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. )

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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

Forrester Research, Inc.

(Name of Registrant as Specified In Its Charter)

(Name of Person(s) Filing Proxy Statement, if other than the Registrant)

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

 

Your Vote Counts! FORRESTER RESEARCH, INC. 2023 Annual Meeting Vote by May 8, 2023 11:59 PM ET FORRESTER RESEARCH, INC. 60 ACORN PARK DRIVE CAMBRIDGE, MA 02140 V01667-P87561 You invested in FORRESTER RESEARCH, INC. and it’s time to vote! You have the right to vote on proposals being presented at the Annual Meeting. This is an important notice regarding the availability of proxy materials for the stockholder meeting to be held on May 9, 2023. Get informed before you vote View the Proxy Statement and Annual Report online OR you can receive a free paper or email copy of the material(s) by requesting prior to April 25, 2023. If you would like to request a copy of the material(s) for this and/or future stockholder meetings, you may (1) visit www.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 (indicated below) in the subject line. Unless requested, you will not otherwise receive a paper or email copy. For complete information and to vote, visit www.ProxyVote.com Control # Vote Virtually at the Meeting* May 9, 2023 10:00 AM EDT Smartphone users Point your camera here and vote without entering a control number Virtually at: www.virtualshareholdermeeting.com/FORR2023 *Please check the meeting materials for any special requirements for meeting attendance. V1.1

Vote at www.ProxyVote.com THIS IS NOT A VOTABLE BALLOT This is an overview of the proposals being presented at the upcoming stockholder meeting. Please follow the instructions on the reverse side to vote these important matters. Board Recommends Voting Items 1. Election of Directors Nominees: For 01) David Boyce 02) Neil Bradford 03) George F. Colony 04) Anthony Friscia 05) Robert M. Galford 06) Warren Romine 07) Gretchen Teichgraeber 08) Yvonne Wassenaar 2. To approve an amendment and restatement of the Forrester Research, Inc. Amended and Restated Equity Incentive Plan. For 3. To ratify the selection of PricewaterhouseCoopers LLP as the Company’s independent registered public accounting firm for fiscal 2023. For For 4. To approve, by non-binding vote, executive compensation. 1 Year 5. To recommend, by non-binding vote, the frequency of executive compensation non-binding votes. NOTE: Such other business as may properly come before the meeting or any adjournment thereof. Prefer to receive an email instead? While voting on www.ProxyVote.com, be sure to click “Sign up for E-delivery”. V01668-P87561