X0202 SCHEDULE 13D/A 0000905853 XXXXXXXX LIVE 1 Series A Cumulative Redeemable Preferred Stock 08/19/2026 false 0001611983 530307503 Liberty Broadband Corporation

12300 Liberty Boulevard Englewood CO 80112

Ronald A. Duncan 907-868-5600 2550 Denali Street, Suite 1000 Anchorage AK 99503 0000905853 N Ronald A. Duncan OO N X1 0.00 0.00 0.00 0.00 0.00 N 0.0 IN Series A Cumulative Redeemable Preferred Stock Liberty Broadband Corporation 12300 Liberty Boulevard Englewood CO 80112 This statement on Schedule 13D relates to the Series A Cumulative Redeemable Preferred Stock, par value $0.01 per share (the "Preferred Stock"), of Liberty Broadband Corporation, a Delaware corporation (now known as Fusion Merger Sub 1, LLC, the "Issuer" or "Liberty Broadband"). The statement on Schedule 13D originally filed with the Securities and Exchange Commission (the "SEC") by the Reporting Person, Mr. Ronald A. Duncan ("Mr. Duncan" or the "Reporting Person"), on December 23, 2020 (the "Schedule 13D"), is hereby amended and supplemented to include the information set forth herein. This amended statement on Schedule 13D/A (this "Amendment") constitutes Amendment No. 1 to the Schedule 13D (the Schedule 13D, as amended by the Amendment, collectively, the "Statement"). This Amendment is the final amendment to the Schedule 13D and an exit filing for the Reporting Person. Capitalized terms not defined herein have the meanings given to such terms in the Schedule 13D. Except as set forth herein, the Schedule 13D is unmodified. This Amendment is filed to disclose that the Reporting Person ceased to be the beneficial owner of more than five percent of the outstanding shares of Preferred Stock. Ronald A. Duncan 2550 Denali Street, Suite 1000, Anchorage, Alaska 99503 President and Chief Executive Officer of Liberty Capital Corporation. During the last five years, the Reporting Person has not been charged or convicted in a criminal proceeding. During the last five years, the Reporting Person was not a party to a civil proceeding of a judicial or administrative body of competent jurisdiction, where such person, as result of such proceeding, was or became 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 law. USA The information contained in Item 4 of the Schedule 13D is hereby amended and supplemented by adding the following information: As previously disclosed by the Issuer, on November 12, 2024, the Issuer entered into an Agreement and Plan of Merger (the "Merger Agreement") with Charter Communications, Inc. ("Charter"), Fusion Merger Sub 1, LLC, a Delaware limited liability company and wholly owned subsidiary of Charter ("Merger LLC"), and Fusion Merger Sub 2, Inc., a Delaware corporation and wholly owned subsidiary of Merger LLC ("Merger Sub"), whereby, subject to the terms thereof, (i) Merger Sub would merge with and into the Issuer (the "Merger"), with the Issuer surviving the Merger as the surviving corporation and a wholly owned subsidiary of Merger LLC, and (ii) the Merger would be immediately followed by a merger of the Issuer, as such surviving corporation, with and into Merger LLC (the "Upstream Merger", and together with the Merger, the "Combination"), with Merger LLC surviving the Upstream Merger as the surviving company and a wholly owned subsidiary of Charter. On August 19, 2026, the transactions contemplated by Merger Agreement, including the Combination, were completed, and each share of Preferred Stock was automatically converted into one validly issued, fully paid and nonassessable share of Charter's newly issued Series A cumulative redeemable preferred stock, par value $0.001 per share, and accordingly, as a result of the completion of the Merger, the Reporting Person disposed of all of the shares of Preferred Stock beneficially owned by the Reporting Person and ceased to be the beneficial owner of any shares of Preferred Stock. As of August 19, 2026, following the completion of the Merger, the Reporting Person beneficially owns zero shares of Preferred Stock. Other than as described in this Amendment (including with respect to the completion of the Combination disclosed in item 4 hereof), the Reporting Person has not effected any transactions with respect to the Preferred Stock during the 60 days preceding the date hereof. Not applicable. On August 19, 2026, following the completion of the Merger, the Reporting Person ceased to be the beneficial owner of more than five percent of the outstanding shares of Preferred Stock. Ronald A. Duncan /s/ Ronald A. Duncan 08/20/2026