Prince Stephen Báthory sent Sulyok as his envoy to Vienna in the court of King Maximilian to thank the monarch's intervention in the promoting peace between the Prince and Gáspár Bekes.
Sulyok went to Warsaw in 1575 and visited the Sejm to urge them to offer the Polish throne for Prince Báthory.
He participated in the reorganizing of the place of authentication of the Kolozsmonostor Abbey in that same year.
Imre Sulyok was appointed Chancellor of Transylvania in the next year, replacing Ferenc Forgách, when Stephen Báthory became King of Poland and his younger brother, Christopher ruled the county as voivode.
He was succeeded by Farkas Kovacsóczy (for voivode Christopher in Transylvania) and Márton Berzeviczy (for Stephen Báthory in Poland).