Retirement of founder Peter Seilern 

• Founder Peter Seilern to retire as Chairman and Chief Investment Officer   
• Tassilo Seilern to succeed Peter Seilern as Executive Chairman 
• Corentin Massin promoted to Chief Investment Officer and Quentin Macfarlane to Head of Research 
• Senior leadership changes follow extensive succession planning to ensure continuity of investment philosophy and process 

Peter Seilern will retire as Chairman and Chief Investment Officer (CIO) of Seilern Investment Management Ltd. (SIM) as of the 31^st of December 2024, following a distinguished career spanning over 50 years.  He will continue to contribute to the firm he founded over 35 years ago in the capacity of Advisor to the Board. 

Tassilo Seilern will lead the business as Executive Chairman, combining his existing responsibilities as CEO with those of Chairman. Tassilo brings a wealth of experience to his new role having joined the business in 2010 as a Research Analyst. He has also worked as a Portfolio Manager, Head of Research and most recently, CEO. 

Tassilo’s appointment follows the culmination of extensive strategic planning, focused on ensuring both a seamless transition and that the firm’s strong culture and rigorous investment process will remain unchanged.  

Tassilo Seilern, incoming Executive Chairman of SIM said: “Peter’s passion for Quality Growth investing has been the cornerstone of our success, and I want to express my gratitude for his leadership as the firm enters a new chapter. Peter and I have always worked to ensure that our investment process is clear, replicable, and independent of any one individual and this transition is no exception. As Executive Chairman, my primary focus will be to uphold the principles that our success is built on, ensuring that we continue to deliver the purest Quality Growth funds to the market.”

Peter Seilern founded SIM in 1989 with the objective of adhering to pure, unchanging principles of Quality Growth investment, regardless of market environments and short-term trends. These principles have defined the firm’s investment strategy since inception, and its commitment to clear, repeatable principles guarantees continuity as the firm transitions into new leadership.   

Peter Seilern said: “After much consideration and preparation, I have decided that now is the right time to hand over the reins to a new generation, having had the pleasure of working closely with Tassilo for over a decade. The team is as strong as it has ever been, the philosophy clear and the process fully established. We are all aligned on what Seilern is and what it should be. I look forward to seeing the firm flourish under Tassilo’s leadership.” 

Tassilo Seilern will lead a senior team including Corentin Massin and Quentin Macfarlane, who have been promoted to CIO and Head of Research respectively. As CIO, Corentin will be responsible for ensuring the consistent application of Seilern’s investment philosophy and adherence to its principles. As Head of Research, Quentin will be responsible for the implementation of the investment team’s objectives and management of the research analysts.   

Tassilo Seilern added: “Both Corentin and Quentin embody the values of Quality Growth investing and demonstrate our commitment to nurturing talent through deep immersion in our philosophy. Over more than a decade at Seilern, Corentin has comprehensively internalized our process and has been a key player in our recent growth, and Quentin brings an energy and tenacity that will drive our research efforts and maintain our rigorous standards. I am looking forward to working with them in their new roles.” 

For further information, please read the Letter to Investors or watch the Interview with Peter Seilern, and his successor, Tassilo Seilern, look back at the past 35 years, reflecting on the firm’s founding principles, history, and future of Seilern Investment Management Ltd.