---
schema_version: "secwatch.filing_event.v1"
accession: "0001193125-26-352348"
form_type: "8-K"
ticker: "CBT"
cik: "0000016040"
company_name: "CABOT CORP"
filed_at: "2026-08-14T20:22:19+00:00"
generated_at: "2026-08-14T20:29:23.200788+00:00"
event_type: "debt"
sentiment: "neutral"
materiality_score: 0.5
calibrated_materiality_score: 0.5
confidence: "high"
source: SEC EDGAR
---

# Cabot Corp announces $350M 4.950% notes due 2029 offering

## Summary
- $350M aggregate principal of 4.950% notes due 2029; closing expected on or about Aug 21, 2026.
- Underwriting agreement with Citigroup, J.P. Morgan, PNC Capital Markets, and U.S. Bancorp as representatives.
- Notes to be issued under base indenture with U.S. Bank Trust Company as trustee.
- Estimated offering expenses total $1.08M, including $48,332 SEC registration fee and $586,250 rating agency fees.
- Offering made under existing S-3ASR shelf registration (No. 333-276078) filed Dec 15, 2023.

## SEC filing metadata
- accession: 0001193125-26-352348
- form_type: 8-K
- ticker: CBT
- cik: 0000016040
- company_name: CABOT CORP
- filed_at: 2026-08-14T20:22:19+00:00
- event_type: debt
- sentiment: neutral
- materiality_score: 0.5
- calibrated_materiality_score: 0.5
- confidence: high
- sec_items: 8.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/16040/000119312526352348/0001193125-26-352348-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/16040/000119312526352348/d222203d8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001193125-26-352348
- JSON: https://secwatch.observer/filing/0001193125-26-352348.json
- Plain text: https://secwatch.observer/filing/0001193125-26-352348.txt

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