Code of Ethics for Senior Officers
 Article 1: Objective
  Article 2: Applicability
 1.
    
    This Code of Ethics is applicable to those senior officers (collectively, the Senior
Officers) of Komatsu Ltd. and its consolidated subsidiaries, as set forth in the following
clauses:
 a)
    
    Concerning Komatsu Ltd., this Code of Ethics is applicable to directors, executive officers,
presidents of divisions, general managers of administrative departments at the Head Office as
well as managers of the Finance & Treasury and Corporate Accounting of the Head Office and
divisions.
 b)
    
    Concerning the consolidated subsidiaries, this Code of Ethics is applicable to directors,
executive officers, and persons responsible for finance and accounting at such consolidated
subsidiary.
 2.
    
    When this Code of Ethics is applicable to Senior Officers of consolidated subsidiaries of
Komatsu Ltd., Komatsu Ltd. in the following articles shall be interchanged with concerned
consolidated subsidiaries.
 Article 3: General Rules
 1.
    
    All Senior Officers must not only comply with all laws, rules or regulations applicable to
Komatsu Ltd.s business but must also follow this Code of Ethics, Komatsus Worldwide Code of
Business Conduct (hereinafter, Worldwide Business Conduct) and other internal rules, and
perform their duties properly.
 2.
    
    Komatsu Ltd. may demand its Senior Officers to make a pledge in writing and sign their names
on such pledge stating that each such Senior Officer will comply with the law, and read
carefully, understand and comply with this Code of Ethics and the Worldwide Business Conduct.
 Article 4: Prohibition against Insider Trading
 1.
    
    All Senior Officers must work to prevent any insider trading by following the Securities and
Exchange Law of Japan and other pertinent laws, as well as the Internal Information Control
Rules and other internal rules stipulated by Komatsu Ltd.2.
    
    All Senior Officers who have knowledge of insider information concerning Komatsu Ltd. are
prohibited from trading stock or other securities (hereinafter, Stock and Securities) of
Komatsu Ltd. under any name. When any Senior Officer has knowledge of insider information
concerning another company, he or she is prohibited from trading Stock and Securities of such
concerned company.
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3.
    
    All Senior Officers who have knowledge of insider information concerning Komatsu Ltd. (or
concerning another company if the insider information applies to another company) are
prohibited from disclosing or giving tips on such insider information directly or indirectly
to any person who might trade the Stock and Securities of Komatsu Ltd. (or the concerned
company). However, the Senior Officers may disclose insider information in limited
indispensable cases in the course of doing business and on the condition of imposing the
confidentiality obligation to the recipient of such insider information.
 Article 5: Conflicts of Interest
 1.
    
    All Senior Officers must make business decisions in the best interest of Komatsu Ltd., and
not motivated by personal interest or gain.2.
    
    All Senior Officers are prohibited from engaging in any of the following conducts:
 a)
    
    To deprive Komatsu Ltd. of opportunities that belong to the company or are discovered
through the use of corporate property, information or position in order to attain personal profit.b)
    
    To use corporate property, information or position for personal gain.c)
    
    To compete with Komatsu Ltd.
 3.
    
    When the Senior Officers determine that business decisions might infringe upon the law or any
of the rules mentioned above, they must report such facts to the director in charge of
compliance to obtain his or her judgement and follow his or her instructions in order to avoid
actual or potential conflicts of interest with Komatsu Ltd.
 Article 6: Secrecy
 1.
    
    Each Senior Officer must acknowledge that he or she is responsible for keeping information
about Komatsu Ltd., its customers or suppliers and other business partners or personal
information, including that of other Senior Officers, confidential based on the law and/or
agreements with concerned third parties, and that he or she must always work to prevent
leakage of confidential information whether intentionally or otherwise.2.
    
    When any Senior Officer determines that information to be disclosed outside of Komatsu Ltd.
might infringe upon the preceding paragraph, he or she must decide whether to disclose the
information after obtaining a judgement from the department in charge of controlling the
concerned information.
 Article 7: Fair Trade
 1.
    
    All Senior Officers must comply strictly with the Antitrust Law and other fair trade laws.2.
    
    All Senior Officers must work to engage in business with its customers, suppliers and other
business partners in a fair and honest manner.3.
    
    All Senior Officers must work to secure fair competition with competitors.4.
    
    All Senior Officers are prohibited from gaining unfair profits, and from allowing Komatsu
Ltd. to gain unfair profits through dishonest business transactions.
 Article 8: Proper Relationship with Employees
 1.
    
    All Senior Officers must take the initiative to respect the individuality and character of
its employees and to develop and maintain a work environment without any discrimination.
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2.
    
    All Senior Officers are prohibited from engaging in sexual harassment or other behavior which
violate the preceding paragraph, and when they discover that such behavior has occurred, they
must not leave it unattended.
 Article 9: Protection and Proper Use of Company Assets
 1.
    
    All Senior Officers must protect the assets (not only tangible but also intangible assets,
including intellectual property) of Komatsu Ltd. and ensure their proper and efficient use.2.
    
    When any Senior Officer discovers theft, carelessness, misuse, or infringement of the assets
of Komatsu Ltd., they must report such fact to the director that is in charge of compliance.
 Article 10: Timely Disclosure
 1.
    
    Komatsu Ltd. shall comply with the law or applicable regulations of the securities exchange,
the Securities and Exchange Surveillance Commission and other related organizations and shall
disclose the necessary information in a fair and timely manner. To that end, all Senior
Officers shall take every necessary and rational step.2.
    
    When any Senior Officer obtains information which is applicable to any of the following
matters, he or she must report such fact to the director in charge of corporate communications
and follow his or her instructions.
 a)
    
    Important information which may necessitate the determination of disclosure or
non-disclosure of such information and the contents thereof by Komatsu Ltd.b)
    
    Information concerning serious defects of internal control systems or system
design and operation that may result in adverse effects on Komatsu Ltd.s procedures for financial
data recording, processing, summarizing, reporting and other processes.c)
    
    Information concerning misconduct of Senior Officers or other employees who
fulfill important duties relating to financial reporting, disclosure or internal
controls, whether it is material or not.
 3.
    
    In addition to each of the paragraphs above, detailed procedures for appropriate disclosure
shall be stipulated separately.
 Article 11: Reporting Illegal or Unethical Behavior
 1.
    
    When any Senior Officer discovers illegal or other unethical behavior, he or she must report
to or consult with his or her senior officer, the director in charge of compliance, the
Compliance Department and other appropriate personnel.2.
    
    When any Senior Officer receives a request for consultation, a report or other matters
concerning compliance from an employee, he or she must respond honestly, promptly and
accurately and also report to the Compliance Department.3.
    
    Senior Officers or employees shall be ensured that they will not be subject to any penalty as
a result of making a good-faith report based on each of the above clauses.4.
    
    When the Compliance Department receives a report concerning illegal or other unethical
conduct, such Department shall conduct an appropriate investigation, and when such Department
determines that it is necessary to take corrective action, legal action, disciplinary action
or action for prevention of recurrence of such illegal or unethical behavior in light of the
Worldwide Business Conduct, such Department shall implement appropriate measures after
discussions with the Compliance Committee and other concerned groups.
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Article 12: Relationship to Worldwide Business Conduct
  Article 13: Punishment
  Article 14: Amendment and Abolishment
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