Rethinking the Role of M&As in Promoting Sustainable Development: Empirical Evidence Regarding the Relation Between the Audit Opinion and the Sustainable Performance of the Romanian Target Companies

External growth strategies face crucial barriers when taken into consideration for investing if the involved companies are not audited. The integrity of a company’s financial information, its control systems, and its sustainable behavior represent cornerstones when participating in mergers and acquisitions (henceforth M&As). Thus, the audit function became a must and its role increased over the years, becoming an intrinsic part of faithfully disclosing financial and nonfinancial information (sustainable reporting included). M&As are ideal when the need for rapid innovation is required, in order to maintain or develop a sustainability policy. Given the environmental issues, we analyzed a sample of 1491 target companies listed on Bucharest Stock Exchange, clustered into three categories: polluters, medium polluters, and low polluters. The study reveals that the investors’ decision to purchase a certain amount of stake in target companies is influenced by the audit opinion and the sector in which they operate, depending on their pollution status.