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Biogen BIIB

All filings · 22 filings with the SEC in the last year

July 2026

  1. Jul 2910-Qfiled its quarterly reportSEC ↗
  2. Jul 298-Kreported quarterly resultsSEC ↗
  3. Jul 018-Kreported quarterly resultsSEC ↗

May 2026

  1. May 14SCHEDULE 13D/A/AActivist stakesdisclosed an activist stakeSEC ↗
  2. May 148-KDeals & acquisitionsentered a material agreementSEC ↗
  3. May 14SC TO-T/A/ADeals & acquisitionsreceived a tender offerSEC ↗
  4. May 12SC TO-T/A/ADeals & acquisitionsreceived a tender offerSEC ↗
  5. May 06SC TO-T/A/ADeals & acquisitionsreceived a tender offerSEC ↗

April 2026

  1. Apr 2910-Qfiled its quarterly reportSEC ↗
  2. Apr 298-Kreported quarterly resultsSEC ↗
  3. Apr 14SC TO-TDeals & acquisitionsreceived a tender offerSEC ↗
  4. Apr 06SCHEDULE 13DActivist stakesdisclosed an activist stakeSEC ↗
  5. Apr 068-Kreported quarterly resultsSEC ↗

March 2026

  1. Mar 318-KDeals & acquisitionsentered a material agreementSEC ↗
  2. Mar 118-KExecutive changesannounced an executive or director changeSEC ↗

February 2026

  1. Feb 118-KExecutive changesannounced an executive or director changeSEC ↗
  2. Feb 0610-Kfiled its annual reportSEC ↗
  3. Feb 068-Kreported quarterly resultsSEC ↗

January 2026

  1. Jan 148-Kreported quarterly resultsSEC ↗

October 2025

  1. Oct 3010-Qfiled its quarterly reportSEC ↗
  2. Oct 308-Kreported quarterly resultsSEC ↗
  3. Oct 148-Kreported quarterly resultsSEC ↗