Company: POR
Filing Date: 2025-07-25
Form Type: 424B5
Source: 0001140361-25-027363
Chunk: 42

Company: PORTLAND GENERAL ELECTRIC CO /OR/
Filing Date: 2025-07-25
Form: 424B5
Chunk 42
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 have a “bona fide public market” (as defined in FINRA Rule 5121).

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### LEGAL MATTERS
Certain legal matters will be passed upon for us by Latham & Watkins LLP and certain legal matters will be passed upon for us by Angelica Espinosa, our Senior Vice President and Chief Legal and Compliance Officer. As of July 24, 2025, Ms. Espinosa owned 20,134 shares of our common stock. Pursuant to various stock and employee benefit plans, Ms. Espinosa is eligible to purchase and receive shares of our common stock and to receive options to purchase shares of common stock. Davis Polk & Wardwell LLP will act as counsel to the agents, the forward sellers and the forward purchasers.

### EXPERTS
The financial statements of the Company incorporated by reference in this Prospectus, and the effectiveness of the Company’s internal control over financial reporting have been audited by Deloitte & Touche LLP, an independent registered public accounting firm, as stated in their reports. Such financial statements are incorporated by reference in reliance upon the reports of such firm, given their authority as experts in accounting and auditing.

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### WHERE YOU CAN FIND MORE INFORMATION
We file annual, quarterly and special reports, proxy statements and other information with the SEC. The SEC also maintains a web site that contains reports, proxy and information statements, and other information regarding registrants that file electronically with the SEC at www.sec.gov. You can inspect reports and other information we file at the offices of the New York Stock Exchange, 20 Broad Street, New York, New York 10005. In addition, we maintain a web site that contains information about us at www.portlandgeneral.com. The information found on, or otherwise accessible through, our website is not incorporated into, and does not form a part of, this prospectus supplement, the accompanying prospectus or any other report or document we file with or furnish to the SEC.

We have filed with the SEC a registration statement on Form S-3 (File No. 333-288955), of which this prospectus supplement and the accompanying prospectus are a part, including exhibits, schedules and amendments filed with, or incorporated by reference in, such registration statement, under the Securities Act. This prospectus supplement and the accompanying prospectus do not contain all of the