Jan Sigger is an accomplished leader in the pharmaceutical and medical device sectors, currently serving as the Chairman of the Board at Solstice Pharmaceuticals B.V., which specializes in monodisperse microbubbles for diagnostic and therapeutic uses. Sigger is also the Founder and Strategic Adviser as well as the CEO of Quirem Medical, a company focused on developing radioactive microspheres for Selective Internal Radiation Therapy. Additionally, Sigger holds the position of Chairman of the Supervisory Board at both Sirius Medical, which designs surgical devices for oncology, and OCON Orthopedische kliniek, a prominent orthopedic service provider in the Netherlands. Previous roles include COO at Cellnovo Ltd, CFO at Nucletron, Finance Director at Akzo Nobel Industrial Chemicals, and Finance Manager at Brunei Shell Companies.