BOSTON, MA (March 5, 2026) – L.E.K. Consulting, a global strategy consulting firm, today announced that Michael Retterath has joined the firm as a Managing Director in its Healthcare and Life Sciences Performance Improvement practice. Based in New York, Retterath brings more than 25 years of experience as a senior executive and strategy consultant to biopharma, medtech and healthcare services companies in both the US and Europe. He has led enterprise transformations spanning portfolio strategy, capability building, operating model redesign, performance improvement programs and post-merger integration.
Retterath joins L.E.K. from Spark Therapeutics (a member of the Roche Group), where he served as Chief Business Officer and Chief Financial Officer. In these roles, he led enterprise strategy, finance, business development and IT, and oversaw a multi-year portfolio review and a comprehensive organizational transformation to support the company’s next phase of growth and align with Roche’s strategic priorities. He also led a major cost initiative that delivered more than $200 million in operating expense savings and played a central role in the Spark–Roche integration.
“Michael Retterath’s experience sits at the intersection of strategy and execution,” said Manny Picciola, Managing Director and Head of the Americas region. “He has not only advised organizations on transformations—he has led them from the inside. His ability to translate strategic ambition into effective organizational design and sustainable cost structures will be tremendously valuable to our clients.”
Prior to Spark, Retterath was a partner at a top global consulting firm, where he advised biopharma and pharma services clients on portfolio and commercial strategy, organizational transformations and post-merger integrations.
Earlier in his career, Retterath held senior executive roles in Europe at Sanofi and Boehringer Mannheim (now Roche), leading R&D and marketing teams and overseeing strategy and business development initiatives in their diagnostics and life sciences businesses.
“Healthcare organizations are navigating the need to manage increasing complex science, including the role of AI, while also working in a world of greater capital constraints and operational pressure,” said Retterath. “I am excited to join L.E.K. because I believe the firm’s market-leading healthcare expertise coupled with its reputation for strategic rigor will position it well to meet these challenges. Our expanded team can help clients not only define winning strategies but build the capabilities and organizations needed to execute them successfully.”
Retterath holds an MBA from INSEAD and a Master of Science in Molecular Biology and Bachelor of Science in Biochemistry from the University of Waterloo. He is fluent in French and German and has worked extensively across North America and Europe.
About L.E.K. Consulting
We're L.E.K. Consulting, a global strategy consultancy working with business leaders to seize competitive advantage and amplify growth. Our insights are catalysts that reshape the trajectory of our clients' businesses, uncovering opportunities and empowering them to master their moments of truth. Since 1983, our worldwide practice – spanning the Americas, Europe, the Middle East and Asia-Pacific — has guided leaders across all industries, from global corporations to emerging entrepreneurial businesses and private equity investors. Looking for more? Visit www.lek.com.
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