SCHEDULE 13G

Cable One Inc

Common Stock, par value $0.01 per share · CUSIP: 12685J105

Event date: 2025-12-31

Reporting persons may disclose overlapping interests. Their amounts are shown individually and are not added into a filing total.

Filing-level shares

Unavailable

Percent of class

Unavailable

• Bank of Montreal

  Shares: 471,442 · Class: 8.35%

• BANK OF MONTREAL HOLDING INC.

  Shares: 345 · Class: 0%

• BMO NESBITT BURNS INC. WEALTH MANAGEMENT

  Shares: 260 · Class: 0%

• BMO ASSET MANAGEMENT INC.

  Shares: 260 · Class: 0%

• BMO FINANCIAL CORP.

  Shares: 12,276 · Class: 0.21%

• BMO CAPITAL MARKETS CORP.

  Shares: 11,870 · Class: 0.21%

• BMO BANK N.A.

  Shares: 247 · Class: 0%

• BMO FAMILY OFFICE, LLC

  Shares: 159 · Class: 0%

• 1001271606 ONTARIO INC

  Shares: 457,503 · Class: 8.11%

• Burgundy Asset Management, Inc.

  Shares: 457,503 · Class: 8.11%

Amounts are as disclosed in this filing. Schedule type alone does not establish investment intent.