The Capital Group Companies, Inc. and its subsidiaries hold 3.1635% of Sonova Holding AG

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, 55^th Floor, Los Angeles, CA., 90071-1406 USA, hold 2,104,158 registered shares with a par value of CHF 0.05 as of September 23, 2011 due to acquisition of securities. This corresponds to 3.1635% of total capital and voting rights.

Contact person at The Capital Group Companies, Inc.:

Christopher Aquino, phone: +1 213 615 0469, fax: +1 213 486 9698.

¹Subsidiaries of The Capital Group Companies, Inc.:

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

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

Capital Research and Management Company (“CRMC”)

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

Capital Guardian Trust Company (“CGTC”)

333 South Hope Street, 55^th 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., 15^th 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, 14^th Floor, 2-1-1 Marunouchi, Chiyoda-ku, Tokyo 100-0005, Japan