TechTarget, Inc.

Item 5.02 Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers. On February 24, 2026, Mary McDowell notified the Board of Directors (the "Board") of TechTarget, Inc. (the "Company") of her intent to resign as the Chair of the Board and as a director, effective as of February 27, 2026. The decision of Ms. McDowell to resign from the Board was not the result of any disagreement between Ms. McDowell and the Company, its management, the Board or any committee thereof, or with respect to any matter relating to the Company’s operations, policies, or practices. The Company and the Board sincerely thank Ms. McDowell for her invaluable contributions to the Company. In connection with Ms. McDowell's resignation, Patrick Martell, the Chief Executive of Informa Markets and Chief Operating Officer of Informa PLC, was nominated by Informa PLC, in accordance with its rights under that certain Stockholder's Agreement dated December 2, 2024 by and among the Company, Informa PLC, and Informa US Holdings Limited, and elected by the Board to serve as a director and the Chair of the Board, effective March 1, 2026. The Company expects to enter into the Company's standard director indemnification agreement with Mr. Martell. In connection with his appointment as a director and the Chair of the Board, Mr. Patrick is not entitled to compensation under the Company’s 2026 non-employee director compensation plan.

Item 7.01 Regulation FD Disclosure. On February 27, 2026, the Company issued a press release announcing Ms. McDowell's resignation and the appointment of Mr. Martell. A copy of the press release is furnished as Exhibit 99.1 to this Current Report on Form 8-K and is incorporated by reference herein. The exhibit furnished under Item 7.01 of this Current Report on Form 8-K shall not be deemed to be “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or otherwise subject to the liabilities of that section, nor shall it be deemed incorporated by reference in any filing under the Exchange Act or the Securities Act of 1933, as amended, regardless of any general incorporation language in such filing.