ofU.S. dollars
|Income before income taxes: |  |                          |  |                          |  |                  |  |      |         
|Domestic                    |  | (Yen)8,871,130           |  | (Yen)9,328,185           |  | (Yen)14,190,169  |  | $    | 137,768 
|Foreign subsidiaries        |  | 4,227,153                |  | 6,000,802                |  | 12,134,817       |  |      | 117,814 
|                            |  |                          |  |                          |  |                  |  |      |         
|                            |  | (Yen)13,098,283          |  | (Yen)15,328,987          |  | (Yen)26,324,986  |  | $    | 255,582 
|                            |  |                          |  |                          |  |                  |  |      |         
|Income taxes, current:      |  |                          |  |                          |  |                  |  |      |         
|Domestic                    |  | (Yen)5,275,060           |  | (Yen)6,531,627           |  | (Yen)9,814,296   |  | $    | 95,284  
|Foreign subsidiaries        |  | 1,663,396                |  | 905,949                  |  | 2,079,363        |  |      | 20,188  
|                            |  |                          |  |                          |  |                  |  |      |         
|                            |  | (Yen)6,938,456           |  | (Yen)7,437,576           |  | (Yen)11,893,659  |  | $    | 115,472 
|                            |  |                          |  |                          |  |                  |  |      |         
|Income taxes, deferred:     |  |                          |  |                          |  |                  |  |      |         
|Domestic                    |  | (Yen)(1,179,982)         |  | (Yen)(1,260,644)         |  | (Yen)(1,548,781) |  | $    | (15,037)
|Foreign subsidiaries        |  | (362,768)                |  | (74,354)                 |  | 158,394          |  |      | 1,538   
|                            |  |                          |  |                          |  |                  |  |      |         
|                            |  | (Yen)(1,542,750)         |  | (Yen)(1,334,998)         |  | (Yen)(1,390,387) |  | $    | (13,499)
|                            |  |                          |  |                          |  |                  |  |      |         



Reconciliation of the differences
between the statutory tax rate and the effective income tax rate is as follows:



|                                                               |  |                          |   |  |      |   |  |      |  
|-------------------------------------------------------------- |  | ------------------------ | - |  | ---- | - |  | ---- | -
|                                                               |  | Years ended December 31, |  
|                                                               |  | 2002                     |   |  | 2003 |   |  | 2004 |  
|Statutory tax rate:                                            |  | 42.1                     | % |  | 42.1 | % |  | 42.1 | %
|Increase (reduction) in rate resulting from                   |  |                          |   |  |      |   |  |      |  
|Different tax rates applied to foreign subsidiaries            |  | (2.4                     | ) |  | (1.3 | ) |  | (2.0 | )
|Effect of change in statutory tax rate                         |  |                         |   |  | 0.3  |   |  | 0.8  |  
|State income taxes, net of federal tax                         |  | 0.7                      |   |  | 0.4  |   |  | 0.3  |  
|Permanent difference                                           |  | 2.2                      |   |  | 1.5  |   |  | 0.6  |  
|Tax credit relating to Tax law applied to Parent company       |  |                         |   |  | (1.3 | ) |  | (1.2 | )
|Tax credit relating to Tax law applied to foreign subsidiaries |  | (0.9                     | ) |  | (1.1 | ) |  | (1.1 | )
|Other                                                          |  | (0.5                     | ) |  | (0.8 | ) |  | 0.4  |  
|Effective income tax rate                                      |  | 41.2                     | % |  | 39.8 | % |  | 39.9 | %



On March 31, 2003, in Japan, the Law
to Partially Revise the Local Tax Law was promulgated, which introduced the pro forma standard taxation system on April 1, 2004. As a result of the change in tax laws, a new statutory income tax rate was reduced to 40.7%. For the parent company,
this new statutory rate is effective from the fiscal year ending December 31, 2005. The Company recalculated deferred tax assets and liabilities for temporary differences scheduled to be realized after January 1st, 2005. Since in 2004 all of the
current portions of deferred tax assets and liabilities had an expected realization after the effective date of this new statutory rate, this recalculation composed the majority of Effect of change in statutory rate above.



F-30



---

The significant components of deferred income tax assets and liabilities at December 31, 2003 and 2004 were as follows:



|                                                  |  |                  |  |                          |  |      |        
|------------------------------------------------- |  | ---------------- |  | ------------------------ |  | ---- | -------
|                                                  |  | December 31,     |  | December 31,            
|                                                  |  | 2003             |  | 2004                     |  | 2004
|                                                  |  | Thousands of yen |  | Thousands ofU.S. dollars
|Deferred tax assets:                              |  |                  |  |                          |  |      |        
|Deferred revenue                                  |  | (Yen)4,344,292   |  | (Yen)5,637,865           |  | $    | 54,737 
|Allowance for doubtful accounts and sales returns |  | 319,280          |  | 242,803                  |  |      | 2,357  
|Accrued enterprise tax                            |  | 357,846          |  | 579,418                  |  |      | 5,625  
|Accrued liabilities                               |  | 257,672          |  | 524,571                  |  |      | 5,093  
|Tax loss carry forward                            |  | 89,674           |  | 62,652                   |  |      | 608    
|Amortization of intangibles                       |  | 509,086          |  | 388,305                  |  |      | 3,770  
|Impairment of securities investments              |  | 242,676          |  | 242,676                  |  |      | 2,356  
|Other                                             |  | 739,463          |  | 423,910                  |  |      | 4,116  
|                                                  |  |                  |  |                          |  |      |        
|Gross deferred tax assets                         |  | 6,859,989        |  | 8,102,200                |  |      | 78,662 
|Less: Valuation allowance                         |  | (158,842)        |  | (181,457)                |  |      | (1,761)
|                                                  |  |                  |  |                          |  |      |        
|                                                  |  | (Yen)6,701,147   |  | (Yen)7,920,743           |  | $    | 76,901 
|                                                  |  |                  |  |                          |  |      |        



Deferred tax assets are included in
the consolidated balance sheets as follows:



|                                                  |  |                  |  |                          |  |      |       
|------------------------------------------------- |  | ---------------- |  | ------------------------ |  | ---- | ------
|                                                  |  | December 31,     |  | December 31             
|                                                  |  | 2003             |  | 2004                     |  | 2004
|                                                  |  | Thousands of yen |  | Thousands ofU.S. dollars
|Current assetsDeferred income taxes              |  | (Yen)4,894,387   |  | (Yen)6,224,972           |  | $    | 60,437
|Investment and other assetsDeferred income taxes |  | 1,806,760        |  | 1,695,771                |  |      | 16,464
|                                                  |  |                  |  |                          |  |      |       
|Deferred tax assets                               |  | (Yen)6,701,147   |  | (Yen)7,920,743           |  | $    | 76,901
|                                                  |  |                  |  |                          |  |      |       



The valuation allowance mainly relates
to deferred tax assets of consolidated subsidiaries with operating loss carry forwards for tax purposes that are not expected to be realized. The net changes in the total valuation allowance for the years ended December 31, 2002, 2003 and 2004 were
a decrease of (Yen) 17,020 thousand, a decrease of (Yen) 31,237 thousand and a decrease of (Yen) 22,615 thousand ($ 220 thousand), respectively.



Operating loss carryforwards for tax purposes of consolidated subsidiaries at December 31, 2004 amounted to approximately (Yen) 212,609 thousand ($2,064 thousand) and are
available as an offset against future taxable income of the subsidiary. These carryforwards expire at various dates up to December 31, 2008. Realization is dependent on these subsidiaries generating sufficient taxable income prior to expiration of
the loss carryforwards. Although realization is not assured, management believes it is more likely than not that all of the deferred tax assets, less the valuation allowance, will be realized. The amount of such net deferred tax assets considered
realizable, however, could change in the near term if estimates of future taxable income during the carry forward period change.



At December 31, 2004, no deferred income taxes have been provided on undistributed earnings of foreign subsidiaries not expected to be remitted in the foreseeable future
totaling (Yen) 12,554,964 thousand ($121,893 thousand), as management of the Company intends to reinvest undistributed earnings of the Companys foreign subsidiaries. The unrecognized deferred tax liabilities as of December 31, 2004 for such
undistributed earnings amounted to (Yen) 2,342,310 thousand ($ 22,741 thousand).



F-31



---

16. Shareholders equity



Changes in the number of shares of common stock issued have resulted from the following:



|                                                                 |  |                          |  |             |  |            
|---------------------------------------------------------------- |  | ------------------------ |  | ----------- |  | -----------
|                                                                 |  | Years ended December 31,
|                                                                 |  | 2002                     |  | 2003        |  | 2004       
|Shares of common stock issued:                                   |  |                          |  |             |  |            
|Balance at beginning of year                                     |  | 132,052,284              |  | 132,503,417 |  | 132,620,100
|Exercise of stock purchase warrants and stock acquisition rights |  | 451,133                  |  | 116,683     |  | 3,135,772  
|                                                                 |  |                          |  |             |  |            
|Balance at end of year                                           |  | 132,503,417              |  | 132,620,100 |  | 135,755,872
|                                                                 |  |                          |  |             |  |            



Upon exercise of stock warrants,
195,000 shares of common stock at an exercise price of (Yen)142.5 per share, 254,589 shares of common stock at an exercise price of (Yen)3,200 per share and 1,544 shares of common stock at an exercise price of (Yen)2,590 per share were issued and
the common stock account and the additional paid-in capital account of the Company increased by (Yen)423,382 thousand and (Yen)423,369 thousand, respectively, in the year ended December 31, 2002.



Upon exercise of stock warrants and stock acquisition rights, 50,183 shares of common stock
at an exercise price of (Yen)2,590 per share and 66,500 shares of common stock at an exercise price of (Yen)2,230 per share were issued and the common stock account and the additional paid-in capital account of the Company increased by (Yen)139,134
thousand and (Yen)139,135 thousand, respectively, in the year ended December 31, 2003.



Upon exercise of stock warrants and stock acquisition rights, 1,596,630shares of common stock at an exercise price of (Yen)2,590 per share, 421,142shares of common stock at an exercise price of (Yen)3,450 per share, 534,000 shares of common
stock at an exercise price of (Yen)2,230 per share, 394,500 shares of common stock at an exercise price of (Yen)1,955 per share, and 189,500shares of common stock at an exercise price of (Yen)2,695 per share were issued and the common stock account
and the additional paid-in capital account of the Company increased by (Yen)4,030,783 thousand ($39,134 thousand) and (Yen)4,030,198 thousand ($39,128 thousand), respectively, in the year ended December 31, 2004.



Under the Japanese Commercial Code, the amount available for dividends is based on retained
earnings as recorded in the books of the Company prepared in accordance with Japanese Commercial Code requirements. However, certain adjustments, not recorded in the Companys books, are reflected in the financial statements as described in
Note 2.



The Japanese Commercial Code provides that an amount equal to at least
10% of cash dividends and other distributions from retained earnings paid by the parent company and its Japanese subsidiaries be appropriated as a legal reserve. Prior to the amendments to the Japanese Commercial Code in 2001, no further
appropriation was required when the legal reserve equals 25% of the stated capital. However, as a result of the amendments effective from October 1, 2001, no further appropriation is required when the aggregated amount of the additional
paid-in-capital and the legal reserve equals 25% of the stated capital. The amounts of statutory retained earnings of the parent company available for the payment of dividends to stockholders as of December 31, 2003 and 2004 were (Yen) 14,830,214
thousand and (Yen)21,800,332 thousand ($211,654 thousand), respectively.



The
Japanese Commercial Code allows the Company to purchase treasury stock for any reason at any time by the resolution of the Board of Directors up to the limitation approved by the shareholders meeting. On March 26, 2002 and March 26, 2003, the
shareholders of the parent company approved to purchase treasury stock at maximum of 5.0 million shares and (Yen)5.7 billion, and 2.5 million shares and (Yen)5.0 billion until the resolution of next Ordinary General Shareholders Meeting,
respectively.



In September 2003, the Japanese Commercial Code was modified.
The new Japanese Commercial Code allows the Company to purchase treasury stock for any reason at any time by the resolution of the Board of Directors up to the limitation of statutory retained earnings of the parent company available for the payment
of interim dividends to stockholders. On March 25, 2004, the shareholders of the parent company approved to amend the articles of incorporation in order to apply this new rule.



The Company repurchased 902,292 shares as treasury stock and issued 272,500 shares of treasury stock in case of exercising stock warrants in
2004.



The Japanese Commercial Code permits a Company to distribute profits by
way of interim or year-end dividends under certain conditions.



Total
accumulated other comprehensive income as of December 31, 2003 and 2004 was a net debit balances of (Yen)429,981 thousand and a net debit balance of (Yen)322,115 thousand ($3,127 thousand), respectively.



F-32



---

17. Financial instruments



(1) Derivative instruments



The Company has a policy not to utilize any derivative financial instruments with off-balance sheet risk. In accordance with the policy, the parent company and its
subsidiaries did not employ any derivative financial instruments.



However,
ipTrend, which was acquired in 2000, had entered into an interest rate swap arrangement and a cap arrangement to manage its exposure to interest rate movements by effectively converting a portion of its debt from fixed to variable rates. Subsequent
to the acquisition in 2000, ipTrend repaid the underlying hedged debt without settling the interest rate swap and cap arrangements. In 2001, the parent company assumed an interest rate swap and cap arrangements upon the liquidation of ipTrend in
December 2001. Those arrangements, which did not qualify for hedge accounting, were marked to market with changes in value recognized in other income or expense.



At December 31, 2004, the notional principal amount of the interest rate swap arrangement was (Yen) 200,000 thousand, and the carrying
amount of the arrangement and the related fair value were credit balance of (Yen) 1,559 thousand ($15 thousand). The fair value of the interest rate swap arrangement is estimated based on the discounted amounts of future net cash flows. The interest
rate cap arrangement expired at May 2004 and the swap arrangement expired at January 2005.



(2) Fair value of financial instruments



Other than debt and equity securities, the fair value of which are disclosed in Marketable securities and securities investments, the Companys involvement in financial assets and liabilities with market risk is limited to
cash and cash equivalents, time deposits, notes and accounts receivable, trade, notes and accounts payable, trade, and long-term debt. The estimated fair value of cash and cash equivalents, time deposits, notes and accounts receivable, trade, and
notes and accounts payable, trade are carried at amounts, which approximate fair value. At December 31, 2003, the carrying amount and the estimated fair value of the current portion of the long-term debt are (Yen) 6,500,000 thousand and (Yen)
6,501,522 thousand, respectively. At December 31, 2004, there was substantially no long-term debt including the current portion. The fair value of the long-term debt, including the current portion, is estimated based on the discounted amounts of
future cash flows using the Companys current incremental debt rates for similar liabilities.



18. Advertising costs



Advertising
costs included in Operating expenses were (Yen) 2,507,735 thousand, (Yen) 2,511,704 thousand and (Yen) 3,452,434 thousand ($33,519 thousand) for the years ended December 31, 2002, 2003 and 2004, respectively.



19. Customer support costs



Customer support costs are primarily payroll, related expenses and outsourced customer
service fees, which relate to activities such as maintenance of customers database, education promotions to customers, investigation for appropriate customer support methodologies, responses to customers questions and sales promotions to
customers via telephone. Customer support costs in operating expenses were (Yen) 3,857,957 thousand, (Yen) 4,830,660 thousand and (Yen) 5,723,426 thousand, ($55,567 thousand) for the years ended December 31, 2002, 2003 and 2004, respectively.



20. Leases



Rental expenses under operating leases for the year ended December 31 2002, 2003 and 2004
were (Yen) 1,513,547 thousand, (Yen) 1,438,801 thousand, and (Yen) 1,396,590 thousand($13,559 thousand), respectively. The minimum rental payments required under operating leases that have initial or remaining non- cancelable lease terms at December
31, 2004 are as follows:



|                                    |  |                  |  |                          |       
|----------------------------------- |  | ---------------- |  | ------------------------ | ------
|                                    |  | Thousands of yen |  | Thousands ofU.S. dollars
|Year ending December 31:            |  |                  |  |                          |       
|2005                                |  | (Yen)575,135     |  | $                        | 5,584 
|2006                                |  | 313,011          |  |                          | 3,039 
|2007                                |  | 225,864          |  |                          | 2,193 
|2008                                |  | 221,817          |  |                          | 2,153 
|2009                                |  | 21,921           |  |                          | 213   
|                                    |  |                  |  |                          |       
|Total minimum future lease payments |  | (Yen)1,357,748   |  | $                        | 13,182
|                                    |  |                  |  |                          |       



21. Commitments and contingent
liabilities



The Company provides a service based on Service level
agreement (the Agreement) where the Company guarantees a certain level of services rendered to customers. The Company is required to pay penalties up to the limited amounts defined in the Agreement if the Company cannot perform the
services as specified in the Agreement. The Company has established (Yen)47,419 thousand of reserves for specific liabilities, as of December 31, 2003 in connection with the Agreement that we currently deem to be probable and estimable. Based on
yearly experiences of payment, the Company has established no liabilities for specific liabilities as of December 31, 2004.



F-33



---

22. Segment Information



The Company has been specializing in the Security software business.



The Company discloses Operating Segment information as required by FAS 131 Disclosures about Segments of an Enterprise and Related
Information. The information now provided to the chief operating decision maker for assessing the Companys performance includes 5 regional segments and a corporate segment. The five operating segments by region are Japan, North America,
Europe, Asia Pacific and Latin America. The other operating segment is Corporate, which is comprised of Research and development, Marketing, Customer support and Administrative departments that operate and bring benefits to the Company worldwide.



Below is summarized information of our operating segments sales,
operating income (loss) and total assets. Corporate assets are mainly cash, marketable securities, and software used to develop our products. These figures comply with the accounting policies disclosed in the Notes to these consolidated financial
statements.



|                                 |  |                        |              |                           |       |                          |  |       |              |  |   |          
|-------------------------------- |  | ---------------------- | ------------ | ------------------------- | ----- | ------------------------ |  | ----- | ------------ |  | - | ---------
|                                 |  | Year ended December 31 |              | Year endedDecember 31,   
|                                 |  | 2002                   |              | 2003                      |       | 2004                     |  | 2004 
|                                 |  | Thousands of yen       |              | Thousands of U.S. dollars
|Net sales to external customers: |  |                        |              |                           |       |                          |  |       |              |  |   |          
|Japan                            |  | (Yen)                  | 18,346,779   |                           | (Yen) | 20,052,478               |  | (Yen) | 25,443,297   |  | $ | 247,022  
|North America                    |  |                        | 9,215,591    |                           |       | 9,633,103                |  |       | 11,891,452   |  |   | 115,451  
|Europe                           |  |                        | 9,807,095    |                           |       | 12,138,158               |  |       | 16,417,611   |  |   | 159,394  
|Asia Pacific                     |  |                        | 4,208,527    |                           |       | 4,809,092                |  |       | 6,304,675    |  |   | 61,211   
|Latin America                    |  |                        | 1,401,645    |                           |       | 1,455,516                |  |       | 1,992,219    |  |   | 19,342   
|Corporate                        |  |                        |             |                           |       |                         |  |       |             |  |   |         
|                                 |  |                        |              |                           |       |                          |  |       |              |  |   |          
|Consolidated Total               |  | (Yen)                  | 42,979,637   |                           | (Yen) | 48,088,347               |  | (Yen) | 62,049,254   |  | $ | 602,420  
|                                 |  |                        |              |                           |       |                          |  |       |              |  |   |          
|Operating income (loss)          |  |                        |              |                           |       |                          |  |       |              |  |   |          
|Japan                            |  | (Yen)                  | 12,246,158   |                           | (Yen) | 12,740,687               |  | (Yen) | 16,599,993   |  | $ | 161,165  
|North America                    |  |                        | 5,789,640    |                           |       | 6,067,435                |  |       | 7,543,325    |  |   | 73,236   
|Europe                           |  |                        | 4,760,862    |                           |       | 5,606,304                |  |       | 9,732,567    |  |   | 94,491   
|Asia Pacific                     |  |                        | 626,866      |                           |       | 857,604                  |  |       | 1,678,826    |  |   | 16,299   
|Latin America                    |  |                        | 663,757      |                           |       | 728,786                  |  |       | 1,282,044    |  |   | 12,447   
|Corporate                        |  |                        | (10,221,165) |                           |       | (10,847,320)             |  |       | (10,759,079) |  |   | (104,457)
|                                 |  |                        |              |                           |       |                          |  |       |              |  |   |          
|Consolidated Total               |  | (Yen)                  | 13,866,118   |                           | (Yen) | 15,153,496               |  | (Yen) | 26,077,676   |  | $ | 253,181  
|                                 |  |                        |              |                           |       |                          |  |       |              |  |   |          
|                                 |  |                        |             
|                                 |  |                        |              | December 31,              |       | December 31,            
|                                 |  |                        |              | 2003                      |       | 2004                     |  | 2004 
|                                 |  |                        |              | Thousands of yen          |       | Thousands ofU.S. dollars
|Total assets                     |  |                        |              |                           |       |                          |  |       |              |  |   |          
|Japan                            |  |                        |              |                           | (Yen) | 33,985,731               |  | (Yen) | 49,204,224   |  | $ | 477,711  
|North America                    |  |                        |              |                           |       | 10,564,048               |  |       | 14,596,978   |  |   | 141,718  
|Europe                           |  |                        |              |                           |       | 12,003,990               |  |       | 18,610,466   |  |   | 180,684  
|Asia Pacific                     |  |                        |              |                           |       | 5,188,944                |  |       | 6,757,197    |  |   | 65,604   
|Latin America                    |  |                        |              |                           |       | 1,631,716                |  |       | 2,433,549    |  |   | 23,627   
|Corporate                        |  |                        |              |                           |       | 17,896,658               |  |       | 15,131,497   |  |   | 146,908  
|                                 |  |                        |              |                           |       |                          |  |       |              |  |   |          
|Consolidated Total               |  |                        |              |                           | (Yen) | 81,271,087               |  | (Yen) | 106,733,911  |  | $ | 1,036,252
|                                 |  |                        |              |                           |       |                          |  |       |              |  |   |          



Significant
customer



SOFTBANK COMMERCE whose name changed into
SOFTBANK BB in January 2003, an indirect wholly-owned subsidiary of SOFTBANK accounted for more than 10% of net sales to external customers for the years ended December 31, 2002, 2003 and 2004. Net sales to SOFTBANK and its affiliates for the years
ended December 31, 2002, 2003 and 2004 were (Yen) 10,130,276 thousand, (Yen) 9,204,071 thousand and (Yen) 10,396,225 thousand ($100,934 thousand), respectively.



F-34



---

23. Subsequent events



Potential Effect on Our Results of Operations from Distribution of a Defective Virus Pattern File in April 2005



On April 23, the Company distributed a defective virus file pattern that
resulted in damage to the computers of our customers who downloaded the file. As a result, we took steps to resolve our customers problems and ensure that a similar problem would not reoccur. While the ultimate effect on our results of
operations for the year ending December 31, 2005 is still not known, as of June 10, 2005 we have incurred approximately (Yen) 584 million in costs and expenses related to this issue. However the possibility of incurring further cost is undeniable.
In addition, despite the fact that it is impossible to calculate the ultimate effect, Management expects this issue will result in a decrease of sales and recognition of a portion of deferred revenue will be delayed due to the impact from the
extension of the service period to certain customers.



F-35



---

SCHEDULE II



TREND MICRO
INCORPORATED

AND CONSOLIDATED SUBSIDIARIES



VALUATION AND QUALIFYING ACCOUNTS



|                                                  |  |                              |  |                                       |  |                                          |  |                     |  |                |  |                        
|------------------------------------------------- |  | ---------------------------- |  | ------------------------------------- |  | ---------------------------------------- |  | ------------------- |  | -------------- |  | -----------------------
|                                                  |  | Balance atbeginning ofperiod |  | Additionscharged to costsand expenses |  | Additions(deductions)charged to netsales |  | Deductions (Note 1) |  | Other (Note 2) |  | Balance at end ofperiod
|                                                  |  | Thousands of yen            
|Year ended December 31, 2002:                     |  |                              |  |                                       |  |                                          |  |                     |  |                |  |                        
|Allowance for doubtful accounts and sales returns |  | (Yen)850,376                 |  | (Yen)459,780                          |  | (Yen)(274,488)                           |  | (Yen)(61,785)       |  | (Yen)(11,846)  |  | (Yen)962,037           
|                                                  |  |                              |  |                                       |  |                                          |  |                     |  |                |  |                        
|Year ended December 31, 2003:                     |  |                              |  |                                       |  |                                          |  |                     |  |                |  |                        
|Allowance for doubtful accounts and sales returns |  | (Yen)962,037                 |  | (Yen)278,150                          |  | (Yen)91,678                              |  | (Yen)(301,299)      |  | (Yen)(6,832)   |  | (Yen)1,023,734         
|                                                  |  |                              |  |                                       |  |                                          |  |                     |  |                |  |                        
|Year ended December 31, 2004:                     |  |                              |  |                                       |  |                                          |  |                     |  |                |  |                        
|Allowance for doubtful accounts and sales returns |  | (Yen)1,023,734               |  | (Yen)8,138                            |  | (Yen)132,528                             |  | (Yen)(309,465)      |  | (Yen)10,003    |  | (Yen)864,938           
|                                                  |  |                              |  |                                       |  |                                          |  |                     |  |                |  |                        



Notes:  1. Amounts written
off.

2. Translation adjustment.



|                                            |  |                              |  |              |  |                |  |        |  |                         
|------------------------------------------- |  | ---------------------------- |  | ------------ |  | -------------- |  | ------ |  | ------------------------
|                                            |  | Balance atbeginning ofperiod |  | Additions    |  | Deductions     |  | Other  |  | Balance at end of period
|                                            |  | Thousands of yen            
|Year ended December 31, 2002:               |  |                              |  |              |  |                |  |        |  |                         
|Valuation allowance    Deferred tax assets |  | (Yen)207,099                 |  | (Yen)125,570 |  | (Yen)(142,590) |  | (Yen) |  | (Yen)190,079            
|                                            |  |                              |  |              |  |                |  |        |  |                         
|Year ended December 31, 2003:               |  |                              |  |              |  |                |  |        |  |                         
|Valuation allowance    Deferred tax assets |  | (Yen)190,079                 |  | (Yen)29,009  |  | (Yen)(60,246)  |  | (Yen) |  | (Yen)158,842            
|                                            |  |                              |  |              |  |                |  |        |  |                         
|Year ended December 31, 2004:               |  |                              |  |              |  |                |  |        |  |                         
|Valuation allowance    Deferred tax assets |  | (Yen)158,842                 |  | (Yen)97,019  |  | (Yen)74,404    |  | (Yen) |  | (Yen)181,457            
|                                            |  |                              |  |              |  |                |  |        |  |                         



F-36



---

SIGNATURE



Pursuant to the requirements of Section 12 of the Securities Exchange Act of 1934, the registrant certifies that it meets all of the requirements for filing on Form
20-F and has duly caused this annual report to be signed on its behalf by the undersigned, thereunto duly authorized.



TREND MICRO INCORPORATEDBy:

/s/    Mahendra NegiName:

Mahendra NegiTitle:

Representative DirectorChief Financial Officer andExecutive Vice President




Date: June 30, 2005



---

INDEX OF EXHIBITS



|              |       |  |                                                                                                                                                                                                                
|------------- | ----- |  | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|ExhibitNumber |       |  | Document                                                                                                                                                                                                       
|              |      
|1.1           |       |  | Articles of Incorporation of Trend Micro (English translation)                                                                                                                                                 
|              |      
|1.2           | *     |  | Share Handling Regulations of Trend Micro, as amended (English translation)                                                                                                                                    
|              |      
|1.3           |       |  | Regulations of the Board of Directors of Trend Micro, as amended (English translation)                                                                                                                         
|              |      
|1.4           | *     |  | Regulations of the Board of Corporate Auditors of Trend Micro, as amended (English translation)                                                                                                                
|              |      
|2.1           | **    |  | Specimen Common Stock Certificates                                                                                                                                                                             
|              |      
|2.2           | ***   |  | Form of Deposit Agreement among Trend Micro, The Bank of New York as depositary and all owners and holders from time to time of American Depositary Receipts, including the form of American
Depositary Receipt
|              |      
|4.1           | ****+ |  | Basic Agreement on Continual Sale and Purchase of Goods dated October 1, 1999, between Trend Micro Incorporated and SOFTBANK BB (formerly known as SOFTBANK COMMERCE CORP.), and related
agreements            
|              |      
|4.2           |       |  | Limited Liability Agreement dated April 21, 2005, between Trend Micro Incorporated and Hirotaka Takeuchi                                                                                                       
|              |      
|8.1           |       |  | List of subsidiaries of Trend Micro                                                                                                                                                                            
|              |      
|11.1          | *     |  | Code of Conduct                                                                                                                                                                                                
|              |      
|12.1          |       |  | Certification of the principal executive officer of Trend Micro required by Rule 13a-14(a)                                                                                                                     
|              |      
|12.2          |       |  | Certification of the principal financial officer of Trend Micro required by Rule 13a-14(a)                                                                                                                     
|              |      
|13.1          |       |  | Certification of the chief executive officer required by Rule 13a-14(b) and Section 1350 of Chapter 63 of Title 18 of the United States Code                                                                   
|              |      
|13.2          |       |  | Certification of the chief financial officer required by Rule 13a-14(b) and Section 1350 of Chapter 63 of Title 18 of the United States Code                                                                   
|              |      
|15.1          |       |  | Consent of Independent Registered Public Accounting Firm                                                                                                                                                       

---

|* | Incorporated by reference to the corresponding exhibit to our annual report of Form 20-F (File No. 333-10486) filed on June 1, 2004.
|- | ------------------------------------------------------------------------------------------------------------------------------------

|** | Incorporated by reference to the corresponding exhibit to our annual report on Form 20-F (File No. 333-10486) filed on June 29, 2001.
|-- | -------------------------------------------------------------------------------------------------------------------------------------

|*** | Incorporated by reference to the corresponding exhibit to our Amendment No. 1 to Registration Statement on Form F-6 (File No. 333-10492) filed on June 22, 2001.
|--- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------

|**** | Incorporated by reference to the corresponding exhibit to our Amendment No. 2 to the Form F-1 Registration Statement (File No. 333-10568) filed on May 22, 2000.
|---- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------

|+ | Confidential treatment granted for a portion of these documents.
|- | ----------------------------------------------------------------