OUR PURPOSE PIONEERING SCIENCE ENVIRONMENT COMMUNITY REPORTING 58 BIOGEN 2021 YEAR IN REVIEW PATIENTS OUR PEOPLE OUR PEOPLE 53.1% management-level positions and above held by females 9 Employee Resource Networks with ~2,300 employees 100% on the Disability Equality Index for the 4 th consecutive year 100% Equality Index’s Best Places to Work for LGBTQ+ Equality for 8 th consecutive year Mona Kotecha, Executive Medical Director of Clinical Development.

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