SunPower 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. )

Check the appropriate box:

(Name of Registrant as Specified In Its Charter)

(Name of Person(s) Filing Proxy Statement, if other than the Registrant)

Payment of Filing Fee (Check all boxes that apply):

NOTICE OF 2026 ANNUAL MEETING OF STOCKHOLDERS

To Be Held at 11:00 a.m. Pacific Time on November 2, 2026

Dear Stockholder:

You are cordially invited to attend the 2026 annual meeting of stockholders (the “Annual Meeting”) of SUNPOWER INC., a Delaware corporation (“SunPower”, the “Company”, “we”, “us”, “our” and like expressions). The Annual Meeting will be held virtually via a live webcast by registering online atwww.proxydocs.com/SPWR at 11:00 a.m. Pacific Time on November 2, 2026. There will not be a physical location for the Annual Meeting, and you will not be able to attend the Annual Meeting in person. We encourage you to attend online and participate. We recommend that you log in a few minutes before 11:00 a.m. Pacific Time on November 2, 2026 to ensure you are logged in when the Annual Meeting starts. The webcast will open 15 minutes before the start of the Annual Meeting. The Annual Meeting will be held for the following purposes:

1. To elect each of the Board of Directors’ 11 nominees for director to serve until the 2027 annual meeting of stockholders;

2. To approve an amendment to our Certificate of Incorporation, as previously amended, to effect a reverse stock split of our issued and outstanding shares of common stock, par value $0.0001 per share (the “Common Stock”), at a ratio ranging from 1-for-5 to 1-for-35, with the exact ratio to be set within that range at the discretion of our Board of Directors without further approval or authorization of our stockholders, and with our Board of Directors retaining the authority to abandon the amendment at any time prior to the filing thereof;

3. To ratify the selection of BDO USA, P.C. as our independent registered public accounting firm for the fiscal year ending January 3, 2027; and

4. To transact such other business as may properly come before the Annual Meeting or any adjournment or postponement thereof.

These items of business are more fully described in the proxy statement accompanying this notice of Annual Meeting.

The record date for the Annual Meeting (and any adjournment or postponement thereof) is September 18, 2026 (the “Record Date”). Only stockholders of record at the close of business on the Record Date may vote at the Annual Meeting or any adjournment or postponement thereof.

Pursuant to the rules of the U.S. Securities and Exchange Commission (the “SEC”), with respect to the Annual Meeting, we have elected to utilize the “full set delivery” option of providing paper copies of all of our proxy materials by mail. We expect to mail to our stockholders copies of all of the proxy materials on or about September 28, 2026. We are also furnishing proxy materials to our stockholders over the Internet, and you may read, print and download these proxy materials over the Internet atwww.proxydocs.com/SPWR.

Your vote is important. Whether or not you are able to attend the Annual Meeting online, it is important that your shares be represented. Please vote as soon as possible.

If you have any questions, would like additional copies of the Proxy Statement or need assistance with voting, please contact our proxy solicitor, Georgeson LLC, at (866) 946-2155 or by email at sunpower@georgeson.com.

On behalf of our Board of Directors, thank you for your participation in this important process.

By Order of the Board of Directors,

/s/ Thurman J. Rodgers

Thurman J. Rodgers

Chief Executive Officer and Executive Chairman

IMPORTANT NOTICE REGARDING THE AVAILABILITY OF PROXY MATERIALS FOR THE ANNUAL MEETING OF STOCKHOLDERS TO BE HELD ON NOVEMBER 2, 2026 Pursuant to the rules of the SEC, with respect to the Annual Meeting, we have elected to utilize the “full set delivery” option of providing paper copies of all of our proxy materials by mail. The proxy materials for the Annual Meeting are first being mailed on or about September 28, 2026 to stockholders of record as of September 18, 2026. We are also furnishing proxy materials to our stockholders over the Internet, and you may read, print and download these proxy materials over the Internet at www.proxydocs.com/SPWR.

You are cordially invited to attend the Annual Meeting online. Your vote is important. Whether or not you expect to attend the Annual Meeting online, please complete, date, sign and return the proxy mailed to you, or vote over the Internet as instructed in these materials, as promptly as possible in order to ensure your representation at the Annual Meeting. Even if you have voted by proxy, you may still vote online if you attend the Annual Meeting. Please note, however, that if your shares are held of record by a broker, bank or other agent and you wish to vote at the Annual Meeting, you must follow the instructions from such organization and will need to obtain a proxy issued in your name from that agent in order to vote your shares that are held in such agent’s name and account.