BIIB
Biogen·NASDAQ
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BIIB Filings
Filing Date
Form Description
Form Type
2026-02-06
Biogen Inc. (BIIB) Q4 2025 Earnings Call Transcript
Earnings Call
2026-02-06 · Earnings Call
Biogen Inc. (BIIB) Q4 2025 Earnings Call Transcript
2026-02-06
Form 10-K - Annual report [Section 13 and 15(d), not S-K Item 405]
Financials
2026-02-06 · Financials
Form 10-K - Annual report [Section 13 and 15(d), not S-K Item 405]
2026-02-06
Form 8-K - Current report
Key Events
2026-02-06 · Key Events
Form 8-K - Current report
2026-02-05
Form SCHEDULE 13G - Statement of Beneficial Ownership by Certain Investors
2026-02-05 ·
Form SCHEDULE 13G - Statement of Beneficial Ownership by Certain Investors
2026-02-03
Form 4 - Statement of changes in beneficial ownership of securities
Ownership
2026-02-03 · Ownership
Form 4 - Statement of changes in beneficial ownership of securities
2026-02-02
Form 144 - Report of proposed sale of securities
Ownership
2026-02-02 · Ownership
Form 144 - Report of proposed sale of securities
2026-01-14
Form 8-K - Current report
Key Events
2026-01-14 · Key Events
Form 8-K - Current report
2025-12-03
Form 4 - Statement of changes in beneficial ownership of securities
Ownership
2025-12-03 · Ownership
Form 4 - Statement of changes in beneficial ownership of securities
2025-11-13
Form SCHEDULE 13G/A - Statement of Beneficial Ownership by Certain Investors: [Amend]
2025-11-13 ·
Form SCHEDULE 13G/A - Statement of Beneficial Ownership by Certain Investors: [Amend]
2025-11-10
Form SCHEDULE 13G - Statement of Beneficial Ownership by Certain Investors
2025-11-10 ·
Form SCHEDULE 13G - Statement of Beneficial Ownership by Certain Investors
