---
schema_version: "secwatch.filing_event.v1"
accession: "0000022606-25-000013"
form_type: "8-K"
ticker: null
cik: "0000022606"
company_name: "COMMONWEALTH EDISON Co"
filed_at: "2025-05-19T23:59:59+00:00"
generated_at: "2026-05-21T02:17:03.716957+00:00"
event_type: "debt"
sentiment: "neutral"
materiality_score: 0.5
calibrated_materiality_score: 0.5
confidence: "high"
source: SEC EDGAR
---

# ComEd issues $725M of 5.950% First Mortgage Bonds due 2055

## Summary
- $725M aggregate principal of First Mortgage 5.950% Bonds, Series 138, due June 1, 2055.
- Proceeds to repay outstanding commercial paper and fund general corporate purposes.
- Interest payable semi-annually on June 1 and December 1, starting December 1, 2025.
- Bonds redeemable at ComEd's option; make-whole prior to Dec 1, 2054, then at par.
- Issued under ComEd's 1923 Mortgage as supplemented; secured by first mortgage on utility plant.

## SEC filing metadata
- accession: 0000022606-25-000013
- form_type: 8-K
- cik: 0000022606
- company_name: COMMONWEALTH EDISON Co
- filed_at: 2025-05-19T23:59:59+00:00
- event_type: debt
- sentiment: neutral
- materiality_score: 0.5
- calibrated_materiality_score: 0.5
- confidence: high
- sec_items: 1.01, 2.03, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/22606/000002260625000013/0000022606-25-000013-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/22606/000002260625000013/exc-20250519.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0000022606-25-000013
- JSON: https://secwatch.observer/filing/0000022606-25-000013.json
- Plain text: https://secwatch.observer/filing/0000022606-25-000013.txt

## Key facts
- Debt Financings
  COMMONWEALTH EDISON Co incurred senior notes of $725 million aggregate principal amount with underwriters (BofA Securities, Inc., BNP Paribas Securities Corp., MUFG Securities Americas Inc., SMBC Nikko Securities America, Inc., as representatives) at 5.950% per annum maturing June 1, 2055.
  - Instrument: senior notes
  - Principal: $725 million aggregate principal amount
  - Counterparty: underwriters (BofA Securities, Inc., BNP Paribas Securities Corp., MUFG Securities Americas Inc., SMBC Nikko Securities America, Inc., as representatives)
  - Rate: 5.950% per annum
  - Maturity: June 1, 2055
  - Event: incurrence
  source text: On May 19, 2025, ComEd issued $725 million aggregate principal amount of its First Mortgage 5.950% Bonds, Series 138, due June 1, 2055.
  evidence_url: https://www.sec.gov/Archives/edgar/data/22606/000002260625000013/0000022606-25-000013-index.htm

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