X0609 4 2026-08-26 0000088000 Horizon Kinetics Holding Corp HKHC 0001829268 Roller Daniel J false C/O MARAN CAPITAL MANAGEMENT, LLC 201 COLUMBINE ST, UNIT 300 DENVER CO 80206 1 0001655289 Maran Partners Fund, LP false C/O MARAN CAPITAL MANAGEMENT, LLC 201 COLUMBINE ST, UNIT 300 DENVER CO 80206 1 Affiliate 0001829261 Maran Partners GP, LLC false C/O MARAN CAPITAL MANAGEMENT, LLC 201 COLUMBINE ST, UNIT 300 DENVER CO 80206 1 Affiliate 0001829240 Maran Capital Management, LLC false C/O MARAN CAPITAL MANAGEMENT, LLC 201 COLUMBINE ST, UNIT 300 DENVER CO 80206 1 Affiliate 0 Common Stock 2026-08-26 4 P 0 500 26.50 A 10000 D Common Stock 236066 I Maran Partners Fund, LP This Form 4 is filed jointly by Maran Partners Fund, LP ("MPF"), a Delaware limited partnership, Maran Partners GP, LLC ("MPGP"), a Delaware limited liability company, Maran Capital Management, LLC ("MCM"), a Delaware limited liability company, and Daniel J. Roller (collectively, the "Reporting Persons"). Securities owned directly by MPF. The reported securities may be deemed to be indirectly beneficially owned by MPGP, as the general partner of MPF. The reported securities may also be deemed to be indirectly beneficially owned by MCM, as the investment manager of MPF. The reported securities may also be deemed to be indirectly beneficially owned by Daniel J. Roller, as the sole managing member of MPGP and MCM. Each of the Reporting Persons disclaims beneficial ownership of the securities reported herein except to the extent of his or its pecuniary interest therein. /s/Jay Kesslen, attorney-in-fact 2026-08-27