GLIBK · GCI Liberty, Inc.

Summary

GCI Liberty, Inc. disclosed a temporary blackout period for its GCI 401(k) Plan due to the liquidation of the Series C GCI Group common stock fund. Consequently, a SOX blackout period restricting trading by directors and executive officers in Company common stock is expected to begin on March 16, 2026, and end on or about March 20, 2026.

Key takeaways

• A blackout period for the GCI 401(k) Plan was triggered by the removal and liquidation of the Series C GCI Group common stock as an investment option.
• The Plan blackout period is expected to begin at 4:00 p.m. ET on March 16, 2026, and end on or about March 20, 2026.
• Directors and executive officers are subject to trading restrictions under Section 306(a) of the Sarbanes-Oxley Act of 2002 during the blackout period.
• The trading prohibition applies to Series A, Series B, and Series C GCI Group common stock, including stock options.
• The liquidation of the common stock from the Plan is anticipated to occur in the first quarter of 2026.
• Inquiries regarding the blackout period can be directed to Renee Wilm or Brittany Uthoff in the Legal Department.