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Disclosure of shareholdings


BlackRock Inc. and its subsidiaries hold less than 3% of Sonova Holding AG

According to the article 20 of the Swiss Stock Exchange Act, Sonova Holding AG announces that BlackRock Inc. and its subsidiaries, 40 East 52nd Street, New York, 10022, USA, hold less than 3% of total capital and voting rights as of December 7, 2010 due to a sale of shares.


Contact person at BlackRock Investment Management Ltd.: Matt Beattie, phone: +44 207 743 5789, fax: +44 207 743 1000.