---
schema_version: "secwatch.filing_event.v1"
accession: "0001193125-23-149364"
form_type: "8-K"
ticker: "PFE"
cik: "0000078003"
company_name: "PFIZER INC"
filed_at: "2023-05-19T23:59:59+00:00"
generated_at: "2026-06-14T20:21:32.637519+00:00"
event_type: "m_and_a"
sentiment: "neutral"
materiality_score: 0.75
calibrated_materiality_score: 0.75
confidence: "high"
source: SEC EDGAR
---

# Pfizer completes $31B multi-tranche note offering to fund Seagen acquisition

## Summary
- Issued $31B aggregate principal across 8 tranches: 2025-2063 maturities, rates 4.45%-5.34%.
- Notes fully and unconditionally guaranteed by Pfizer on a senior unsecured basis.
- Special mandatory redemption at 101% if Seagen merger not consummated by Sep 19, 2024 or abandoned.
- Net proceeds to finance portion of Seagen deal consideration and related fees; proceeds of 2033/2053 notes for general corporate purposes if redemption triggered.
- Issued by wholly-owned Singapore subsidiary Pfizer Investment Enterprises Pte. Ltd.

## SEC filing metadata
- accession: 0001193125-23-149364
- form_type: 8-K
- ticker: PFE
- cik: 0000078003
- company_name: PFIZER INC
- filed_at: 2023-05-19T23:59:59+00:00
- event_type: m_and_a
- sentiment: neutral
- materiality_score: 0.75
- calibrated_materiality_score: 0.75
- confidence: high
- sec_items: 8.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/78003/000119312523149364/0001193125-23-149364-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/78003/000119312523149364/d414076d8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001193125-23-149364
- JSON: https://secwatch.observer/filing/0001193125-23-149364.json
- Plain text: https://secwatch.observer/filing/0001193125-23-149364.txt

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