The content of this article relates to the widely considered issue of ESG investing, which has both theoretical and practical dimensions. The objective of this article is to verify whether there is a correlation between the implementation of ESG strategies and financial data and indicators. The first part of the discussion highlights the essence of a socially responsible investment—a concept that postulates the consideration of social responsibility in the functioning of companies. At a further stage, an attempt is made to systematize the concepts of ESG investing, where three key aspects are highlighted, i.e., environmental, social, and corporate governance. The article also refers to the reporting non-financial data, which are indicated by SASB standards. An empirical study is conducted on the UNIMOT Group. In this respect, the adjustment of ESG strategy directions with disclosure topics defined within the oil and gas midstream sector is analyzed. Then, using the GRETL econometric package, the relationship between the selected financial data is verified for the periods analyzed, with particular emphasis on the year of implementation of the ESG strategy, i.e., 2021. The conclusions and directions for further research are presented in the final section of the article.