Vestas Wind Systems — Major Shareholding Notification 2012

Jun 4, 2012

Company announcement from Vestas Wind Systems A/S

Aarhus, 4 June 2012 Company announcement No. 21/2012 Page 1 of 1

Major shareholder announcement - BlackRock, Inc.

Vestas has been informed that BlackRock, Inc., USA has reduced their holding of Vestas shares from 10,238,578 shares (ref. company announcement No. 32/2010 of 8 September 2010) to 8,179,963 (4.02 per cent).

Yours sincerely Vestas Wind Systems A/S

Ditlev Engel President and CEO

Contact details: Vestas Wind Systems A/S, Denmark Lars Villadsen, Senior Vice President, Investor Relations Telephone +45 9730 0000