WILLIS TOWERS WATSON PLC

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. )

Filed by the Registrant☒ Filed by a Party other than the Registrant☐

Check the appropriate box:

Willis Towers Watson Public Limited Company

(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):

2024 YEAR-END PROXY STATEMENT

Notice of Annual General Meeting of Shareholders

We are pleased to invite you to join Willis Towers Watson Public Limited Company’s 2025 Annual General Meeting of Shareholders (the “AGM”).

Items of business:

Election of nine directors

Advisory (non-binding) vote to ratify the appointment of the independent auditors and binding vote to fix the independent auditors’ remuneration

Advisory (non-binding) vote to approve named executive officer compensation

Grant the Board authority to issue shares under Irish law

Grant the Board authority to opt out of statutory pre-emption rights under Irish law

Who can vote:

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Only shareholders of record on March 17, 2025 are entitled to receive notice of, and to attend and vote at, the meeting and any adjournment or postponement of the meeting.

How to vote:

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Shareholders may vote by mail, over the Internet, by telephone, or in person at the annual meeting. See “Additional Information — Information about the Proxy Materials and the 2025 AGM” in this Proxy Statement for more information.

Attending the meeting:

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Shareholders entitled to attend and vote at the 2025 AGM may attend at Carton House, Carton Demesne, Maynooth, Co. Kildare, W23 TD98, Ireland.

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We encourage our shareholders to vote by proxy prior to 4:59 a.m. IST on May 15, 2025. With respect to shares held through a Company employee share plan, shareholders must vote by proxy prior to 4:59 a.m. IST on May 11, 2025.

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Shareholders who wish to attend the meeting in person should review “Additional Information — Information about the Proxy Materials and the 2025 AGM — What do I need in order to be admitted to the AGM?”, “How do I vote?” in this Proxy Statement. You will need proof of record or beneficial ownership of the Company’s ordinary shares as of that date in order to enter the meeting.

Date of mailing:

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This Proxy Statement, the Company’s Annual Report on Form 10-K and the Irish Statutory Accounts are available at www.proxyvote.com. These materials were mailed or made available to shareholders on or about March 28, 2025.

Your vote is important. We urge you to participate in deciding the items on the agenda and to read this Proxy Statement and accompanying materials for additional information concerning the matters to be considered at this meeting. Shareholders present at the meeting will have an opportunity to ask questions regarding the Irish Statutory Accounts and related reports to the representatives of our independent auditors. The only matters that will be addressed at the AGM will be the items of business on the agenda included in this Proxy Statement.

On behalf of the Board of Directors,

Nicole Napolitano

General Counsel, Corporate Governance & Public Company;

Company Secretary

March 28, 2025

Important Notice Regarding the Availability of Proxy Materials for the Company’s AGM to be held on Thursday, May 15, 2025. This Proxy Statement, the Company’s Annual Report on Form 10-K and the Irish Statutory Accounts are available atwww.proxyvote.com.

WILLIS TOWERS WATSON PUBLIC LIMITED COMPANY

2024 YEAR-END PROXY STATEMENT

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WILLIS TOWERS WATSON PUBLIC LIMITED COMPANY 1

2024 YEAR-END PROXY STATEMENT