OUR PURPOSE PIONEERING SCIENCE REPORTING 96 BIOGEN 2021 YEAR IN REVIEW PATIENTS OUR PEOPLE ENVIRONMENT COMMUNITY COMMUNITY Biogen is dedicated to advancing public health and education in the places where we live and work. In 2021, we cared deeply, worked fearlessly and changed lives around the world. EXECUTIVE SUMMARY 2021 SNAPSHOT At Biogen, we strive to have an impact beyond our medicines by building and supporting communities through our three focus areas - caring deeply for neighbors in need, working fearlessly for health equity, and changing lives through science. This year, we celebrate a series of milestones and accomplishments reflecting these guiding principles. We have actively supported communities and livelihoods through our corporate giving. In 2021, we provided $14 million in medical grants and $57 million in sponsorships to organizations around the world. We also distributed $6 million in grants to worthy nonprofits via the Biogen Foundation. Through it all, we continue to cultivate meaningful relationships with stakeholders that share our vision of serving humanity through science and caring deeply. Employee engagement is essential to our mission, and Biogen employees personally contributed their time and talents to our communities this year. Celebrating the 10th anniversary of Care Deeply Day, the Biogen annual day of service, we hosted a Care Deeply Challenge, calling on employees to contribute 10,000 volunteer hours in 2021. Employees smashed the goal, serving 14,493 hours – more than triple the hours from the year prior. Finally, we begin our celebration of the 20th anniversary of the Biogen Foundation and the Community Lab. Founded on a commitment to increasing access to science education, the Biogen Foundation remains dedicated to this aim, as well as to serving those most vulnerable in the communities in which we live and work. Since 2002, the Foundation has provided more than $70 million to organizations making an impact in our communities worldwide. The Community Lab, the longest-running hands-on corporate community science lab in the U.S., has continued to bolster and nourish student interest in science and biotechnology- related careers. Although for COVID safety, we have not been able to host students in person at our Community Labs in Massachusetts and North Carolina, we have shifted to provide dynamic online Community Lab experiences, to our school partners not only in the U.S., but worldwide. Through virtual science experiences and interactions with scientists and biotech professionals, we served more than 3,600 students in 19 countries in 2021. Engaging diverse stakeholders In recent years, we’ve listened to and engaged in the dialogue about stakeholder capitalism, in which companies seek long-term value creation by taking into account the needs of all their stakeholders and society at large. As a purpose-driven company, Biogen has long worked to balance and address the interests of a variety of stakeholders through our core business and community engagement initiatives. Diverse perspectives are critical to informing our community engagement strategies and advancing our goal of a healthier, more sustainable and equitable world. We are an active member in a variety of associations and regularly engage with and listen to a wide variety of external audiences, including: – Biotech and pharmaceutical industry associations such as the Biopharma Sustainability Roundtable, MassBioEd, the Pharmaceutical Research and Manufacturers of America (PhRMA) and Biotechnology Innovation Organization (BIO), where Biogen executives spoke in 2021 to encourage collaborations that address climate, health and equity. – Environmental groups such as Ceres and the Environmental League of Massachusetts. – Government bodies and regulators such as the U.S. government through our Small Business Program and with the FDA or the European Medicines Agency (EMA) to ensure that new and innovative therapies are commercially available to the patients who need them.

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