SCHEDULE 13D

The information contained in Item 4 of this Statement is incorporated by reference herein.

The information contained in Item 4 of the Schedule 13D is hereby amended to delete the last three paragraphs thereof and supplemented to include the following information: On December 29, 2025, pursuant to the previously disclosed Stock Exchange Agreement, dated September 26, 2025, between the Reporting Person and the Issuer, the Reporting Person exchanged the 31,928,301 shares of Series B Convertible Preferred Stock, par value $0.001 per share, of the Issuer then owned by the Reporting Person for (i) 4,223,621 shares of a new series of convertible preferred stock designated as Series C Convertible Preferred Stock, par value $0.001 per share ("Series C Preferred Stock"), and (ii) 3,286,825 shares of Common Stock. The shares of Series C Preferred Stock are originally convertible into shares of Common Stock on a one-to-one basis. The shares of Series C Preferred Stock have the terms and conditions set forth in the Certificate of Designations for the Series C Preferred Stock. In connection with and effective upon the closing of such exchange, Mr. Marty E. Patterson ("Mr. Patterson"), President and Chief Executive Officer of the Reporting Person, resigned from the board of directors of the Issuer. Also on December 29, 2025, the Issuer, Charter Communications Holding Company, LLC ("Charter") and Pine Investor, LLC ("Pine" and, together with the Reporting Person and Charter, referred to herein collectively as the "Stockholders") entered into the previously disclosed Second Amended and Restated Stockholders Agreement (the "Second Amended and Restated SHA") and the Issuer entered into the previously disclosed amendment to its Registration Rights Agreement, dated as of March 10, 2021, by and among the Issuer and the other parties thereto (such amendment, the "RRA Amendment"). The full text of the Second Amended and Restated SHA and the RRA Amendment are included as Exhibit 7(d) and Exhibit 7(e) hereto, respectively, and are incorporated herein by reference. The shares of Common Stock beneficially owned by the Reporting Person and described in this Statement are being held by the Reporting Person for investment purposes. Other than as set forth in this Amendment, the Reporting Person does not have any present plans or proposals which relate to or would result in: (i) any acquisition by any person of additional securities of the Issuer, or any disposition of securities of the Issuer; (ii) any extraordinary corporate transaction, such as a merger, reorganization or liquidation, involving the Issuer or any of its subsidiaries; (iii) any sale or transfer of a material amount of assets of the Issuer or any of its subsidiaries; (iv) any change in the board or management of the Issuer, including any plans or proposals to change the number or term of directors or to fill any vacancies on the board; (v) any material change in the present capitalization or dividend policy of the Issuer; (vi) any other material change in the Issuer's business or corporate structure; (vii) any change in the Issuer's charter or bylaws or other actions which may impede the acquisition of control of the Issuer by any person; (viii) any delisting from a national securities exchange or any loss of authorization for quotation in an inter-dealer quotation system of a registered national securities association of a class of securities of the Issuer; (ix) any termination of registration pursuant to Section 12(g)(4) of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), of a class of equity securities of the Issuer; or (x) any action similar to any of those enumerated above. Notwithstanding the foregoing, the Reporting Person may determine to change its intentions with respect to the Issuer at any time in the future and may, for example, elect (i) to acquire additional securities of the Issuer in open market or privately negotiated transactions or (ii) to dispose of all or a portion of the Reporting Person's holdings of securities of the Issuer. In reaching any determination as to its future course of action, the Reporting Person will take into consideration various factors, such as the Issuer's business and prospects, other developments concerning the Issuer, other business opportunities available to the Reporting Person, tax considerations, liquidity needs and general economic and stock market conditions, including, but not limited to, the market prices of the securities.

The Reporting Person is the beneficial owner of 7,510,446 shares of Common Stock as a result of its ownership of 3,286,825 shares of Common Stock and 4,223,621 shares of Series C Preferred Stock that are convertible, at any time at the option of the holder, into the underlying shares of Common Stock. The 7,510,446 shares of Common Stock constitute approximately 39.3% of the outstanding shares of Common Stock, calculated based on (i) the 5,015,664 shares of Common Stock outstanding as of November 3, 2025, as reported in the Issuer's Quarterly Report on Form 10-Q for the quarter ended September 30, 2025, filed with the SEC on November 7, 2025, (ii) the 4,223,621 shares of Common Stock currently underlying the Series C Preferred Stock owned by the Reporting Person, pursuant to Rule 13d-3 of the Exchange Act and (iii) the 9,860,475 shares of Common Stock issued to the Stockholders on December 29, 2025. Furthermore, by giving effect to the 8,447,242 shares of Common Stock underlying the Series C Preferred Stock held by the other Stockholders, the Reporting Person would be deemed to own approximately 27.3% of the outstanding shares of Common Stock. As of the date hereof, Mr. Brian J. Wendling ("Mr. Wendling"), Chief Accounting Officer and Principal Financial Officer of the Reporting Person and a director of the Issuer, beneficially owns (i) 28,007 shares of Common Stock subject to vested, deferred stock units that are scheduled to be settled on the earlier of Mr. Wendling's separation from service or a change in control of the Issuer and (ii) 4,500 shares of Common Stock held directly. As of the date hereof, Mr. Patterson, President and Chief Executive Officer of the Reporting Person, beneficially owns 38,682 shares of Common Stock held directly.

The Reporting Person and, to the knowledge of the Reporting Person, each of Mr. Wendling and Mr. Patterson, have the sole power to vote or to direct the voting of and the sole power to dispose or direct the disposition of the shares of Common Stock beneficially owned by them, subject to the restrictions described in Item 6 of this Statement.

Other than as disclosed in this Statement, no transactions were effected by the Reporting Person, or, to the knowledge of the Reporting Person, any Schedule 1 Person, with respect to the Common Stock during the 60 days preceding the date hereof.

Not Applicable.

Not Applicable.

The information set forth in Item 4 is incorporated herein by reference.

7(d): Second Amended and Restated Stockholders Agreement, dated as of December 29, 2025, by and among comScore, Inc., Charter Communications Holding Company, LLC, Liberty Broadband Corporation and Pine Investor, LLC (incorporated by reference to Exhibit 10.4 to comScore, Inc.'s Current Report on Form 8-K (File No. 001-33520), filed with the Securities and Exchange Commission on December 31, 2025). 7(e): First Amendment to Registration Rights Agreement, dated as of December 29, 2025, by and among comScore, Inc., Charter Communications Holding Company, LLC, Liberty Broadband Corporation and Pine Investor, LLC (incorporated by reference to Exhibit 10.5 to comScore, Inc.'s Current Report on Form 8-K (File No. 001-33520), filed with the Securities and Exchange Commission on December 31, 2025).