Trend Micro Announces 3-for-1 Stock Split

Tokyo, Japan. -- August 19, 1999 -- Trend Micro Incorporated (Nasdaq:TMIC, Japan OTC: 4704) announced today that its Board of Directors has declared a three-for-one stock split. Stockholders of record on September 30, 1999 will be entitled to three shares of Common Stock for each share of the Company's Common Stock held on that date. The shares will be split on November 19, 1999. The dividend accrual calculation date for the newly issued shares will be July 1, 1999. As a result of the split, shares outstanding as of July 31, 1999 would increase on a pro forma basis from 21,234,800 to 63,704,400.

"The one-into-three stock split approved by our board will make it easier for individuals to invest in Trend Micro," said Steve Chang, chairman and chief executive officer of Trend Micro. "We are pleased with our strong semi-annual earnings results announced today and are excited about our prospects for continued future growth."

Legal Notice Regarding Forward Looking Statements

Forward-looking statements in this release include, but are not limited to, statements regarding the Company’s prospects for continued future growth. The forward-looking statements involve risks and uncertainties including, but not limited to, the timing of new product introductions and the lack of market acceptance for new products, and other risks indicated in the Risk Factors section of Trend Micro’s prospectus dated July 7, 1999 relating to the recent offering of the Company’s shares and ADSs. The prospectus is on file with the SEC. Actual results could differ materially. Trend Micro assumes no obligation to update this information.