---
schema_version: "secwatch.filing_event.v1"
accession: "0000022606-24-000009"
form_type: "8-K"
ticker: null
cik: "0000022606"
company_name: "COMMONWEALTH EDISON Co"
filed_at: "2024-05-13T23:59:59+00:00"
generated_at: "2026-06-02T02:52:22.199213+00:00"
event_type: "debt"
sentiment: "neutral"
materiality_score: 0.5
calibrated_materiality_score: 0.5
confidence: "high"
source: SEC EDGAR
---

# ComEd issues $800M in first mortgage bonds at 5.300% and 5.650%

## Summary
- $400M Series 136 at 5.300% due June 1, 2034; $400M Series 137 at 5.650% due June 1, 2054.
- Proceeds to redeem $250M of 3.10% Series 117 bonds, repay $400M term loan, commercial paper, and general corporate purposes.
- Bonds secured by first mortgage on ComEd's utility plant; interest payable semi-annually starting Dec 1, 2024.
- Underwriters include Goldman Sachs, U.S. Bancorp, Wells Fargo; Mizuho and SMBC affiliates are lenders in term loan being repaid.

## SEC filing metadata
- accession: 0000022606-24-000009
- form_type: 8-K
- cik: 0000022606
- company_name: COMMONWEALTH EDISON Co
- filed_at: 2024-05-13T23:59:59+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/22606/000002260624000009/0000022606-24-000009-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/22606/000002260624000009/exc-20240513.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0000022606-24-000009
- JSON: https://secwatch.observer/filing/0000022606-24-000009.json
- Plain text: https://secwatch.observer/filing/0000022606-24-000009.txt

## Key facts
- Debt Financings
  COMMONWEALTH EDISON Co incurred senior notes of $400 million aggregate principal amount of its First Mortgage 5.300% Bonds, Series 136, due June 1, 2034 with Goldman Sachs & Co. LLC, U.S. Bancorp Investments, Inc. and Wells Fargo Securities, LLC, as representatives of the several underwriters at 5.300% per annum maturing June 1, 2034.
  - Instrument: senior notes
  - Principal: $400 million aggregate principal amount of its First Mortgage 5.300% Bonds, Series 136, due June 1, 2034
  - Counterparty: Goldman Sachs & Co. LLC, U.S. Bancorp Investments, Inc. and Wells Fargo Securities, LLC, as representatives of the several underwriters
  - Rate: 5.300% per annum
  - Maturity: June 1, 2034
  - Event: incurrence
  source text: On May 13, 2024, ComEd issued $400 million aggregate principal amount of its First Mortgage 5.300% Bonds, Series 136, due June 1, 2034
  evidence_url: https://www.sec.gov/Archives/edgar/data/22606/000002260624000009/0000022606-24-000009-index.htm
- Debt Financings
  COMMONWEALTH EDISON Co incurred senior notes of $400 million aggregate principal amount of its First Mortgage 5.300% Bonds, Series 136, due June 1, 2034, and $400 milli with Goldman Sachs & Co. LLC, U.S. Bancorp Investments, Inc. and Wells Fargo Securities, LLC, as representatives of the several underwriters at 5.300% per annum for Series 136 Bonds, 5.650% per annum for Series 137 Bonds maturing Series 136: June 1, 2034; Series 137: June 1, 2054.
  - Instrument: senior notes
  - Principal: $400 million aggregate principal amount of its First Mortgage 5.300% Bonds, Series 136, due June 1, 2034, and $400 milli
  - Counterparty: Goldman Sachs & Co. LLC, U.S. Bancorp Investments, Inc. and Wells Fargo Securities, LLC, as representatives of the several underwriters
  - Rate: 5.300% per annum for Series 136 Bonds, 5.650% per annum for Series 137 Bonds
  - Maturity: Series 136: June 1, 2034; Series 137: June 1, 2054
  - Event: incurrence
  source text: On May 13, 2024, ComEd issued $400 million aggregate principal amount of its First Mortgage 5.300% Bonds, Series 136, due June 1, 2034, and $400 million aggregate principal amount of its First Mortgage 5.650% Bonds, Series 137, due June 1, 2054.
  evidence_url: https://www.sec.gov/Archives/edgar/data/22606/000002260624000009/0000022606-24-000009-index.htm

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