---
schema_version: "secwatch.filing_event.v1"
accession: "0001104659-25-105673"
form_type: "8-K"
ticker: "SON"
cik: "0000091767"
company_name: "SONOCO PRODUCTS CO"
filed_at: "2025-11-03T23:59:59+00:00"
generated_at: "2026-05-17T01:02:17.443745+00:00"
event_type: "m_and_a"
sentiment: "positive"
materiality_score: 0.75
calibrated_materiality_score: 0.75
confidence: "high"
source: SEC EDGAR
---

# Sonoco completes sale of ThermoSafe to Arsenal for up to $725M

## Summary
- Total purchase price up to $725M: $650M at closing (cash-free, debt-free) plus up to $75M in 2025 performance-based consideration.
- Net proceeds from the divestiture will be used to repay existing debt.
- Proforma net leverage ratio projected at ~3.4x (excluding additional consideration).
- Sale concludes Sonoco's portfolio transformation into two core segments focused on metal and paper consumer/industrial packaging.
- Transaction closed on November 3, 2025; financial advisor was Morgan Stanley & Co. LLC.

## SEC filing metadata
- accession: 0001104659-25-105673
- form_type: 8-K
- ticker: SON
- cik: 0000091767
- company_name: SONOCO PRODUCTS CO
- filed_at: 2025-11-03T23:59:59+00:00
- event_type: m_and_a
- sentiment: positive
- materiality_score: 0.75
- calibrated_materiality_score: 0.75
- confidence: high
- sec_items: 7.01, 8.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/91767/000110465925105673/0001104659-25-105673-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/91767/000110465925105673/tm2529995d1_8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001104659-25-105673
- JSON: https://secwatch.observer/filing/0001104659-25-105673.json
- Plain text: https://secwatch.observer/filing/0001104659-25-105673.txt

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