GLIBA

SEC source: 0001225208-25-009867 · doc4.xml · derivative · entry 1

Gould Jedd · CIK 0002096858 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 21,985

Underlying: Series C GCI Group Common Stock · 21,985 shares

Expires 2030-12-09

SEC source: 0001225208-25-009866 · doc4.xml · derivative · entry 1

DEEVY BRIAN · CIK 0001442360 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 24,970

Underlying: Series C GCI Group Common Stock · 24,970 shares

Expires 2030-12-09

SEC source: 0001225208-25-009837 · doc4.xml · derivative · entry 4

Green Richard R · CIK 0001452212 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 478

Underlying: Series C GCI Group Common Stock · 83 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · security: The rights offering is subject to termination or extension by the Issuer at any time prior to consummation.

F3 · derivative.exercise_date: The rights offering commenced on November 26, 2025.

F4 · derivative.expiration_date: The rights offering will expire at 5:00 p.m., New York City time, on December 17, 2025 unless extended by the Issuer.

SEC source: 0001225208-25-009837 · doc4.xml · nonDerivative · entry 1

Green Richard R · CIK 0001452212 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,543

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0001225208-25-009280 · doc4.xml · nonDerivative · entry 1

Gould Jedd · CIK 0002096858 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 15,051

F1 · price: The price is a weighted average price. These shares were purchased in multiple transactions ranging from $33.84 to $34.20, 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 purchased at each separate price within the range.

SEC source: 0001225208-25-008158 · doc4.xml · nonDerivative · entry 1

MALONE JOHN C · CIK 0000937797 · Director · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,221,358

F1 · price: The price is a weighted average price. These shares were purchased in multiple transactions ranging from $34.995 to $35.000, inclusive. The reporting person undertakes to provide to the Securities and ExchangeCommission, the Issuer, or any security holder of the Issuer, upon request, full information regarding the number of shares purchased at each separate price within the range.

SEC source: 0001225208-25-008129 · doc4.xml · nonDerivative · entry 2

MALONE JOHN C · CIK 0000937797 · Director · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,220,595

SEC source: 0001225208-25-008129 · doc4.xml · nonDerivative · entry 1

MALONE JOHN C · CIK 0000937797 · Director · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,219,001

SEC source: 0001225208-25-008114 · doc4.xml · nonDerivative · entry 2

MALONE JOHN C · CIK 0000937797 · Director · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,218,276

F2 · price: The price is a weighted average price. These shares were purchased in multiple transactions ranging from $34.920 to $35.000, 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 purchased at each separate price within the range.

SEC source: 0001225208-25-008114 · doc4.xml · nonDerivative · entry 1

MALONE JOHN C · CIK 0000937797 · Director · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,216,098

F1 · price: The price is a weighted average price. These shares were purchased in multiple transactions ranging from $34.970 to $35.000, 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 purchased at each separate price within the range.

SEC source: 0001225208-25-008035 · doc4.xml · nonDerivative · entry 3

MALONE JOHN C · CIK 0000937797 · Director · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,208,006

F3 · price: The price is a weighted average price. These shares were purchased in multiple transactions ranging from $34.920 to $35.000, inclusive. The reporting person undertakes to provide to the Securities and ExchangeCommission, the Issuer, or any security holder of the Issuer, upon request, full information regarding the number of shares purchased at each separate price within the range.

SEC source: 0001225208-25-008035 · doc4.xml · nonDerivative · entry 2

MALONE JOHN C · CIK 0000937797 · Director · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,165,836

F2 · price: The price is a weighted average price. These shares were purchased in multiple transactions ranging from $34.870 to $34.955, 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 purchased at each separate price within the range.

SEC source: 0001225208-25-008035 · doc4.xml · nonDerivative · entry 1

MALONE JOHN C · CIK 0000937797 · Director · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,163,608

F1 · price: The price is a weighted average price. These shares were purchased in multiple transactions ranging from $34.950 to $35.000, 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 purchased at each separate price within the range.

SEC source: 0001225208-25-007865 · doc4.xml · nonDerivative · entry 3

MALONE JOHN C · CIK 0000937797 · Director · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,158,108

F1 · price: The price is a weighted average price. These shares were purchased in multiple transactions ranging from $35.965 to $36.000, 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 purchased at each separate price within the range.

SEC source: 0001225208-25-007865 · doc4.xml · nonDerivative · entry 2

MALONE JOHN C · CIK 0000937797 · Director · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 314,883

SEC source: 0001225208-25-007865 · doc4.xml · nonDerivative · entry 1

MALONE JOHN C · CIK 0000937797 · Director · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,144,310

SEC source: 0001225208-25-007761 · doc4.xml · nonDerivative · entry 2

MALONE JOHN C · CIK 0000937797 · Director · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,144,239

SEC source: 0001225208-25-007761 · doc4.xml · nonDerivative · entry 1

MALONE JOHN C · CIK 0000937797 · Director · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,141,539

SEC source: 0001225208-25-007453 · doc4.xml · derivative · entry 1

DUNCAN RONALD A · CIK 0000905853 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 814,441

Underlying: Series C GCI Group Common Stock · 814,441 shares

Expires 2030-08-21

F1 · shares: This grant is made pursuant to the employment agreement between the Reporting Person and the Issuer, entered into as of August 22, 2025 and effective as of July 15, 2025.

F2 · derivative.exercise_date: This option award vests in three substantially equal installments on December 31, 2026, 2027, and 2028.

SEC source: 0001225208-25-007450 · doc4.xml · derivative · entry 1

ROMRELL LARRY E · CIK 0001120556 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 10,859

Underlying: Series C GCI Group Common Stock · 10,859 shares

Expires 2030-08-21

SEC source: 0001225208-25-007452 · doc4.xml · derivative · entry 1

DEEVY BRIAN · CIK 0001442360 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 11,085

Underlying: Series C GCI Group Common Stock · 11,085 shares

Expires 2030-08-21

SEC source: 0001225208-25-007451 · doc4.xml · derivative · entry 1

Green Richard R · CIK 0001452212 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 10,406

Underlying: Series C GCI Group Common Stock · 10,406 shares

Expires 2030-08-21

SEC source: 0001225208-25-007454 · doc4.xml · nonDerivative · entry 1

MALONE JOHN C · CIK 0000937797 · Director · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,140,539

F1 · price: The price is a weighted average price. These shares were purchased in multiple transactions ranging from $35.895 to $36.000, 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 purchased at each separate price within the range.

SEC source: 0001225208-25-007397 · doc4.xml · nonDerivative · entry 7

MALONE JOHN C · CIK 0000937797 · Director · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,124,386

F7 · price: The price is a weighted average price. These shares were purchased in multiple transactions ranging from $35.565 to $36.000, 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 purchased at each separate price within the range.

SEC source: 0001225208-25-007397 · doc4.xml · nonDerivative · entry 6

MALONE JOHN C · CIK 0000937797 · Director · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 314,583

F6 · price: The price is a weighted average price. These shares were purchased in multiple transactions ranging from $35.680 to $36.000, 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 purchased at each separate price within the range.

SEC source: 0001225208-25-007397 · doc4.xml · nonDerivative · entry 5

MALONE JOHN C · CIK 0000937797 · Director · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,081,781

F5 · price: The price is a weighted average price. These shares were purchased in multiple transactions ranging from $35.590 to $36.000, 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 purchased at each separate price within the range.

SEC source: 0001225208-25-007397 · doc4.xml · nonDerivative · entry 4

MALONE JOHN C · CIK 0000937797 · Director · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 309,739

F4 · price: The price is a weighted average price. These shares were purchased in multiple transactions ranging from $35.770 to $36.000, 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 purchased at each separate price within the range.

SEC source: 0001225208-25-007397 · doc4.xml · nonDerivative · entry 3

MALONE JOHN C · CIK 0000937797 · Director · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,052,225

F3 · price: The price is a weighted average price. These shares were purchased in multiple transactions ranging from $35.450 to $36.000, 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 purchased at each separate price within the range.

SEC source: 0001225208-25-007397 · doc4.xml · nonDerivative · entry 2

MALONE JOHN C · CIK 0000937797 · Director · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 308,051

F2 · price: The price is a weighted average price. These shares were purchased in multiple transactions ranging from $34.590 to $35.555, 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 purchased at each separate price within the range.

SEC source: 0001225208-25-007397 · doc4.xml · nonDerivative · entry 1

MALONE JOHN C · CIK 0000937797 · Director · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 297,198

F1 · price: The price is a weighted average price. These shares were purchased in multiple transactions ranging from $35.610 to $36.000, 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 purchased at each separate price within the range.

SEC source: 0001225208-25-006744 · doc4.xml · derivative · entry 1

DUNCAN RONALD A · CIK 0000905853 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 7,035

Underlying: Series C GCI Group Common Stock · 7,035 shares

Expires 2026-01-05

F1 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of Series C GCI Group Common Stock.

F2 · kind: On July 14, 2025, Liberty Broadband Corporation completed the spin-off of the Issuer (the "Spin-Off"), which was effected by the distribution to each holder of its common stock as of 5:00 p.m., New York City time, on June 30, 2025, of 0.20 of a share of the Issuer's Series A, Series B and Series C GCI Group common stock for each whole share of the corresponding series of Liberty Broadband Corporation's common stock, with cash (with no interest) paid in lieu of fractional shares. In connection with the Spin-Off, all restricted stock unit awards held by the Reporting Person in Liberty Broadband Corporation Series C Common Stock (the "Liberty Broadband restricted stock units") were converted into restricted stock unit awards of the Issuer in the Issuer's Series C GCI Group Common Stock (the "Issuer restricted stock units") as further described in the Remarks.

F2 · price: On July 14, 2025, Liberty Broadband Corporation completed the spin-off of the Issuer (the "Spin-Off"), which was effected by the distribution to each holder of its common stock as of 5:00 p.m., New York City time, on June 30, 2025, of 0.20 of a share of the Issuer's Series A, Series B and Series C GCI Group common stock for each whole share of the corresponding series of Liberty Broadband Corporation's common stock, with cash (with no interest) paid in lieu of fractional shares. In connection with the Spin-Off, all restricted stock unit awards held by the Reporting Person in Liberty Broadband Corporation Series C Common Stock (the "Liberty Broadband restricted stock units") were converted into restricted stock unit awards of the Issuer in the Issuer's Series C GCI Group Common Stock (the "Issuer restricted stock units") as further described in the Remarks.

SEC source: 0001104659-25-080409 · tm2523904-1_4seq1.xml · derivative · entry 4

MALONE JOHN C · CIK 0000937797 · Director · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 80,000

Underlying: Series C GCI Group Common Stock · 80,000 shares

Expires not disclosed

F3 · kind: As previously disclosed by the Reporting Person, on September 14, 2021, the Reporting Person entered into a "zero-cost collar" arrangement (the "2021 Transaction"), as amended on March 29, 2023, pursuant to which he wrote European call options and purchased European put options referencing shares of the Series C common stock of Liberty Broadband Corporation. In connection with the Spin-Off, the dealer counterparty to the 2021 Transaction adjusted such transaction pursuant to its terms to cause the Reporting Person to be automatically deemed to have entered into the same "zero-cost collar" arrangement with respect to 80,000 shares of the Issuer's Series C GCI Group Common Stock (the "2021 Adjusted Transaction"). Consistent with the 2021 Transaction, only one of the options can be in the money on the expiration date, at which time the in-the-money options will be exercised, and the other options will expire.

F4 · kind: If neither the put options nor the call options are in the money on the expiration date, both the put and call options will expire. The 2021 Adjusted Transaction will be settled in cash unless the Reporting Person elects physical settlement.

F3 · price: As previously disclosed by the Reporting Person, on September 14, 2021, the Reporting Person entered into a "zero-cost collar" arrangement (the "2021 Transaction"), as amended on March 29, 2023, pursuant to which he wrote European call options and purchased European put options referencing shares of the Series C common stock of Liberty Broadband Corporation. In connection with the Spin-Off, the dealer counterparty to the 2021 Transaction adjusted such transaction pursuant to its terms to cause the Reporting Person to be automatically deemed to have entered into the same "zero-cost collar" arrangement with respect to 80,000 shares of the Issuer's Series C GCI Group Common Stock (the "2021 Adjusted Transaction"). Consistent with the 2021 Transaction, only one of the options can be in the money on the expiration date, at which time the in-the-money options will be exercised, and the other options will expire.

F4 · price: If neither the put options nor the call options are in the money on the expiration date, both the put and call options will expire. The 2021 Adjusted Transaction will be settled in cash unless the Reporting Person elects physical settlement.

F6 · price: The 2021 Adjusted Transaction is divided into 5 components, each of which are with respect to 16,000 shares of Series C GCI Group Common Stock, maturing on sequential trading days over the period beginning on August 21, 2028 and ending on August 25, 2028.

F7 · price: Because the 2019 Adjusted Transaction and the 2021 Adjusted Transaction occurred automatically by operation of the terms of the 2019 Transaction and the 2021 Transaction, respectively, the Reporting Person did not provide or receive any consideration in respect of either transaction.

F3 · derivative.exercise_date: As previously disclosed by the Reporting Person, on September 14, 2021, the Reporting Person entered into a "zero-cost collar" arrangement (the "2021 Transaction"), as amended on March 29, 2023, pursuant to which he wrote European call options and purchased European put options referencing shares of the Series C common stock of Liberty Broadband Corporation. In connection with the Spin-Off, the dealer counterparty to the 2021 Transaction adjusted such transaction pursuant to its terms to cause the Reporting Person to be automatically deemed to have entered into the same "zero-cost collar" arrangement with respect to 80,000 shares of the Issuer's Series C GCI Group Common Stock (the "2021 Adjusted Transaction"). Consistent with the 2021 Transaction, only one of the options can be in the money on the expiration date, at which time the in-the-money options will be exercised, and the other options will expire.

F4 · derivative.exercise_date: If neither the put options nor the call options are in the money on the expiration date, both the put and call options will expire. The 2021 Adjusted Transaction will be settled in cash unless the Reporting Person elects physical settlement.

F6 · derivative.exercise_date: The 2021 Adjusted Transaction is divided into 5 components, each of which are with respect to 16,000 shares of Series C GCI Group Common Stock, maturing on sequential trading days over the period beginning on August 21, 2028 and ending on August 25, 2028.

F3 · derivative.expiration_date: As previously disclosed by the Reporting Person, on September 14, 2021, the Reporting Person entered into a "zero-cost collar" arrangement (the "2021 Transaction"), as amended on March 29, 2023, pursuant to which he wrote European call options and purchased European put options referencing shares of the Series C common stock of Liberty Broadband Corporation. In connection with the Spin-Off, the dealer counterparty to the 2021 Transaction adjusted such transaction pursuant to its terms to cause the Reporting Person to be automatically deemed to have entered into the same "zero-cost collar" arrangement with respect to 80,000 shares of the Issuer's Series C GCI Group Common Stock (the "2021 Adjusted Transaction"). Consistent with the 2021 Transaction, only one of the options can be in the money on the expiration date, at which time the in-the-money options will be exercised, and the other options will expire.

F4 · derivative.expiration_date: If neither the put options nor the call options are in the money on the expiration date, both the put and call options will expire. The 2021 Adjusted Transaction will be settled in cash unless the Reporting Person elects physical settlement.

F6 · derivative.expiration_date: The 2021 Adjusted Transaction is divided into 5 components, each of which are with respect to 16,000 shares of Series C GCI Group Common Stock, maturing on sequential trading days over the period beginning on August 21, 2028 and ending on August 25, 2028.

SEC source: 0001104659-25-080409 · tm2523904-1_4seq1.xml · derivative · entry 3

MALONE JOHN C · CIK 0000937797 · Director · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 80,000

Underlying: Series C GCI Group Common Stock · 80,000 shares

Expires not disclosed

F3 · kind: As previously disclosed by the Reporting Person, on September 14, 2021, the Reporting Person entered into a "zero-cost collar" arrangement (the "2021 Transaction"), as amended on March 29, 2023, pursuant to which he wrote European call options and purchased European put options referencing shares of the Series C common stock of Liberty Broadband Corporation. In connection with the Spin-Off, the dealer counterparty to the 2021 Transaction adjusted such transaction pursuant to its terms to cause the Reporting Person to be automatically deemed to have entered into the same "zero-cost collar" arrangement with respect to 80,000 shares of the Issuer's Series C GCI Group Common Stock (the "2021 Adjusted Transaction"). Consistent with the 2021 Transaction, only one of the options can be in the money on the expiration date, at which time the in-the-money options will be exercised, and the other options will expire.

F4 · kind: If neither the put options nor the call options are in the money on the expiration date, both the put and call options will expire. The 2021 Adjusted Transaction will be settled in cash unless the Reporting Person elects physical settlement.

F3 · price: As previously disclosed by the Reporting Person, on September 14, 2021, the Reporting Person entered into a "zero-cost collar" arrangement (the "2021 Transaction"), as amended on March 29, 2023, pursuant to which he wrote European call options and purchased European put options referencing shares of the Series C common stock of Liberty Broadband Corporation. In connection with the Spin-Off, the dealer counterparty to the 2021 Transaction adjusted such transaction pursuant to its terms to cause the Reporting Person to be automatically deemed to have entered into the same "zero-cost collar" arrangement with respect to 80,000 shares of the Issuer's Series C GCI Group Common Stock (the "2021 Adjusted Transaction"). Consistent with the 2021 Transaction, only one of the options can be in the money on the expiration date, at which time the in-the-money options will be exercised, and the other options will expire.

F4 · price: If neither the put options nor the call options are in the money on the expiration date, both the put and call options will expire. The 2021 Adjusted Transaction will be settled in cash unless the Reporting Person elects physical settlement.

F6 · price: The 2021 Adjusted Transaction is divided into 5 components, each of which are with respect to 16,000 shares of Series C GCI Group Common Stock, maturing on sequential trading days over the period beginning on August 21, 2028 and ending on August 25, 2028.

F7 · price: Because the 2019 Adjusted Transaction and the 2021 Adjusted Transaction occurred automatically by operation of the terms of the 2019 Transaction and the 2021 Transaction, respectively, the Reporting Person did not provide or receive any consideration in respect of either transaction.

F3 · derivative.exercise_date: As previously disclosed by the Reporting Person, on September 14, 2021, the Reporting Person entered into a "zero-cost collar" arrangement (the "2021 Transaction"), as amended on March 29, 2023, pursuant to which he wrote European call options and purchased European put options referencing shares of the Series C common stock of Liberty Broadband Corporation. In connection with the Spin-Off, the dealer counterparty to the 2021 Transaction adjusted such transaction pursuant to its terms to cause the Reporting Person to be automatically deemed to have entered into the same "zero-cost collar" arrangement with respect to 80,000 shares of the Issuer's Series C GCI Group Common Stock (the "2021 Adjusted Transaction"). Consistent with the 2021 Transaction, only one of the options can be in the money on the expiration date, at which time the in-the-money options will be exercised, and the other options will expire.

F4 · derivative.exercise_date: If neither the put options nor the call options are in the money on the expiration date, both the put and call options will expire. The 2021 Adjusted Transaction will be settled in cash unless the Reporting Person elects physical settlement.

F6 · derivative.exercise_date: The 2021 Adjusted Transaction is divided into 5 components, each of which are with respect to 16,000 shares of Series C GCI Group Common Stock, maturing on sequential trading days over the period beginning on August 21, 2028 and ending on August 25, 2028.

F3 · derivative.expiration_date: As previously disclosed by the Reporting Person, on September 14, 2021, the Reporting Person entered into a "zero-cost collar" arrangement (the "2021 Transaction"), as amended on March 29, 2023, pursuant to which he wrote European call options and purchased European put options referencing shares of the Series C common stock of Liberty Broadband Corporation. In connection with the Spin-Off, the dealer counterparty to the 2021 Transaction adjusted such transaction pursuant to its terms to cause the Reporting Person to be automatically deemed to have entered into the same "zero-cost collar" arrangement with respect to 80,000 shares of the Issuer's Series C GCI Group Common Stock (the "2021 Adjusted Transaction"). Consistent with the 2021 Transaction, only one of the options can be in the money on the expiration date, at which time the in-the-money options will be exercised, and the other options will expire.

F4 · derivative.expiration_date: If neither the put options nor the call options are in the money on the expiration date, both the put and call options will expire. The 2021 Adjusted Transaction will be settled in cash unless the Reporting Person elects physical settlement.

F6 · derivative.expiration_date: The 2021 Adjusted Transaction is divided into 5 components, each of which are with respect to 16,000 shares of Series C GCI Group Common Stock, maturing on sequential trading days over the period beginning on August 21, 2028 and ending on August 25, 2028.

SEC source: 0001104659-25-080409 · tm2523904-1_4seq1.xml · derivative · entry 2

MALONE JOHN C · CIK 0000937797 · Director · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 200,000

Underlying: Series C GCI Group Common Stock · 200,000 shares

Expires not disclosed

F1 · kind: As previously disclosed by the Reporting Person, on September 12, 2019, the Reporting Person entered into a "zero-cost collar" arrangement (the "2019 Transaction") pursuant to which he wrote European call options and purchased European put options referencing shares of the Series C common stock of Liberty Broadband Corporation. In connection with the spin-off (the "Spin-Off") of the Issuer from Liberty Broadband Corporation, the dealer counterparty to the 2019 Transaction adjusted such transaction pursuant to its terms to cause the Reporting Person to be automatically deemed to have entered into the same "zero-cost collar" arrangement with respect to 200,000 shares of the Issuer's Series C GCI Group Common Stock (the "2019 Adjusted Transaction"). Consistent with the 2019 Transaction, only one of the options can be in the money on the expiration date, at which time the in-the-money options will be exercised, and the other options will expire.

F2 · kind: If neither the put options nor the call options are in the money on the expiration date, both the put and call options will expire. The 2019 Adjusted Transaction will be settled in cash unless the Reporting Person elects physical settlement.

F1 · price: As previously disclosed by the Reporting Person, on September 12, 2019, the Reporting Person entered into a "zero-cost collar" arrangement (the "2019 Transaction") pursuant to which he wrote European call options and purchased European put options referencing shares of the Series C common stock of Liberty Broadband Corporation. In connection with the spin-off (the "Spin-Off") of the Issuer from Liberty Broadband Corporation, the dealer counterparty to the 2019 Transaction adjusted such transaction pursuant to its terms to cause the Reporting Person to be automatically deemed to have entered into the same "zero-cost collar" arrangement with respect to 200,000 shares of the Issuer's Series C GCI Group Common Stock (the "2019 Adjusted Transaction"). Consistent with the 2019 Transaction, only one of the options can be in the money on the expiration date, at which time the in-the-money options will be exercised, and the other options will expire.

F2 · price: If neither the put options nor the call options are in the money on the expiration date, both the put and call options will expire. The 2019 Adjusted Transaction will be settled in cash unless the Reporting Person elects physical settlement.

F5 · price: The 2019 Adjusted Transaction is divided into 15 components, the first 5 of which are with respect to 13,200 shares of Series C GCI Group Common Stock and the last 10 of which are with respect to 13,400 shares, maturing on sequential trading days over the period beginning on August 18, 2026 and ending on September 8, 2026.

F7 · price: Because the 2019 Adjusted Transaction and the 2021 Adjusted Transaction occurred automatically by operation of the terms of the 2019 Transaction and the 2021 Transaction, respectively, the Reporting Person did not provide or receive any consideration in respect of either transaction.

F1 · derivative.exercise_date: As previously disclosed by the Reporting Person, on September 12, 2019, the Reporting Person entered into a "zero-cost collar" arrangement (the "2019 Transaction") pursuant to which he wrote European call options and purchased European put options referencing shares of the Series C common stock of Liberty Broadband Corporation. In connection with the spin-off (the "Spin-Off") of the Issuer from Liberty Broadband Corporation, the dealer counterparty to the 2019 Transaction adjusted such transaction pursuant to its terms to cause the Reporting Person to be automatically deemed to have entered into the same "zero-cost collar" arrangement with respect to 200,000 shares of the Issuer's Series C GCI Group Common Stock (the "2019 Adjusted Transaction"). Consistent with the 2019 Transaction, only one of the options can be in the money on the expiration date, at which time the in-the-money options will be exercised, and the other options will expire.

F2 · derivative.exercise_date: If neither the put options nor the call options are in the money on the expiration date, both the put and call options will expire. The 2019 Adjusted Transaction will be settled in cash unless the Reporting Person elects physical settlement.

F5 · derivative.exercise_date: The 2019 Adjusted Transaction is divided into 15 components, the first 5 of which are with respect to 13,200 shares of Series C GCI Group Common Stock and the last 10 of which are with respect to 13,400 shares, maturing on sequential trading days over the period beginning on August 18, 2026 and ending on September 8, 2026.

F1 · derivative.expiration_date: As previously disclosed by the Reporting Person, on September 12, 2019, the Reporting Person entered into a "zero-cost collar" arrangement (the "2019 Transaction") pursuant to which he wrote European call options and purchased European put options referencing shares of the Series C common stock of Liberty Broadband Corporation. In connection with the spin-off (the "Spin-Off") of the Issuer from Liberty Broadband Corporation, the dealer counterparty to the 2019 Transaction adjusted such transaction pursuant to its terms to cause the Reporting Person to be automatically deemed to have entered into the same "zero-cost collar" arrangement with respect to 200,000 shares of the Issuer's Series C GCI Group Common Stock (the "2019 Adjusted Transaction"). Consistent with the 2019 Transaction, only one of the options can be in the money on the expiration date, at which time the in-the-money options will be exercised, and the other options will expire.

F2 · derivative.expiration_date: If neither the put options nor the call options are in the money on the expiration date, both the put and call options will expire. The 2019 Adjusted Transaction will be settled in cash unless the Reporting Person elects physical settlement.

F5 · derivative.expiration_date: The 2019 Adjusted Transaction is divided into 15 components, the first 5 of which are with respect to 13,200 shares of Series C GCI Group Common Stock and the last 10 of which are with respect to 13,400 shares, maturing on sequential trading days over the period beginning on August 18, 2026 and ending on September 8, 2026.

SEC source: 0001104659-25-080409 · tm2523904-1_4seq1.xml · derivative · entry 1

MALONE JOHN C · CIK 0000937797 · Director · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 200,000

Underlying: Series C GCI Group Common Stock · 200,000 shares

Expires not disclosed

F1 · kind: As previously disclosed by the Reporting Person, on September 12, 2019, the Reporting Person entered into a "zero-cost collar" arrangement (the "2019 Transaction") pursuant to which he wrote European call options and purchased European put options referencing shares of the Series C common stock of Liberty Broadband Corporation. In connection with the spin-off (the "Spin-Off") of the Issuer from Liberty Broadband Corporation, the dealer counterparty to the 2019 Transaction adjusted such transaction pursuant to its terms to cause the Reporting Person to be automatically deemed to have entered into the same "zero-cost collar" arrangement with respect to 200,000 shares of the Issuer's Series C GCI Group Common Stock (the "2019 Adjusted Transaction"). Consistent with the 2019 Transaction, only one of the options can be in the money on the expiration date, at which time the in-the-money options will be exercised, and the other options will expire.

F2 · kind: If neither the put options nor the call options are in the money on the expiration date, both the put and call options will expire. The 2019 Adjusted Transaction will be settled in cash unless the Reporting Person elects physical settlement.

F1 · price: As previously disclosed by the Reporting Person, on September 12, 2019, the Reporting Person entered into a "zero-cost collar" arrangement (the "2019 Transaction") pursuant to which he wrote European call options and purchased European put options referencing shares of the Series C common stock of Liberty Broadband Corporation. In connection with the spin-off (the "Spin-Off") of the Issuer from Liberty Broadband Corporation, the dealer counterparty to the 2019 Transaction adjusted such transaction pursuant to its terms to cause the Reporting Person to be automatically deemed to have entered into the same "zero-cost collar" arrangement with respect to 200,000 shares of the Issuer's Series C GCI Group Common Stock (the "2019 Adjusted Transaction"). Consistent with the 2019 Transaction, only one of the options can be in the money on the expiration date, at which time the in-the-money options will be exercised, and the other options will expire.

F2 · price: If neither the put options nor the call options are in the money on the expiration date, both the put and call options will expire. The 2019 Adjusted Transaction will be settled in cash unless the Reporting Person elects physical settlement.

F5 · price: The 2019 Adjusted Transaction is divided into 15 components, the first 5 of which are with respect to 13,200 shares of Series C GCI Group Common Stock and the last 10 of which are with respect to 13,400 shares, maturing on sequential trading days over the period beginning on August 18, 2026 and ending on September 8, 2026.

F7 · price: Because the 2019 Adjusted Transaction and the 2021 Adjusted Transaction occurred automatically by operation of the terms of the 2019 Transaction and the 2021 Transaction, respectively, the Reporting Person did not provide or receive any consideration in respect of either transaction.

F1 · derivative.exercise_date: As previously disclosed by the Reporting Person, on September 12, 2019, the Reporting Person entered into a "zero-cost collar" arrangement (the "2019 Transaction") pursuant to which he wrote European call options and purchased European put options referencing shares of the Series C common stock of Liberty Broadband Corporation. In connection with the spin-off (the "Spin-Off") of the Issuer from Liberty Broadband Corporation, the dealer counterparty to the 2019 Transaction adjusted such transaction pursuant to its terms to cause the Reporting Person to be automatically deemed to have entered into the same "zero-cost collar" arrangement with respect to 200,000 shares of the Issuer's Series C GCI Group Common Stock (the "2019 Adjusted Transaction"). Consistent with the 2019 Transaction, only one of the options can be in the money on the expiration date, at which time the in-the-money options will be exercised, and the other options will expire.

F2 · derivative.exercise_date: If neither the put options nor the call options are in the money on the expiration date, both the put and call options will expire. The 2019 Adjusted Transaction will be settled in cash unless the Reporting Person elects physical settlement.

F5 · derivative.exercise_date: The 2019 Adjusted Transaction is divided into 15 components, the first 5 of which are with respect to 13,200 shares of Series C GCI Group Common Stock and the last 10 of which are with respect to 13,400 shares, maturing on sequential trading days over the period beginning on August 18, 2026 and ending on September 8, 2026.

F1 · derivative.expiration_date: As previously disclosed by the Reporting Person, on September 12, 2019, the Reporting Person entered into a "zero-cost collar" arrangement (the "2019 Transaction") pursuant to which he wrote European call options and purchased European put options referencing shares of the Series C common stock of Liberty Broadband Corporation. In connection with the spin-off (the "Spin-Off") of the Issuer from Liberty Broadband Corporation, the dealer counterparty to the 2019 Transaction adjusted such transaction pursuant to its terms to cause the Reporting Person to be automatically deemed to have entered into the same "zero-cost collar" arrangement with respect to 200,000 shares of the Issuer's Series C GCI Group Common Stock (the "2019 Adjusted Transaction"). Consistent with the 2019 Transaction, only one of the options can be in the money on the expiration date, at which time the in-the-money options will be exercised, and the other options will expire.

F2 · derivative.expiration_date: If neither the put options nor the call options are in the money on the expiration date, both the put and call options will expire. The 2019 Adjusted Transaction will be settled in cash unless the Reporting Person elects physical settlement.

F5 · derivative.expiration_date: The 2019 Adjusted Transaction is divided into 15 components, the first 5 of which are with respect to 13,200 shares of Series C GCI Group Common Stock and the last 10 of which are with respect to 13,400 shares, maturing on sequential trading days over the period beginning on August 18, 2026 and ending on September 8, 2026.

SEC source: 0001104659-25-067807 · tm2520149-2_4seq1.xml · nonDerivative · entry 7

Liberty Broadband Corp · CIK 0001611983 · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

F1 · kind: The transactions reported on this Form 4 relate to the spin-off of the Issuer from the Reporting Person effective July 14, 2025. To effect the spin-off, the issued and outstanding common stock of the Issuer, consisting of 1,000 shares of common stock, all of which were held by the Reporting Person, were reclassified into 3,650,938 shares of the Issuer's Series A GCI Group common stock ("GLIBA"), 400,806 shares of the Issuer's Series B GCI Group common stock ("GLIBB"), and 24,646,041 shares of the Issuer's Series C GCI Group common stock ("GLIBK" and, together with GLIBA and GLIBB, "GCI Group Common Stock") (collectively, the "Reclassification").

F2 · kind: Immediately following the Reclassification, in such spin-off, the Reporting Person distributed to holders of record of the Reporting Person's common stock, 0.20 of a share of the corresponding series of GCI Group Common Stock, with cash (without interest) paid in lieu of any fractional shares of GCI Group Common Stock, after aggregating all fractional shares of GCI Group Common Stock, separately by series. As a result of the foregoing transactions, the Issuer was spun-off from the Reporting Person and the Reporting Person ceased to have an equity interest in the Issuer and thus is no longer subject to the obligations of Section 16 of the Securities Exchange Act of 1934.

F2 · price: Immediately following the Reclassification, in such spin-off, the Reporting Person distributed to holders of record of the Reporting Person's common stock, 0.20 of a share of the corresponding series of GCI Group Common Stock, with cash (without interest) paid in lieu of any fractional shares of GCI Group Common Stock, after aggregating all fractional shares of GCI Group Common Stock, separately by series. As a result of the foregoing transactions, the Issuer was spun-off from the Reporting Person and the Reporting Person ceased to have an equity interest in the Issuer and thus is no longer subject to the obligations of Section 16 of the Securities Exchange Act of 1934.

SEC source: 0001104659-25-067807 · tm2520149-2_4seq1.xml · nonDerivative · entry 6

Liberty Broadband Corp · CIK 0001611983 · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

F1 · kind: The transactions reported on this Form 4 relate to the spin-off of the Issuer from the Reporting Person effective July 14, 2025. To effect the spin-off, the issued and outstanding common stock of the Issuer, consisting of 1,000 shares of common stock, all of which were held by the Reporting Person, were reclassified into 3,650,938 shares of the Issuer's Series A GCI Group common stock ("GLIBA"), 400,806 shares of the Issuer's Series B GCI Group common stock ("GLIBB"), and 24,646,041 shares of the Issuer's Series C GCI Group common stock ("GLIBK" and, together with GLIBA and GLIBB, "GCI Group Common Stock") (collectively, the "Reclassification").

F2 · kind: Immediately following the Reclassification, in such spin-off, the Reporting Person distributed to holders of record of the Reporting Person's common stock, 0.20 of a share of the corresponding series of GCI Group Common Stock, with cash (without interest) paid in lieu of any fractional shares of GCI Group Common Stock, after aggregating all fractional shares of GCI Group Common Stock, separately by series. As a result of the foregoing transactions, the Issuer was spun-off from the Reporting Person and the Reporting Person ceased to have an equity interest in the Issuer and thus is no longer subject to the obligations of Section 16 of the Securities Exchange Act of 1934.

F2 · price: Immediately following the Reclassification, in such spin-off, the Reporting Person distributed to holders of record of the Reporting Person's common stock, 0.20 of a share of the corresponding series of GCI Group Common Stock, with cash (without interest) paid in lieu of any fractional shares of GCI Group Common Stock, after aggregating all fractional shares of GCI Group Common Stock, separately by series. As a result of the foregoing transactions, the Issuer was spun-off from the Reporting Person and the Reporting Person ceased to have an equity interest in the Issuer and thus is no longer subject to the obligations of Section 16 of the Securities Exchange Act of 1934.

SEC source: 0001104659-25-067807 · tm2520149-2_4seq1.xml · nonDerivative · entry 5

Liberty Broadband Corp · CIK 0001611983 · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

F1 · kind: The transactions reported on this Form 4 relate to the spin-off of the Issuer from the Reporting Person effective July 14, 2025. To effect the spin-off, the issued and outstanding common stock of the Issuer, consisting of 1,000 shares of common stock, all of which were held by the Reporting Person, were reclassified into 3,650,938 shares of the Issuer's Series A GCI Group common stock ("GLIBA"), 400,806 shares of the Issuer's Series B GCI Group common stock ("GLIBB"), and 24,646,041 shares of the Issuer's Series C GCI Group common stock ("GLIBK" and, together with GLIBA and GLIBB, "GCI Group Common Stock") (collectively, the "Reclassification").

F2 · kind: Immediately following the Reclassification, in such spin-off, the Reporting Person distributed to holders of record of the Reporting Person's common stock, 0.20 of a share of the corresponding series of GCI Group Common Stock, with cash (without interest) paid in lieu of any fractional shares of GCI Group Common Stock, after aggregating all fractional shares of GCI Group Common Stock, separately by series. As a result of the foregoing transactions, the Issuer was spun-off from the Reporting Person and the Reporting Person ceased to have an equity interest in the Issuer and thus is no longer subject to the obligations of Section 16 of the Securities Exchange Act of 1934.

F2 · price: Immediately following the Reclassification, in such spin-off, the Reporting Person distributed to holders of record of the Reporting Person's common stock, 0.20 of a share of the corresponding series of GCI Group Common Stock, with cash (without interest) paid in lieu of any fractional shares of GCI Group Common Stock, after aggregating all fractional shares of GCI Group Common Stock, separately by series. As a result of the foregoing transactions, the Issuer was spun-off from the Reporting Person and the Reporting Person ceased to have an equity interest in the Issuer and thus is no longer subject to the obligations of Section 16 of the Securities Exchange Act of 1934.

SEC source: 0001104659-25-067807 · tm2520149-2_4seq1.xml · nonDerivative · entry 4

Liberty Broadband Corp · CIK 0001611983 · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 24,646,041

F1 · kind: The transactions reported on this Form 4 relate to the spin-off of the Issuer from the Reporting Person effective July 14, 2025. To effect the spin-off, the issued and outstanding common stock of the Issuer, consisting of 1,000 shares of common stock, all of which were held by the Reporting Person, were reclassified into 3,650,938 shares of the Issuer's Series A GCI Group common stock ("GLIBA"), 400,806 shares of the Issuer's Series B GCI Group common stock ("GLIBB"), and 24,646,041 shares of the Issuer's Series C GCI Group common stock ("GLIBK" and, together with GLIBA and GLIBB, "GCI Group Common Stock") (collectively, the "Reclassification").

F2 · kind: Immediately following the Reclassification, in such spin-off, the Reporting Person distributed to holders of record of the Reporting Person's common stock, 0.20 of a share of the corresponding series of GCI Group Common Stock, with cash (without interest) paid in lieu of any fractional shares of GCI Group Common Stock, after aggregating all fractional shares of GCI Group Common Stock, separately by series. As a result of the foregoing transactions, the Issuer was spun-off from the Reporting Person and the Reporting Person ceased to have an equity interest in the Issuer and thus is no longer subject to the obligations of Section 16 of the Securities Exchange Act of 1934.

F1 · price: The transactions reported on this Form 4 relate to the spin-off of the Issuer from the Reporting Person effective July 14, 2025. To effect the spin-off, the issued and outstanding common stock of the Issuer, consisting of 1,000 shares of common stock, all of which were held by the Reporting Person, were reclassified into 3,650,938 shares of the Issuer's Series A GCI Group common stock ("GLIBA"), 400,806 shares of the Issuer's Series B GCI Group common stock ("GLIBB"), and 24,646,041 shares of the Issuer's Series C GCI Group common stock ("GLIBK" and, together with GLIBA and GLIBB, "GCI Group Common Stock") (collectively, the "Reclassification").

SEC source: 0001104659-25-067807 · tm2520149-2_4seq1.xml · nonDerivative · entry 3

Liberty Broadband Corp · CIK 0001611983 · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 400,806

F1 · kind: The transactions reported on this Form 4 relate to the spin-off of the Issuer from the Reporting Person effective July 14, 2025. To effect the spin-off, the issued and outstanding common stock of the Issuer, consisting of 1,000 shares of common stock, all of which were held by the Reporting Person, were reclassified into 3,650,938 shares of the Issuer's Series A GCI Group common stock ("GLIBA"), 400,806 shares of the Issuer's Series B GCI Group common stock ("GLIBB"), and 24,646,041 shares of the Issuer's Series C GCI Group common stock ("GLIBK" and, together with GLIBA and GLIBB, "GCI Group Common Stock") (collectively, the "Reclassification").

F2 · kind: Immediately following the Reclassification, in such spin-off, the Reporting Person distributed to holders of record of the Reporting Person's common stock, 0.20 of a share of the corresponding series of GCI Group Common Stock, with cash (without interest) paid in lieu of any fractional shares of GCI Group Common Stock, after aggregating all fractional shares of GCI Group Common Stock, separately by series. As a result of the foregoing transactions, the Issuer was spun-off from the Reporting Person and the Reporting Person ceased to have an equity interest in the Issuer and thus is no longer subject to the obligations of Section 16 of the Securities Exchange Act of 1934.

F1 · price: The transactions reported on this Form 4 relate to the spin-off of the Issuer from the Reporting Person effective July 14, 2025. To effect the spin-off, the issued and outstanding common stock of the Issuer, consisting of 1,000 shares of common stock, all of which were held by the Reporting Person, were reclassified into 3,650,938 shares of the Issuer's Series A GCI Group common stock ("GLIBA"), 400,806 shares of the Issuer's Series B GCI Group common stock ("GLIBB"), and 24,646,041 shares of the Issuer's Series C GCI Group common stock ("GLIBK" and, together with GLIBA and GLIBB, "GCI Group Common Stock") (collectively, the "Reclassification").

SEC source: 0001104659-25-067807 · tm2520149-2_4seq1.xml · nonDerivative · entry 2

Liberty Broadband Corp · CIK 0001611983 · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,650,938

F1 · kind: The transactions reported on this Form 4 relate to the spin-off of the Issuer from the Reporting Person effective July 14, 2025. To effect the spin-off, the issued and outstanding common stock of the Issuer, consisting of 1,000 shares of common stock, all of which were held by the Reporting Person, were reclassified into 3,650,938 shares of the Issuer's Series A GCI Group common stock ("GLIBA"), 400,806 shares of the Issuer's Series B GCI Group common stock ("GLIBB"), and 24,646,041 shares of the Issuer's Series C GCI Group common stock ("GLIBK" and, together with GLIBA and GLIBB, "GCI Group Common Stock") (collectively, the "Reclassification").

F2 · kind: Immediately following the Reclassification, in such spin-off, the Reporting Person distributed to holders of record of the Reporting Person's common stock, 0.20 of a share of the corresponding series of GCI Group Common Stock, with cash (without interest) paid in lieu of any fractional shares of GCI Group Common Stock, after aggregating all fractional shares of GCI Group Common Stock, separately by series. As a result of the foregoing transactions, the Issuer was spun-off from the Reporting Person and the Reporting Person ceased to have an equity interest in the Issuer and thus is no longer subject to the obligations of Section 16 of the Securities Exchange Act of 1934.

F1 · price: The transactions reported on this Form 4 relate to the spin-off of the Issuer from the Reporting Person effective July 14, 2025. To effect the spin-off, the issued and outstanding common stock of the Issuer, consisting of 1,000 shares of common stock, all of which were held by the Reporting Person, were reclassified into 3,650,938 shares of the Issuer's Series A GCI Group common stock ("GLIBA"), 400,806 shares of the Issuer's Series B GCI Group common stock ("GLIBB"), and 24,646,041 shares of the Issuer's Series C GCI Group common stock ("GLIBK" and, together with GLIBA and GLIBB, "GCI Group Common Stock") (collectively, the "Reclassification").

SEC source: 0001104659-25-067807 · tm2520149-2_4seq1.xml · nonDerivative · entry 1

Liberty Broadband Corp · CIK 0001611983 · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

F1 · kind: The transactions reported on this Form 4 relate to the spin-off of the Issuer from the Reporting Person effective July 14, 2025. To effect the spin-off, the issued and outstanding common stock of the Issuer, consisting of 1,000 shares of common stock, all of which were held by the Reporting Person, were reclassified into 3,650,938 shares of the Issuer's Series A GCI Group common stock ("GLIBA"), 400,806 shares of the Issuer's Series B GCI Group common stock ("GLIBB"), and 24,646,041 shares of the Issuer's Series C GCI Group common stock ("GLIBK" and, together with GLIBA and GLIBB, "GCI Group Common Stock") (collectively, the "Reclassification").

F2 · kind: Immediately following the Reclassification, in such spin-off, the Reporting Person distributed to holders of record of the Reporting Person's common stock, 0.20 of a share of the corresponding series of GCI Group Common Stock, with cash (without interest) paid in lieu of any fractional shares of GCI Group Common Stock, after aggregating all fractional shares of GCI Group Common Stock, separately by series. As a result of the foregoing transactions, the Issuer was spun-off from the Reporting Person and the Reporting Person ceased to have an equity interest in the Issuer and thus is no longer subject to the obligations of Section 16 of the Securities Exchange Act of 1934.

F1 · price: The transactions reported on this Form 4 relate to the spin-off of the Issuer from the Reporting Person effective July 14, 2025. To effect the spin-off, the issued and outstanding common stock of the Issuer, consisting of 1,000 shares of common stock, all of which were held by the Reporting Person, were reclassified into 3,650,938 shares of the Issuer's Series A GCI Group common stock ("GLIBA"), 400,806 shares of the Issuer's Series B GCI Group common stock ("GLIBB"), and 24,646,041 shares of the Issuer's Series C GCI Group common stock ("GLIBK" and, together with GLIBA and GLIBB, "GCI Group Common Stock") (collectively, the "Reclassification").

SEC source: 0001225208-25-006692 · doc4.xml · nonDerivative · entry 6

DUNCAN RONALD A · CIK 0000905853 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Indirect · By Spouse

Disclosed balance after: 5,431

F1 · security: On July 14, 2025, Liberty Broadband Corporation completed the spin-off of the Issuer (the "Spin-Off"), which was effected by the distribution to each holder of its common stock as of 5:00 p.m., New York City time, on June 30, 2025, of 0.20 of a share of the Issuer's Series A, Series B and Series C GCI Group common stock for each whole share of the corresponding series of Liberty Broadband Corporation's common stock, with cash (with no interest) paid in lieu of fractional shares.

F1 · kind: On July 14, 2025, Liberty Broadband Corporation completed the spin-off of the Issuer (the "Spin-Off"), which was effected by the distribution to each holder of its common stock as of 5:00 p.m., New York City time, on June 30, 2025, of 0.20 of a share of the Issuer's Series A, Series B and Series C GCI Group common stock for each whole share of the corresponding series of Liberty Broadband Corporation's common stock, with cash (with no interest) paid in lieu of fractional shares.

F1 · price: On July 14, 2025, Liberty Broadband Corporation completed the spin-off of the Issuer (the "Spin-Off"), which was effected by the distribution to each holder of its common stock as of 5:00 p.m., New York City time, on June 30, 2025, of 0.20 of a share of the Issuer's Series A, Series B and Series C GCI Group common stock for each whole share of the corresponding series of Liberty Broadband Corporation's common stock, with cash (with no interest) paid in lieu of fractional shares.

F6 · ownership.nature: The Reporting Person disclaims beneficial ownership of these shares owned by his spouse.

SEC source: 0001225208-25-006692 · doc4.xml · nonDerivative · entry 5

DUNCAN RONALD A · CIK 0000905853 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Indirect · By RAD, LLC

Disclosed balance after: 839

F1 · security: On July 14, 2025, Liberty Broadband Corporation completed the spin-off of the Issuer (the "Spin-Off"), which was effected by the distribution to each holder of its common stock as of 5:00 p.m., New York City time, on June 30, 2025, of 0.20 of a share of the Issuer's Series A, Series B and Series C GCI Group common stock for each whole share of the corresponding series of Liberty Broadband Corporation's common stock, with cash (with no interest) paid in lieu of fractional shares.

F1 · kind: On July 14, 2025, Liberty Broadband Corporation completed the spin-off of the Issuer (the "Spin-Off"), which was effected by the distribution to each holder of its common stock as of 5:00 p.m., New York City time, on June 30, 2025, of 0.20 of a share of the Issuer's Series A, Series B and Series C GCI Group common stock for each whole share of the corresponding series of Liberty Broadband Corporation's common stock, with cash (with no interest) paid in lieu of fractional shares.

F1 · price: On July 14, 2025, Liberty Broadband Corporation completed the spin-off of the Issuer (the "Spin-Off"), which was effected by the distribution to each holder of its common stock as of 5:00 p.m., New York City time, on June 30, 2025, of 0.20 of a share of the Issuer's Series A, Series B and Series C GCI Group common stock for each whole share of the corresponding series of Liberty Broadband Corporation's common stock, with cash (with no interest) paid in lieu of fractional shares.

F5 · ownership.nature: The Reporting Person has a 0.1% ownership interest in and is the controlling member of RAD, LLC and the Trust holds the remaining 99.9% ownership interest of RAD, LLC. The Reporting Person disclaims beneficial ownership of these securities, except to the extent of his pecuniary interest therein.

SEC source: 0001225208-25-006692 · doc4.xml · nonDerivative · entry 4

DUNCAN RONALD A · CIK 0000905853 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Indirect · By Missy, LLC

Disclosed balance after: 1,461

F1 · security: On July 14, 2025, Liberty Broadband Corporation completed the spin-off of the Issuer (the "Spin-Off"), which was effected by the distribution to each holder of its common stock as of 5:00 p.m., New York City time, on June 30, 2025, of 0.20 of a share of the Issuer's Series A, Series B and Series C GCI Group common stock for each whole share of the corresponding series of Liberty Broadband Corporation's common stock, with cash (with no interest) paid in lieu of fractional shares.

F1 · kind: On July 14, 2025, Liberty Broadband Corporation completed the spin-off of the Issuer (the "Spin-Off"), which was effected by the distribution to each holder of its common stock as of 5:00 p.m., New York City time, on June 30, 2025, of 0.20 of a share of the Issuer's Series A, Series B and Series C GCI Group common stock for each whole share of the corresponding series of Liberty Broadband Corporation's common stock, with cash (with no interest) paid in lieu of fractional shares.

F1 · price: On July 14, 2025, Liberty Broadband Corporation completed the spin-off of the Issuer (the "Spin-Off"), which was effected by the distribution to each holder of its common stock as of 5:00 p.m., New York City time, on June 30, 2025, of 0.20 of a share of the Issuer's Series A, Series B and Series C GCI Group common stock for each whole share of the corresponding series of Liberty Broadband Corporation's common stock, with cash (with no interest) paid in lieu of fractional shares.

F4 · ownership.nature: RAD, LLC has a 25% ownership interest in and is the managing member of Missy, LLC. The Reporting Person's spouse has a 25% ownership interest in Missy, LLC and the Reporting Person's adult daughter holds the remaining 50% ownership interest in Missy, LLC. Accordingly, the Reporting Person may be deemed to be the indirect beneficial owner of certain Issuer's securities owned by Missy, LLC. The Reporting Person disclaims beneficial ownership of these securities, except to the extent of his pecuniary interest therein.

SEC source: 0001225208-25-006692 · doc4.xml · nonDerivative · entry 3

DUNCAN RONALD A · CIK 0000905853 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Indirect · By 560 Company, Inc.

Disclosed balance after: 14,870

F1 · security: On July 14, 2025, Liberty Broadband Corporation completed the spin-off of the Issuer (the "Spin-Off"), which was effected by the distribution to each holder of its common stock as of 5:00 p.m., New York City time, on June 30, 2025, of 0.20 of a share of the Issuer's Series A, Series B and Series C GCI Group common stock for each whole share of the corresponding series of Liberty Broadband Corporation's common stock, with cash (with no interest) paid in lieu of fractional shares.

F1 · kind: On July 14, 2025, Liberty Broadband Corporation completed the spin-off of the Issuer (the "Spin-Off"), which was effected by the distribution to each holder of its common stock as of 5:00 p.m., New York City time, on June 30, 2025, of 0.20 of a share of the Issuer's Series A, Series B and Series C GCI Group common stock for each whole share of the corresponding series of Liberty Broadband Corporation's common stock, with cash (with no interest) paid in lieu of fractional shares.

F1 · price: On July 14, 2025, Liberty Broadband Corporation completed the spin-off of the Issuer (the "Spin-Off"), which was effected by the distribution to each holder of its common stock as of 5:00 p.m., New York City time, on June 30, 2025, of 0.20 of a share of the Issuer's Series A, Series B and Series C GCI Group common stock for each whole share of the corresponding series of Liberty Broadband Corporation's common stock, with cash (with no interest) paid in lieu of fractional shares.

F3 · ownership.nature: The Reporting Person owns 55% of 560 Company, Inc. and has voting and dispositive power over these shares. A trust (the "Trust") which the Reporting Person's spouse serves as trustee and his adult daughter is the principal beneficiary owns the remaining 45% of 560 Company, Inc. The Reporting Person disclaims beneficial ownership of these securities, except to the extent of his pecuniary interest therein.

SEC source: 0001225208-25-006692 · doc4.xml · nonDerivative · entry 2

DUNCAN RONALD A · CIK 0000905853 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Indirect · By 401(k) Savings Plan

Disclosed balance after: 557

F1 · security: On July 14, 2025, Liberty Broadband Corporation completed the spin-off of the Issuer (the "Spin-Off"), which was effected by the distribution to each holder of its common stock as of 5:00 p.m., New York City time, on June 30, 2025, of 0.20 of a share of the Issuer's Series A, Series B and Series C GCI Group common stock for each whole share of the corresponding series of Liberty Broadband Corporation's common stock, with cash (with no interest) paid in lieu of fractional shares.

F1 · kind: On July 14, 2025, Liberty Broadband Corporation completed the spin-off of the Issuer (the "Spin-Off"), which was effected by the distribution to each holder of its common stock as of 5:00 p.m., New York City time, on June 30, 2025, of 0.20 of a share of the Issuer's Series A, Series B and Series C GCI Group common stock for each whole share of the corresponding series of Liberty Broadband Corporation's common stock, with cash (with no interest) paid in lieu of fractional shares.

F1 · price: On July 14, 2025, Liberty Broadband Corporation completed the spin-off of the Issuer (the "Spin-Off"), which was effected by the distribution to each holder of its common stock as of 5:00 p.m., New York City time, on June 30, 2025, of 0.20 of a share of the Issuer's Series A, Series B and Series C GCI Group common stock for each whole share of the corresponding series of Liberty Broadband Corporation's common stock, with cash (with no interest) paid in lieu of fractional shares.

F2 · ownership.nature: The number of shares reported as held in the Reporting Person's 401(k) is based on a statement from the Plan Administrator dated as of June 30, 2025, after accounting for the Spin-Off.

SEC source: 0001225208-25-006692 · doc4.xml · nonDerivative · entry 1

DUNCAN RONALD A · CIK 0000905853 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 79,424

F1 · security: On July 14, 2025, Liberty Broadband Corporation completed the spin-off of the Issuer (the "Spin-Off"), which was effected by the distribution to each holder of its common stock as of 5:00 p.m., New York City time, on June 30, 2025, of 0.20 of a share of the Issuer's Series A, Series B and Series C GCI Group common stock for each whole share of the corresponding series of Liberty Broadband Corporation's common stock, with cash (with no interest) paid in lieu of fractional shares.

F1 · kind: On July 14, 2025, Liberty Broadband Corporation completed the spin-off of the Issuer (the "Spin-Off"), which was effected by the distribution to each holder of its common stock as of 5:00 p.m., New York City time, on June 30, 2025, of 0.20 of a share of the Issuer's Series A, Series B and Series C GCI Group common stock for each whole share of the corresponding series of Liberty Broadband Corporation's common stock, with cash (with no interest) paid in lieu of fractional shares.

F1 · price: On July 14, 2025, Liberty Broadband Corporation completed the spin-off of the Issuer (the "Spin-Off"), which was effected by the distribution to each holder of its common stock as of 5:00 p.m., New York City time, on June 30, 2025, of 0.20 of a share of the Issuer's Series A, Series B and Series C GCI Group common stock for each whole share of the corresponding series of Liberty Broadband Corporation's common stock, with cash (with no interest) paid in lieu of fractional shares.

SEC source: 0001225208-25-006690 · doc4.xml · nonDerivative · entry 3

Green Richard R · CIK 0001452212 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · By Spouse

Disclosed balance after: 126

F1 · security: On July 14, 2025, Liberty Broadband Corporation completed the spin-off of the Issuer, which was effected by the distribution to each holder of its common stock as of 5:00 p.m., New York City time, on June 30, 2025, of 0.20 of a share of the Issuer's Series A, Series B and Series C GCI Group common stock for each whole share of the corresponding series of Liberty Broadband Corporation's common stock, with cash (with no interest) paid in lieu of fractional shares.

F1 · kind: On July 14, 2025, Liberty Broadband Corporation completed the spin-off of the Issuer, which was effected by the distribution to each holder of its common stock as of 5:00 p.m., New York City time, on June 30, 2025, of 0.20 of a share of the Issuer's Series A, Series B and Series C GCI Group common stock for each whole share of the corresponding series of Liberty Broadband Corporation's common stock, with cash (with no interest) paid in lieu of fractional shares.

F1 · price: On July 14, 2025, Liberty Broadband Corporation completed the spin-off of the Issuer, which was effected by the distribution to each holder of its common stock as of 5:00 p.m., New York City time, on June 30, 2025, of 0.20 of a share of the Issuer's Series A, Series B and Series C GCI Group common stock for each whole share of the corresponding series of Liberty Broadband Corporation's common stock, with cash (with no interest) paid in lieu of fractional shares.

F2 · ownership.nature: The Reporting Person disclaims beneficial ownership of these shares owned by his spouse.

SEC source: 0001225208-25-006690 · doc4.xml · nonDerivative · entry 2

Green Richard R · CIK 0001452212 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · By Spouse

Disclosed balance after: 33

F1 · security: On July 14, 2025, Liberty Broadband Corporation completed the spin-off of the Issuer, which was effected by the distribution to each holder of its common stock as of 5:00 p.m., New York City time, on June 30, 2025, of 0.20 of a share of the Issuer's Series A, Series B and Series C GCI Group common stock for each whole share of the corresponding series of Liberty Broadband Corporation's common stock, with cash (with no interest) paid in lieu of fractional shares.

F1 · kind: On July 14, 2025, Liberty Broadband Corporation completed the spin-off of the Issuer, which was effected by the distribution to each holder of its common stock as of 5:00 p.m., New York City time, on June 30, 2025, of 0.20 of a share of the Issuer's Series A, Series B and Series C GCI Group common stock for each whole share of the corresponding series of Liberty Broadband Corporation's common stock, with cash (with no interest) paid in lieu of fractional shares.

F1 · price: On July 14, 2025, Liberty Broadband Corporation completed the spin-off of the Issuer, which was effected by the distribution to each holder of its common stock as of 5:00 p.m., New York City time, on June 30, 2025, of 0.20 of a share of the Issuer's Series A, Series B and Series C GCI Group common stock for each whole share of the corresponding series of Liberty Broadband Corporation's common stock, with cash (with no interest) paid in lieu of fractional shares.

F2 · ownership.nature: The Reporting Person disclaims beneficial ownership of these shares owned by his spouse.