---
schema_version: "secwatch.filing_event.v1"
accession: "0000092122-23-000048"
form_type: "8-K"
ticker: "SO"
cik: "0000092122"
company_name: "SOUTHERN CO"
filed_at: "2023-05-18T23:59:59+00:00"
generated_at: "2026-06-14T22:00:55.508865+00:00"
event_type: "debt"
sentiment: "neutral"
materiality_score: 0.55
calibrated_materiality_score: 0.55
confidence: "high"
source: SEC EDGAR
---

# Southern Company issues $1.5B of senior notes in two tranches

## Summary
- Issued $750M of 4.85% Series 2023B Senior Notes due June 15, 2028.
- Issued $750M of 5.20% Series 2023C Senior Notes due June 15, 2033.
- Notes sold under existing shelf registration (No. 333-253286); underwriting agreements dated May 15, 2023.
- Proceeds used for general corporate purposes.

## SEC filing metadata
- accession: 0000092122-23-000048
- form_type: 8-K
- ticker: SO
- cik: 0000092122
- company_name: SOUTHERN CO
- filed_at: 2023-05-18T23:59:59+00:00
- event_type: debt
- sentiment: neutral
- materiality_score: 0.55
- calibrated_materiality_score: 0.55
- confidence: high
- sec_items: 8.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/92122/000009212223000048/0000092122-23-000048-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/92122/000009212223000048/so-20230515.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0000092122-23-000048
- JSON: https://secwatch.observer/filing/0000092122-23-000048.json
- Plain text: https://secwatch.observer/filing/0000092122-23-000048.txt

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