Material Agreement (Form 8-K)

Item 1.01. Entry into a Material Definitive Agreement.

Extension of MBI Purchase Agreement Closing Date

As previously disclosed, on January 3, 2026, Cable One, Inc. (the "Company") entered into a Purchase Agreement (the "Purchase Agreement") with Mega Broadband Investments Holdings LLC, a Delaware limited liability company ("MBI"), Mega Broadband Blocker, LLC, a Delaware limited liability company, GTCR Fund XII/C LP, a Delaware limited partnership, Major Merger Sub LLC, a Delaware limited liability company and wholly-owned subsidiary of the Company, and, solely in its capacity as equityholders' representative, GTCR Fund XII/B, a Delaware partnership, pursuant to which the Company would acquire the equity interests in MBI that it did not already own (the "MBI Purchase").

The Company and certain affiliates of GTCR LLC have mutually agreed to extend the previously anticipated October 1, 2026 closing date of the MBI Purchase to October 9, 2026 (or such earlier date as may be mutually agreed by the Company and such other parties).

Item 8.01. Other Events.

Cleansing Information

The Company previously entered into confidentiality agreements with certain potential investors pursuant to which the Company and such potential investors engaged in discussions concerning a potential financing transaction in connection with the MBI Purchase. The Company's engagement with those potential investors has concluded.