SCHEDULE 13G/A 0001056823-25-000018 0001056823 XXXXXXXX LIVE 1 Class A Shares Representing Limited Liability Company Interests 09/09/2025 0001995807 LandBridge Co LLC 514952100 5555 SAN FELIPE STREET, SUITE 1200 5555 SAN FELIPE STREET, SUITE 1200 HOUSTON TX 77056 Rule 13d-1(b) HORIZON KINETICS ASSET MANAGEMENT LLC DE 5632113.00 0.00 5632113.00 0.00 5632113.00 22.2 IA LandBridge Co LLC 5555 SAN FELIPE STREET, SUITE 1200, 5555 SAN FELIPE STREET, SUITE 1200, HOUSTON, TEXAS, 77056. Horizon Kinetics Asset Management LLC 470 Park Ave S, New York, NY 10016 Delaware N IA 5,632,113 22.2% 5,632,113 0 5,632,113 Y Y Y Y N By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were acquired and are held in the ordinary course of business and were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect, other than activities solely in connection with a nomination under § 240.14a-11. HORIZON KINETICS ASSET MANAGEMENT LLC /s/Jay Kesslen 10/29/2025