On the 25th September, Mark Leonard announced he is stepping down as President of Constellation Software for health reasons and Mark Miller is his replacement. For the last month, we have been interviewing former colleagues of Miller’s to understand more about him as a leader. We’ve conducted over 15 hours of interviews with Volaris Portfolio and Group Leaders globally that reported directly or indirectly to Miller, early Volaris M&A executives, and board members at non-CSI companies Miller has joined and chaired in the past. 

This report is structured to highlight the main learnings about Miller’s character from first-hand stories and experiences. The learnings are organised around the core drivers of CSIs long-term performance including capital deployment, organic growth, and talent development. 

Although we’ve been studying Constellation for ~10 years, producing this report provided a deeper level of insight into the company than we expected. We plan to replicate our IP Ref Check process for many other companies over the coming years.