Westlake prices $1.2 billion senior notes offering due 2035 and 2055
Westlake Corporation agreed to sell $600 million of 5.550% senior notes due 2035 and $600 million of 6.375% senior notes due 2055, with closing expected November 6, 2025. The company expects net proceeds of about $1.185 billion, which it plans to use mainly to repurchase its $750 million of 3.600% senior notes due 2026, with any remainder going to the pending ACI Acquisition and general corporate purposes.
Key points
- Two tranches total $1.2 billion: $600 million of 5.550% notes due November 15, 2035 and $600 million of 6.375% notes due November 15, 2055
- Expected net proceeds of approximately $1.185 billion before offering expenses
- Proceeds intended first to fund a concurrent tender offer for the $750 million of 3.600% senior notes due 2026 outstanding as of September 30, 2025
- Remaining proceeds may fund the pending ACI/Perplastic Group compounding solutions acquisition and general corporate purposes
The filing
Written by AI on Nov 8, 2026, 1:17 AM ET, from this filing only. Written later: this filing was briefed after the fact, when past filings were added to the site, so the brief may be read with hindsight; the filing itself is the record of what was known on November 05, 2025.
Briefs are written by AI from the filing text and can contain mistakes — open the filing before acting on anything. Impact (1-5) and tone are the AI's reading of the filing for shareholders, not a price forecast. Not investment advice.