Management team

Promethera® has attracted an experienced management team of international experts based at our facilities in Belgium, the US, Japan and Switzerland.

John Tchelingerian – PhD

President & CEO

Etienne Sokal – MD, PhD

Founder & Group CMO

Bertrand Lellouche – MBA

Group CFO

Nathalie Belmonte – PhD


Luc Otten – MD, PhD


Paul Smith

VP of Regulatory Affairs

Nathalie Clerget – PhD

VP of Clinical Development

Michihiro Maeda

General Manager Japan Branch