Background: A nexus between the individual practice of mindfulness and sustainable behaviours has recently been unearthed all the while existing research tackling this connection on an organisational level is close to non-existing. Even so, corporate mindfulness has been object of extensive research in the past decades confirming increases in organisational and employee wellbeing. Given the need for sustainable development in contemporary society and for businesses to embrace this responsibility, the potential of such a connection is remarkable. Purpose: This thesis aims to explore the nexus between corporate mindfulness and the adoption of sustainability practices and the facilitation of change processes in business. Method: The study follows an interpretivist approach and is based on two cases, which are analysed and compared. Qualitative semi-structured interviews with open questions are conducted. Particular attention is given to the quality of the data and the ethical considerations accompanying the data collection. Findings: The findings present the interconnection of corporate mindfulness, sustainability adoption and organisational change. This is graphically represented in the Mindfulness-Sustainability Nexus Model (MSNM). Respondents, being mindfulness practitioners, acknowledge the overarching inability to ignore the sustainability challenge and the organisational impact on present and future generations. Moreover, intrinsic values get to the surface, both at the individual and organisational level, which are essential for long-tern sustainability practices. With the CBMT, old organisational structures are perceived as outdated and are remodelled as a result. Ultimately, in this research, the role of stakeholder engagement as well as a culture of openness are essential to embrace changes and to enhance sustainability.