X0508 4 2025-07-14 0001611983 Liberty Broadband Corp LBRDK 0000937797 MALONE JOHN C 12300 LIBERTY BLVD. ENGLEWOOD CO 80112 1 1 0 Series B Common Stock 2025-07-14 4 D 0 1617040.0000 0 D 58184.0000 D Series C Common Stock 2025-07-14 4 A 0 1617040.0000 0 A 6746933.0000 D Series B Common Stock 122649.0000 I John C. Malone June 2003 Charitable Remainder Unitrust Series B Common Stock 57641.0000 I Leslie A. Malone 1995 Revocable Trust Series C Common Stock 357106.0000 I Leslie A. Malone 1995 Revocable Trust Series C Common Stock 213332.0000 I Malone LG 2013 Charitable Remainder Unitrust Each share of Series B Common Stock is convertible, at the holder's election, into one share of Series A Common Stock, at any time for no consideration other than the surrender of the share of Series B Common Stock for each share of Series A Common Stock. On July 14, 2025, the Issuer distributed (the "Distribution") .20 of a share of GCI Liberty, Inc.'s Series A, B and C GCI Group Common Stock to holders of the Issuer's Series A, B and C Common Stock, respectively, for each applicable whole share of the Issuer's Series A, B and C Common Stock owned by such holders of record on the record date for the Distribution, with cash (with no interest) paid in lieu of fractional shares. In connection with the Distribution, on July 14, 2025, pursuant to the terms of that certain Exchange Side Letter, dated as of November 12, 2024, by and among the Issuer, Mr. Malone and certain affiliated trusts (collectively, the "Malone exchange group"), 1,617,040 shares of the Issuer's Series B Common Stock were exchanged by the Malone exchange group for 1,617,040 shares of the Issuer's Series C Common Stock. The reporting person disclaims beneficial ownership of these shares owned by his spouse. The transactions described above were approved by the Issuer's board of directors pursuant to Rule 16b-3 under the Securities Exchange Act of 1934, as amended. /s/ Brittany A. Uthoff as Attorney-in-Fact for John C. Malone 2025-07-16