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BIIBBiogen

Health care · Biotechnology · Nasdaq
BIIB quote by TradingView
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Filings with the SEC since Sep 22, 2014

1,000 filings, 3 in the last 30 days

SEC filing index
Latest annual reportOpen ↗
Feb 6, 2026
10-K, period to Dec 31, 2025
Latest quarterly reportOpen ↗
Oct 28, 2026
10-Q, period to Sep 30, 2026
Latest current reportOpen ↗
Oct 28, 2026
8-K: Quarterly results
Filed in the last 30 days
3
of 1,000 in all
Timeline

Every filing on one line

1 yr2 yr3 yr
Annual report (10-K)Quarterly report (10-Q)Current report (8-K)Auditor changeCEO, CFO, COO or CAO changeRestatementLate filing noticeInsider purchaseCluster buy (3+ insiders)SEC comment letterShare offering (S-3, 424B)
All 31 events

From the SEC filing index. Insider purchases go back 180 days (the Form 4s downloaded).

Every filing

Newest first, by kind

Each form links to sec.gov
All 1000 Annual & quarterly 49Current reports (8-K) 123Insiders 671Proxy & votes 38Big owners (13D/13G) 66Shares & debt offered 17SEC letters 17Other 19
FiledFormWhat it isPeriod
Nov 2, 20264 Insider tradeOct 30, 2026 all files
Oct 28, 202610-Q Quarterly reportSep 30, 2026 all files · tables
Oct 28, 20268-K Quarterly resultsOct 28, 2026 all files
Oct 5, 20264 Insider tradeOct 1, 2026 all files
Sep 3, 20264 Insider tradeSep 1, 2026 all files
Aug 12, 20263 New insiderAug 3, 2026 all files
Aug 6, 2026SCHEDULE 13G/A 5%+ owner (passive), amended all files
Aug 5, 20264 Insider tradeAug 3, 2026 all files
Aug 4, 2026144 Notice of planned insider sale all files
Aug 3, 2026144 Notice of planned insider sale all files
Jul 29, 202610-Q Quarterly reportJun 30, 2026 all files · tables
Jul 29, 20268-K Quarterly resultsJul 29, 2026 all files
Jul 1, 20268-K Quarterly resultsJul 1, 2026 all files
Jun 11, 20264 Insider tradeJun 9, 2026 all files
Jun 11, 20264 Insider tradeJun 9, 2026 all files
Jun 11, 20264 Insider tradeJun 9, 2026 all files
Jun 11, 20264 Insider tradeJun 9, 2026 all files
Jun 11, 20264 Insider tradeJun 9, 2026 all files
Jun 11, 20264 Insider tradeJun 9, 2026 all files
Jun 11, 20264 Insider tradeJun 9, 2026 all files
Jun 11, 20264 Insider tradeJun 9, 2026 all files
Jun 11, 20264 Insider tradeJun 9, 2026 all files
Jun 10, 20268-K Shareholder vote resultsJun 9, 2026 all files
Jun 10, 20268-K/A Current report (amended)May 14, 2026 all files
Jun 5, 2026SCHEDULE 13G/A 5%+ owner (passive), amended all files
May 14, 20268-K Material agreement signed, Acquisition or sale of assets completed, New debt or obligation, Regulation FD disclosureMay 14, 2026 all files
May 14, 2026SC TO-T/A all files
May 14, 2026SCHEDULE 13D/A 5%+ owner (active), amended all files
May 12, 2026SC TO-T/A all files
May 6, 2026SC TO-T/A all files
May 6, 2026SCHEDULE 13G/A 5%+ owner (passive), amended all files
May 5, 20264 Insider tradeMay 1, 2026 all files
Apr 29, 2026SCHEDULE 13G 5%+ owner (passive) all files
Apr 29, 202610-Q Quarterly reportMar 31, 2026 all files · tables
Apr 29, 20268-K Quarterly resultsApr 29, 2026 all files
Apr 28, 2026ARS Annual report to shareholdersDec 31, 2025 all files
Apr 28, 2026DEFA14A Extra proxy material all files
Apr 28, 2026DEF 14A Proxy statementJun 9, 2026 all files
Apr 14, 2026SC TO-T all files
Apr 7, 2026SC TO-C all files
Apr 6, 20263 New insiderMar 31, 2026 all files
Apr 6, 2026SCHEDULE 13D 5%+ owner (active) all files
Apr 6, 20268-K Quarterly resultsApr 6, 2026 all files
Apr 3, 2026SC TO-C all files
Apr 3, 20264 Insider tradeApr 1, 2026 all files
Mar 31, 2026SC TO-C all files
Mar 31, 20268-K Material agreement signed, Other eventsMar 31, 2026 all files
Mar 31, 2026SC TO-C all files
Mar 26, 2026SCHEDULE 13G/A 5%+ owner (passive), amended all files
Mar 11, 20268-K Director or officer changeMar 11, 2026 all files
Feb 17, 20264 Insider tradeFeb 13, 2026 all files
Feb 17, 20264 Insider tradeFeb 13, 2026 all files
Feb 17, 20264 Insider tradeFeb 12, 2026 all files
Feb 17, 20264 Insider tradeFeb 13, 2026 all files
Feb 17, 20264 Insider tradeFeb 13, 2026 all files
Feb 17, 20264 Insider tradeFeb 13, 2026 all files
Feb 17, 20264 Insider tradeFeb 13, 2026 all files
Feb 17, 20264 Insider tradeFeb 13, 2026 all files
Feb 17, 20264 Insider tradeFeb 13, 2026 all files
Feb 17, 20264 Insider tradeFeb 13, 2026 all files
Feb 11, 20268-K Director or officer change, Other eventsFeb 11, 2026 all files
Feb 10, 20264 Insider tradeFeb 6, 2026 all files
Feb 10, 20264 Insider tradeFeb 6, 2026 all files
Feb 10, 20264 Insider tradeFeb 6, 2026 all files
Feb 10, 20264 Insider tradeFeb 6, 2026 all files
Feb 10, 20264 Insider tradeFeb 6, 2026 all files
Feb 10, 20264 Insider tradeFeb 6, 2026 all files
Feb 10, 20264 Insider tradeFeb 6, 2026 all files
Feb 10, 20264 Insider tradeFeb 6, 2026 all files
Feb 10, 20264 Insider tradeFeb 6, 2026 all files
Feb 10, 20264 Insider tradeFeb 6, 2026 all files
Feb 9, 2026144 Notice of planned insider sale all files
Feb 6, 202610-K Annual reportDec 31, 2025 all files · tables
Feb 6, 20268-K Quarterly resultsFeb 6, 2026 all files
Feb 5, 2026SCHEDULE 13G 5%+ owner (passive) all files
Feb 3, 20264 Insider tradeJan 30, 2026 all files
Feb 2, 2026144 Notice of planned insider sale all files
Jan 14, 20268-K Quarterly resultsJan 13, 2026 all files
Dec 3, 20254 Insider tradeDec 1, 2025 all files
Nov 13, 2025SCHEDULE 13G/A 5%+ owner (passive), amended all files
Nov 4, 20254 Insider tradeOct 31, 2025 all files
Oct 30, 202510-Q Quarterly reportSep 30, 2025 all files · tables
Oct 30, 20258-K Quarterly resultsOct 30, 2025 all files
Oct 14, 20258-K Quarterly resultsOct 14, 2025 all files
Oct 6, 20254 Insider tradeOct 2, 2025 all files
Sep 2, 2025144 Notice of planned insider sale all files
Sep 2, 20254 Insider tradeAug 29, 2025 all files
Jul 31, 20258-K Quarterly resultsJul 31, 2025 all files
Jul 31, 202510-Q Quarterly reportJun 30, 2025 all files · tables
Jul 30, 2025SCHEDULE 13D/A 5%+ owner (active), amended all files
Jul 21, 2025SCHEDULE 13D/A 5%+ owner (active), amended all files
Jul 16, 20254 Insider tradeJul 8, 2025 all files
Jul 8, 2025144 Notice of planned insider sale all files
Jul 7, 20258-K Quarterly resultsJul 7, 2025 all files
Jun 23, 20258-K Shareholder vote resultsJun 17, 2025 all files
Jun 18, 20254 Insider tradeJun 17, 2025 all files
Jun 18, 20254 Insider tradeJun 17, 2025 all files
Jun 18, 20254 Insider tradeJun 17, 2025 all files
Jun 18, 20254 Insider tradeJun 17, 2025 all files
Jun 18, 20254 Insider tradeJun 17, 2025 all files
Show the other 75 filings on this page

Press releases with quarterly results are attached to the 8-Ks marked "Quarterly results"; read them on Earnings releases.

Next Earnings releases →