June 28, 2005

CEMEX, S.A. de C.V. (NYSE: CX) ("CEMEX") announced today that beginning on June 29, 2005, trading in its Ordinary Participation Certificates ("CPOs") and American Depositary Shares ("ADSs") will reflect its previously announced stock split. In connection with the stock split, which was approved by CEMEX's shareholders on April 28, 2005, each of CEMEX's existing series A shares will be surrendered in exchange for two new series A shares, and each of CEMEX's existing series B shares will be surrendered in exchange for two new series B shares. Each existing CPO, which represents two existing series A shares and one existing series B share, will be surrendered in exchange for two new CPOs. Each new CPO will represent two new series A shares and one new series B share. The new CPOs will be identical in all material respects to the existing CPOs.

The number of CEMEX's existing ADSs, each of which currently represents five CPOs, will not change as a result of the stock split; instead the ratio of CPOs to ADSs will be modified so that each existing ADS will represent ten new CPOs following the stock split. The proportional equity interest participation of existing shareholders will not change as a result of the stock split.

On June 29, 2005, the new CPOs will commence trading on the Mexican Stock Exchange and the ADSs trading on the New York Stock Exchange will reflect the CPOs to ADS ratio modification, with each ADS representing ten new CPOs.

CEMEX is a growing global building solutions company that provides products of consistently high quality and reliable service to customers and communities in more than 50 countries throughout the world. The company improves the well-being of those it serves through its relentless focus on continuous improvement and efforts to promote a sustainable future. For more information, visit www.cemex.com.

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