Company: POR
Filing Date: 2025-07-25
Form Type: 424B5
Source: 0001140361-25-027364
Chunk: 13

Company: PORTLAND GENERAL ELECTRIC CO /OR/
Filing Date: 2025-07-25
Form: 424B5
Chunk 13
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4, served a total of 950 thousand retail customers.

Our outstanding common stock is listed on the NYSE under the symbol “POR.”

Our principal executive offices are located at 121 SW Salmon Street, Portland, Oregon 97204. Our telephone number is (503) 464-8000. Our website is www.portlandgeneral.com. Information contained on our website does not constitute a part of this prospectus supplement.

The foregoing information about us is only a general summary and is not intended to be comprehensive. For additional information about PGE, you should refer to the information described under the heading “Where You Can Find More Information.”

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#### TABLE OF CONTENTS

### PROSPECTUS SUPPLEMENT SUMMARY
This summary highlights certain information incorporated by reference or appearing elsewhere in this prospectus supplement. You should read the following summary in conjunction with the more detailed information contained in this prospectus supplement, the accompanying prospectus and the documents incorporated by reference.

ENROLLMENT. To enroll in the Plan, you must complete and sign an enrollment form and return it to American Stock Transfer and Trust Company LLC (which we refer to in this prospectus supplement as “AST” or the “Plan Administrator”). If you are not already a record holder of common stock, you must become one at the time of enrollment by purchasing at least $250 of common stock through the Plan. Shareholders of record may enroll online at www.astfinancial.com. If you are not currently a shareholder of record, you may request an enrollment form from the Plan Administrator.

PLAN ACCOUNTS. Shares of common stock held in the Plan (whether purchased through cash contributions, acquired through dividend reinvestment, deposited for safekeeping or otherwise) will be reflected in an account in the participant’s name (“Plan Account”).

DIVIDEND REINVESTMENT. You may elect to reinvest cash dividends on all, some or none of your shares. Cash dividends paid on shares as to which you elect reinvestment will be used to purchase additional shares of common stock, which will be added to your Plan Account. Cash dividends paid on shares as to which you do not elect reinvestment will be paid to you in cash.

SHARE PURCHASES. You may make your initial investment in the Company through the Plan at the time of enrollment, as described under “Enrollment” above. After you have enrolled in the Plan, you may purchase additional shares of common stock through the Plan in amounts of at least $25 per transaction. Purchases through