X0407 4 2023-05-11 0001611983 Liberty Broadband Corp LBRDA 0001663090 Wendling Brian J 12300 LIBERTY BLVD. ENGLEWOOD CO 80112 1 CAO/PFO 0 Series C Common Stock 2023-05-11 4 M 0 6419.0000 67.5400 A 18693.0000 D Series C Common Stock 2023-05-11 4 S 0 6419.0000 77.5921 D 12274.0000 D Stock Option - LBRDK (Right to Buy) 67.5400 2023-05-11 4 M 0 6419.0000 0.0000 D 2023-05-12 Series C Common Stock 6419.0000 0.0000 D This option exercise and subsequent open market sale were made pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on December 14, 2022 in accordance with Rule 10b5-1 of the Securities Exchange Act of 1934, as amended. The price is a weighted average price. These shares were sold in multiple transactions ranging from $77.14 to $78.04, inclusive. The reporting person undertakes to provide to the Securities and Exchange Commission, the Issuer, or any security holder of the Issuer, upon request, full information regarding the number of shares sold at each separate price within the range. The derivative security is fully vested. /s/ Brittany A. Uthoff as Attorney-in-Fact for Brian J. Wendling 2023-05-15