The capital structure decision is one of the most vital financial decisions of the corporation that consists of determining the optimal combination of equity and debt for the companies that would reduce the cost of capital. The examination of the capital structure has always gained importance especially in the theoretical and empirical studies while there is no study of the relationship between the environmental, social, and governance (ESG), the ownership structure, and the cost of capital. In this context, this paper aims to examine the potential impacts of the ESG disclosure and ownership structure on the cost of capital by using a sample of 30 companies listed on the UAE financial markets (Abu Dhabi Stock Exchange and Dubai Financial Market) during the period 2010–2019. The data show that there is an increasing trend in the different non-financial corporate disclosures. The empirical results of various models show that the ESG disclosure, the insider and the institutional ownerships have negative and significant impacts on the cost of capital. Furthermore, the environmental and the governance disclosures reduce the cost of capital. This paper demonstrates the strong role played by the ESG disclosure and the ownership structure in reducing the cost of capital for the companies. These results would encourage the companies in implementing the best practices of the non-financial disclosures and regulating their corporate governance mechanisms.
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