Biogen

BIIB

HealthcareNMS$27.8B

BIIB SEC filings last scanned 4 Oct 2026, 19:09 UTC

CEO Timeline

Christopher A. ViehbacherCurrent

Nov 2022 — Present(3y 11mo)

Christopher A. Viehbacher was appointed President and CEO of Biogen Inc., effective November 14, 2022, succeeding Michel Vounatsos.

1 source filing — click to expand

Michel Vounatsos

Jan 2017 — Nov 2022(5y 10mo)

Michel Vounatsos was appointed Chief Executive Officer of Biogen Inc., succeeding George A. Scangos, effective January 6, 2017.

announced departure in connection with appointment of new CEO

5 source filings — click to expand

George A. Scangos

Jul 2010 — Jan 2017(6y 6mo)

George A. Scangos was appointed Chief Executive Officer of Biogen Idec Inc., effective July 15, 2010.

stepped down

4 source filings — click to expand

James C. Mullen

Nov 2003 — Jun 2010(6y 7mo)

James C. Mullen became Chief Executive Officer and President of Biogen Idec Inc. upon the merger of Biogen, Inc. and Idec Pharmaceuticals Corporation in November 2003.

planned retirement

2 source filings — click to expand