Company: SREA
Filing Date: 2025-08-26
Form Type: 424B5
Source: 0001193125-25-188201
Chunk: 0

Company: SEMPRA
Filing Date: 2025-08-26
Form: 424B5
Chunk 0
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Filed Pursuant to Rule 424(b)(5)
Registration No. 333-272237 The information in this preliminary prospectus supplement is not complete and may be changed. This preliminary prospectus supplement and the accompanying prospectus are not an offer to sell these securities and we are not soliciting offers to buy these securities in any jurisdiction where the offer or sale is not permitted.

SUBJECT TO COMPLETION, DATED AUGUST 26, 2025 PRELIMINARY PROSPECTUS SUPPLEMENT (To Prospectus dated May 26, 2023) $ % Fixed-to-FixedReset Rate Junior Subordinated Notes due 20 We are offering $ aggregate principal amount of our % Fixed-to-FixedReset Rate Junior Subordinated Notes due 20 (the “notes”). The notes will bear interest (i) from and including , 2025 (the “original issue date”) to, but excluding, April 1, 2031 at the rate of % per annum and (ii) from and including April 1, 2031, during each Reset Period (as defined herein) at a rate per annum equal to the Five-year U.S. Treasury Rate (as defined herein) as of the most recent Reset Interest Determination Date (as defined herein) plus a spread of %, to be reset on each Reset Date (as defined herein); provided that the interest rate during any Reset Period will not reset below % per annum (which is the same interest rate as in effect from and including the original issue date to, but excluding, the First Reset Date (as defined herein) (the “Initial Fixed Period”)), and will mature on April 1, 20 . Interest on the notes will accrue from and including , 2025 and will be payable semi-annually in arrears on April 1 and October 1 of each year, beginning on April 1, 2026. So long as no event of default (as defined herein) with respect to the notes has occurred and is continuing, we may, at our option, defer interest payments on the notes, from time to time, for one or more deferral periods of up to 20 consecutive semi-annualInterest Payment Periods (as defined herein) each. During any deferral period, interest on the notes will continue to accrue at the then-applicable interest rate on the notes (as reset from time to time on any Reset Date occurring during such deferral period in accordance with the terms of the notes) and