---
schema_version: "secwatch.filing_event.v1"
accession: "0001104659-26-074266"
form_type: "8-K"
ticker: "HUN"
cik: "0001307954"
company_name: "Huntsman CORP"
filed_at: "2026-06-16T10:26:28+00:00"
generated_at: "2026-06-16T10:30:10.515280+00:00"
event_type: "m_and_a"
sentiment: "positive"
materiality_score: 0.95
calibrated_materiality_score: 0.95
confidence: "high"
source: SEC EDGAR
---

# Huntsman and Olin announce $12.5B all-stock merger of equals; Ken Lane CEO, Peter Huntsman Chairman

## Summary
- Exchange ratio: 0.5476 Olin shares per Huntsman share; Olin shareholders own 54.5% of combined company.
- Identified >$400M cost synergies and integration benefits, plus $125M cash tax benefits from NOL acceleration.
- Ken Lane (Olin CEO) to lead combined company; Peter Huntsman non-executive Chairman; Phil Lister CFO.
- Combined company named OlinHuntsman, headquartered in The Woodlands, Texas; expected close H1 2027.
- 2025 pro forma revenue ~$12.5B; complementary upstream/downstream integration across chemicals value chain.

## SEC filing metadata
- accession: 0001104659-26-074266
- form_type: 8-K
- ticker: HUN
- cik: 0001307954
- company_name: Huntsman CORP
- filed_at: 2026-06-16T10:26:28+00:00
- event_type: m_and_a
- sentiment: positive
- materiality_score: 0.95
- calibrated_materiality_score: 0.95
- confidence: high
- sec_items: 7.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1307954/000110465926074266/0001104659-26-074266-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1307954/000110465926074266/tm2618028d2_8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001104659-26-074266
- JSON: https://secwatch.observer/filing/0001104659-26-074266.json
- Plain text: https://secwatch.observer/filing/0001104659-26-074266.txt

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