Company: SREA
Filing Date: 2025-08-26
Form Type: 424B5
Source: 0001193125-25-188201
Chunk: 70

Company: SEMPRA
Filing Date: 2025-08-26
Form: 424B5
Chunk 70
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ncor”) ability to reduce or eliminate its quarterly                                                                  
 dividends due to regulatory and governance requirements and commitments, including by actions of Oncor’s independent directors or a minority member director; |

| • |     | changes in tax and trade policies, laws and regulations, including tariffs, revisions to international trade                                                                                                                                            
 agreements and sanctions, such as those imposed in connection with the war in Ukraine, any of which may increase our costs, reduce our competitiveness, impact our ability to do business with certain counterparties, or impair our ability to resolve 
 trade disputes; and                                                                                                                                                                                                                                     |

| • |     | other uncertainties, some of which are difficult to predict and beyond our control. |

We caution you not to rely unduly on any forward-looking statements. You should review and consider carefully the risks, uncertainties and other factors that affect our businesses as described herein and in our reports and other documents on file with the SEC that are incorporated by reference in this prospectus, any prospectus supplement, and any related free writing prospectus issued by us. You may obtain copies of these reports and documents as described under “Where You Can Find More Information” in this prospectus. This prospectus incorporates by reference, and any prospectus supplement or free writing prospectus may contain or incorporate by reference market, demographic and industry data and forecasts that are based on or derived from independent industry publications, publicly available information, government data and other information from third parties or that have been compiled or prepared by our management or employees. We do not guarantee the accuracy or completeness of any of this information, and we have not independently verified any of the information provided by third-party sources. In addition, market, demographic and industry data and forecasts that may be contained or incorporated by reference in this prospectus, any prospectus supplement or any free writing prospectus may involve estimates, assumptions and other uncertainties and are subject to change based on various factors, including those discussed under this heading “Forward-Looking Statements and Market Data,” under the heading “Risk Factors” in this prospectus, the applicable prospectus supplement and any related free writing prospectus, and under similar headings in documents that are incorporated or deemed to be incorporated by reference in this prospectus and the applicable prospectus supplement. In that regard, any statement to the effect that Oncor operates the largest transmission and distribution system in Texas is based on the number of end-usecustomers and miles of transmission and distribution lines. Accordingly, you should not place undue reliance on any of this information. 3

WHERE YOU CAN FIND MORE