FACTSET RESEARCH SYSTEMS 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

Filed by the Registrantý

Filed by a Party other than the Registrant¨

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):

October 29, 2024

Dear FactSet Stockholder:

You are cordially invited to attend the 2024 Annual Meeting of Stockholders of FactSet Research Systems Inc., which will be held on Thursday, December 19, 2024, at 3:00 PM (Eastern Time). Our Annual Meeting will be a virtual meeting of stockholders, which will be conducted exclusively online via live webcast.

Details of the business to be conducted at the Annual Meeting are given in the attached Notice of Annual Meeting and Proxy Statement. Your vote is important. Whether or not you plan to attend the meeting, you are requested to complete, sign, date and promptly return the enclosed proxy card in the envelope provided or through Internet or telephone voting. Your proxy will be voted at the Annual Meeting in accordance with your instructions. If you do not specify a choice on one of the proposals described in this Proxy Statement, your proxy will be voted as recommended by the Board of Directors. If you hold your shares through an account with a brokerage firm or other nominee or fiduciary such as a bank, please follow the instructions you receive from such brokerage firm or other nominee or fiduciary to vote your shares.

On behalf of the Board of Directors, I would like to express our appreciation for your continued support and loyalty.

Sincerely,

F. Philip Snow

Chief Executive Officer

NOTICE OF ANNUAL MEETING OF STOCKHOLDERS

December 19, 2024

3:00 PM Eastern Time

Dear Stockholder:

The 2024 Annual Meeting of Stockholders of FactSet Research Systems Inc., a Delaware corporation, will be held virtually via live webcast on Thursday, December 19, 2024, at 3:00 PM (Eastern Time) for the following purposes:

1. To elect four directors to the Board of Directors.

2. To ratify the appointment of the accounting firm of Ernst & Young LLP as our independent registered public accounting firm for the fiscal year ending August 31, 2025.

3. To vote on a non-binding advisory resolution to approve the compensation of our named executive officers.

4. To vote on a stockholder proposal, if properly presented at the meeting.

To act upon such other business as may properly come before the Annual Meeting or any adjournment or postponement of the Annual Meeting.

These items are more fully described in the following pages, which are made part of this notice. Only stockholders of record at the close of business on October 21, 2024 are entitled notice of, and to vote at, this Annual Meeting.

Based on the success of our virtual annual meetings the past several years, this year’s Annual Meeting again will be a virtual meeting to be held via live webcast over the Internet. We believe the use of the Internet to host the Annual Meeting enables expanded stockholder participation. You will be able to attend the Annual Meeting, submit your questions and, if you are a record holder of our common stock or proxy for a record holder, vote your shares during the live webcast of the Annual Meeting by visitingwww.virtualshareholdermeeting.com/FDS2024 and entering your 16-digit control number.

We are pleased to take advantage of the Securities and Exchange Commission rules again this year that allow us to furnish these proxy materials, including our Annual Report on Form 10-K, to stockholders on the Internet. We believe that posting these materials on the Internet expedites stockholders’ receipt of the information that they need, while lowering the costs of printing and delivery and reducing the environmental impact of the Annual Meeting. We mailed to stockholders of record and beneficial owners the Notice of Internet Availability of Proxy Materials containing instructions on how to access these proxy materials, including our Annual Report on Form 10-K, on the Internet, as well as how to vote by Internet, telephone and mail.

To request and receive a free paper or email copy of the proxy materials, you may (1) visitwww.ProxyVote.com, (2) call 1-800-579-1639 or (3) send an email to sendmaterial@proxyvote.com. If sending an email, please include your control number in the subject line. Unless requested, you will not otherwise receive a paper or email copy. We encourage you to record your vote via the Internet as it is convenient and saves on printing costs.

As a stockholder of FactSet, your vote is important. Whether or not you plan to attend the virtual Annual Meeting, it is important that you vote as soon as possible to ensure that your shares are represented.

BY ORDER OF THE BOARD OF DIRECTORS

Megan Jones

Corporate Secretary

Norwalk, Connecticut

October 29, 2024

TABLE OF CONTENTS

45 Glover Avenue, Norwalk, CT 06850

PROXY STATEMENT FOR THE 2024 ANNUAL MEETING