Lonza (LZAGF.PK) agrees to buy Arch Chemicals (ARJ) for $1.4B, or $47.20/share, a 37% premium to...

|About: Arch Chemicals, Inc. (ARJ)|By:, SA News Editor

Lonza (LZAGF.PK) agrees to buy Arch Chemicals (ARJ) for $1.4B, or $47.20/share, a 37% premium to Arch's average closing price over the last 30 days. The deal, announced this morning, creates the world's largest microbial-control business, but regulators may be more concerned by the 11% spike in Arch's shares on Friday on unusually high volume.