CompanyScope

Biogen Inc. 10-K and 10-Q filings

Ticker BIIB · SEC CIK 875045 · Latest fiscal year ended Dec 31, 2025

Biogen Inc. has 17 annual reports and 53 quarterly reports with XBRL financial data on SEC EDGAR, filed between Jul 17, 2009 and Oct 28, 2026. Each link opens the filing's index page on sec.gov, where you can read the full document.

FiledFormAccession numberDocument
Oct 28, 202610-Q0000875045-26-000096View on SEC EDGAR
Jul 29, 202610-Q0000875045-26-000075View on SEC EDGAR
Apr 29, 202610-Q0000875045-26-000045View on SEC EDGAR
Feb 6, 202610-K0000875045-26-000013View on SEC EDGAR
Oct 30, 202510-Q0000875045-25-000049View on SEC EDGAR
Jul 31, 202510-Q0000875045-25-000033View on SEC EDGAR
May 1, 202510-Q0000875045-25-000018View on SEC EDGAR
Feb 12, 202510-K0000875045-25-000009View on SEC EDGAR
Oct 30, 202410-Q0000875045-24-000032View on SEC EDGAR
Aug 1, 202410-Q0000875045-24-000025View on SEC EDGAR
Apr 24, 202410-Q0000875045-24-000016View on SEC EDGAR
Feb 14, 202410-K0000875045-24-000009View on SEC EDGAR
Nov 8, 202310-Q0000875045-23-000038View on SEC EDGAR
Jul 25, 202310-Q0000875045-23-000030View on SEC EDGAR
Apr 25, 202310-Q0000875045-23-000016View on SEC EDGAR
Feb 15, 202310-K0000875045-23-000009View on SEC EDGAR
Oct 25, 202210-Q0000875045-22-000031View on SEC EDGAR
Jul 20, 202210-Q0000875045-22-000025View on SEC EDGAR
May 3, 202210-Q0000875045-22-000016View on SEC EDGAR
Feb 3, 202210-K0000875045-22-000007View on SEC EDGAR
Oct 20, 202110-Q0000875045-21-000052View on SEC EDGAR
Jul 22, 202110-Q0000875045-21-000044View on SEC EDGAR
Apr 22, 202110-Q0000875045-21-000028View on SEC EDGAR
Feb 3, 202110-K0000875045-21-000010View on SEC EDGAR
Oct 21, 202010-Q0000875045-20-000036View on SEC EDGAR
Jul 22, 202010-Q0000875045-20-000022View on SEC EDGAR
Apr 23, 202010-Q0000875045-20-000011View on SEC EDGAR
Feb 6, 202010-K0000875045-20-000005View on SEC EDGAR
Oct 22, 201910-Q0000875045-19-000041View on SEC EDGAR
Jul 24, 201910-Q0000875045-19-000029View on SEC EDGAR
Apr 24, 201910-Q0000875045-19-000017View on SEC EDGAR
Feb 6, 201910-K0000875045-19-000006View on SEC EDGAR
Oct 23, 201810-Q0000875045-18-000032View on SEC EDGAR
Jul 24, 201810-Q0000875045-18-000019View on SEC EDGAR
Apr 24, 201810-Q0000875045-18-000010View on SEC EDGAR
Feb 1, 201810-K0000875045-18-000005View on SEC EDGAR
Oct 24, 201710-Q0000875045-17-000029View on SEC EDGAR
Jul 25, 201710-Q0000875045-17-000024View on SEC EDGAR
Apr 25, 201710-Q0000875045-17-000017View on SEC EDGAR
Feb 2, 201710-K0000875045-17-000009View on SEC EDGAR
Oct 26, 201610-Q0000875045-16-000071View on SEC EDGAR
Jul 21, 201610-Q0000875045-16-000065View on SEC EDGAR
Apr 21, 201610-Q0000875045-16-000050View on SEC EDGAR
Feb 3, 201610-K0000875045-16-000042View on SEC EDGAR
Oct 21, 201510-Q0000875045-15-000034View on SEC EDGAR
Jul 24, 201510-Q0000875045-15-000024View on SEC EDGAR
Apr 24, 201510-Q0000875045-15-000014View on SEC EDGAR
Feb 4, 201510-K0000875045-15-000005View on SEC EDGAR
Oct 22, 201410-Q0000875045-14-000022View on SEC EDGAR
Jul 23, 201410-Q0000875045-14-000016View on SEC EDGAR
Apr 23, 201410-Q0000875045-14-000011View on SEC EDGAR
Feb 6, 201410-K0000875045-14-000004View on SEC EDGAR
Oct 28, 201310-Q0000875045-13-000034View on SEC EDGAR
Jul 25, 201310-Q0000875045-13-000027View on SEC EDGAR
Apr 25, 201310-Q0000875045-13-000018View on SEC EDGAR
Feb 5, 201310-K0000875045-13-000006View on SEC EDGAR
Oct 25, 201210-Q0000875045-12-000010View on SEC EDGAR
Jul 24, 201210-Q0001193125-12-312222View on SEC EDGAR
May 1, 201210-Q0001193125-12-200855View on SEC EDGAR
Feb 3, 201210-K0001193125-12-039072View on SEC EDGAR
Oct 28, 201110-Q0000950123-11-092986View on SEC EDGAR
Jul 26, 201110-Q0000950123-11-068367View on SEC EDGAR
Apr 21, 201110-Q0000950123-11-037561View on SEC EDGAR
Feb 4, 201110-K0000950123-11-009300View on SEC EDGAR
Oct 26, 201010-Q0000950123-10-096037View on SEC EDGAR
Jul 20, 201010-Q0000950123-10-066527View on SEC EDGAR
Apr 20, 201010-Q0000950123-10-036233View on SEC EDGAR
Feb 9, 201010-K0000950123-10-010528View on SEC EDGAR
Oct 21, 200910-Q0000950123-09-051956View on SEC EDGAR
Jul 17, 200910-Q0000950123-09-022892View on SEC EDGAR

This list covers filings that contain XBRL financial data (generally from 2009 onward). It does not include 8-Ks, proxy statements or other forms. For the complete history, see Biogen Inc. on EDGAR.

Source: SEC EDGAR XBRL company facts for CIK 875045 (raw data). Most recent filing in this dataset: 10-Q filed Oct 28, 2026. SEC data file dated Nov 3, 2026; page built Nov 5, 2026. Figures are as most recently reported, including restatements. How we select figures.