This study aims to examine the effect of Environmental, Social, and Governance (ESG) disclosure on firm value in transportation and logistics companies listed on the Indonesia Stock Exchange (IDX), with firm size included as a control variable. The transportation and logistics sector was selected because of its substantial Environmental impact and its relatively low ESG performance compared to other sectors. This study employed a quantitative approach using panel data regression analysis on 21 transportation and logistics companies listed on the IDX during the 2021–2025 period. ESG disclosure was measured using a checklist based on the Global Reporting Initiative (GRI) Standards 2021, while firm value was measured using Tobin’s Q ratio. The results indicate that the Fixed Effects Model (FEM) was the most appropriate estimation model based on the Chow test and Hausman test results. Partially, Environmental disclosure has a positive and significant effect on firm value, whereas Social and Governance disclosures do not have a significant effect on firm value. Simultaneously, Environmental, Social, and Governance disclosures have a significant effect on firm value, with an Adjusted R-squared value of 61%. These findings suggest that investors in the transportation and logistics sector place greater emphasis on Environmental aspects than on Social and Governance aspects when assessing firm value. This may be because Governance practices are already largely standardized through regulatory requirements, resulting in limited variation across companies, while the impact of Social initiatives tends to materialize over a longer period and may not be immediately reflected in firm value.
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