My sister looked up the company's predecessor online for me.

瑪司's predecessor was called 馬殊, and before that it was called 群華 and 群達. The person in charge, whose name can be found online, is 林俊良. He previously sold unlisted stocks but now refuses to discuss it at all. He was once featured in major news reports. After the incident, the company changed its name to 馬殊國際財富管理. I heard that a U.S. company complained about the identical name, so some time ago it changed its name again to 瑪司國際財富管理.

Here are two related news reports:

http://www.libertytimes.com.tw/2005/new/jun/2/today-so11.htm

http://www.epochtimes.com.tw/bt/5/4/1/n873584.htm