The purpose of this study is analyzing and to empirically examine the effect of corporate governance mechanism on the company’s financial performance (ROA) in the manufacturing companies. Corporate governance mechanism in this study are managerial ownership, institutional ownership, the proportion of independent commissioners and audit committee.
Population in this study are all manufacturing companies which listed on Indonesia Stock Exchange (BEI) in periode 2012-2015, with the sampling method is purposive sampling method. The secondary data obtained from ICMD (Indonesia Capital Market Directory) and annual reports of the company for four years which is publicated by BEI. The method of data analysis is used a multiple regression analysis. The sample used in this study amounted to 124 manufacturing companies listed on BEI in the period 2012-2015.
The results of this research demonstrate that managerial ownership has a positive significant effect on the company’s financial performance (ROA). Meanwhile, institutional ownership has a negative significant effect on the company’s financial performance (ROA). The proportion of independent commissioners and audit committee have no significant effect on the company’s financial performance (ROA).

Keywords : the corporate governance mechanism, managerial ownership, institutional ownership, the proportion of independent commissioners, audit committee, the company’s financial performance (ROA).