Shoals Technologies Group, Inc.

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

SCHEDULE 14A

Proxy Statement Pursuant to Section 14(a) of the

Securities Exchange Act of 1934 (Amendment No. )

CHECK THE APPROPRIATE BOX:

Shoals Technologies Group, Inc.

(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):

LETTER FROM OUR CHIEF EXECUTIVE OFFICER

LETTER FROM THE CHAIR OF THE BOARD

NOTICE OF 2026 ANNUAL MEETING OF SHAREHOLDERS

All shareholders of Shoals Technologies Group, Inc. (the "Company") are cordially invited to attend the 2026 Annual Meeting of Shareholders (the "Annual Meeting"), which shall be held virtually on Thursday, April 30, 2026 at 10:00 a.m. Eastern Time.

Shareholders may access the meeting via the internet atwww.virtualshareholdermeeting.com/SHLS2026. By hosting the Annual Meeting online, we are able to communicate more effectively with our shareholders, facilitate increased attendance and participation from around the world, and reduce costs.

DATE OF DISTRIBUTION:

On or about March 20, 2026, we distributed the Notice of Internet Availability of Proxy Materials and made available electronically the Proxy Statement, Proxy Card and Annual Report on Form 10-K for the year ended December 31, 2025 (the “2025 Form 10-K”) online atwww.proxyvote.com/SHLS2026.

FORMAT OF THE ANNUAL MEETING OF SHAREHOLDERS:

The Board of Directors (the “Board”) has determined that we will hold a virtual Annual Meeting via webcast. The virtual meeting format has been designed to provide the same rights and ability to participate as you would have at an in-person meeting.

You will be able to submit questions and vote your shares electronically during the meeting by logging in using the 16-digit control number included on your Notice of Internet Availability of Proxy Materials, proxy card or the voting instruction form received from your bank or broker. Once you have logged in to

Time and Date10:00 a.m. Eastern Time on April 30, 2026Venuewww.virtualshareholdermeeting.com/SHLS2026Who May VoteShareholders of record of the Company's Class A Common Stock at the close of business on March 10, 2026 are entitled to vote at the Annual Meeting.How to VoteYour vote is important. We encourage you to review the proxy materials and vote your shares as soon as possible, even if you plan to attend the Annual Meeting online. If you are voting via the Internet, with your mobile phone or by telephone, be sure to have your Proxy Card or Voting Instruction Form (“VIF’) in hand and follow the instructions. You can vote any of four ways:Via the InternetVisit the website listed on your Notice of Internet Availability of Proxy Materials, Proxy Card or VIF

Notice of 2026 Annual Meeting of Shareholders

the virtual meeting, you will be able to submit questions and vote your shares electronically during the Annual Meeting. We will respond to as many inquiries at the Annual Meeting as time permits.

Access to the Webcast of the Annual Meeting: Only shareholders of record and beneficial owners of shares of our Class A Common Stock (the "Common Stock") as of the close of business on March 10, 2026, the record date, may attend and participate in the Annual Meeting, including voting and asking questions during the virtual Annual Meeting.

To attend the Annual Meeting, you must register at

www.proxyvote.com/SHLS2026. Upon completing your registration, you will receive further instructions via email, including a unique link that will allow you access to the Annual Meeting and to vote and submit questions during the Annual Meeting.

As part of the registration process, you must enter the control number located on your proxy card, voting instruction form, or Notice of Internet Availability. If you are a beneficial owner of shares registered in the name of a broker, bank, or other nominee, you will also need to provide the registered name on your account and the name of your broker, bank, or other nominee as part of the registration process.

On the day of the Annual Meeting, April 30, 2026, shareholders may begin to log in to the virtual Annual Meeting 15 minutes prior to the Annual Meeting. The Annual Meeting will begin promptly at 10:00 a.m. Eastern Time.

Should you encounter any difficulties accessing the virtual Annual Meeting platform, including any difficulties voting or submitting questions, we will have technicians ready to assist you. You may call the technical support number that will be posted in your instructional email.

A recording of the Annual Meeting will be available following the meeting in the investor relations section of our website atwww.shoals.com.

By order of the Board of Directors,

Bobbie L. King Jr.

Chief Legal Officer and Corporate Secretary

March 20, 2026

IMPORTANT NOTICE REGARDING THE AVAILABILITY OF PROXY MATERIALS FOR THE ANNUAL MEETING OF SHAREHOLDERS TO BE HELD ON APRIL 30, 2026The Proxy Statement and Proxy Card (collectively, the "Proxy Materials") are available at www.proxyvote.com/SHLS2026.

The content of our website is not incorporated by reference into this Proxy Statement or in any other report or document we file with the Securities and Exchange Commission (the “SEC”), and any references to our website are intended to be inactive textual references only.

With Your Mobile Device Scan the QR barcode on your Notice of Internet Availability of Proxy Materials, Proxy Card or VIF.By TelephoneCall the telephone number on your Notice of Internet Availability of Proxy Materials, Proxy Card or VIF.By MailIf you received paper copies of your Proxy Materials, mark, sign, date and return the Proxy Card in the envelope provided.

Notice of 2026 Annual Meeting of Shareholders

Forward-Looking Statements

This Proxy Statement contains “forward-looking statements” within the meaning of Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended. All statements other than statements of historical fact are “forward-looking statements” for purposes of federal and state securities laws, including any projections of earnings, revenue or other financial items; any statements of the plans, strategies and objectives of management; any statements regarding our environmental, social and governance and sustainability strategies, goals and initiatives; any statements regarding future economic conditions or performance; any statements of belief or expectation; and any statements of assumptions underlying any of the foregoing or other future events. Forward-looking statements may include, among others, the words, and variations of words, “will,” “may,” “expect,” “would,” “could,” “might,” “intend,” “plan,” “believe,” “likely,” “estimate,” “anticipate,” “objective,” “predict,” “project,” “drive,” “seek,” “aim,” “target,” “potential,” “commitment,” “outlook,” “continue” or any other similar words.

Although we believe that the expectations reflected in any of our forward-looking statements are reasonable, actual results or outcomes could differ materially from those projected or assumed in any of our forward-looking statements. Our future financial condition and results of operations, as well as any forward-looking statements, are subject to change and to inherent risks and uncertainties, many of which are beyond our control. Please see our risk factors, as they may be amended from time to time, set forth in our filings with the U.S. Securities and Exchange Commission (“SEC”), including our most recently filed Annual Report on Form 10-K and subsequent Quarterly Reports on Form 10-Q. There may be other factors not presently known to us or which we currently consider to be immaterial that could cause our actual results to differ materially from those projected in any forward-looking statements we make. We disclaim and do not undertake any obligation to update or revise any forward-looking statement in this report except as required by applicable law or regulation.

The information included in, and any issues identified as material for purposes of, this document may not be considered material for SEC reporting purposes. In the context of this disclosure, the term “material” is distinct from, and should not be confused with, such term as defined for SEC reporting purposes. Website references throughout this Proxy Statement are provided for convenience only, and the content on the referenced websites is not incorporated by reference into this Proxy Statement. In addition, historical, current and forward-looking sustainability-related statements may be based on standards for measuring progress that are still developing, internal controls and processes that continue to evolve, and assumptions that are subject to change in the future.