OUR PURPOSE PIONEERING SCIENCE ENVIRONMENT COMMUNITY REPORTING 69 ENABLING EMPLOYEES TO THRIVE BIOGEN 2021 YEAR IN REVIEW PATIENTS OUR PEOPLE Emphasizing workplace health, safety and well-being We want every Biogen employee to feel healthy, safe and productive at work. We believe every employee has a role in advancing health and safety, whether work happens in the lab, in an office or in a manufacturing plant. Cultivating a safe workplace helps advance our purpose of enabling everyone to live healthier, fuller lives. Navigating the pandemic The second year of the pandemic presented both ongoing and new challenges, and Biogen continued to focus on ways to keep employees healthy and promote well-being. As the COVID-19 pandemic continued to evolve, Biogen took a multilayered approach to protect the health and safety of our employees, partners and communities. This included requiring health screenings, providing face masks and sanitizer, modifying HVAC and introducing a COVID-19 Vaccine Policy for U.S. personnel. We have a deep sense of gratitude to our workers in the labs and manufacturing facilities who have continued their work with strict safety measures in place. Many of our employees continued to work from home as we rolled out our WoW program to deliver both employee safety and productivity. To support Off-Campus and Field employees hired after Sept. 1, 2021, we provide a $1,500 stipend to purchase home office equipment. Off- Campus and Field employees hired prior to this date and hybrid workers may expense home office equipment according to company guidelines. Our state-of-the-art Bright Horizons Child Care Centers on our campuses in Cambridge, Massachusetts, and RTP, North Carolina, offer reliable childcare and early education programs to support up to 175 children, with enhanced health and safety protocols that keep children, staff and families safe. Whether employees are working on campus, off campus or hybrid, the centers offer full- and part-time schedules to meet employee needs. Through our partnership with Bright Horizons, employees also have access to a nationwide backup care network for loved ones of all ages (children and elders), including center-based care (for children) and in-home care (for children and elders). New for 2022, virtual camps, powered by Steve and Kate’s Camp, are available through the Bright Horizons backup care benefit. This program offers kids (ages 3-12) a wide variety of fun and educational activities including arts and crafts, coding, competitions, fitness, game design and more. To support families who have experienced disruptions in caregiving support, we sustained an increased level of funding for backup “crisis care” services, offering $100/day in childcare reimbursement for up to 80 days through 2021. Employees were able to use crisis care to reimburse members of their own personal networks to provide childcare if other care options were unavailable. Employees also can access free membership at Sittercity, discounted tutoring, test prep, enrichment programs and discounts on a personalized nanny placement service. For added support, we continue to facilitate home errands through our Circles Concierge service. Mental health and well-being With mental health a rising concern, Biogen assessed our healthcare coverage offerings and determined that 100% of our U.S. employees have access to quality counseling services within our network. For increased coverage, we virtualized Biogen’s on-site counselors so employees working from home can more easily access support. Our mental and well-being offerings include: Global – Headspace: Meditation and mindfulness program via self- administered digital tool. – Employee and Family Solutions: Virtual or in-person short-term counseling, psychological support and managing ongoing issues with a coach and/or therapist. U.S. – Learn to Live: Self-paced, online cognitive behavioral therapy program with coaching. – Talkspace: Counseling support through text, video and/or phone. – Blue Cross Blue Shield: Full behavior health support that provides in and outpatient facility-based support, in-person and virtual counseling and specialist support.

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