The bank has been listed on the Stock Exchange of Thailand (SET) since 1976.
His father, Ng Yuk Long, was a second generation Thai Chinese with ancestry from Guangdong province.
After Ng Meow Ngian, Yuk Long's father died, he took over and expanded the family's timber business.
In 1939, Yuk Long was murdered by the local Chinese mafia.
Choti and his brothers, Julin and Kasem, then took over the family business.