WestRock Company announced today that it has successfully completed the separation of its specialty chemicals business, Ingevity Corporation, as an independent public company whose shares are listed on the New York Stock Exchange under the symbol “NGVT.”   Under the terms of the separation, WestRock stockholders received one share of Ingevity common stock for every six common shares of WestRock stock held as of the close of business on May 4, 2016. WestRock stockholders received cash in lieu o...