---
schema_version: "secwatch.filing_event.v1"
accession: "0001193125-23-040753"
form_type: "8-K"
ticker: "AMGN"
cik: "0000318154"
company_name: "AMGEN INC"
filed_at: "2023-02-16T23:59:59+00:00"
generated_at: "2026-06-19T09:49:23.151430+00:00"
event_type: "debt"
sentiment: "neutral"
materiality_score: 0.8
calibrated_materiality_score: 0.8
confidence: "high"
source: SEC EDGAR
---

# Amgen issues $24B of senior notes across eight tranches from 2025 to 2063

## Summary
- $2B of 5.250% notes due 2025, $1.5B of 5.507% notes due 2026, $3.75B of 5.150% notes due 2028.
- $2.75B of 5.250% notes due 2030, $4.25B of 5.250% notes due 2033, $2.75B of 5.600% notes due 2043.
- $4.25B of 5.650% notes due 2053, $2.75B of 5.750% notes due 2063; total $24B aggregate principal.
- Notes rank equal with other senior unsecured debt; closing expected March 2, 2023.

## SEC filing metadata
- accession: 0001193125-23-040753
- form_type: 8-K
- ticker: AMGN
- cik: 0000318154
- company_name: AMGEN INC
- filed_at: 2023-02-16T23:59:59+00:00
- event_type: debt
- sentiment: neutral
- materiality_score: 0.8
- calibrated_materiality_score: 0.8
- confidence: high
- sec_items: 1.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/318154/000119312523040753/0001193125-23-040753-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/318154/000119312523040753/d424593d8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001193125-23-040753
- JSON: https://secwatch.observer/filing/0001193125-23-040753.json
- Plain text: https://secwatch.observer/filing/0001193125-23-040753.txt

## Key facts
- Material Agreements
  AMGEN INC entered into Underwriting Agreement with Citigroup Global Markets Inc., BofA Securities, Inc., Goldman Sachs & Co. LLC and Mizuho Securities USA LLC, as representatives of the several underwriters valued at $2,000,000,000 aggregate principal amount of the Company’s 5.250% Senior Notes due 2025, $1,500,000, (effective 2023-02-15).
  - Action: entry
  - Agreement: underwriting
  - Counterparty: Citigroup Global Markets Inc., BofA Securities, Inc., Goldman Sachs & Co. LLC and Mizuho Securities USA LLC, as representatives of the several underwriters
  - Value: $2,000,000,000 aggregate principal amount of the Company’s 5.250% Senior Notes due 2025, $1,500,000,
  - Effective: 2023-02-15
  source text: On February 15, 2023, Amgen Inc. (the “Company”) entered into an underwriting agreement (the “Underwriting Agreement”) with Citigroup Global Markets Inc., BofA Securities, Inc., Goldman Sachs & Co. LLC and Mizuho Securities USA LLC, as representatives of the several underwriters named therein (the “Underwriters”), to issue and sell to the Underwriters $2,000,000,000 aggregate principal amount of the Company’s 5.250% Senior Notes due 2025 (the “2025 Notes”), $1,500,000,000 aggregate principal amount of the Company’s 5.507% Senior Notes due 2026 (the “2026 Notes”), $3,750,000,000 aggregate principal amount of the Company’s 5.150% Senior Notes due 2028 (the “2028 Notes”), $2,750,000,000 aggregate principal amount of the Company’s 5.250% Senior Notes due 2030 (the “2030 Notes”), $4,250,000,000 aggregate principal amount of the Company’s 5.250% Senior Notes due 2033 (the “2033 Notes”), $2,750,000,000 aggregate principal amount of the Company’s 5.600% Senior Notes due 2043 (the “2043 Notes”)
  evidence_url: https://www.sec.gov/Archives/edgar/data/318154/000119312523040753/0001193125-23-040753-index.htm

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