TechTarget Inc

The matters in this Proxy Statement are solicited by and on behalf of our Board. The entire cost of such solicitation will be borne directly by us. In addition to the use of the mail, proxies may be solicited by personal interview, telephone, or other means of communication by directors, officers, and our other employees who will not be specially compensated for these services. We will also request that brokers, nominees, custodians, and other fiduciaries forward soliciting materials to the beneficial owners of shares held of record by such brokers, nominees, custodians, and other fiduciaries. We will reimburse such persons for their reasonable expenses in connection therewith. Certain information contained in this Proxy Statement relating to the occupations and security holdings of our directors and officers is based upon information received from the individual directors and officers.

A copy of our Form 10-K (including the audited consolidated financial statements and schedules) for the fiscal year ended December 31, 2024, as filed with the U.S. Securities and Exchange Commission, except for exhibits, will be furnished without charge to any stockholder upon written or oral request to: TechTarget, Inc., 275 Grove Street, Newton, Massachusetts 02466 Attention: Corporate Secretary, or by telephone: (617) 431-9200. This Proxy Statement and our Form 10-K are available through the investor relations portion of our website atinvestor.informatechtarget.com.

This Proxy Statement and the Form 10-K are available for viewing, printing, and downloading on or about June 10, 2025 atwww.edocumentview.com/TTGT.

By Order of the Board of Directors,

/s/ Charles D. Rennick

CHARLES D. RENNICK

Vice President, General Counsel

and Corporate Secretary

Using a black ink pen, mark your votes with an X as shown in this example. Please do not write outside the designated areas. Your vote matters – here’s how to vote! You may vote online or by phone instead of mailing this card. Votes submitted electronically must be received by 11:00 A.M., Eastern Daylight Time on July 24, 2025. Online Go to www.envisionreports.com/TTGT or scan the QR code — login details are located in the shaded bar below. Phone Call toll free 1-800-652-VOTE (8683) within the USA, US territories and Canada Save paper, time and money! Sign up for electronic delivery at www.envisionreports.com/TTGT 2025 Annual Meeting Proxy Card • IF VOTING BY MAIL, SIGN, DETACH AND RETURN THE BOTTOM PORTION IN THE ENCLOSED ENVELOPE.• A Proposals —— The Board of Directors recommend a vote FOR all nominees, FOR Proposals 2 and 3,– and “1 Year” for Proposal 4. 1. Election of Directors: For Against Abstain For Against Abstain For Against Abstain 01 -Sally Ashford 02 -Stephen A. Carter 03 -David Flaschen 04 -M. Sean Griffey 05 -Don Hawk 06 -Mary McDowell 07 -Gary Nugent 08 -Perfecto Sanchez 09 -Christina Van Houten For Against Abstain For Against Abstain 2. To ratify the appointment of PricewaterhouseCoopers LLP as 3. To approve an advisory (non-binding) resolution to approve the our independent registered public accounting firm for the fiscal compensation of our named executive officers. year ending December 31, 2025. 1 Year 2 Year 3 Year Abstain 4. To approve an advisory (non-binding) proposal on the frequency of future advisory votes on the compensation of our named executive officers. Authorized Signatures — This section must be completed for your vote to count. Please date and sign below. B Please sign exactly as name(s) appears hereon. Joint owners should each sign. When signing as attorney, executor, administrator, corporate officer, trustee, guardian, or custodian, please give full title. Date (mm/dd/yyyy) — Please print date below. Signature 1 — Please keep signature within the box. Signature 2 — Please keep signature within the box. 1UPX 044ZCG

2025 Annual Meeting Admission Ticket 2025 Annual Meeting of TechTarget, Inc. Stockholders Thursday, July 24, 2025, 11:00 A.M. Eastern Time TechTarget, Inc. 275 Grove Street, Newton, MA 02466 Upon arrival, please present this admission ticket and photo identification at the registration desk. Important notice regarding the Internet availability of proxy materials for the Annual Meeting of Stockholders. The material is available at: www.envisionreports.com/TTGT Small steps make an impact. Help the environment by consenting to receive electronic delivery, sign up at www.envisionreports.com/TTGT • IF VOTING BY MAIL, SIGN, DETACH AND RETURN THE BOTTOM PORTION IN THE ENCLOSED ENVELOPE.• TechTarget, Inc. Notice of 2025 Annual Meeting of Stockholders Proxy Solicited by Board of Directors for Annual Meeting — July 24, 2025 The undersigned, revoking all prior proxies, hereby appoints Charles D. Rennick and Daniel T. Noreck, and each of them, with full power of substitution and revocation, as Proxies to represent and vote as designated hereon all the shares of TECHTARGET, INC. (the “Company”) which the undersigned would be entitled to vote if personally present, at the 2025 Annual Meeting of Stockholders of the Company (“Annual Meeting”) to be held at 11:00 a.m., Eastern Daylight Time, on Thursday, July 24, 2025, at our corporate headquarters at 275 Grove Street, Newton, MA 02466 or at any postponement or adjournment thereof. Shares represented by this proxy will be voted by the stockholder as directed. If no such directions are indicated, the Proxies will have authority to vote FOR the election of all nominees in Proposal 1, FOR Proposals 2 and 3, and for 1 YEAR for Proposal 4 on the frequency of the vote on our compensation of our named executive officers. In their discretion, the Proxies are authorized to vote upon such other business as may properly come before the meeting. (Items to be voted appear on reverse side) Non-Voting Items C Change of Address — Please print new address below. Comments — Please print your comments below. Meeting Attendance Mark box to the right if you plan to attend the Annual Meeting.