Ronald A. Duncan - 10 Feb 2026 Form 4 Insider Report for GCI Liberty, Inc. (GLIBK)

Role
President and CEO, Director
Signature
/s/ Brittany A. Uthoff as Attorney in Fact for Ronald A. Duncan
Issuer symbol
GLIBK
Transactions as of
10 Feb 2026
Net transactions value
-$305,928
Form type
4
Filing time
23 Feb 2026, 16:20:01 UTC
Previous filing
06 Jan 2026
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
DUNCAN RONALD A President and CEO, Director 12300 LIBERTY BOULEVARD, ENGLEWOOD /s/ Brittany A. Uthoff as Attorney in Fact for Ronald A. Duncan 23 Feb 2026 0000905853

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction GLIBK Series C GCI Group Common Stock Award $0 +18,423 +16% $0.000000 133,655 10 Feb 2026 Direct F1
transaction GLIBK Series C GCI Group Common Stock Options Exercise $0 +1,158 +0.87% $0.000000 134,813 20 Feb 2026 Direct F2
transaction GLIBK Series C GCI Group Common Stock Tax liability $305,928 -7,706 -5.7% $39.70 127,107 20 Feb 2026 Direct
holding GLIBK Series C GCI Group Common Stock 557 10 Feb 2026 By 401(k) Savings Plan F3
holding GLIBK Series C GCI Group Common Stock 20,578 10 Feb 2026 By 560 Company, Inc. F4
holding GLIBK Series C GCI Group Common Stock 2,022 10 Feb 2026 By Missy, LLC F5
holding GLIBK Series C GCI Group Common Stock 1,162 10 Feb 2026 By RAD, LLC F6
holding GLIBK Series C GCI Group Common Stock 7,516 10 Feb 2026 By Spouse F7

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Underlying Class Amount Exercise Price Ownership Footnotes
transaction GLIBK Restricted Stock Units - GLIBK Options Exercise $0 -1,158 -100% $0.000000 0 20 Feb 2026 Series C GCI Group Common Stock 1,158 Direct F8, F9
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 Represents shares of Series C GCI Group Common Stock ("GLIBK") to be issued as a result of the certification on February 10, 2026 of the satisfaction of performance criteria established for the performance-based restricted stock units granted to the Reporting Person on August 21, 2025.
F2 Each restricted stock unit converted into one share of GLIBK.
F3 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 January 31, 2026.
F4 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.
F5 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.
F6 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.
F7 The Reporting Person disclaims beneficial ownership of these shares owned by his spouse.
F8 Each restricted stock unit represents a contingent right to receive one share of GLIBK.
F9 This restricted stock unit was previously reported to vest on March 15, 2026. Vesting of this restricted stock unit was accelerated to correspond with the vesting of the performance-based restricted stock units granted to the Reporting Person on August 21, 2025 as referenced in Footnote 1.