---
schema_version: "secwatch.filing_event.v1"
accession: "0001193125-26-361109"
form_type: "8-K"
ticker: "CBT"
cik: "0000016040"
company_name: "CABOT CORP"
filed_at: "2026-08-21T20:12:35+00:00"
generated_at: "2026-08-21T20:14:08.451311+00:00"
event_type: "debt"
sentiment: "neutral"
materiality_score: 0.45
calibrated_materiality_score: 0.45
confidence: "high"
source: SEC EDGAR
---

# Cabot issues $350M of 4.950% senior notes due 2029

## Summary
- Completed issuance of $350M aggregate principal of 4.950% senior notes due 2029.
- Net proceeds to redeem $250M of 3.40% senior notes due September 2026.
- Remainder for working capital and general corporate purposes, incl. repayment of commercial paper or revolving credit.
- Notes issued under Second Supplemental Indenture dated Aug 21, 2026; U.S. Bank Trust is trustee.
- Offering registered on shelf Form S-3ASR (Reg. No. 333-276078); legal opinion by Ropes & Gray.

## SEC filing metadata
- accession: 0001193125-26-361109
- form_type: 8-K
- ticker: CBT
- cik: 0000016040
- company_name: CABOT CORP
- filed_at: 2026-08-21T20:12:35+00:00
- event_type: debt
- sentiment: neutral
- materiality_score: 0.45
- calibrated_materiality_score: 0.45
- confidence: high
- sec_items: 8.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/16040/000119312526361109/0001193125-26-361109-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/16040/000119312526361109/d328380d8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001193125-26-361109
- JSON: https://secwatch.observer/filing/0001193125-26-361109.json
- Plain text: https://secwatch.observer/filing/0001193125-26-361109.txt

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