supercat
From Longman Business Dictionarysupercatsu‧per‧cat /ˈsuːpəkæt-pər-/ noun [countable] journalism disapproving a businessperson who earns a very large amount of money for running a company, especially one that was previously owned by the government before being PRIVATIZED (=sold to the public)SYNFAT CATThe fat cats of the 1990s are nothing compared with the supercats who run the computer giants in this century.