X0508 4 2024-09-05 0000088000 Horizon Kinetics Holding Corp HKHC 0001295022 DOYLE PETER 470 PARK AVENUE SOUTH 8TH FLOOR SOUTH NEW YORK NY 10016 1 1 1 Vice-President 0 Common Stock 2024-09-05 4 P 0 50 26.50 A 880682 D Common Stock 8216437 I Horizon Common Inc. Common Stock 823863 I FRMO Corp. Common Stock 6900 I Kinetics Institutional Partners LP Common Stock 5810 I Kinetics Partners LP Common Stock 951 I Horizon kinetics Asset Management LLC Mr. Doyle received 880,457 shares on August 1, 2024 in connection with the merger between Horizon Kinetics LLC and Scott's Liquid Gold-Inc (HKHC). Of the shares reported, only 225 are available for trading. 8,214,337 of the 8,216,437 shares reported were received on August 1, 2024 in connection with the merger between Horizon Kinetics LLC and Scott's Liquid Gold-Inc. (HKHC) and are not available for trading. Mr. Doyle owns approximately 11% of the shares reported and disclaims beneficial ownership over the remaining shares. The shares were received on August 1, 2024 in connection with the merger between Horizon Kinetics LLC and Scott's Liquid Gold-Inc. (HKHC) and are not available for trading. Mr. Doyle owns approximately 10% of the shares reported and disclaims beneficial ownership over the remaining shares. Mr. Doyle disclaims beneficial ownership except to the extent of his pecuniary interest. /s/ Jay Kesslen, attorney-in-fact 2024-09-06