Sonova Rocked by Insider Trading Probe; Rihs, Chapero, and Walker Step Down
An insider trading investigation at Sonova, Stafa, Switzerland, has prompted the resignations of three of the groups top executives. Chairman of the Board Andy Rihs has denied accusations of insider trading, but demoted himself to a lesser role on the board, while CEO Valentin Chapero and CFO Oliver Walker are leaving the company.
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