0000875045 2025-05-01 2025-05-01 0000875045 1 2025-05-01 2025-05-01 0000875045 2 2025-05-01 2025-05-01 0000875045 3 2025-05-01 2025-05-01 iso4217:USD pure shares 0000875045 424B2 EX-FILING FEES 5.05% Senior Notes due 2031 5.75% Senior Notes due 2035 6.45% Senior Notes due 2055 Biogen Inc. false false false Debt true 400000000 0.99981 399924000 0.0001531 61228.37 Debt true 650000000 0.99924 649506000 0.0001531 99439.37 Debt true 700000000 0.99657 697599000 0.0001531 106802.41 1747029000 267470.15 0 0 267470.15 This registration fee table shall be deemed to update the “Calculation of Filing Fee Tables” in the Company’s Registration Statement on Form <div style="white-space: nowrap; letter-spacing: 0px; top: 0px;display:inline;">S-3ASR</div> (File <div style="white-space: nowrap; letter-spacing: 0px; top: 0px;display:inline;">No. 333-286915)</div> in accordance with Rules 456(b) and 457(r) under the Securities Act of 1933, as amended. This registration fee table shall be deemed to update the “Calculation of Filing Fee Tables” in the Company’s Registration Statement on Form <div style="white-space: nowrap; letter-spacing: 0px; top: 0px;display:inline;">S-3ASR</div> (File <div style="white-space: nowrap; letter-spacing: 0px; top: 0px;display:inline;">No. 333-286915)</div> in accordance with Rules 456(b) and 457(r) under the Securities Act of 1933, as amended. This registration fee table shall be deemed to update the “Calculation of Filing Fee Tables” in the Company’s Registration Statement on Form <div style="white-space: nowrap; letter-spacing: 0px; top: 0px;display:inline;">S-3ASR</div> (File <div style="white-space: nowrap; letter-spacing: 0px; top: 0px;display:inline;">No. 333-286915)</div> in accordance with Rules 456(b) and 457(r) under the Securities Act of 1933, as amended. S-3 333-286915