Little light has been shed on the functioning of business in potential post-growth economies. With this paper, we aim to expand discussions on post-growth economies to the company level and suggest one possible way to connect existing management practise with the fact that, in order to stay within planetary boundaries, economic growth cannot be infinite. To that end, we conceptualise Successful Non-Growing Companies (SNCs) as one possible form of post-growth companies and examine ten existing SNCs with regard to their motivations, key performance indicators and management strategies. Results of our document analysis suggest that when different approaches towards growth in qualities are given preference over traditional quantitative growth several characteristics follow that are advantageous for the transition to a post-growth economy. We postulate the concept of Successful Non-Growing Companies has potential to support the cultural shift needed on the company level for the transformation towards post-growth on the macro level.