At the company’s annual general shareholders’ meeting of Bühler Holding AG, Ruth Metzler-Arnold resigned as a member of the Board of Directors and chairwoman of the Audit Committee.    She will be succeeded as chairperson of the Audit Committee by Rainer Schulz, member of the Board of Directors.   “We would like to thank Ruth Metzler-Arnold for bringing her profound knowledge of business and especially corporate governance to us over the past 10 years,” said Calvin Grie...