April2008With assistance by Investment Fund Tokyo Marine Capital Co., Ltd., AIG Japan Capital Investment Co., Ltd. (currently Pinebridge Japan Capital Investment Co., Ltd.), and Polaris Principal Finance Co., Ltd. (currently Polaris Capital Group Co., Ltd.), Marunouchi Holdings Co., Ltd. acquired the shares of Calonal Co., Ltd., making Calonal Co., Ltd. a 100% subsidiary (capital 8.151 billion yen)
July2008Marunouchi Holdings Co., Ltd. absorbed Calonal Co., Ltd., changed its name to Calonal Co., Ltd., and made Showa Yakuhin Kako Co., Ltd. and SYK Seto Co., Ltd. 100% subsidiaries.
December2008Calonal Co., Ltd. absorbed Showa Yakuhin Kako Co., Ltd. and SYK Seto Co., Ltd. The surviving company, Calonal Co., Ltd., changed its name to Showa Yakuhin Kako Co., Ltd (Capital 6.6485 billion yen).
March2011Capital 6.0485 billion yen
June2012A special purpose company, owned 100% by an investment fund for which Unison Capital Co., Ltd. acts as adviser, acquired 100% of our company stock.
May2013Capital 6.6 billion yen
December2015Capital 300 million yen
October2016GC Corporation acquired all of our company's common shares.