The Capital Group Companies, Inc. and its subsidiaries control 4.96% of Sonova Holding AG

Staefa (Switzerland), May 2, 2013 - According to the article 20 of the Swiss Stock Exchange Act, Sonova Holding AG announces that The Capital Group Companies, Inc and its subsidiaries¹, 333 South Hope Street, 55th Floor, Los Angeles, CA., 90071-1406 USA, control 3,301,123 registered shares with a par value of CHF 0.05 as of April 29, 2013 due to a sale of securities. This corresponds to 4.9585% of total capital and voting rights.

¹ Subsidiaries of The Capital Group Companies, Inc.:

The Capital Group Companies, Inc. (“CGC”)

333 South Hope Street, 55th Floor, Los Angeles, CA., 90071-1406 USA

Capital Research and Management Company (“CRMC”)

333 South Hope Street, 55th Floor, Los Angeles, CA., 90071-1406 USA

Capital Guardian Trust Company (“CGTC”)

333 South Hope Street, 55th Floor, Los Angeles, CA., 90071-1406 USA

Capital International Limited (“CIL”)

40 Grosvenor Place, London, SW1X 7GG, United Kingdom

Capital International Inc. (“CII”)

11100 Santa Monica Blvd., 15th Floor, Los Angeles, CA., 90025-3384 USA

Capital International Sarl (“CISA”)

3, place des Bergues, 1201 Geneva, Switzerland

Capital International K.K. (“CIKK”)

Meiji Yasuda Life Building, 14th Floor, 2-1-1 Marunouchi, Chiyoda-ku, Tokyo 100-0005, Japan

Contact person at The Capital Group Companies, Inc.:

Gina Martinez, phone: +1 213 615 0469, fax: +1 213 615 4056.

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