This paper aims to analyse how discourse mediates change in the Danish pharmaceutical company M. The core research method used in this study is nexus analysis, with a focus on discourse analysis, which is an integral part of navigating the nexus of practice. Both quantitative and qualitative methods are used in the study. Following Scollon & Scollon’s practical fieldguide for mediated discourse analysis reveals the mediated actions, social actors and discourses in place in M’s transformation journey, as well as how these elements interact with each other in the creation of discourses about transformation. Through engagement in the nexus of practice at M, a number of nexus points/key incidents are identified. The discourses throughout these nexus points are then identified and classified via thematic analysis and evaluated from a critical discourse analysis perspective. For a quantitative analysis, two specialized corpora are created from internal communication materials in M: a leadership corpus and an employee corpus. The analysis reveals the many ways in which the communication department mediates transformation communication in M. The study also identifies gaps in the transformation communication – both between leadership and employees of M, but also between leadership communication and M’s language policy.