---
schema_version: "secwatch.filing_event.v1"
accession: "0001193125-23-253470"
form_type: "8-K"
ticker: "ATO"
cik: "0000731802"
company_name: "ATMOS ENERGY CORP"
filed_at: "2023-10-10T23:59:59+00:00"
generated_at: "2026-06-10T03:00:27.480461+00:00"
event_type: "debt"
sentiment: "neutral"
materiality_score: 0.6
calibrated_materiality_score: 0.6
confidence: "high"
source: SEC EDGAR
---

# Atmos Energy issues $900M in senior notes: $400M at 5.900% due 2033, $500M at 6.200% due 2053

## Summary
- Net proceeds of ~$889.2M after underwriting discount and expenses.
- Notes are unsecured senior obligations ranking equally with existing unsubordinated debt.
- Interest payable semi-annually on May 15 and Nov 15 starting May 15, 2024.
- Notes redeemable at Atmos's option at any time per indenture terms.
- Covenants limit liens, sale-leaseback, mergers, and asset sales subject to exceptions.

## SEC filing metadata
- accession: 0001193125-23-253470
- form_type: 8-K
- ticker: ATO
- cik: 0000731802
- company_name: ATMOS ENERGY CORP
- filed_at: 2023-10-10T23:59:59+00:00
- event_type: debt
- sentiment: neutral
- materiality_score: 0.6
- calibrated_materiality_score: 0.6
- confidence: high
- sec_items: 1.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/731802/000119312523253470/0001193125-23-253470-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/731802/000119312523253470/d548681d8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001193125-23-253470
- JSON: https://secwatch.observer/filing/0001193125-23-253470.json
- Plain text: https://secwatch.observer/filing/0001193125-23-253470.txt

## Key facts
- Material Agreements
  ATMOS ENERGY CORP entered into Indenture with U.S. Bank Trust Company, National Association valued at $400 million aggregate principal amount of its 5.900% Senior Notes due 2033 and $500 million aggrega (effective 2023-10-10).
  - Action: entry
  - Agreement: notes offering
  - Counterparty: U.S. Bank Trust Company, National Association
  - Value: $400 million aggregate principal amount of its 5.900% Senior Notes due 2033 and $500 million aggrega
  - Effective: 2023-10-10
  source text: On October 10, 2023, Atmos Energy Corporation (“Atmos Energy”) completed a public offering of $400 million aggregate principal amount of its 5.900% Senior Notes due 2033 (the “2033 Notes”) and $500 million aggregate principal amount of its 6.200% Senior Notes due 2053 (the “2053 Notes” and, together with the 2033 Notes, the “Notes”).
  evidence_url: https://www.sec.gov/Archives/edgar/data/731802/000119312523253470/0001193125-23-253470-index.htm

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