Update on Purchase of its Own Shares

Komatsu Ltd. (hereinafter "Company") hereby announces that pursuant to Article 156 of the Corporation Act of Japan as modified by Article 165, Paragraph 3 of the Act, the Company purchased its own shares as follows.

Notes

1. Period of purchase:From November 7 to 30, 2011 (Agreement basis)
2. Total number of shares purchased:15,085,400 shares
3. Total cost of purchase:28,921,065,600 yen
4. Method of purchase:Open market purchase by the trust method

[Reference]
1. Resolutions made by the Board of Directors in its meeting held on October 27, 2011
(1) Type of shares to be purchased:Outstanding common stock of Komatsu Ltd.
(2) Total number of shares to be purchased:Up to 16,000,000 shares(1.65% of total outstanding shares excluding treasury stock)
(3) Total cost of purchase:Up to 30 billion yen
(4) Period of purchase:From November 7 to December 28, 2011

2. Cumulative total of shares purchased to and including November 30 in accordance with the resolutions above
(1) Total number of shares purchased:15,085,400 shares
(2) Total cost of purchase:28,921,065,600 yen