secwatch.observer — SEC 8-K summary
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Issuer:     Merck & Co., Inc. (MRK)
CIK:        0000310158
Form:       8-K
Filed at:   2025-12-04T23:59:59+00:00
Accession:  0001628280-25-055388
Event type: debt
Sentiment:  neutral
Materiality: 0.65
Item codes: 8.01, 9.01
LLM model:  deepseek-v4-flash:cloud@v2

Merck closes $8.0B multi-tranche debt offering across eight series
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- Total $8.0B includes Floating Rate Notes due 2029 ($500M), 3.850% Notes due 2029 ($750M), 4.150% due 2031 ($1B), 4.450% due 2032 ($1B).
- Also $1.5B 4.750% Notes due 2035, $750M 5.500% due 2046, $1.5B 5.550% due 2055, and $1.0B 5.700% due 2065.
- Offering closed December 4, 2025 under existing shelf registration statement (333-278066).
- Proceeds not specified; notes are senior unsecured obligations issued under indenture dated Jan. 6, 2010.

Source:
  EDGAR index:    https://www.sec.gov/Archives/edgar/data/310158/000162828025055388/0001628280-25-055388-index.htm
  Primary doc:    https://www.sec.gov/Archives/edgar/data/310158/000162828025055388/mrk-20251204.htm
  HTML page:      https://secwatch.observer/filing/0001628280-25-055388

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