SIGNET JEWELERS LTD

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

SCHEDULE 14A

(Rule 14a-101)

SCHEDULE 14A INFORMATION

Proxy Statement Pursuant to Section 14(a)

of the Securities Exchange Act of 1934

Filed by the Registrant

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Filed by a Party other than the Registrant

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Check the appropriate box:

SIGNET JEWELERS LIMITED

(Name of Registrant as Specified In Its Charter)

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CHAIR’S LETTER

May 14, 2026

Proxy Letter from the Chair of the Board

DEAR FELLOW SHAREHOLDERS,

Signet’s Board of Directors (the “Board”) worked closely with our management team in Fiscal 2026 to make progress on Signet’s goals while navigating a volatile and uncertain macroeconomic environment. In his first year as Signet’s CEO, J.K. Symancyk launched Grow Brand Love, a comprehensive strategy to consolidate and strengthen our brand portfolio and improve Signet’s operating model. The Board was encouraged to see these early actions support a return to sales growth and improved profitability, despite significant sector challenges, including a rapidly evolving tariff landscape and record gold prices.

Helen McCluskey Chair of the Board

As Board Chair, I’ve had the privilege of working closely with J.K. and benefiting from his retail industry insights. His honesty and openness to feedback shine through in his relationships with our team members and investors. Signet’s stock outperformance over the S&P 500 Specialty Retail Index in cumulative total return in Fiscal 2026 reflects a combination of factors, including the market’s growing confidence in J.K.’s leadership and is validation of the effort and commitment of Signet’s more than 27,000 team members.

The Board is committed to continuing to support J.K. and the entire management team by providing expertise, guidance and oversight and will continue to rigorously evaluate management’s performance through comprehensive metrics. The Board also regularly reviews its structure and practices to ensure it meets Signet’s evolving needs and strives forbest-in-class corporate governance. To this end, we made the following enhancements in Fiscal 2026:

We firmly believe that strong governance is rooted in a company’s values and that our Purpose-driven culture contributes to our long-term financial success. I’m proud that Signet has been named, for the second year, among the 2026 World’s Most Ethical Companies by Ethisphere and gratified by the fact that Signet earned the designation of a Great Place to Work-Certified TM company for the sixth consecutive year. These accolades speak to the values and commitment of our talented and passionate team members.

In support of Signet’s commitment to ongoing board refreshment, the Company recently announced the appointment of Jeff Gennette to the Board of Directors,

adding a seasoned retail executive with more than 40 years of industry experience, including as Chairman and CEO of Macy’s Inc., where he led the organization through periods of growth and transformation. His deep executive leadership, strategic planning capabilities, and broad operational experience across marketing, brand management, merchandising, and store operations will be a significant asset to the Board.

After serving on the Signet Board since March 2018, Nancy Reardon will not stand forre-election at the Company’s Annual Meeting of Shareholders (“Annual Meeting”). Signet and the Board extend our sincere appreciation to Nancy for her dedicated service and significant contributions, particularly in her role as Chair of the Human Capital Management & Compensation Committee.

During a period of meaningful commercial and cultural transformation for the Company, Nancy provided steady leadership, sound judgment, and thoughtful counsel, guiding critical decisions affecting Signet’s culture, team members, and long-term capabilities. Her guidance on Board composition and governance practices further strengthened oversight and supported the Company’s cultural evolution and reputation.

In addition to the accompanying Proxy Statement, we encourage you to review our Annual Report to Shareholders, including the Letters to Shareholders from J.K. and me. We also recommend that you review this year’s Corporate Citizenship & Sustainability Report, which is expected to be released in June, to understand how Signet is fulfilling its Purpose across the communities in which it operates.

Our Board also invites you to our 2026 Annual Meeting, which will be held on June 26, 2026, at 11:30 a.m., Eastern Time. The Annual Meeting will be held virtually via live audio webcast at www.virtualshareholdermeeting.com/SIG2026. Participation will only be available through this virtual link. Please review the instructions for participating in the “Shareholder Q&A” section of the accompanying Proxy Statement.

Thank you for your support of Signet Jewelers. We ask that you carefully consider the information in this Proxy Statement related to the various proposals. The Board is committed to the long-term success of our Company, and we value your input and feedback.

Sincerely,

Helen McCluskey

Chair of the Board, Signet Jewelers

Notice of Annual Meeting of Shareholders

At the Annual Meeting, the following items of business shall be considered:

1. Election of eleven members of the Company’s Board of Directors to serve until the next annual meeting of shareholders of the Company or until their respective successors are elected in accordance with the Bye-laws of the Company.

2. Appointment of KPMG LLP as independent registered public accounting firm (“independent auditor”) of the Company, to hold office from the conclusion of this Meeting until the conclusion of the next annual meeting of shareholders and authorization of the Audit Committee to determine its compensation.

3. Approval, on a non-binding advisory basis, of the compensation of the Company’s named executive officers as disclosed in the Proxy Statement (the “Say-on-Pay” vote).

Notice is hereby given that the 2026 Annual Meeting of Shareholders (“Annual Meeting”) of Signet Jewelers Limited (the “Company” or “Signet”) to be held on Friday, June 26, 2026 at 11:30 am, Eastern Time. The Annual Meeting will be held entirely online live via audio webcast.

If you are a Signet shareholder of record, you will be able to attend and participate in the Annual Meeting online by visitingwww.virtualshareholdermeeting.com/SIG2026.

Each of the proposals to be presented at the Annual Meeting will be voted upon by a poll. In addition, the Company will consider the transaction of any other business properly brought at the Annual Meeting or any adjournment or postponement thereof.

The Board has fixed the close of business on Friday, May 1, 2026 as the record date for the Annual Meeting. All of the Company’s shareholders of record at the close of business on that date are entitled to notice of, and to participate and vote at, the Annual Meeting and at any adjournment and continuation thereof.

Attendance at the Annual Meeting will be limited to shareholders of record, beneficial owners with evidence of ownership, corporate representatives of shareholders, proxies and guests invited by management who have a 16-digit control number, which shall be on the notice, proxy card or instructions that accompanied the proxy materials.

The Annual Meeting will be conducted pursuant to the Company’s Bye-laws and rules of order prescribed by the Chairman of the Annual Meeting.

By Order of the Board.

Matt Shady

Corporate Secretary

May 14, 2026

Important notice regarding the availability of proxy materials for the Annual Meeting of Shareholders to be held on June 26, 2026. The Notice of Internet Availability of Proxy Materials, Notice of Annual Meeting of Shareholders, Proxy Statement, Proxy Card and the Annual Report to Shareholders are available atwww.proxydocs.com/SIG.

WHETHER OR NOT YOU PLAN TO ATTEND THE VIRTUAL ANNUAL MEETING OF SHAREHOLDERS AND REGARDLESS OF THE NUMBER OF SHARES YOU OWN, PLEASE REGISTER YOUR VOTE BY APPOINTING A PROXY ELECTRONICALLY BY INTERNET OR BY TELEPHONE IN ACCORDANCE WITH THE INSTRUCTIONS ON THE PROXY CARD, OR, ALTERNATIVELY, MARK, SIGN AND DATE THE PROXY CARD IN ACCORDANCE WITH THE INSTRUCTIONS THEREON AND MAIL IT PROMPTLY TO ENSURE THAT YOUR SHARES WILL BE REPRESENTED. YOU MAY ELECTRONICALLY VOTE LIVE IF YOU ATTEND THE VIRTUAL ANNUAL MEETING OF SHAREHOLDERS. YOUR PROXY IS REVOCABLE AT ANY TIME BY SENDING WRITTEN NOTICE OF REVOCATION OR BY SUBMISSION OF A PROPERLY EXECUTED PROXY BEARING A LATER DATE TO BROADRIDGE BY THE DEADLINE OF 12:01 AM, EASTERN TIME (5:01 AM, BRITISH SUMMER TIME) ON JUNE 26, 2026 OR BY VOTING ELECTRONICALLY AT THE VIRTUAL MEETING.