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:

☐ Preliminary Proxy Statement

☐ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2))

☐ Definitive Proxy Statement

☒ Definitive Additional Materials

☐ Soliciting Material Pursuant to §240.14a-12

iTeos Therapeutics, 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 the appropriate box):

☒ No fee required.

☐ Fee paid previously with preliminary materials.

☐ Fee computed on table in exhibit required by Item 25(b) per Exchange Act Rules 14a-6(i)(1) and 0-11

 

ITEOS VOTE THERAPEUTICS Online Go to www.envisionreports.com/ITOS or scan the QR code — login details are located in the shaded bar below. Stockholder Meeting Notice Important Notice Regarding the Availability of Proxy Materials for the iTeos Therapeutics, Inc. Stockholder Meeting to be Held on June 13, 2023 Under Securities and Exchange Commission rules, you are receiving this notice that the proxy materials for the annual stockholders’ meeting and annual report to stockholders are available on the Internet. Follow the instructions below to view the materials and vote online or request a copy of the materials. The items to be voted on and location of the annual meeting are on the reverse side. Your vote is important! This communication presents only an overview of the more complete proxy materials that are available to you on the Internet. We encourage you to access and review all of the important information contained in the proxy materials before voting. The proxy statement and annual report to stockholders are available at: www.envisionreports.com/ITOSEasy Online Access — View your proxy materials and vote. Step 1: Go to www.envisionreports.com/ITOS Step 2: Click on Cast Your Vote or Request Materials Step 3: Follow the instructions on the screen to log in Step 4: Make your selections as instructed on each screen for your delivery preferences. Step 5: Vote your shares. When you go online, you can also help the environment by consenting to receive electronic delivery of future materials. Obtaining a Copy of the Proxy Materials – If you want to receive a paper copy of the proxy materials or the annual report to stockholders, or both, you must make a request. There is no charge to you for requesting a copy. Please make your request as instructed on the reverse side on or before Friday, June 2, 2023 to facilitate timely delivery

 

Stockholder Meeting Notice The 2023 Annual Meeting of Stockholders of iTeos Therapeutics, Inc. will be held on Tuesday, June 13, 2023 at 9:00 am, Eastern Time, virtually via the internet at www.meetnow.global/MGRXVC9. To access the virtual meeting, you must have the information that is printed in the shaded bar located on the reverse side of this form. Proposals to be voted on at the meeting are listed below along with the Board of Directors’ recommendations The Board of Directors recommends a vote FOR all director nominees and FOR Proposal 2: 1. Election of the Class III director nominees to serve until the 2026 Annual Meeting of Stockholders: 01 - Michel Detheux 02 - David L. Hallal 03 - Tim Van Hauwermeiren 04 - Robert Iannone 2. To ratify the appointment of Deloitte Bedrijfsrevisoren / Réviseurs d’Entreprises BV/SRL as the Company’s independent registered public accounting firm for the fiscal year ending December 31, 2023 PLEASE NOTE – YOU CANNOT VOTE BY RETURNING THIS NOTICE. To vote your shares you must go online or request a paper copy of the proxy materials to receive a proxy card. Here’s how to order a copy of the proxy materials and select delivery preferences: Current and future delivery requests can be submitted using the options below. If you request an email copy, you will receive an email with a link to the current meeting materials. PLEASE NOTE: You must use the number in the shaded bar on the reverse side when requesting a copy of the proxy materials — Internet – Go to www.envisionreports.com/ITOS. Click Cast Your Vote or Request Materials. — Phone – Call us free of charge at 1-866-641-4276. — Email – Send an email to investorvote@computershare.com with “Proxy Materials iTeos Therapeutics, Inc.” in the subject line. Include your full name and address, plus the number located in the shaded bar on the reverse side, and state that you want a paper copy of the meeting materials. To facilitate timely delivery, all requests for a paper copy of proxy materials must be received by Friday, June 2, 2023.