X0306 4 2017-06-08 0001632127 Cable One, Inc. CABO 0001018401 GRAHAM DONALD C/O GRAHAM HOLDINGS COMPANY 1300 NORTH 17TH STREET ARLINGTON VA 22209 true Common Stock; par value $0.01 246985 D Common Stock; par value $0.01 59241 I Grantor Retained Annuity Trust Common Stock; par value $0.01 3087 I Revocable Trust Common Stock; par value $0.01 2017-06-08 4 S 0 81 722.47 D 225112 I Trust for Siblings Common Stock; par value $0.01 2017-06-08 4 S 0 25 723.01 D 225087 I Trust for Siblings Common Stock; par value $0.01 2017-06-08 4 S 0 200 725.7 D 224887 I Trust for Siblings Common Stock; par value $0.01 2017-06-08 4 S 0 194 726.78 D 224693 I Trust for Siblings Common Stock; par value $0.01 2017-06-08 4 S 0 100 727.54 D 224593 I Trust for Siblings Common Stock; par value $0.01 2017-06-09 4 S 0 91 723.1 D 224502 I Trust for Siblings Common Stock; par value $0.01 2017-06-09 4 S 0 191 728.98 D 224311 I Trust for Siblings Common Stock; par value $0.01 2017-06-09 4 S 0 318 729.62 D 223993 I Trust for Siblings Common Stock; par value $0.01 2017-06-09 4 S 0 100 730.05 D 223893 I Trust for Siblings Common Stock; par value $0.01 51748 I Trust for Children Common Stock; par value $0.01 2844 I Trusts for Children of Siblings Common Stock; par value $0.01 5000 I Trusts for Third Party Common Stock; par value $0.01 388225 I Beneficiary of Trusts Common Stock; par value $0.01 15 I By spouse The reporting person is a trustee of the trust that owns the reported securities, but he is not a beneficiary of such trust. The reporting person disclaims beneficial ownership of the reported securities. The reporting person disclaims beneficial ownership of the reported securities. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $722.38 to $722.56, inclusive. The reporting person undertakes to provide to Cable One, Inc., any security holder of Cable One, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the shares sold at each separate price within the ranges set forth in this footnote, and in footnotes (4) to (8), inclusive to this Form 4. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $725.41 to $725.99, inclusive. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $726.61 to $726.97, inclusive. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $723.01 to $723.51, inclusive. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $728.96 to $728.99, inclusive. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $729.00 to $729.96, inclusive. /s/ Nicole M. Maddrey for Donald E. Graham 2017-06-12