PUBLIC SERVICE ENTERPRISE GROUP INC

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

SCHEDULE 14A INFORMATION

Proxy Statement Pursuant to Section 14(a) of the

Securities Exchange Act of 1934

(Amendment No. )

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PRELIMINARY PROXY STATEMENT - SUBJECT TO COMPLETION Logo PSEG 2026 Proxy Statement Ready for tomorrow. Notice of Annual Meeting April 21, 2026 – 1 P.M. ET Virtual Only

RECENT AWARDS & RECOGNITIONS 2026 America’s Most Responsible Companies – Newsweek and Statista, Inc. 2025 #1 in Customer Satisfaction with Residential Electric Service in the East Among Large Utilities - J.D. Power Studies ReliabilityOne® Outstanding System Resiliency Award - PA Consulting ReliabilityOne® Outstanding Customer Engagement Award - PA Consulting ReliabilityOne® Award for Outstanding Metropolitan Service Area Reliability Performance in the Mid-Atlantic Region for the 24th consecutive year - PA Consulting Most Trusted Companies in America - Forbes Customer Champion, Most Trusted Brands (residential), and Easiest to do Business With (residential) - Escalent Corporate Partner of the Year - Institute for Supply Management-New Jersey America’s Greatest Workplaces for Inclusion and Diversity - Newsweek and Plant-A Insights Group America’s Most Responsible Companies - Newsweek and Statista, Inc. America’s Most JUST Companies - JUST Capital and CNBC

NOTICE OF ANNUAL MEETING OF STOCKHOLDERS

AND PROXY STATEMENT OF PSEG

The Annual Meeting of Stockholders of Public Service Enterprise Group Incorporated (PSEG or Company) will be held on Tuesday, April 21, 2026, at 1:00 p.m. Eastern Time in a virtual-only format via live webcast on the Internet. You will not be able to attend the Annual Meeting in person. We designed the format of the virtual Annual Meeting to ensure that our stockholders who attend the virtual Annual Meeting will be afforded comparable rights and opportunities to participate as they would at an in-person meeting. Stockholders of record as of the close of business on February 20, 2026, will be able to attend, vote and submit questions during the virtual meeting by registering at: www.virtualshareholdermeeting.com/PEG2026.

PLEASE VOTE ON THESE ITEMS

To Submit Proposals for the 2027 Annual Meeting

To help protect the environment and save costs, we use the “Notice and Access” method of delivery of proxy materials. Instead of receiving paper copies of our proxy materials in the mail, shareholders receive a Notice of Internet Availability of Proxy Materials (Notice), which provides an Internet website address where shareholders can access electronic copies of the proxy materials and vote. The website also has instructions for voting by phone and requesting paper or e-mail copies of the proxy materials and proxy card.

If your shares are held by a bank, broker or other holder of record (sometimes referred to as holding shares “in street name”), including those in the various stockholder and employee plans that we offer, please follow the voting instructions from your bank, broker or plan administrator. For more information, see page 91.

The approximate date on which a Notice, this Proxy Statement and the accompanying proxy card were first sent or given to security holders and made available electronically via the Internet was March 12, 2026.

Important Notice Regarding the Availability of Proxy Materials for the Annual Meeting of Stockholders to be Held on April 21, 2026.

The 2026 Proxy Statement and our 2025 Annual Report to Stockholders are available at pseg.com/annualmeeting.

Electronic Delivery

You may sign up for electronic delivery of future proxy statements and related documents, such as the Annual Report and Form 10-K at the website below, depending on the nature of your ownership. Please note that these are not the same websites to use for voting. For further information about how to vote, see the Notice of Annual Meeting of Stockholders and page 91.

• If you are a stockholder of record, please go to enroll.icsdelivery.com/peg.

• For shares held in Employee Benefit Plans, please go to enroll.icsdelivery.com/peg.

• If your shares are held by a bank or broker, please go to enroll.icsdelivery.com/peg.

PSEG 2026 Proxy Statementi

ii PSEG 2026 Proxy Statement

Forward-Looking Statements

Forward-Looking Statements

The statements contained in this Proxy Statement that are not purely historical are “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995. Such forward-looking statements are subject to risks and uncertainties, which could cause actual results to differ materially from those anticipated. Such statements are based on management’s beliefs as well as assumptions made by and information currently available to management. When used herein, the words “anticipate,” “intend,” “estimate,” “believe,” “expect,” “plan,” “should,” “hypothetical,” “potential,” “forecast,” “project” and variations of such words and similar expressions are intended to identify forward-looking statements. Factors that may cause actual results to differ are often presented with the forward-looking statements themselves. Other factors that may cause actual results to differ materially from those contemplated in any forward-looking statements made by us herein are discussed in filings we make with the Securities and Exchange Commission (SEC), including our 2025 Annual Report on Form 10-K and subsequent reports on Form 10-Q and Form 8-K filed with the SEC, and available on our website: investor.pseg.com. All of the forward-looking statements made in this Proxy Statement are qualified by these cautionary statements and we cannot assure you that the results or developments anticipated by management will be realized, or even if realized, will have the expected consequences to, or effects on, us or our business, prospects, financial condition, results of operations or cash flows. Readers are cautioned not to place undue reliance on these forward-looking statements in making any investment decision. Forward-looking statements made in this Proxy Statement apply only as of the date hereof. While we may elect to update forward-looking statements from time to time, we specifically disclaim any obligation to do so, even in light of new information or future events, unless otherwise required by applicable securities laws. Information on our website should not be deemed incorporated into, or a part of, this Proxy Statement.

From time to time, PSEG and Public Service Electric and Gas Company (PSE&G) release important information via postings on their corporate Investor Relations website atinvestor.pseg.com. Investors and other interested parties are encouraged to visit the Investor Relations website to review new postings. You can sign up for automatic email alerts regarding new postings at the bottom of the webpage atinvestor.pseg.comor by navigating to the Email Alerts webpage investor.pseg.com/resources/email-alerts/default.aspx. Information oninvestor.pseg.com andinvestor.pseg.com/resources/email-alerts/default.aspx is not and shall not be deemed to be incorporated herein and is not part of this Proxy Statement.

PSEG 2026 Proxy Statementiii

Proxy Statement Summary