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Biogen Inc. — SEC Filings — 10-K, 10-Q, 8-K

BIIB
NASDAQHealthcareDrug Manufacturers - GeneralCIK 0000875045biogen.comAbout BIIB
Last close · Oct 16, 2026232.65−2.70 (−1.15%)
Market cap$34.4B

What the company itself has filed with the SEC: annual and quarterly reports, 8-K current reports with the earnings press release, proxy statements and securities offerings. The originals, each linked to EDGAR.

SEC filings

57 since 2023-10-18
  1. 2026-07-2910-Q
    Quarterly report · period ended 2026-06-30
    Filing ↗
  2. 2026-07-298-K
    2.02Results of Operations (Earnings)9.01Financial Statements and Exhibits
    Press release ↗Filing ↗
  3. 2026-07-018-K
    2.02Results of Operations (Earnings)
    Filing ↗
  4. 2026-06-108-K
    5.07Submission of Matters to a Shareholder Vote
    Filing ↗
  5. 2026-06-108-K
    9.01Financial Statements and Exhibits
    Filing ↗
  6. 2026-05-148-K
    1.01Entry into a Material Agreement2.01Completion of Acquisition/Disposition2.03Creation of a Direct Financial Obligation7.01Regulation FD Disclosure9.01Financial Statements and Exhibits
    Filing ↗
  7. 2026-04-2910-Q
    Quarterly report · period ended 2026-03-31
    Filing ↗
  8. 2026-04-298-K
    2.02Results of Operations (Earnings)9.01Financial Statements and Exhibits
    Press release ↗Filing ↗
  9. 2026-04-28ARS
    Annual report to shareholders · period ended 2025-12-31
    Filing ↗
  10. 2026-04-28DEFA14A
    Additional proxy materials
    Filing ↗
  11. 2026-04-28DEF 14A
    Proxy statement
    Filing ↗
  12. 2026-04-068-K
    2.02Results of Operations (Earnings)
    Filing ↗
  13. 2026-03-318-K
    1.01Entry into a Material Agreement8.01Other Events9.01Financial Statements and Exhibits
    Filing ↗
  14. 2026-03-118-K
    5.02Departure/Election of Directors or Officers
    Filing ↗
  15. 2026-02-118-K
    5.02Departure/Election of Directors or Officers8.01Other Events
    Filing ↗
  16. 2026-02-0610-K
    Annual report · period ended 2025-12-31
    Filing ↗
  17. 2026-02-068-K
    2.02Results of Operations (Earnings)9.01Financial Statements and Exhibits
    Press release ↗Filing ↗
  18. 2026-01-148-K
    2.02Results of Operations (Earnings)
    Filing ↗
  19. 2025-10-3010-Q
    Quarterly report · period ended 2025-09-30
    Filing ↗
  20. 2025-10-308-K
    2.02Results of Operations (Earnings)9.01Financial Statements and Exhibits
    Press release ↗Filing ↗
  21. 2025-10-148-K
    2.02Results of Operations (Earnings)9.01Financial Statements and Exhibits
    Filing ↗
  22. 2025-07-318-K
    2.02Results of Operations (Earnings)9.01Financial Statements and Exhibits
    Press release ↗Filing ↗
  23. 2025-07-3110-Q
    Quarterly report · period ended 2025-06-30
    Filing ↗
  24. 2025-07-078-K
    2.02Results of Operations (Earnings)9.01Financial Statements and Exhibits
    Filing ↗
  25. 2025-06-238-K
    5.07Submission of Matters to a Shareholder Vote9.01Financial Statements and Exhibits
    Filing ↗
  26. 2025-06-02DEFA14A
    Additional proxy materials
    Filing ↗
  27. 2025-05-128-K
    8.01Other Events9.01Financial Statements and Exhibits
    Filing ↗
  28. 2025-05-01S-3ASR
    Shelf registration (automatic)
    Filing ↗
  29. 2025-05-0110-Q
    Quarterly report · period ended 2025-03-31
    Filing ↗
  30. 2025-05-018-K
    2.02Results of Operations (Earnings)9.01Financial Statements and Exhibits
    Press release ↗Filing ↗
  31. 2025-04-28ARS
    Annual report to shareholders · period ended 2024-12-31
    Filing ↗
  32. 2025-04-28DEFA14A
    Additional proxy materials
    Filing ↗
  33. 2025-04-28DEF 14A
    Proxy statement
    Filing ↗
  34. 2025-02-1210-K
    Annual report · period ended 2024-12-31
    Filing ↗
  35. 2025-02-128-K
    2.02Results of Operations (Earnings)9.01Financial Statements and Exhibits
    Press release ↗Filing ↗
  36. 2025-01-158-K
    5.02Departure/Election of Directors or Officers
    Filing ↗
  37. 2024-10-308-K
    5.02Departure/Election of Directors or Officers7.01Regulation FD Disclosure9.01Financial Statements and Exhibits
    Filing ↗
  38. 2024-10-3010-Q
    Quarterly report · period ended 2024-09-30
    Filing ↗
  39. 2024-10-308-K
    2.02Results of Operations (Earnings)9.01Financial Statements and Exhibits
    Press release ↗Filing ↗
  40. 2024-09-128-K
    5.02Departure/Election of Directors or Officers
    Filing ↗
  41. 2024-08-148-K
    1.01Entry into a Material Agreement1.02Termination of a Material Agreement2.03Creation of a Direct Financial Obligation9.01Financial Statements and Exhibits
    Filing ↗
  42. 2024-08-0110-Q
    Quarterly report · period ended 2024-06-30
    Filing ↗
  43. 2024-08-018-K
    2.02Results of Operations (Earnings)9.01Financial Statements and Exhibits
    Press release ↗Filing ↗
  44. 2024-06-258-K
    5.03Amendment to Articles/Bylaws5.07Submission of Matters to a Shareholder Vote9.01Financial Statements and Exhibits
    Filing ↗
  45. 2024-06-20S-8
    Employee stock plan registration
    Filing ↗
  46. 2024-04-26ARS
    Annual report to shareholders · period ended 2023-12-31
    Filing ↗
  47. 2024-04-26DEFA14A
    Additional proxy materials
    Filing ↗
  48. 2024-04-26DEF 14A
    Proxy statement
    Filing ↗
  49. 2024-04-2410-Q
    Quarterly report · period ended 2024-03-31
    Filing ↗
  50. 2024-04-248-K
    2.02Results of Operations (Earnings)9.01Financial Statements and Exhibits
    Press release ↗Filing ↗
  51. 2024-04-12PRE 14A
    Preliminary proxy statement
    Filing ↗
  52. 2024-02-1410-K
    Annual report · period ended 2023-12-31
    Filing ↗
  53. 2024-02-138-K
    2.02Results of Operations (Earnings)9.01Financial Statements and Exhibits
    Press release ↗Filing ↗
  54. 2023-12-128-K
    5.03Amendment to Articles/Bylaws9.01Financial Statements and Exhibits
    Filing ↗
  55. 2023-11-088-K
    5.02Departure/Election of Directors or Officers
    Filing ↗
  56. 2023-11-0810-Q
    Quarterly report · period ended 2023-09-30
    Filing ↗
  57. 2023-11-088-K
    2.02Results of Operations (Earnings)9.01Financial Statements and Exhibits
    Press release ↗Filing ↗

Filings the company made itself, as EDGAR lists them; the documents stay on EDGAR. An 8-K is a current report, its item codes read from the filing metadata and coloured by materiality: high bankruptcy, delisting, restatement, change of control · material earnings, M&A, leadership · routine exhibits, Reg FD, votes. Insider trades (Form 4) are on Insiders; 13D/13G and 13F holders on Ownership.