Credit Suisse Funds AG controls less than 3% of Sonova Holding AG

Staefa (Switzerland), April 18, 2013 – According to the article 20 of the Swiss Stock Exchange Act, Sonova Holding AG announces that Credit Suisse Funds AG, Kalandergasse 4, 8045 Zurich, Switzerland, controls less than 3% of total capital and voting rights as of April 12, 2013 due to a sale of shares.

Contact person at Credit Suisse Funds AG:

Thu Hong Pham

Credit Suisse AG

Large Shareholding Reporting, YCTS 2

Giesshübelstrasse 62

8045 Zurich, Switzerland

Phone: +41 44 333 71 18, Fax +41 44 333 94 54

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