BIOGEN INC.
For the period ended Sep 30, 2025. Filed Oct 30, 2025.
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A company's report for each of its first three quarters. The financial statements are not audited. It shows how the business has moved since the last annual report, and what management says changed.
Sep 30, 2025 · Filed Oct 30, 2025
BIIB$254.87+2.6%Stored close · as of Nov 9, 2026
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Item 6. Exhibits
The exhibits listed below are filed or furnished as part of this Quarterly Report on Form 10-Q.
EXHIBIT INDEX
| ExhibitNumber | Description of Exhibit |
| 31.1+ | Certification of the Chief Executive Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002. |
| 31.2+ | Certification of the Chief Financial Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002. |
| 32.1++ | Certification Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002. |
| 101++ | The following materials from Biogen Inc.’s Quarterly Report on Form 10-Q for the quarter ended September 30, 2025, formatted in iXBRL (Inline Extensible Business Reporting Language): (i) the Condensed Consolidated Statements of Income, (ii) the Condensed Consolidated Statements of Comprehensive Income, (iii) the Condensed Consolidated Balance Sheets, (iv) the Condensed Consolidated Statements of Cash Flow, (v) the Condensed Consolidated Statements of Equity and (vi) Notes to Condensed Consolidated Financial Statements. |
| 104++ | The cover page from this Quarterly Report on Form 10-Q for the quarter ended September 30, 2025, formatted in Inline XBRL. |
- Filed herewith
++ Furnished herewith
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