secwatch.observer — SEC 8-K summary
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Issuer:     BIOGEN INC. (BIIB)
CIK:        0000875045
Form:       8-K
Filed at:   2025-05-12T23:59:59+00:00
Accession:  0001193125-25-117854
Event type: debt
Sentiment:  neutral
Materiality: 0.55
Item codes: 8.01, 9.01
LLM model:  deepseek-v4-flash:cloud@v2

Biogen issues $1.75B in three tranches of senior notes to refinance maturing 2025 debt
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- $400M 5.050% notes due 2031, $650M 5.750% notes due 2035, $700M 6.450% notes due 2055.
- Net proceeds, with cash on hand, will retire the outstanding $1.75B 4.050% Senior Notes due 2025.
- Notes are senior unsecured; redeemable at par plus make-whole; 101% change-of-control put.
- Underwriters: BofA Securities, Citigroup Global Markets, J.P. Morgan Securities.

Source:
  EDGAR index:    https://www.sec.gov/Archives/edgar/data/875045/000119312525117854/0001193125-25-117854-index.htm
  Primary doc:    https://www.sec.gov/Archives/edgar/data/875045/000119312525117854/d13940d8k.htm
  HTML page:      https://secwatch.observer/filing/0001193125-25-117854

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