In general, circular economy development is about a system-level change towards significantly enhanced circularity and sustainability encompassing both biological and technical cycles. This study aimed at exploring, identifying, analyzing and synthesizing how companies in the Kymenlaakso region perceive circular economy management, assessment and reporting. This study applied a qualitative research approach using a questionnaire survey as the specific method. The responding companies are of many sizes and represent multiple sectors such as industry, construction and various services. This study addressed a clear gap in research on company-level perspectives. The results indicate that recycling and recovery of materials are perceived as particularly important by companies. In addition, the principles of CE (10Rs) are considered to be important by most companies. Essential management approaches encompass, for example, CE strategy and goals, business ecosystems and development of markets for recycled and recovered products and parts. Companies considered that recycling, recovery, waste minimization and utilization of waste as a raw material, as well as an increase in recycled content in products, reduction in disposable products and prevention of premature obsolescence, are important CE assessment and measurement approaches. For example, continuous reporting of CE as a part of online communication of companies (i.a. sustainability and responsibility), the definition of best practices and best available techniques for CE, and reporting in the whole supply and value chain were perceived as important ways to report CE. However, it is noteworthy that many of the studied aspects of CE were not perceived to be important by companies. Overall, this study contributes to a better understanding of the current state of and future outlook on circular economy development in the studied region and also highlights relevant management, assessment and reporting aspects from the perspective of local companies.