SOCGP Southern California Gas Company (QB)

Free Writing Prospectus

Filed Pursuant to Rule 433

Registration Statement No. 333-270939

Southern California Gas Company

Final Term Sheet

August 8, 2024

5.050% First Mortgage Bonds, Series CCC, due 2034

This free writing prospectus relates only to the securities described below and should be read together with Southern California Gas Company’s preliminary prospectus supplement dated August 8, 2024 (the “Preliminary Prospectus Supplement”), the accompanying prospectus dated April 27, 2023 and the documents incorporated and deemed to be incorporated by reference therein.

The issuer has filed a registration statement (including a prospectus) with the U.S. Securities and Exchange Commission (“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 website 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 Credit Agricole Securities (USA) Inc. toll-free at 1-866-807-6030, by calling MUFG Securities Americas Inc. toll-free at 1-877-649-6848, by calling RBC Capital Markets, LLC toll-free at 1-866-375-6829 or by calling Truist Securities, Inc. toll-free at 1-800-685-4786.

Any legends, disclaimers or other notices that may appear below are not applicable to this communication and should be disregarded. Such legends, disclaimers or other notices have been automatically generated as a result of this communication having been sent via Bloomberg or another system.