This study aims to examine the influence of environmental performance (X1) and firm size (X2) on environmental disclosure (Y), with profitability serving as a mediating variable. The research is prompted by escalating regulatory pressures, such as the PROPER mechanism, which mandates greater transparency amidst growing concerns regarding greenwashing practices within Indonesia's manufacturing sector.Adopting a quantitative approach and employing a purposive sampling method, this study measures variables through PROPER rating indicators, the logarithm of total assets, and Return on Assets (ROA). The analytical results demonstrate that environmental performance exerts a significant influence on the extent of environmental disclosure, reflecting corporate commitment to maintaining public legitimacy. Conversely, firm size was found to have no significant effect on disclosure levels.A crucial finding reveals that profitability fails to function as a mediating variable. This indicates that corporate decisions to disclose environmental information are driven primarily by regulatory compliance and ethical responsibility rather than purely financial motives. Consequently, strengthening external oversight remains essential to fostering corporate transparency.
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