Form SCHEDULE 13D/A CHARTER COMMUNICATIONS, Filed by: ADVANCE/NEWHOUSE PARTNERSHIP

The information with respect to the consummation of the Transactions and the Ancillary Agreements entered into in connection therewith, as well as the continued Suspension of the Share Repurchases set forth in Items 5(c) and 6 is incorporated herein by reference to the extent responsive to this Item 4.

Item 5(a) of the Schedule 13D is amended and supplemented to read as follows: (a) The Reporting Persons are the beneficial owner of 18,647,794 shares of Class A Common Stock (including Class B Common Units on an as-converted, as-exchanged basis). The 18,647,794 shares of Class A Common Stock constitute approximately 14.35% of the outstanding shares of Class A Common Stock, based on approximately 129.94 million shares of Class A Common Stock outstanding as of August 20, 2026 (as provided by the Issuer on such date). In addition, Michael A. Newhouse is the beneficial owner of 6,181 shares of restricted Class A Common Stock received by him in connection with his services as a director of the Issuer and Samuel I. Newhouse, III, is the beneficial owner of 593 shares of Class A Common Stock.

Item 5(b) of the Schedule 13D is amended and supplemented to read as follows: (b) The Reporting Persons have the sole power to (i) vote or direct the voting of 18,647,794 shares of Class A Common Stock beneficially owned by them as described in the Schedule 13D (including Class B Common Units on an as-converted, as-exchanged basis) and (ii) dispose or direct the disposition of such shares, in each case, subject to the terms of the Amended LLC Agreement, Amended Exchange Agreement and Third Amended and Restated Stockholders Agreement, as described in the Schedule 13D (as amended). Michael A. Newhouse has sole voting and dispositive power over 6,181 shares of restricted Class A Common Stock beneficially owned by him. Samuel I. Newhouse, III, has sole voting and dispositive power over the 593 shares of Class A Common Stock beneficially owned by him.

On August 4, 2025, pursuant to the terms of the Share Repurchase Agreement, A/N delivered to the Issuer the Suspension Notice which suspended the share repurchase program under the Share Repurchase Agreement. In the Suspension Notice, A/N has informed the Issuer that A/N presently intends for the suspension to continue through the consummation of the closing of the transactions contemplated by the Transaction Agreement or the termination thereof, but reserves the right to end such suspension before or after such time. Following the execution of the A/N Letter Agreement, A/N intends that the Suspension of the Share Repurchases shall continue until such time as A/N delivers a notice to the Issuer terminating the Suspension of the Share Repurchases.

Not applicable.

Not applicable.

Item 6 of the Schedule 13D is supplemented as follows: Third Amended and Restated Stockholders Agreement The Third Amended and Restated Stockholders Agreement provides, among other things, that on the Closing Date, the size of the board of directors of Charter (the "Board") will be thirteen directors, the Liberty director designees will resign from the Board, A/N's director designees will continue to serve on the Board and Cox Parent's three designees will be appointed to the Board. From and after the closing of the Transactions, each of Cox Parent and A/N are entitled to designate up to three nominees to be elected to the Board, provided that each maintains certain specified voting or equity ownership thresholds. Cox Parent and A/N also have certain committee designation rights, subject to applicable stock exchange rules and certain specified voting or equity ownership thresholds, and other governance rights. Additionally, the Third Amended and Restated Stockholders Agreement provides that each of Cox Parent and A/N are subject to certain limits on acquisitions of equity securities of Charter (30% in the case of Cox Parent; 19% in the case of A/N). In addition, any shares owned by Cox Parent or A/N in excess of its applicable voting cap (30% in the case of Cox Parent; 15% in the case of A/N) must be voted in proportion to the public stockholders of Charter, other than with respect to certain specified matters. Pursuant to the Third Amended and Restated Stockholders Agreement, each of Cox Parent and A/N are subject to certain standstill provisions and are not permitted to form a group, within the meaning of Regulation 13D, with each other or otherwise have arrangements or understandings concerning Charter except as otherwise permitted by the Third Amended and Restated Stockholders Agreement. Pursuant to the Third Amended and Restated Stockholders Agreement, each of Cox Parent and A/N are entitled to preemptive rights to maintain their respective percentage equity ownership of Charter in certain specified circumstances and to the extent that each maintains certain specified thresholds of equity ownership in Charter. Each of Cox Parent and A/N are subject to certain restrictions on their ability to sell, transfer or dispose of their Charter securities. The rights of each of Cox Parent and A/N under the Third Amended and Restated Stockholders Agreement will generally terminate as such party falls below certain equity ownership thresholds, subject to certain grace periods during which such party can return its ownership or voting interest to the applicable threshold. The Third Amended and Restated Stockholders Agreement also provides that, on the Closing Date, (i) Alexander C. Taylor, Chairman and Chief Executive Officer of Cox Parent, will serve as the Chairman of the Board for an initial three-year term (unless Mr. Taylor ceases to serve as a member of the Board prior thereto) and (ii) the lead independent director of the Board will be Eric L. Zinterhofer. Following Mr. Taylor's term as Chairman, the Board will return to its normal annual process. Additionally, following Mr. Taylor's term as Chairman, Christopher L. Winfrey, the Chief Executive Officer of Charter, will serve as Chairman of the Board; provided that if Mr. Winfrey is no longer a member of the Board or is unwilling to serve as Chairman, then Mr. Zinterhofer instead will serve as Chairman (subject to his continued membership on the Board and willingness to serve). The foregoing description of the Third Amended and Restated Stockholders Agreement does not purport to be complete and is subject to, and qualified in its entirety by, the Third Amended and Restated Stockholders Agreement, a copy of which is attached as Exhibit 10.1 hereto and incorporated herein by reference. A/N Letter Agreement On August 19, 2026, the Issuer, Charter Holdings and A/N entered the A/N Letter Agreement, which, among other things, terminates the Share Repurchase Agreement and sets forth the updated terms of A/N's participation in the Issuer's share repurchases going forward. Under the A/N Letter Agreement, A/N will sell to the Issuer or to Charter Holdings, generally on a monthly basis, a number of shares of the Issuer's Class A Common Stock or Charter Holdings common units that represents a pro rata participation by A/N and its affiliates in any repurchases of shares of the Issuer's Class A Common Stock from persons other than A/N or Cox Parent effected by the Issuer during the immediately preceding calendar month, at a purchase price equal to the average price paid by the Issuer for the shares repurchased from persons other than A/N or Cox Parent during such immediately preceding calendar month and excluding repurchases in privately negotiated transactions or deemed repurchases due to cashless exercise of or payment of withholding taxes with respect to director, officer or employee equity awards of the Issuer. The Issuer has the right to terminate this arrangement (i) prior to August 19, 2032, if an unforeseen circumstance arises that would cause the continued repurchases to result in any significant adverse impact to the Issuer as determined by the Issuer in good faith or (ii) at any time after August 19, 2032. A/N has the right to terminate or suspend the repurchase arrangement at any time. A/N has exercised its right to suspend its participation in the repurchase arrangement until such time as A/N chooses to end the suspension by providing a written notice to the Issuer in accordance with the terms of the A/N Letter Agreement. The foregoing description of the A/N Letter Agreement does not purport to be complete and is subject to, and qualified in its entirety by, the A/N Letter Agreement, a copy of which is attached as Exhibit 10.2 hereto and incorporated herein by reference. Amended LLC Agreement The Amended LLC Agreement amends and restates the amended and restated limited liability company agreement of Charter Holdings, dated as of May 18, 2016, by and among Charter, Charter Holdings, A/N and the other parties thereto. The Amended LLC Agreement, among other things, specifies the terms of the Charter Holdings common units and Charter Holdings convertible preferred units, consistent with the preferred term sheet filed as Exhibit C to the Transaction Agreement. The foregoing description of the Amended LLC Agreement does not purport to be complete and is subject to, and qualified in its entirety by, the Amended LLC Agreement, a copy of which is attached as Exhibit 10.3 hereto and incorporated herein by reference. Amended TRA The Amended TRA amends and restates the tax receivables agreement, dated as of May 18, 2016, by and among Charter, A/N and the other parties thereto. The Amended TRA sets forth the terms pursuant to which Charter will pay A/N and Cox NewCo, as applicable, for tax benefits arising from A/N's or Cox NewCo's potential future exchanges of their respective Charter Holdings common units and Charter Holdings convertible preferred units, as applicable, into cash or Charter Class A common stock pursuant to the Amended Exchange Agreement. The foregoing description of the Amended TRA does not purport to be complete and is subject to, and qualified in its entirety by, the Amended TRA, a copy of which is attached as Exhibit 10.4 hereto and incorporated herein by reference. Amended Exchange Agreement The Amended Exchange Agreement amends and restates the exchange agreement, dated as of May 18, 2016, by and among Charter, A/N and the other parties thereto. The Amended Exchange Agreement specifies the terms pursuant to which Cox Parent and A/N may exchange their respective Charter Holdings common units into Charter Class A common stock, cash or a combination thereof. The foregoing description of the Amended Exchange Agreement does not purport to be complete and is subject to, and qualified in its entirety by, the Amended Exchange Agreement, a copy of which is attached as Exhibit 10.5 hereto and incorporated herein by reference. Amended RRA The Amended RRA amends and restates the registration rights agreement, dated as of May 18, 2016, by and among Charter, A/N and Liberty. The Amended RRA provides, among other things, that A/N and Cox Parent may require that Charter register for resale the Charter Class A common stock issuable upon the conversion or exchange of Charter Holdings common units and Charter Holdings convertible preferred units in certain circumstances and subject to certain thresholds and exceptions. The foregoing description of the Amended RRA does not purport to be complete and is subject to, and qualified in its entirety by, the Amended RRA, a copy of which is attached as Exhibit 10.6 hereto and incorporated herein by reference.

Exhibit 10.1 - Third Amended and Restated Stockholders Agreement, dated as of August 19, 2026, by and among Charter Communications, Inc., Cox Enterprises, Inc., Cox Communications Equity Holdings, Inc. and Advance/Newhouse Partnership (incorporated by reference to Exhibit 10.1 to the Form 8-K filed by the Issuer on August 20, 2026). Exhibit 10.2 - Letter Agreement, dated as of August 19, 2026, by and among Charter Communications, Inc., Charter Communications Holdings, LLC and Advance/Newhouse Partnership (incorporated by reference to Exhibit 10.3 to the Form 8-K filed by the Issuer on August 20, 2026). Exhibit 10.3 - Second Amended and Restated Limited Liability Company Agreement of Charter Communications Holdings, LLC, dated as of August 19, 2026, by and among Charter Communications, Inc., Cox Communications Equity Holdings, Inc., Advance/Newhouse Partnership and the other parties thereto (incorporated by reference to Exhibit 10.4 to the Form 8-K filed by the Issuer on August 20, 2026). Exhibit 10.4 - Amended and Restated Tax Receivables Agreement, dated as of August 19, 2026, by and among Charter Communications, Inc., Cox Communications Equity Holdings, Inc., Advance/Newhouse Partnership and the other parties thereto (incorporated by reference to Exhibit 10.5 to the Form 8-K filed by the Issuer on August 20, 2026). Exhibit 10.5 - Amended and Restated Exchange Agreement, dated as of August 19, 2026, by and among Charter Communications, Inc., Cox Enterprises, Inc., Cox Communications Equity Holdings, Inc., Advance/Newhouse Partnership and the other parties thereto (incorporated by reference to Exhibit 10.6 to the Form 8-K filed by the Issuer on August 20, 2026). Exhibit 10.6 - Amended and Restated Registration Rights Agreement, dated as of August 19, 2026, by and among Charter Communications, Inc., Cox Enterprises, Inc., Cox Communications Equity Holdings, Inc. and Advance/Newhouse Partnership (incorporated by reference to Exhibit 10.7 to the Form 8-K filed by the Issuer on August 20, 2026).