The main aim of this paper is to present the results of sustainability reporting and digital transformation in an international bank which operates in Serbia. This paper contributes to the existing literature of sustainability and digital transformation in developing countries. The mix-method has been used. Quantitative data have been collected from 355 managers from the observed bank. The qualitative data were sourced from publicity available information regarding 2020 and 2021. The results of quantitative data, processed by appropriate statistical procedures, pointed to self-reinforcement stage of digital transformation. The analysis of sustainability indicators revealed the higher values of Bank Contribution to the “Social Product”, and training and new employment. In 2021, it is evidenced the higher rate of turnover that implicated to new human resource strategy. The findings add to the existing literature on sustainability and digitization in cross-cultural organizational contexts. The practical implementation suggestions for managers are suggested, too.