---
schema_version: "secwatch.filing_event.v1"
accession: "0001193125-21-354132"
form_type: "8-K"
ticker: "MRK"
cik: "0000310158"
company_name: "Merck & Co., Inc."
filed_at: "2021-12-10T23:59:59+00:00"
generated_at: "2026-06-28T02:12:41.134586+00:00"
event_type: "debt"
sentiment: "neutral"
materiality_score: 0.5
calibrated_materiality_score: 0.5
confidence: "high"
source: SEC EDGAR
---

# Merck raises $8.0B via multi-tranche note offering (1.700%-2.900% maturities 2027-2061)

## Summary
- On Dec 10, 2021, closed underwritten public offering of $8.0B aggregate principal amount of senior notes.
- Tranches: $1.5B 1.700% notes due 2027, $1.0B 1.900% notes due 2028, $2.0B 2.150% notes due 2031.
- Also $2.0B 2.750% notes due 2051 and $1.5B 2.900% notes due 2061.
- Notes issued under indenture dated Jan 6, 2010 with U.S. Bank Trust National Association as trustee.

## SEC filing metadata
- accession: 0001193125-21-354132
- form_type: 8-K
- ticker: MRK
- cik: 0000310158
- company_name: Merck & Co., Inc.
- filed_at: 2021-12-10T23:59:59+00:00
- event_type: debt
- sentiment: neutral
- materiality_score: 0.5
- calibrated_materiality_score: 0.5
- confidence: high
- sec_items: 8.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/310158/000119312521354132/0001193125-21-354132-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/310158/000119312521354132/d124536d8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001193125-21-354132
- JSON: https://secwatch.observer/filing/0001193125-21-354132.json
- Plain text: https://secwatch.observer/filing/0001193125-21-354132.txt

This AI-assisted summary is a reading aid. Review the linked SEC EDGAR filing before relying on any specific claim.