The purpose of this study was to investigate how information is communicated internally in a company that acquires other companies, as well as to identify what challenges that come with that. The study looked at how the company’s management communicate internally with the employees, what communication channels they use and how they handle information internally. The study was conducted at an IT-company that has made it their business strategy to expand by acquisitions. The data was collected through qualitative interviews, a questionnaire, and internal documents. The qualitative data was then analyzed with thematic analysis and the documents with qualitative content analysis. The quantitative data that was collected through the questionnaire was analyzed with the univariant and bivariant method of analysis. The analysis showed that the leaders at the company handle and use the internal communication based on their management level as well as their employees’, and their own, conditions for communication. The analysis further showed that there aren’t any specific guidelines for the managers about how they should handle the communication, but that there are good conditions at the company for improving the internal communication. The challenges that were identified regarding internal information and communication were among others: language, expectations from management, different conditions for communication, different working conditions, as well as the organizational structure. The analysis also showed that organizational culture and how the acquisitions are handled have a large impact on how information is communicated by the management on a company that is in a constant state of change.