X0609 4 2026-08-07 0001995807 LandBridge Co LLC LB 0001298438 Capobianco David N false C/O LANDBRIDGE COMPANY LLC 5555 SAN FELIPE STREET, SUITE 1200 HOUSTON TX 77056 true false true false false Class B shares 2026-08-07 4 J false 1250000 0.00 D 47168908 I See Footnote Class A shares 2026-08-07 4 C false 1250000 0.00 A 1250000 I See Footnote Class A shares 2026-08-07 4 S false 1250000 75.05 D 0 I See Footnote DBR Land Holdings LLC Units 2026-08-07 4 C false 1250000 0.00 D Class A Shares 1250000 47168908 I See Footnote Pursuant to the Amended and Restated Limited Liability Company Agreement of DBR Land Holdings LLC ("OpCo"), each unit representing membership interests in OpCo ("OpCo Units") (together with the delivery for no consideration of an equal number of Class B shares representing limited liability company interests ("Class B Shares") in LandBridge Company LLC (the "Issuer")) may be redeemed for an equal number of newly issued Class A shares representing limited liability company interests in the Issuer ("Class A Shares") or for cash, at the Issuer's election, subject to satisfaction of certain requirements. OpCo Units do not expire. Class B Shares do not represent economic interests in the Issuer. In connection with the sale by LandBridge Holdings LLC ("LandBridge Holdings") pursuant to Rule 144 of the Securities Act of 1933, as amended, through a broker-dealer, on August 7, 2026, LandBridge Holdings (i) redeemed 1,250,000 OpCo Units (together with the cancellation of 1,250,000 Class B Shares) for 1,250,000 Class A Shares and (ii) sold 1,250,000 Class A Shares at a price per share of $75.05. Reflects the cancellation of 73,141 OpCo Units and 102,987 OpCo Units (each, together with the cancellation of a corresponding number of Class B Shares) in lieu of the payment of a tax distribution by OpCo to the Issuer in excess of the Issuer's current income tax obligation for the three months ended March 31, 2026 and June 30, 2026, respectively. The number of cancelled OpCo Units was determined based on the Class A Share price as of the tax distribution date. LandBridge Holdings is ultimately controlled by the Reporting Person. As a result of the foregoing, the Reporting Person may exercise voting and dispositive power over the Class B Shares held by LandBridge Holdings and may be deemed to be the beneficial owner thereof. The Reporting Person disclaims beneficial ownership of OpCo Units and Class B Shares in excess of his pecuniary interest therein, if any. /s/ David N. Capobianco 2026-08-11