The aim of the article was thus to verify how the Controllership institutionalization process takes place in corporate governance companies in Santa Catarina State – Brazil. Research was carried out by means of a multi-case study with a qualitative approach. Five companies were selected, but four answered the questionnaire, all listed in Bovespa’s corporate governance. The research found only one company underwent a restructuring process in controllership. In this, the institutionalization process involved the system and sub-systems used in the company, encompassing every task and practice. The institutionalization of controllership assured the implementations, controls, performance, goals and levels of commitment of those involved.