Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D. C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2025 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number 001-36713 LIBERTY BROADBAND CORPORATION (Exact name of Registrant as specified in its charter) State of Delaware 47-1211994 ( ...

Exhibit 99.1 LIBERTY BROADBAND REPORTS FIRST QUARTER 2025 FINANCIAL RESULTS Englewood, Colorado, May 7, 2025 – Liberty Broadband Corporation ("Liberty Broadband") (Nasdaq: LBRDA, LBRDK, LBRDP) today reported first quarter 2025 results. Headlines include (1): Corporate Updates On November 12, 2024, Liberty Broadband entered into a definitive agreement to be acquired by Charter. Holders of Liberty Broadband common stock will receive 0.236 of a share of Charter common stock per share of Liberty Broadband commo ...

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D. C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2025 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number 001-36713 LIBERTY BROADBAND CORPORATION (Exact name of Registrant as specified in its charter) State of Delaware 47-1211994 ...

Exhibit 99.1 LIBERTY BROADBAND REPORTS FOURTH QUARTER AND YEAR END 2024 FINANCIAL RESULTS Englewood, Colorado, February 27, 2025 – Liberty Broadband Corporation ("Liberty Broadband") (Nasdaq: LBRDA, LBRDK, LBRDP) today reported fourth quarter and year end 2024 results. Headlines include (1): "Our merger with Charter is progressing well, including getting the requisite shareholder approval yesterday, and we are actively working towards spinning off GCI this year," said John Malone, Liberty Broadband Chairman ...

Ownership and Control - Liberty Broadband controls 25.01% of the aggregate voting power of Charter Communications, Inc. [457] - As of December 31, 2024, Liberty Broadband owned approximately 45.3 million shares of Charter Class A common stock, representing an approximate 31.9% economic ownership interest in Charter [467] Debt and Financial Obligations - As of November 12, 2024, Liberty Broadband had existing debt of $2.6 billion, which will be repaid or assumed by Charter prior to the closing of the Combination [463] - Total material cash requirements amount to $6,445 million, with $3,666 million in debt due, and $2,138 million for interest expense and preferred stock dividends [547] - As of December 31, 2024, GCI Holdings had $451 million in variable rate debt with a weighted average interest rate of 6.3% and $600 million in fixed rate debt with a weighted average interest rate of 4.8% [583] Combination and Divestiture - The Combination is expected to close on June 30, 2027, subject to the completion of the GCI Divestiture and other customary closing conditions [462] - Liberty Broadband will divest the GCI business prior to the closing of the Combination, which is expected to be taxable to Liberty Broadband and its stockholders [460] - The GCI Divestiture is expected to result in a net decrease of approximately 11.5 million shares of Charter Class A common stock outstanding [463] - Charter will issue approximately 34.0 million shares of Charter Class A common stock to holders of Liberty Broadband common stock at the closing of the Combination [463] GCI Holdings Performance - GCI Holdings reported a revenue increase of $35 million for the year ended December 31, 2024, reaching $1,016 million compared to $981 million in 2023 [508] - Operating income for GCI Holdings increased by $27 million to $144 million for the year ended December 31, 2024, compared to $117 million in 2023 [510] - Adjusted OIBDA for GCI Holdings was $362 million for the year ended December 31, 2024, slightly up from $361 million in 2023 [508] - GCI Holdings reported total revenue of $1,016 million for the year ended December 31, 2024, an increase from $981 million in 2023 [569] - Consumer data revenue increased by $5 million to $238 million in 2024, driven by higher recurring monthly charges [570] - Business data revenue increased by $42 million for the year ended December 31, 2024, driven by increased sales to health care and education customers [573] Compliance and Legal Matters - GCI Holdings recognized an estimated liability of $27 million related to RHC Program compliance issues, including a $15 million settlement expense recorded in 2022 [489] - The company entered into a final settlement agreement with the FCC and DOJ, resulting in a total cash payment of $41 million in 2023 [492] - GCI Holdings is unable to estimate potential losses related to ongoing compliance issues identified in the third quarter of 2022 [491] Charter Communications Performance - Charter lost 508,000 Internet customers in 2024, attributed to the end of the FCC's Affordable Connectivity Program and competitive pressures [500] - Charter added 2,117,000 mobile lines in 2024, benefiting from its pricing and packaging strategy [500] - Charter's revenue increased by $478 million to $55,085 million in 2024, primarily due to growth in mobile lines and average revenue per customer [522] - Charter's Adjusted OIBDA increased by $495 million to $22,442 million in 2024 compared to 2023 [524] Cash Flow and Financial Activities - Net cash provided by operating activities increased by $88 million to $104 million in 2024 compared to 2023, driven by timing differences in working capital accounts [538] - Net cash used in financing activities decreased by $209 million to $181 million in 2024 compared to 2023 [538] - Net cash flows used in financing activities included repurchase of approximately $1,415 million in exchangeable senior debentures and issuance of $1,265 million in 3.125% Debentures due 2053 [543] Taxation - The effective income tax rate decreased to 20% in 2024 from 23% in 2023, primarily due to federal tax credits and non-taxable proceeds [531][532] Operating Expenses and Other Financial Metrics - Operating expenses for GCI Holdings were $257 million in 2024, compared to $245 million in 2023 [569] - Selling, general and administrative expenses increased by $22 million for the year ended December 31, 2024, primarily due to increased labor-related costs [578] - Stock-based compensation decreased by $3 million for the year ended December 31, 2024, due to lower value of new awards granted [579] - Depreciation and amortization decreased by $23 million for the year ended December 31, 2024, as certain assets became fully depreciated [580] Future Plans - The company expects corporate cash and other available sources of liquidity to cover corporate expenses for the foreseeable future [544] - The company plans to exit the video business in 2025, subject to regulatory approvals [572][576]

Core Viewpoint - Kaskela Law LLC is investigating Liberty Broadband Corporation on behalf of its shareholders regarding the acquisition by Charter Communications and potential violations of securities laws [1][3]. Group 1: Acquisition Details - On November 13, 2024, Charter Communications announced an all-stock acquisition of Liberty Broadband, offering 0.236 shares of Charter common stock for each share of Liberty common stock held [2]. - Following the transaction's completion, Liberty Broadband's shareholders will be cashed out, and the company's shares will cease to be publicly traded [2]. Group 2: Investigation Focus - The investigation aims to determine if Liberty Broadband's officers and/or directors violated securities laws in agreeing to the sale to Charter [3]. - It will also assess whether the transaction undervalues Liberty Broadband's shares and if all material information regarding the transaction is adequately disclosed to investors [3].

Mergers and Acquisitions Overview - Marinus Pharmaceuticals has entered into a definitive agreement with Immedica Pharma AB for $0.55 per share, valuing the transaction at approximately $151 million, expected to close in Q1 2025 [1] - Singular Genomics Systems, Inc. will be acquired by an affiliate of Deerfield Management Company, L.P. in an all-cash transaction for $20.00 per share, resulting in Singular Genomics becoming a private company [2] - Liberty Broadband Corporation has a definitive agreement with Charter Communications, where Liberty Broadband shareholders will receive 0.236 Charter shares per share owned [2] - Vacasa, Inc. has a merger agreement with Casago in a cash deal worth $110.56 million, with Casago acquiring all outstanding shares of Vacasa for $5.02 per share, representing a 31.76% premium from the last close [3] Shareholder Engagement - Kuehn Law, PLLC is investigating potential claims related to the proposed mergers, focusing on whether the Boards acted to maximize shareholder value, failed to disclose material information, and conducted a fair process [1] - Shareholders are encouraged to get involved to safeguard their interests, with Kuehn Law covering all case costs and not charging investor clients [4]

Core Viewpoint - Charter Communications has agreed to acquire Liberty Broadband, a strategic move by John Malone, which is expected to enhance shareholder value and liquidity for both companies [1][8]. Group 1: Acquisition Details - Each holder of Liberty Broadband common stock will receive 0.236 shares of Charter common stock for each share of Liberty Broadband held [2]. - Holders of Liberty Broadband preferred stock will receive newly issued Charter preferred stock that mirrors the current terms of Liberty Broadband's preferred stock [3]. - Liberty Broadband's main assets include approximately 45.6 million common shares of Charter and its subsidiary GCI, which will be spun off to Liberty Broadband's stockholders before the acquisition closes [4]. Group 2: Financial Implications - The deal involves the repayment or assumption of Liberty Broadband's $2.6 billion debt (excluding GCI debt) and $180 million of preferred equity that will convert to Charter preferred equity [7]. - Charter expects to retire about 45.6 million shares currently owned by Liberty Broadband and issue approximately 34 million shares to Liberty Broadband common stockholders, resulting in a net decrease of about 11.5 million Charter shares outstanding [6]. Group 3: Tax Considerations - The GCI distribution is expected to be taxable, with Charter bearing the corporate tax liability upon completion of the acquisition, subject to a tax receivables agreement for any excess tax liability over $420 million [5]. Group 4: Strategic Outlook - Charter's CEO expressed gratitude for the partnership with Liberty Broadband and highlighted the potential for value creation under the leadership of Chris Winfrey [8]. - John Malone indicated that the deal would address Liberty Broadband's trading discount and enhance liquidity for shareholders, projecting a closing date in 2027 [8].

Financial Performance - Liberty Broadband reported a fair value of its investment in Charter at $14.8 billion as of September 30, 2024[1]. - GCI's revenue increased by 9% year-over-year to $262 million in Q3 2024, with operating income rising 40% to $42 million[10]. - Liberty Broadband's revenue for the three months ended September 30, 2024, was $262 million, an increase from $240 million in the same period of 2023, representing an 9.2% growth[26]. - Adjusted OIBDA for Liberty Broadband increased to $93 million in Q3 2024 from $85 million in Q3 2023, reflecting a growth of 9.4%[22]. - GCI Holdings' Adjusted OIBDA rose to $100 million in Q3 2024, up from $89 million in Q3 2023, marking an increase of 12.4%[20]. - Net earnings attributable to Liberty Broadband shareholders for Q3 2024 were $142 million, compared to $162 million in Q3 2023, indicating a decrease of 12.3%[26]. - Liberty Broadband's operating income for Q3 2024 was $30 million, up from $21 million in Q3 2023, representing a growth of 42.9%[26]. Cash and Debt Management - Total cash for Liberty Broadband increased by $95 million in Q3 2024, primarily due to proceeds from Charter share sales[7]. - Liberty Broadband's total debt remained relatively flat at $3.725 billion as of September 30, 2024[8]. - Liberty Broadband's long-term debt as of September 30, 2024, was $3.709 billion, slightly down from $3.733 billion at the end of 2023[24]. - The company incurred interest expense of $46 million in Q3 2024, down from $54 million in Q3 2023, a decrease of 14.8%[26]. Equity and Assets - Liberty Broadband has approximately $1.7 billion remaining in its stock repurchase authorization as of October 31, 2024[2]. - Total assets for Liberty Broadband as of September 30, 2024, were $16.303 billion, up from $15.641 billion at the end of 2023, reflecting a growth of 4.2%[24]. - The company reported a total stockholders' equity of $9.520 billion as of September 30, 2024, compared to $9.003 billion at the end of 2023, an increase of 5.7%[25]. GCI Specifics - Adjusted OIBDA for GCI grew 12% to $100 million, reflecting a margin increase of 110 basis points to 38.2%[10]. - Consumer revenue for GCI increased by 2% to $116 million, while business revenue surged 16% to $146 million[10]. - GCI's capital expenditures for Q3 2024 were $39 million, focused on improvements to wireless and data networks in rural Alaska[12]. - GCI's leverage ratio was reported at 3.1x as of September 30, 2024, with undrawn capacity of $367 million in its credit facility[8]. Share Transactions - Liberty Broadband received $74 million from the sale of 225,000 Charter shares, maintaining a 26% fully diluted equity interest in Charter[1][3].

Financial Performance - GCI Holdings reported revenue of $262 million for Q3 2024, an increase of $22 million compared to Q3 2023, and $753 million for the nine months ended September 30, 2024, up from $731 million in the same period last year [123][124]. - Operating income for GCI Holdings increased to $42 million in Q3 2024 from $30 million in Q3 2023, and for the nine months, it rose to $109 million from $91 million [123][125]. - Adjusted OIBDA for GCI Holdings was $100 million in Q3 2024, up from $89 million in Q3 2023, and $276 million for the nine months, compared to $271 million in the prior year [123][127]. - Charter's revenue increased by $211 million and $263 million for the three and nine months ended September 30, 2024, respectively, driven by growth in mobile lines, average revenue per customer, and advertising sales [135]. - Operating income for the three months ended September 30, 2024, was $3,335 million, an increase from $3,126 million in the prior year, while for the nine months, it rose to $9,729 million from $9,292 million [135]. - Net income for the three months ended September 30, 2024, was $1,474 million, compared to $1,436 million in the prior year, while for the nine months, it increased to $4,177 million from $4,032 million [135]. - Total revenue for the nine months ended September 30, 2024, was $753 million, an increase from $731 million in 2023, with adjusted OIBDA rising to $276 million from $271 million [161][162]. Customer Trends - Charter lost 110,000 Internet customers in Q3 2024 but added 545,000 mobile lines, indicating a shift in customer demand [117]. - Charter's mobile line growth was supported by new offerings such as Spectrum One and Anytime Upgrade, enhancing customer retention and service flexibility [118]. - Consumer data revenue increased by $2 million and $4 million for the three and nine months ended September 30, 2024, respectively, driven by higher recurring monthly charges [164]. - Business data revenue rose by $20 million and $25 million for the three and nine months ended September 30, 2024, respectively, primarily due to increased sales to healthcare and education customers [167]. Operating Expenses - Operating expenses increased by $5 million and $8 million for the three and nine months ended September 30, 2024, respectively, mainly due to higher distribution costs [170]. - Selling, general, and administrative expenses rose by $6 million and $9 million for the three and nine months ended September 30, 2024, respectively, primarily due to increased labor-related costs [171]. - Other expenses, net increased by $134 million and $200 million for the three and nine months ended September 30, 2024, respectively, primarily due to increased interest expense and losses on financial instruments [140]. Debt and Liquidity - As of September 30, 2024, GCI Holdings had variable rate debt of $427 million with a weighted average interest rate of 7.0% and fixed rate debt of $600 million with a weighted average interest rate of 4.8% [177]. - The company expects corporate cash and other available sources of liquidity to cover corporate expenses for the foreseeable future [156]. - GCI Holdings is in compliance with all debt maintenance covenants as of September 30, 2024 [157]. Economic and Regulatory Environment - The Alaska economy's dependence on the oil industry poses risks to GCI Holdings, particularly in the face of potential recessionary pressures and inflation [111]. - GCI Holdings is closely monitoring inflation-sensitive costs, which could impact margins if not offset by pricing adjustments or cost reductions [113]. - The company continues to face uncertainties related to regulatory changes affecting USF programs, which could materially impact revenue and accounts receivable [114]. Cash Flow and Investments - Cash flow from operating activities provided $103 million for the nine months ended September 30, 2024, compared to a use of $46 million in the prior year, driven by increased operating income [152]. - For the nine months ended September 30, 2024, net cash flows from investing activities included capital expenditures of $183 million, compared to $149 million in 2023, with a net outflow offset by the sale of Charter Class A common stock for $226 million in 2024 and $42 million in 2023 [153]. - During the same period, net cash flows used in financing activities were approximately $300 million for repurchasing 3.125% Debentures due 2053 and net repayments of approximately $670 million on the Margin Loan Agreement, partially offset by the issuance of $860 million in 3.125% Exchangeable Senior Debentures due 2054 [154]. Interest and Tax - Interest expense decreased by $8 million and $2 million during the three and nine months ended September 30, 2024, respectively, due to lower amounts outstanding on the Margin Loan Facility and lower interest rates [131]. - The effective income tax rate for the three and nine months ended September 30, 2024, was 22%, consistent with the prior year for the three months and slightly lower than 23% for the nine months [145].