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Check the appropriate box to designate the rule pursuant to which this Schedule is filed:
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X0202 SCHEDULE 13D/A 0000806968 XXXXXXXX LIVE 7 Common Stock, par value $0.001 per share 12/29/2025 false 0001158172 20564W105 COMSCORE, INC. Sea Containers 18 Upper Ground London X0 SE1 9GL Andrea Harris, GCC 44 20 7282 4600 WPP plc Sea Containers, 18 Upper Ground London X0 SE1 9GL Curt Myers, Esq. (212) 468-4800 Davis + Gilbert LLP 1675 Broadway New York NY 10019 0001636586 N CAVENDISH SQUARE HOLDING B.V. WC N P7 0.00 565968.00 0.00 565968.00 565968.00 N 3.8 OO 0000806968 N WPP PLC AF N Y9 0.00 565968.00 0.00 565968.00 565968.00 N 3.8 CO Common Stock, par value $0.001 per share COMSCORE, INC. Sea Containers 18 Upper Ground London X0 SE1 9GL This Amendment No. 7 relates to the Schedule 13D filed by Cavendish Square Holding B.V., a private limited liability company incorporated under the laws of the Netherlands ("Cavendish"), and WPP plc, a public limited company formed under the laws of Jersey, with the Securities and Exchange Commission on April 7, 2015, as amended (the "Schedule 13D"), relating to the common stock, par value $0.001 per share (the "Common Stock"), of comScore, Inc., a Delaware corporation (the "Company"). Unless set forth below, all Items are unchanged from the Schedule 13D. Capitalized terms used herein and not otherwise defined herein shall have the meanings ascribed to such terms in the Schedule 13D. This Schedule 13D is being filed by Cavendish and WPP plc, a public limited company formed under the laws of Jersey. WPP plc indirectly holds 100% of the outstanding stock of Cavendish through a series of intervening holding companies. Cavendish and WPP plc are sometimes referred to herein collectively as the "Reporting Persons" and individually as a "Reporting Person." The address of the principal office of Cavendish is Laan op Zuid 167, 3072 DB Rotterdam, the Netherlands. The address of the principal office of WPP plc is Sea Containers, 18 Upper Ground, London, United Kingdom, SE1 9GL. The organizational structure of WPP plc and its subsidiaries (the "WPP Group") brings together media intelligence, data solutions, creative services, production capabilities, enterprise solutions and strategic counsel on a national, multinational and global scale. During the past five years, neither of the Reporting Persons nor, to the knowledge of the Reporting Persons, any of their respective executive officers or directors, has been convicted in a criminal proceeding (excluding traffic violations and similar misdemeanors). During the past five years, neither of the Reporting Persons nor, to the knowledge of the Reporting Persons, any of their respective executive officers or directors, has been a party to a civil proceeding of a judicial or administrative body of competent jurisdiction as a result of which such person was or is subject to a judgment, decree or final order enjoining future violations of, or prohibiting or mandating activities subject to, federal or state securities laws or finding any violation with respect to such laws. The name, citizenship, business address, principal business occupation or employment of the directors and executive officers of each of the Reporting Persons are set forth on Annex A hereto. As of the date of this Amendment No. 7, Cavendish is deemed to beneficially own an aggregate of 565,968 shares of Common Stock (the "Shares"), representing approximately 3.8% of the Company's outstanding Common Stock, based upon disclosure in the Company's Annual Report on Form 10-K, filed on March 26, 2026, that there were 15,023,514 shares of Common Stock outstanding on March 16, 2026. WPP plc indirectly owns 100% of Cavendish and therefore may be deemed to have beneficial ownership of the Shares. Cavendish disclaims beneficial ownership of the Shares. Each of Cavendish and WPP plc may be deemed to have shared power to vote and dispose or direct the vote and direct the disposition of the Shares. The Reporting Persons ceased to be beneficial owners of more than five percent of the Company's outstanding Common Stock on December 29, 2025, solely as a result of an increase in the aggregate amount of shares of Common Stock outstanding on that date. CAVENDISH SQUARE HOLDING B.V. /s/ A. van Heulen-Mulder A. van Heulen-Mulder/Managing Director 05/06/2026 WPP PLC /s/ Balbir Kelly-Bisla Balbir Kelly-Bisla/Company Secretary 05/06/2026