Brendan O’Callaghan

Executive Vice President, Manufacturing and Supply
Brendan O’Callaghan, Executive Vice President, Manufacturing and Supply

At a Glance



Education and Business Experience

Brendan O’Callaghan leads an international network of manufacturing and distribution sites. His ambition is to enable successful commercialization of Sanofi’s diverse pipeline, to build world-class standards of manufacturing and supply chain excellence and to future proof Sanofi’s manufacturing network, leveraging the latest digital, process and technology solutions, to ensure the continued reliable supply of essential, high-quality medicines to patients worldwide. 

Brendan joined Sanofi in 2015 and was previously our Global Head of Biologics and Manufacturing and Supply head of the Specialty Care portfolio. He has played a key role in supporting our transformation to a fully integrated BioPharma company and advancing the digital transformation of our manufacturing network, notably the Framingham site in the US, which was awarded the prestigious International Society for Pharmaceutical Engineering Factory of the Future and Facility of the Year Awards in 2020.


Prior to Sanofi, Brendan worked at Schering-Plough before moving to Merck / MSD as Head of Biologics and later Vice President of its Europe, Middle East and Africa Operations.


Brendan graduated in chemical engineering from the University College of Dublin, where he currently serves as an honorary adjunct Professor of Chemical and Biochemical Engineering.


He is married with four sons. A keen sports enthusiast, Brendan is a UEFA qualified soccer coach, with a specialization in Goalkeepers. 

I see Manufacturing and Supply as the bridge between R&D and the patients we serve, an essential link in enabling us to bring the best of our scientific discoveries, breakthrough medicines to people around the world.

Brendan O’Callaghan

Executive Vice President, Manufacturing and Supply

Directorships & Appointments

Inside the Sanofi Group

Executive Vice President, Manufacturing and Supply

Meet the Sanofi Executive Committee

Paul Hudson

Chief Executive Officer