CABO

cabo-202602260001632127false00016321272026-02-262026-02-26

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of Earliest Event Reported): February 26, 2026

Cable One, Inc. (Exact Name of Registrant as Specified in Its Charter)

Delaware001-3686313-3060083 (State or Other Jurisdiction of Incorporation or Organization)(Commission File Number)(I.R.S. Employer Identification No.)

210 E. Earll Drive, Phoenix, Arizona 85012 (Address of Principal Executive Offices)(Zip Code)

Registrant’s Telephone Number, Including Area Code: (602) 364-6000 Not applicable (Former name or former address, if changed since last report.)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

oWritten communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

oSoliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

oPre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

oPre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:

Title of Each ClassTrading Symbol(s)Name of Each Exchange on Which Registered Common Stock, par value $0.01 per shareCABONew York Stock Exchange

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter). Emerging growth company o If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. o

Item 2.02    Results of Operations and Financial Condition. On February 26, 2026, Cable One, Inc. (the “Company”) issued a press release related to its results for the quarter and year ended December 31, 2025. A copy of the press release is furnished as Exhibit 99.1 and is incorporated by reference into this Item 2.02. The information contained in this Item 2.02, as well as in Exhibit 99.1, is furnished and shall not be deemed to be “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or otherwise subject to the liabilities of that section, and such information shall not be deemed to be incorporated by reference into any of the Company’s filings under the Securities Act of 1933, as amended, or the Exchange Act, except as expressly set forth by specific reference in such a filing.

Item 9.01    Financial Statements and Exhibits.

Exhibit No.Description

99.1Press release issued by Cable One, Inc., dated February 26, 2026.

104The cover page of this Current Report on Form 8-K, formatted in Inline XBRL.

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

Cable One, Inc.

By:/s/ Christopher J. Arntzen

Name:Christopher J. Arntzen

Title:Senior Vice President, General Counsel and Secretary

Date: February 26, 2026

cabo-202511060001632127false00016321272025-11-062025-11-06

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of Earliest Event Reported): November 6, 2025

Cable One, Inc. (Exact Name of Registrant as Specified in Its Charter)

Delaware001-3686313-3060083 (State or Other Jurisdiction of Incorporation or Organization)(Commission File Number)(I.R.S. Employer Identification No.)

210 E. Earll Drive, Phoenix, Arizona 85012 (Address of Principal Executive Offices)(Zip Code)

Registrant’s Telephone Number, Including Area Code: (602) 364-6000 Not applicable (Former name or former address, if changed since last report.)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

oWritten communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

oSoliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

oPre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

oPre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:

Title of Each ClassTrading Symbol(s)Name of Each Exchange on Which Registered Common Stock, par value $0.01 per shareCABONew York Stock Exchange

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter). Emerging growth company o If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. o

Item 2.02    Results of Operations and Financial Condition. On November 6, 2025, Cable One, Inc. (the “Company”) issued a press release related to its results for the third quarter of 2025. A copy of the press release is furnished as Exhibit 99.1 and is incorporated by reference into this Item 2.02. The information contained in this Item 2.02, as well as in Exhibit 99.1, is furnished and shall not be deemed to be “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or otherwise subject to the liabilities of that section, and such information shall not be deemed to be incorporated by reference into any of the Company’s filings under the Securities Act of 1933, as amended, or the Exchange Act, except as expressly set forth by specific reference in such a filing.

Item 9.01    Financial Statements and Exhibits.

Exhibit No.Description

99.1Press release issued by Cable One, Inc., dated November 6, 2025.

104The cover page of this Current Report on Form 8-K, formatted in Inline XBRL.

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

Cable One, Inc.

By:/s/ Christopher J. Arntzen Name:Christopher J. Arntzen Title:Senior Vice President, General Counsel and Secretary

Date: November 6, 2025

cabo-202507310001632127false00016321272025-07-312025-07-31

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of Earliest Event Reported): July 31, 2025

Cable One, Inc. (Exact Name of Registrant as Specified in Its Charter)

Delaware001-3686313-3060083 (State or Other Jurisdiction of Incorporation or Organization)(Commission File Number)(I.R.S. Employer Identification No.)

210 E. Earll Drive, Phoenix, Arizona 85012 (Address of Principal Executive Offices)(Zip Code)

Registrant’s Telephone Number, Including Area Code: (602) 364-6000 Not applicable (Former name or former address, if changed since last report.)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

oWritten communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

oSoliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

oPre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

oPre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:

Title of Each ClassTrading Symbol(s)Name of Each Exchange on Which Registered Common Stock, par value $0.01 per shareCABONew York Stock Exchange

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter). Emerging growth company o If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. o

Item 2.02    Results of Operations and Financial Condition. On July 31, 2025, Cable One, Inc. (the “Company”) issued a press release related to its results for the second quarter of 2025. A copy of the press release is furnished as Exhibit 99.1 and is incorporated by reference into this Item 2.02. The information contained in this Item 2.02, as well as in Exhibit 99.1, is furnished and shall not be deemed to be “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or otherwise subject to the liabilities of that section, and such information shall not be deemed to be incorporated by reference into any of the Company’s filings under the Securities Act of 1933, as amended, or the Exchange Act, except as expressly set forth by specific reference in such a filing.

Item 9.01    Financial Statements and Exhibits.

Exhibit No.Description

99.1Press release issued by Cable One, Inc., dated July 31, 2025.

104The cover page of this Current Report on Form 8-K, formatted in Inline XBRL.

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

Cable One, Inc.

By:/s/ Christopher J. Arntzen Name:Christopher J. Arntzen Title:Senior Vice President, General Counsel and Secretary

Date: July 31, 2025