# EDGAR Filing Document

**Accession Number:** 0000022606
**File Stem:** 0001104659-26-057248
**Filing Date:** 2026-5
**Character Count:** 8411
**Document Hash:** dbdd78ec31abc02143170c9f08ca81b6
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001104659-26-057248.hdr.sgml**: 20260507

**ACCESSION NUMBER**: 0001104659-26-057248

**CONFORMED SUBMISSION TYPE**: FWP

**PUBLIC DOCUMENT COUNT**: 1

**FILED AS OF DATE**: 20260507

**DATE AS OF CHANGE**: 20260507

**SUBJECT COMPANY**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** COMMONWEALTH EDISON Co
- **CENTRAL INDEX KEY:** 0000022606
- **STANDARD INDUSTRIAL CLASSIFICATION:** ELECTRIC SERVICES [4911]
- **ORGANIZATION NAME:** 01 Energy & Transportation
- **EIN:** 360938600
- **STATE OF INCORPORATION:** IL
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** FWP
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 333-284911-01
- **FILM NUMBER:** 26954554

**BUSINESS ADDRESS:**
- **STREET 1:** 10 S. DEARBORN STREET
- **CITY:** CHICAGO
- **STATE:** IL
- **ZIP:** 60603-2300
- **BUSINESS PHONE:** 3123944321

**MAIL ADDRESS:**
- **STREET 1:** 10 S. DEARBORN STREET
- **CITY:** CHICAGO
- **STATE:** IL
- **ZIP:** 60603-2300

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** COMMONWEALTH EDISON CO
- **DATE OF NAME CHANGE:** 19920703
**FILED BY**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** COMMONWEALTH EDISON Co
- **CENTRAL INDEX KEY:** 0000022606
- **STANDARD INDUSTRIAL CLASSIFICATION:** ELECTRIC SERVICES [4911]
- **ORGANIZATION NAME:** 01 Energy & Transportation
- **EIN:** 360938600
- **STATE OF INCORPORATION:** IL
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** FWP

**BUSINESS ADDRESS:**
- **STREET 1:** 10 S. DEARBORN STREET
- **CITY:** CHICAGO
- **STATE:** IL
- **ZIP:** 60603-2300
- **BUSINESS PHONE:** 3123944321

**MAIL ADDRESS:**
- **STREET 1:** 10 S. DEARBORN STREET
- **CITY:** CHICAGO
- **STATE:** IL
- **ZIP:** 60603-2300

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** COMMONWEALTH EDISON CO
- **DATE OF NAME CHANGE:** 19920703

**Filed pursuant to Rule 433**

**Registration Statement No. 333-284911-01**

**Dated: May 7, 2026**

**Commonwealth Edison Company**

First Mortgage 4.550% Bonds, Series 139, due 2031

First Mortgage 5.850% Bonds, Series 140, due 2056

**May 7, 2026**

**<u>Pricing Term Sheet</u>**

---

| | | |
|:---|:---|:---|
| Issuer: | Commonwealth Edison Company |  |
| Ratings\*: | A1 (Moody's); A (S&P) |  |
| Trade Date: | May 7, 2026 |  |
| Settlement Date\*\*: | May 14, 2026 (T+5) |  |
| Securities: | First Mortgage 4.550% Bonds, Series 139, due 2031 | First Mortgage 5.850% Bonds, Series 140, due 2056 |
| Principal Amount: | $600000000 | $825000000 |
| Maturity Date: | June 1, 2031 | June 1, 2056 |
| Coupon: | 4.550% | 5.850% |
| Benchmark Treasury: | 3.875% due April 30, 2031 | 4.625% due November 15, 2055 |
| Benchmark Treasury Price / Yield: | 99-07 ¼ / 4.048% | 94-18+ / 4.977% |
| Spread to Benchmark Treasury: | +55 basis points | +88 basis points |
| Yield to Maturity: | 4.598% | 5.857% |
| Public Offering Price: | 99.783% of the principal amount | 99.897% of the principal amount |
| Interest Payment Dates: | June 1 and December 1 of each year, commencing December 1, 2026 | June 1 and December 1 of each year, commencing December 1, 2026 |
| Optional Redemption Provisions: | At any time prior to May 1, 2031 (one month prior to the maturity date) (the "Series 139 Par Call Date"), the Company may, at its option, redeem the Series 139 Purchase Bonds in whole or in part at a redemption price equal to the greater of: (1)(a) the sum of the present values of the remaining scheduled payments of principal and interest thereon discounted to the redemption date (assuming the Series 139 Purchased Bonds matured on the Series 139 Par Call Date) on a semi-annual basis (assuming a 360-day year consisting of twelve 30-day months) at the Treasury Rate plus 10 basis points less (b) interest accrued to the date of redemption, and (2) 100% of the principal amount of the Series 139 Purchased Bonds to be redeemed, plus, in either case, accrued and unpaid interest thereon to, but excluding, the redemption date. | At any time prior to December 1, 2055 (six months prior to the maturity date) (the "Series 140 Par Call Date"), the Company may, at its option, redeem the Series 140 Purchased Bonds in whole or in part at a redemption price equal to the greater of: (1)(a) the sum of the present values of the remaining scheduled payments of principal and interest thereon discounted to the redemption date (assuming the Series 140 Purchased Bonds matured on the Series 140 Par Call Date) on a semi-annual basis (assuming a 360-day year consisting of twelve 30-day months) at the Treasury Rate plus 15 basis points less (b) interest accrued to the date of redemption, and (2) 100% of the principal amount of the Series 140 Purchased Bonds to be redeemed, plus, in either case, accrued and unpaid interest thereon to, but excluding, the redemption date. |

---

---

| | | |
|:---|:---|:---|
|  | On or after the Series 139 Par Call Date, the Company may, at its option, redeem the Series 139 Purchased Bonds in whole or in part at a redemption price equal to 100% of the principal amount of the Series 139 Purchased Bonds being redeemed, plus accrued and unpaid interest thereon to the redemption date. | On or after the Series 140 Par Call Date, the Company may, at its option, redeem the Series 140 Purchased Bonds in whole or in part at a redemption price equal to 100% of the principal amount of the Series 140 Purchased Bonds being redeemed, plus accrued and unpaid interest thereon to the redemption date. |
| CUSIP / ISIN: | 202795 KC 3 / US202795KC39 | 202795 KD 1 / US202795KD12 |
| Joint Book-Running Managers: | BofA Securities, Inc. <br> Citigroup Global Markets Inc.<br> Loop Capital Markets LLC<br> RBC Capital Markets, LLC<br> U.S. Bancorp Investments, Inc.<br> Credit Agricole Securities (USA) Inc.<br> MUFG Securities Americas Inc.<br> PNC Capital Markets LLC <br> SMBC Nikko Securities America, Inc. | BofA Securities, Inc. <br> Citigroup Global Markets Inc. <br> Loop Capital Markets LLC<br> RBC Capital Markets, LLC<br> U.S. Bancorp Investments, Inc.<br> Credit Agricole Securities (USA) Inc.<br> MUFG Securities Americas Inc.<br> PNC Capital Markets LLC <br> SMBC Nikko Securities America, Inc. |
| Senior Co-Managers: | BNY Mellon Capital Markets, LLC<br> Huntington Securities, Inc.<br> Siebert Williams Shank & Co., LLC | BNY Mellon Capital Markets, LLC<br> Huntington Securities, Inc.<br> Siebert Williams Shank & Co., LLC |
| Co-Managers: | AmeriVet Securities, Inc. <br> Penserra Securities LLC<br> R. Seelaus & Co., LLC<br> Stern Brothers & Co.<br> Telsey Advisory Group LLC<br> Independence Point Securities LLC | AmeriVet Securities, Inc. <br> Penserra Securities LLC <br> R. Seelaus & Co., LLC<br> Stern Brothers & Co. <br> Telsey Advisory Group LLC<br> Independence Point Securities LLC |

---

**\*Note:** A securities rating is not a recommendation to buy, sell or hold securities and may be subject to revision or withdrawal at any time.

**\*\*We expect to deliver the bonds on or about May 14, 2026, which will be the fifth business day following the date of this term sheet ("T+5"). Under Rule 15c6-1 under the Exchange Act, trades in the secondary market generally are required to settle in one business day, unless the parties to any such trade expressly agree otherwise. Accordingly, purchasers who wish to trade bonds on any day other than the business day preceding the settlement date will be required, by virtue of the fact that the bonds initially will settle in T+5, to specify an alternate settlement cycle at the time of any such trade to prevent failed settlement and should consult their own advisors.**

**The issuer has filed a registration statement (including a prospectus) with the SEC for the offering to which this communication relates. Before you invest, you should read the prospectus in that registration statement and other documents the issuer has filed with the SEC for more complete information about the issuer and this offering. You may get these documents for free by visiting EDGAR on the SEC Web site at www.sec.gov. Alternatively, the issuer, any underwriter or any dealer participating in the offering will arrange to send you the prospectus if you request it by calling BofA Securities, Inc. at 1-800-294-1322, Citigroup Global Markets Inc. at 1-800-831-9146, Loop Capital Markets LLC at 1-888-294-8898, RBC Capital Markets, LLC at 1-866-375-6829, and U.S. Bancorp Investments, Inc. at 1-877-558-2607.**