Lonza Group Ltd., one of the world’s leading suppliers to the pharmaceutical, healthcare and life science industries, and Arch Chemicals, Inc., a global biocides company providing innovative solutions to destroy or to selectively inhibit the growth of harmful microorganisms, announced that they have signed an agreement pursuant to which Lonza has agreed to commence a tender offer for 100 percent of Arch Chemicals’ outstanding shares of common stock at a price of $47.20 per share in c...