Zurich Prosecutor Drops Probe of Former Sonova Finance Chief

Sonova Holding AG’s former finance chief Oliver Walker is no longer being investigated by the Zurich prosecutor’s office for insider trading, Corinne Bouvard, a spokeswoman for the prosecutor, said in an e-mail today.

Walker exercised his options before he learned of the sales figures which led the hearing-aid maker to issue a profit warning in March 2011, the prosecutor’s spokeswoman told AWP, a Swiss newswire. Bouvard confirmed those comments in the e-mail.

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