Wolters Kluwer Share Buy-back Program, Update August 13-17

Amsterdam (August 20, 2007) – Wolters Kluwer, a leading global information services and publishing company, today announces that in line with the launch of its €475 million share buy-back program on June 15, 2007, the company has repurchased 1,858,409 ordinary shares in the period August 13 until August 17, 2007.

Shares were repurchased at an average price of €21.19 for a total amount of €39.4 million. For detailed information on the daily repurchased shares.

The total number of shares repurchased under this program to date is 12,462,756 ordinary shares for a total consideration of €275.8 million.