Copenhagen Stock Exchange A/S Nikolaj Plads 6 1067 Copenhagen K Denmark Randers, 15 May 2007 Stock exchange announcement No. 21/2007 Announcement of Vestas' Executives tradings with securities In accordance with section 28 a of the Danish Securities Trading Act, Vestas Wind Systems A/S is required to publish information regarding trading in Vestas Wind Systems A/S shares and securities by Executives and persons closely associated with an Executive. The statement is based on a report which Vestas Wind Systems A/S has received from one of the Executives on 15 May 2007. -------------------------------------------------------------------------------- | Name: | Peter Wenzel Kruse | -------------------------------------------------------------------------------- | Position of Executive: | Vice President, Communication & IR | -------------------------------------------------------------------------------- | Issuer: | Vestas Wind Systems A/S | -------------------------------------------------------------------------------- | ID code: | DK0010268606 | -------------------------------------------------------------------------------- | Type of securities: | Shares | -------------------------------------------------------------------------------- | Type of transaction: | Purchase | -------------------------------------------------------------------------------- | Date of trading: | 15 May 2007 | -------------------------------------------------------------------------------- | Place of transaction: | Copenhagen Stock Exchange | -------------------------------------------------------------------------------- | Number of securities traded: | 600 | -------------------------------------------------------------------------------- | Market value (DKK) of | DKK 214,500.00 | | securities traded: | | -------------------------------------------------------------------------------- Any questions may be addressed to the Executive Management at Vestas Wind Systems A/S, telephone +45 9730 0000. Yours sincerely Vestas Wind Systems A/S Ditlev Engel President and CEO