---
schema_version: "secwatch.filing_event.v1"
accession: "0001193125-25-267207"
form_type: "8-K"
ticker: "WLK"
cik: "0001262823"
company_name: "WESTLAKE CORP"
filed_at: "2025-11-05T23:59:59+00:00"
generated_at: "2026-05-17T00:11:55.362314+00:00"
event_type: "debt"
sentiment: "neutral"
materiality_score: 0.65
calibrated_materiality_score: 0.65
confidence: "high"
source: SEC EDGAR
---

# Westlake prices $1.2B senior notes offering to fund tender offer and ACI acquisition

## Summary
- $600M 5.550% notes due 2035 and $600M 6.375% notes due 2055 priced, expected to close Nov 6, 2025.
- Net proceeds ~$1.185B; part used to repurchase $750M of 3.600% senior notes due 2026 via cash tender offer.
- Remaining proceeds to fund ACI/Perplastic compounding solutions acquisition and general corporate purposes.
- Offering is not contingent on tender offer success or ACI acquisition closing.
- Underwriters: BofA, Deutsche Bank, J.P. Morgan, Wells Fargo.

## SEC filing metadata
- accession: 0001193125-25-267207
- form_type: 8-K
- ticker: WLK
- cik: 0001262823
- company_name: WESTLAKE CORP
- filed_at: 2025-11-05T23:59:59+00:00
- event_type: debt
- sentiment: neutral
- materiality_score: 0.65
- calibrated_materiality_score: 0.65
- confidence: high
- sec_items: 1.01, 7.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1262823/000119312525267207/0001193125-25-267207-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1262823/000119312525267207/d72149d8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001193125-25-267207
- JSON: https://secwatch.observer/filing/0001193125-25-267207.json
- Plain text: https://secwatch.observer/filing/0001193125-25-267207.txt

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