LandBridge Co LLC

The following are abbreviations and definitions of certain terms used in this document, many of which are commonly used in the industry:

1918 Ranch Acquisition. The acquisition of approximately 38,000 total acres across Reeves, Loving, Winkler and Ward counties, Texas, and certain related assets from 1918 Ranch & Royalty, LLC. The acreage acquired consists of approximately 22,400 fee simple acres, approximately 12,000 leasehold acres and approximately 3,600 acres subject to a long-term management agreement.

2024 Acquisitions. The Lea County Acquisition, East Stateline Acquisition, Speed Acquisition, Winkler County Acquisition, Brininstool Acquisition and Wolf Bone Acquisition, collectively.

2025 Revolving Credit Facility. The revolving credit agreement entered into between DBR Land Holdings LLC, a subsidiary of LandBridge Company LLC, and Texas Capital Bank on November 18, 2025.

BLM. Bureau of Land Management.

Boe. A barrel of oil equivalent, which is used to express crude oil, NGL and natural gas volumes on a comparable crude oil equivalent basis. Gas equivalents are determined under the relative energy content method by using the ratio of 6.0 Mcf of natural gas to 1.0 Bbl of crude oil or NGL.

Bpd. Barrels per calendar day.

Brackish water. Water with salinity levels between seawater and freshwater.

Brininstool Acquisition. The acquisition of approximately 5,820 surface acres in Lea County, New Mexico, on November 22, 2024 from a private third-party seller.

Caliche. A naturally occurring material consisting of coarse sediment or weathered soil in calcium carbonate that is commonly used for building roads and surface locations.

Completion. The process of preparing a well for the production of oil and gas by injecting high-pressure fluids mixed with proppants to create fractures in reservoir rock to enhance permeability.

Crude oil. A mixture of hydrocarbons that exists in liquid phase in natural underground reservoirs and remains liquid at atmospheric pressure after passing through surface separating facilities.

Delaware Basin. A geological depositional and structural basin in West Texas and southern New Mexico, which is a part of the Permian Basin.

Division. The division of the then-current sole member of the Company, WaterBridge NDB LLC, into two Delaware limited liability companies in accordance with a plan of division prior to the IPO and corporate reorganization.

E&P. Oil and natural gas exploration and production.

E&P companies. Companies engaged in oil and natural gas exploration and production operations.

East Stateline Acquisition. The acquisition of the East Stateline Ranch on May 10, 2024, from a private third-party seller.

East Stateline Ranch. Approximately 103,000 surface acres in Loving and Winkler counties, Texas and Lea County, New Mexico, which were acquired on May 10, 2024, from a private third-party seller.

Five Point. Five Point Infrastructure LLC, a Delaware limited liability company and our financial sponsor.

GAAP. Accounting principles generally accepted in the United States of America.

GHG. Greenhouse gas.

Gross Mineral Acre. The total gross acres in which an owner owns a Mineral Interest or a royalty. For example, an owner who owns a 25%, or 1/4th, Royalty in 100 acres has 100 Gross Mineral Acres.

Henry Hub. A natural gas pipeline located in Erath, Louisiana that serves as the official delivery location for futures contracts on the NYMEX. The settlement prices at the Henry Hub are used as benchmarks for the entire North American natural gas market.

Indenture. The indenture entered into between DBR Land Holdings LLC, its subsidiaries and UMB Bank, N.A., as trustee in connection with the issuance of the Notes.

LandBridge. LandBridge Company LLC, a Delaware limited liability company.

LandBridge Holdings. LandBridge Holdings LLC, a Delaware limited liability company.

LBH Incentive Units. Management incentive units consisting of time-based awards of profits interests in LandBridge Holdings.

Lea County Acquisition. The acquisition of approximately 11,000 surface acres in Lea County, New Mexico on March 18, 2024, from a private third-party seller.

Legacy Acreage. The Company’s initial approximately 72,000 owned surface acres in Loving and Reeves County, Texas and Eddy County, New Mexico.

MBbls. One thousand barrels.

MBbl/d. One MBbl per day.

Mboe. One thousand BOE.

Mboe/d. One thousand BOE per day.

Mcf. One thousand cubic feet of natural gas.

Mineral interest. Real-property interests that grant ownership of oil and natural gas under a tract of land and the rights to explore for, develop, and produce oil and natural gas on that land or to lease those exploration and development rights to a third party.

MMBtu. One million British thermal units.

MMcf. One million cubic feet of natural gas.

NDB Incentive Units. Incentive units consisting of time-based awards of profits interests in NDB LLC granted to certain individuals prior to the Division.

NDB LLC. WaterBridge NDB LLC, a Delaware limited liability company.

Net Revenue Interest. The net royalty, overriding royalty, production payment and net profits interests in a particular tract or oil and natural gas well.

Net Royalty Acre. Mineral ownership standardized to a 100% royalty based on the actual number of Gross Mineral Acres in which such owner has an interest. For example, an owner who has a 25%, or 1/4th, royalty in 100 Gross Mineral Acres would hypothetically own 25 Net Royalty Acres (100 acres multiplied by 25%).

NGL. Natural gas liquid.

Northern Delaware Basin. The northern geographic region of the Delaware Basin consisting of portions of Eddy and Lea counties, New Mexico, and Loving, Reeves and Culberson counties, Texas, collectively.

Notes. The $500.0 million aggregate principal amount of 6.25% fixed-rate senior unsecured notes due 2030 issued by DBR Land Holdings LLC on November 25, 2025.

NYMEX. The New York Mercantile Exchange.

OpCo. DBR Land Holdings LLC, a Delaware limited liability company.

Operator. The individual or company responsible for the development and/or production of an oil or natural gas well.

Permian Basin. A large sedimentary basin located in West Texas and southeastern New Mexico.

Produced water. Water produced from an oil and natural gas well alongside crude oil and natural gas.

Produced water handling facilities. Facilities utilized for the treatment, handling and disposal of produced water.

Rod. A unit of measure equal to 16.5 feet that is measured in linear feet.

Royalty. A real property interest that entitles the owner the right to receive a portion of the production (or the proceeds therefrom) produced from the underlying real property or a payment for the use of such underlying real property, and does not require the owner to pay any portion of the production or development costs.

Sand mine. An area of land from which sand is being mined.

Speed Acquisition. The acquisition of the Speed Ranch on May 10, 2024, from a private third-party seller.

Speed Ranch. Approximately 34,000 surface acres in Lea County, New Mexico and Andrews County, Texas, which were acquired on May 10, 2024, from a private third-party seller.

Spot Market Price. The cash market price without reduction for expected quality, transportation and demand adjustments.

SUAs. Surface use agreements.

SURAs. Surface use royalty agreements.

Unproved reserves. Reserves that are based on geoscience and/or engineering data similar to that used in estimates of proved reserves, but technical or other uncertainties preclude such reserves being classified as proved reserves.

Waha Gas market hub. A natural gas hub in the Permian Basin of West Texas.

WaterBridge. WaterBridge Infrastructure LLC, a Delaware limited liability company (NYSE: WBI), and its subsidiaries.

WaterBridge NDB. WaterBridge NDB Operating LLC, a Delaware limited liability company.

WaterBridge Operating. WaterBridge Operating LLC, a Delaware limited liability company.

Weighted average lease royalty percentage. An expression of our average lease royalty percentage weighted on an acreage basis.

Winkler County Acquisition. The acquisition of approximately 1,280 surface acres in Winkler County, Texas on November 1, 2024 from a private third-party seller.

Wolf Bone Acquisition. The acquisition of approximately 46,000 surface acres in Reeves and Pecos counties, Texas, on December 19, 2024, from a subsidiary of VTX Energy.

WTI. West Texas Intermediate, a grade of crude oil commonly used in reference to pricing for crude oil.