---
schema_version: "secwatch.filing_event.v1"
accession: "0001104659-25-111282"
form_type: "8-K"
ticker: "LYB"
cik: "0001489393"
company_name: "LyondellBasell Industries N.V."
filed_at: "2025-11-13T23:59:59+00:00"
generated_at: "2026-05-16T20:18:38.842944+00:00"
event_type: "debt"
sentiment: "neutral"
materiality_score: 0.6
calibrated_materiality_score: 0.6
confidence: "high"
source: SEC EDGAR
---

# LyondellBasell issues $1.5B in guaranteed notes: $500M at 5.125% due 2031, $1B at 5.875% due 2036

## Summary
- Issuer LYB International Finance III, LLC sold $500M 5.125% notes due 2031 and $1B 5.875% notes due 2036.
- Notes are fully and unconditionally guaranteed by LyondellBasell Industries N.V.
- Offering closed November 13, 2025; underwriters include Citigroup, Deutsche Bank, and J.P. Morgan.
- Proceeds not detailed; notes issued under existing base indenture and supplemental indenture.

## SEC filing metadata
- accession: 0001104659-25-111282
- form_type: 8-K
- ticker: LYB
- cik: 0001489393
- company_name: LyondellBasell Industries N.V.
- filed_at: 2025-11-13T23:59:59+00:00
- event_type: debt
- sentiment: neutral
- materiality_score: 0.6
- calibrated_materiality_score: 0.6
- confidence: high
- sec_items: 1.01, 2.03, 8.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1489393/000110465925111282/0001104659-25-111282-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1489393/000110465925111282/tm2530154d4_8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001104659-25-111282
- JSON: https://secwatch.observer/filing/0001104659-25-111282.json
- Plain text: https://secwatch.observer/filing/0001104659-25-111282.txt

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