Document:

<PAGE>

                                                                     Exhibit 4.1

                           ARTICLES OF INCORPORATION
                                      OF
                           TREND MICRO INCORPORATED

                                   CHAPTER I
                              GENERAL PROVISIONS

Article 1.     Corporate Name

     The corporate name of the Company shall be "Trend Micro Kabushiki Kaisha"
and in English it shall be "Trend Micro Incorporated."

Article 2.     Purposes

     The purposes of the Company shall be to engage in the following businesses:

     (a)       Manufacture, sale, import and export of electronic components;

     (b)       Manufacture, sale, import and export of household electric
               appliances;

     (c)       Manufacture, sale, import and export of communications equipment;

     (d)       Manufacture, sale, import and export of medical equipment;

     (e)       Design, sale, import and export of computer software;

     (f)       Design, sale, import and export of computer hardware and related
               products;

     (g)       Administration and maintenance of computer systems;

     (h)       Provision of consultation with respect to computer systems; and

     (i)       Any other business incidental to any of the preceding items.

Article 3.     Location of Head Office

     The head office of the Company shall be located in Shibuya-ku, Tokyo.

Article 4.     Method of Placing Public Notice

     Public notices of the Company shall be placed in the Nihon Keizai Shimbun.

                                       1
<PAGE>

                                  CHAPTER II
                                    SHARES

Article 5.     Total Number of Shares to be Issued

     The total number of shares to be issued by the Company shall be two hundred
and fifty million (250,000,000).

Article 5-2    Grant of Rights to Subscribe for New Shares

     The Company may grant the directors and employees of the Company and of the
specified related corporations referred to under Article 9, paragraph 1 of the
Law Regarding the Special Treatment in relation to Revitalization of Industries
the rights to subscribe for new shares referred to under Article 280-19 of the
Commercial Code.

Article 6.     Number of Shares Constituting One Unit

     The number of shares constituting one unit of the Company shall be five
hundred (500).

Article 7.     Non-issuance of Share Certificates Representing Less Than One
Unit

     The Company shall not issue share certificates representing less than one
unit.

Article 8.     Transfer Agent

     (a)       The Company shall appoint a transfer agent in respect of its
shares.

     (b)       The transfer agent and its business handling office shall be
determined by resolution of the Board of Directors.

     (c)       The register of shareholders (including register of beneficial
shareholders, likewise hereinafter) of the Company shall be kept at the business
handling office of the transfer agent, and the Company shall cause the transfer
agent to handle registration of transfer of shares, the take up of shares not
constituting one unit, the receipt of beneficial shareholders' notices and any
other business pertaining to the shares and the Company itself shall not handle
these matters.

                                       2
<PAGE>

Article 9.     Share Handling Regulations

        The denominations of share certificates of the Company, registration of
transfer of shares, purchase of shares not constituting one unit, receipt of
beneficial shareholders' notices and any other matters concerning shares and
share handling fees shall be governed by the Share Handling Regulations
established by resolution of the Board of Directors.

Article 10.    Record Date

        (a)    The shareholders (including beneficial shareholders, likewise
hereinafter) appearing in the register of shareholders of the Company as of the
last day of each fiscal year shall be entitled to exercise their rights at the
ordinary general meeting of shareholders relating to the relevant accounts.

        (b)    In addition to the preceding paragraph, the Company may, if
necessary, determine the shareholders or registered pledgees appearing in the
register of shareholders as of a certain date to be entitled to exercise their
rights by giving prior public notice in accordance with a resolution of the
Board of Directors.

                                  CHAPTER III
                        GENERAL MEETING OF SHAREHOLDERS

Article 11.    Convocation

        An ordinary general meeting of shareholders of the Company shall be
convened in March each year and an extraordinary general meeting of shareholders
may be convened whenever necessary.

Article 12.    Chairman

        The chairman of a general meeting of shareholders shall be a person
selected in advance from the Company's directors, shareholders employees or
advisory counsel by Board of

                                       3
<PAGE>

Directors. When such person is unable to so act, another person determined in
accordance with an order predetermined by resolution of the Board of Directors
shall act as chairman.

Article 13.    Method of Resolution

     Unless otherwise provided by laws and ordinances or these Articles of
Incorporation, resolutions of general meeting of shareholders shall be adopted
by a majority vote of the voting rights of shareholders present at the meeting.

Article 14.    Exercise of Voting Rights by Proxy

     (a)       A shareholder may exercise his/her voting rights through a proxy
who is also a shareholder of the Company having voting rights.

     (b)       In case of the preceding paragraph, the proxy shall be required
to file with the Company a document evidencing his/her authority each time
he/she acts as proxy.

Article 15.    Minutes

     The substance of proceedings at a general meeting of shareholders and the
results thereof shall be recorded in the minutes of the meeting which shall bear
the names and seals of the chairman and the directors present thereat.

                                  CHAPTER IV
                     DIRECTORS AND THE BOARD OF DIRECTORS

Article 16.    Number of Directors

     The Company shall have not more than eight (8) directors.

Article 17.    Election of Directors

     (a)       Directors of the Company shall be elected at a general meeting of
shareholders.

                                       4
<PAGE>

        (b)    Resolution for election of directors shall be adopted by a
majority vote at a general meeting of shareholders at which shareholders who
hold shares representing one-third (1/3) or more of the total number of issued
shares with voting rights are present.

        (c)    With respect to the resolution for election of directors,
cumulative voting shall not be adopted.

Article 18.    Term of Office of Directors

        (a)    The term of office of directors shall expire at the conclusion of
the ordinary general meeting of shareholders with respect to the last closing of
accounts within two (2) years after their assumption of office.

        (b)    The term of office of any director elected to fill a vacancy due
to early retirement shall be the same as the remainder of the term of office of
the retired director.

        (c)    The term of office of any director elected due to increase in
number of directors shall be the same as the remainder of the term of office of
the other directors in office.

Article 19.    Convocation and Chairman of the Board of Directors

        (a)    The President and Director shall convene and act as chairman of
the Board of Directors. When the President and Director is unable to so act, one
of the other directors determined in accordance with an order predetermined by
the Board of Directors shall act in his/her place.

        (b)    Notice of convocation of a meeting of the Board of Directors
shall be sent to each director and statutory auditor at least three (3) days
prior to the date set for such meeting; provided, however, that in case of
urgency such period may be shortened.

                                       5
<PAGE>

Article 20.    Directors with Special Titles

     By resolution of the Board of Directors, the Company may, from among
Directors, appoint one President and Director and, if necessary, one or more
Chairman and Directors, Vice President and Directors, Senior Managing Directors
and Managing Directors.

Article 21.    Representative Directors

     (a)       The President and Director shall represent the Company and manage
the business of the Company.

     (b)       By resolution of the Board of Directors, the Company may elect
the director who represents the Company from among the directors with special
titles provided in the preceding Article.

Article 22.    Method of Resolution of the Board of Directors

     Resolution of the Board of Directors shall be adopted by a majority of the
directors present at a meeting at which majority of the directors are present.

Article 23.    Minutes of the Board of Directors

     The substance of proceedings at a meeting of the Board of Directors and the
results thereof shall be recorded in the minutes of the meeting which shall bear
the names and seals of the directors and statutory auditors present thereat.

Article 24.    Regulations of the Board of Directors

     Matters concerning the Board of Directors shall be governed by the
Regulations of the Board of Directors established by resolution of the Board of
Directors in addition to laws and ordinances and these Articles of
Incorporation.

                                       6
<PAGE>

Article 25.    Remuneration and Retirement Allowances of Directors

     Remuneration and retirement allowances of directors shall be determined by
resolution of a general meeting of shareholders.

                                   CHAPTER V
                            STATUTORY AUDITORS AND
                        THE BOARD OF STATUTORY AUDITORS

Article 26.    Number of Statutory Auditors

     The Company shall have not more than four (4) statutory auditors.

Article 27.    Election of Statutory Auditors

     (a)       Statutory auditors of the Company shall be elected at a general
meeting of shareholders.

     (b)       Resolution for election of statutory auditors shall be adopted by
a majority vote at a general meeting of shareholders at which shareholders who
hold shares representing one-third (1/3) or more of the total number of issued
shares with voting rights are present.

Article 28.    Term of Office of Statutory Auditors

     (a)       The term of office of statutory auditors shall expire at the
conclusion of the ordinary general meeting of shareholders with respect to the
last closing of accounts within three (3) years after their assumption of
office.

     (b)       The term of office of any statutory auditor elected to fill a
vacancy due to early retirement shall be the same as the remainder of the term
of office of the retired statutory auditor.

Article 29.    Standing Statutory Auditor

     Standing statutory auditor shall be appointed from among the statutory
auditors.

                                       7
<PAGE>

Article 30.    Notice of Convocation of Meetings of the Board of Statutory
Auditors

     Notice of convocation of a meeting of the Board of Statutory Auditors shall
be sent to each statutory auditor at least three (3) days prior to the date set
for such meeting; provided, however, that in case of urgency such period may be
shortened.

Article 31.    Method of Resolution of the Board of Statutory Auditors

     Unless otherwise provided by laws and ordinances, resolutions of the Board
of Statutory Auditors shall be adopted by a majority of the statutory auditors.

Article 32.    Minutes of the Board of Statutory Auditors

     The substance of proceedings at a meeting of the Board of Statutory
Auditors and the results thereof shall be recorded in the minutes of the meeting
which shall bear the names and seals of the statutory auditors present thereat.

Article 33.    Regulations of the Board of Statutory Auditors

     Matters concerning the Board of Statutory Auditors shall be governed by the
Regulations of the Board of Statutory Auditors established by resolution of the
Board of Statutory Auditors in addition to laws and ordinances and these
Articles of Incorporation.

Article 34.    Remuneration and Retirement Allowances of Statutory Auditors

     The remuneration and retirement allowances of statutory auditors shall be
determined by resolution of a general meeting of shareholders.

                                  CHAPTER VI
                                   ACCOUNTS

Article 35.    Fiscal Year

     The fiscal year of the Company shall be from January 1 through December 31
of each year and the account shall be settled on the last day of the fiscal
year.

                                       8
<PAGE>

Article 36.    Dividends

       Dividends of the Company shall be paid to shareholders or registered
pledgees appearing in the final register of shareholders of the Company as of
December 31 of each year.

Article 37.    Interim Dividends

     The Company may, upon resolution of the Board of Directors, make pecuniary
distribution provided for in Article 293-5 of the Commercial Code (hereinafter
referred to as the "interim dividends") to shareholders or registered pledgees
appearing in the final register of shareholders of the Company as of June 30 of
each year.

Article 38.    Conversion of Convertible Bonds and Dividends or Interim
Dividends Thereon

     The first dividends or interim dividends on shares issued upon conversion
of convertible bonds shall be paid on an assumption that the conversion has
taken place on January 1 for claims made during a period from January 1 through
June 30 and on July 1 for claims made during a period from July 1 through
December 31.

Article 39.    Prescription Period of Dividends

     (a)       In case dividends or interim dividends remain unclaimed for three
(3) years after the date of commencement of payment, the Company shall be
relieved from the obligation of payment thereof.

     (b)       Unclaimed dividends or interim dividends shall not bear any
interest.

                                       9
<PAGE>

     We hereby certify that the above is the Articles of Incorporation of the
Company currently in effect.

                                   Date:

                                   Chang Ming Jang
                                   President and Representative Director
                                   Trend Micro Incorporated

                                       10<PAGE>

                                                                     Exhibit 4.2

                                 (Translation)

                          SHARE HANDLING REGULATIONS

CHAPTER I      GENERAL PROVISIONS

Article 1  (Purpose)

     These Regulations provide denominations of share certificates and handling
     and fees concerning shares and fractional shares of the Company pursuant to
     Article 9 of the Articles of Incorporation; provided, however, that the
     handling with respect to the beneficial shareholders shall be governed by
     the provisions prescribed by Japan Securities Depository Center
     (hereinafter referred to as the "JASDEC") in addition to these Regulations.

Article 2  (Transfer Agent)

     The transfer agent of the Company and its handling office, handling place
     and liaison offices shall be as follows:

     (1)   Transfer Agent:  The UFJ Trust and Banking Co., Limited
                            4-3, Marunouchi 1-chome, Chiyoda-ku, Tokyo
     (2)   Handling Office: The UFJ Trust and Banking Co., Limited
                            Stock Transfer Agency Division
                            4-3 Marunouchi 1-chome, Chiyoda-ku, Tokyo
     (3)   Handling Place:  The UFJ Trust and Banking Co., Limited
                            Stock Transfer Agency Division
                            10-11 Minamisuna 7-chome, Koto-ku, Tokyo
     (4)   Liaison Offices: Each and every branch office in Japan of The UFJ
                            Trust and Banking Co., Limited

Article 3  (Denominations of Share Certificates)

     All the share certificates to be issued by the Company shall be in two (2)
     denominations of five hundred (500) and five thousand (5,000).

Article 4  (Procedures of Application, Notice or Request, etc.)

     Application, notice or request, etc. with respect to the matters relating
     to the shares of the Company shall be brought to the transfer agent.

                                       1
<PAGE>

Article 5   (Form of Application, Notice or Request)

     1.     Application, notice or request under the preceding Article shall be
            made in such form prescribed by the Company which shall bear the
            seal impression notified pursuant to Article 14.
     2.     When any application, notice or request hereunder is made by a
            proxy, such proxy shall submit a power of attorney and when it
            requires approval by a guardian or an assistant, a document
            evidencing such approval shall be submitted.

CHAPTER II     REGISTRATION OF TRANSFER

Article 6   (Registration of Transfer)

     1.     In order to apply for registration of transfer of shares, a written
            application shall be submitted together with the share certificates
            concerned to the transfer agent.
     2.     In order to apply for registration of transfer of shares obtained
            due to any cause other than an assignment, a document evidencing
            such transfer shall be submitted upon request by the Company.
     3.     When it is possible to consolidate fractional unit shares submitted
            for registration of stock transfer into a full unit, such
            consolidation shall take place unless otherwise directed by the
            person applying for such registration of stock transfer.

Article 7   (Registration of Transfer of Shares Where Special Procedures are
            Required by Laws and Ordinances)

     In order to apply for registration of transfer of shares which requires
     special procedures under laws and ordinances, a written application shall
     be submitted together with the share certificates concerned as well as a
     document evidencing completion of such special procedures.

CHAPTER III    REGISTER OF BENEFICIAL SHAREHOLDERS

Article 8   (Entry into Register of Beneficial Shareholders)

     The entry into the register of beneficial shareholders shall be made
     pursuant to the notice regarding the beneficial shareholders given by the
     JASDEC and the beneficial shareholders' card prescribed by the JASDEC.

Article 9   (Collective Names of Shareholders)

     If a shareholder entered in the register of shareholders is determined to
   be the same

                                       2
<PAGE>

     person as a beneficial shareholder entered in the register of beneficial
     shareholders, the number of shares in the register of shareholders and that
     in the register of beneficial shareholders shall be aggregated.

CHAPTER IV     PLEDGE AND TRUST PROPERTY

Article 10  (Registration or Cancellation of Pledge)

     In order to request for registration, alteration or cancellation of pledge
     with respect to shares, a written request jointly signed by the pledger and
     the pledgee shall be submitted together with the share certificates
     concerned.

Article 11  (Indication or Cancellation of Trust Property)

     In order to request for indication or cancellation of trust property with
     respect to shares, the trustor or the trustee shall submit a written
     application together with the share certificates concerned. Request for
     cancellation may also be made by a beneficiary.

CHAPTER V      NON-POSSESSION OF SHARE CERTIFICATES

Article 12  (Request for Non-Possession of Share Certificates)

     When a shareholder requests non-possession of share certificates, a written
     application shall be submitted together with the share certificates
     concerned; provided, however, that submission thereof shall not be required
     if no share certificate has been issued.

Article 13  (Request for Issuance of Share Certificates Placed in Non-Possession
            Status)

     When a shareholder who previously requested non-possession of share
     certificates subsequently requests for issuance or restitution of the share
     certificates, a written application shall be submitted; provided, however,
     that if the Company determined to treat the share certificates applied for
     non-possession status under non-issuable status, the shareholder cannot
     request for issuance of certificates of shares less than one unit.

CHAPTER VI     NOTIFICATION

Article 14  (Notification of Address, Name and Seal Impression by Shareholders,
            Beneficial Shareholders, etc.)

     1.     Shareholders, beneficial shareholders and registered pledgees or
            their legal representatives shall notify their addresses, names and
            seal impressions; provided, however, that foreign individuals may
            substitute their signature for seal impressions.

                                       3
<PAGE>

     2.     Any change in the matters notified under the preceding paragraph
            shall be reported.

Article 15  (Notification by Shareholders, etc. Residing Abroad)

     1.     Shareholders, beneficial shareholders and registered pledgees or
            their legal representatives residing abroad shall, in addition to
            the procedures provided in the preceding Article, appoint their
            standing proxies or determine their mailing addresses to receive
            notice in Japan and notify the same.
     2.     The provisions of the preceding Article shall apply mutatis mutandis
            to standing proxies.

Article 16  (Representative of Juridical Person)

     1.     In case a shareholder or beneficial shareholder is a juridical
            person, one (1) representative shall be notified to the Company.
     2.     In case the representative is changed, a written notice shall be
            submitted together with a certified extract copy of the commercial
            register.
     3.     The provision of paragraph 1 shall apply mutatis mutandis to a
            shareholder or beneficial shareholder who is an organization without
            capacity to enjoy rights. The same shall apply when the
            representative is changed.

Article 17  (Representative of Joint Shareholders)

     Shareholders or beneficial shareholders who jointly own shares shall
     appoint one (1) representative among themselves and notify the same to the
     Company in a form jointly signed by all the joint shareholders. The same
     shall apply when the representative is changed.

Article 18  (Change of Family Name, Given Name or Trade Name, etc.)

     In case of changes in the indications in the register of shareholders,
     register of beneficial shareholders or share certificates for any of the
     following reasons, a written application shall be submitted together with
     the share certificates concerned as well as a document evidencing such
     change; provided, however, that submission of share certificates shall not
     be required if the share certificates have not been issued.

     (1)    Change of family name or given name;
     (2)    Appointment, change or dismissal of a person in parental authority,
            a guardian or any other legal representative;
     (3)    Change of trade name or corporate name; or
     (4)    Change in the organization of juridical person.

                                       4
<PAGE>

Article 19  (Method of Notification by Beneficial Shareholders)

   In case a beneficial shareholder makes any notification provided for in this
   Chapter, such notification shall be given through a participant of the JASDEC
   (hereinafter referred to as the "Participant") except for notification of
   change of the registered seal impression.

CHAPTER VII    REISSUE OF SHARE CERTIFICATES

Article 20  (Reissue due to Subdivision or Consolidation)

   In order to request for issuance of new share certificates due to subdivision
   or consolidation of share certificates, a written application shall be
   submitted together with the share certificates concerned.

Article 21  (Reissue due to Loss)

   In order to request for reissue of new share certificates due to loss of
   share certificates, a written application shall be submitted together with a
   certified transcript or certified extract copy of the judgment of
   nullification thereof.

Article 22  (Reissue due to Mutilation or Destruction)

   In order to request for reissue of new share certificates due to mutilation
   or destruction of share certificates, a written application shall be
   submitted together with the share certificates concerned; provided, however,
   that the provision of the preceding Article shall apply when it is difficult
   to identify such share certificates.

CHAPTER VIII   PURCHASE OF SHARES LESS THAN ONE UNIT

Article 23  (Request for Purchase of Shares less than One Unit)

   1.       In order to request for purchase of fractional unit shares, a
            written application shall be submitted.
   2.       When a beneficial shareholder makes the above request, a written
            application shall be submitted through the Participant and the
            JASDEC.

Article 24  (Determination of Purchase Price)

   The purchase price of fractional unit shares shall be an amount equal to the
   sales price per share of the Company quoted by the Tokyo Stock Exchange on
   the day on which the application of request for purchase is delivered to the
   handling office or any of the liaison offices of the transfer agent set out
   in Article 2 (or, if the sales price is not available on such day or if such
   day is not an operating day of the Tokyo Stock

                                       5
<PAGE>

     Exchange, then the first sales price available thereafter.), multiplied by
     the number of shares requested for purchase.

Article 25  (Payment of Purchase Price)

     1.     The Company shall pay the purchase price calculated pursuant to the
            preceding Article to the requesting person within four (4) business
            days starting from the day on which the purchase price is determined
            or the request for purchase reaches the handling office set out in
            Article 2, whichever is the later; provided, however, that in the
            event that the request is delivered to any liaison office set out in
            Article 2, the Company shall pay the purchase price within seven (7)
            business days starting from the day on which the purchase price is
            determined or the request for purchase reaches the liaison office,
            whichever is the later.
     2.     Notwithstanding the preceding paragraph, if purchase price reflects
            the right to receive dividends (including interim dividends), stock
            split or the right to subscribe for new shares, the payment shall be
            made not later than the record date or the allotment date, and if
            purchase price does not reflect the right to receive dividends
            (including interim dividends), stock split or the right to subscribe
            for new shares, the payment shall be made on or later than the day
            immediately following the record date or the allotment date

CHAPTER IX     HANDLING FEE

Article 26  (Handling Fee)

     The handling fees receivable by the Company in relation to the handling of
     shares shall be as follows:

     The handling fees in case of purchase by the Company of fractional unit
     shares under Article 23 are free.

SUPPLEMENTARY PROVISIONS

1.   Amendment to these Regulations shall be made by resolution of the Board of
     Directors.
2.   These Regulations shall become effective as of October 25, 2001.

                                       6

Source: [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00037-of-00352.parquet"}, [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00037-of-00352.parquet"}]]