---
schema_version: "secwatch.filing_event.v1"
accession: "0000950103-25-013592"
form_type: "8-K"
ticker: "CSX"
cik: "0000277948"
company_name: "CSX CORP"
filed_at: "2025-10-23T23:59:59+00:00"
generated_at: "2026-05-17T02:35:47.913237+00:00"
event_type: "debt"
sentiment: "neutral"
materiality_score: 0.45
calibrated_materiality_score: 0.45
confidence: "high"
source: SEC EDGAR
---

# CSX completes $300M add-on offering of 5.050% Notes due 2035

## Summary
- $300M aggregate principal of 5.050% Notes due 2035 issued as a further issuance of existing series.
- Total outstanding principal on this series increases to $900M (initial $600M from March 2025).
- Notes rank equally with existing notes under the same indenture and mature in 2035.
- Offering made under shelf registration statement effective February 27, 2025.
- Proceeds expected for general corporate purposes; no specific use disclosed.

## SEC filing metadata
- accession: 0000950103-25-013592
- form_type: 8-K
- ticker: CSX
- cik: 0000277948
- company_name: CSX CORP
- filed_at: 2025-10-23T23:59:59+00:00
- event_type: debt
- sentiment: neutral
- materiality_score: 0.45
- calibrated_materiality_score: 0.45
- confidence: high
- sec_items: 2.03, 8.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/277948/000095010325013592/0000950103-25-013592-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/277948/000095010325013592/dp236260_8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0000950103-25-013592
- JSON: https://secwatch.observer/filing/0000950103-25-013592.json
- Plain text: https://secwatch.observer/filing/0000950103-25-013592.txt

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