DORCHESTER MINERALS, L.P. Segments Disclosure

The Partnership manages its business activities on a consolidated basis and operates in a single operating and reportable segment. Operating segments are defined as components of a public entity that engages in business activities and for which discrete financial information and operating results are available and regularly reviewed by the chief operating decision maker in deciding how to allocate resources and assess performance. As disclosed in Note 1 – Business and Basis of Presentation, our business may be described as the acquisition, ownership and administration of Royalty Properties and the NPI. See Note 2 – Summary of Significant Accounting Policies for a summarization of the Partnerships revenue recognition policy.

The Partnership’s CEO has been determined to be the chief operating decision maker of the Partnership. The CEO uses Net income, as reported on our Consolidated Income Statements, to assess financial performance and allocate resources on a consolidated basis. The CEO manages and evaluates the results of the Partnership on a consolidated basis, and Net income is used to evaluate key operating decisions, such as making strategic acquisitions, determining transaction structures to capitalize on the development of the properties underlying our mineral interests, and allocating resources for general and administrative expenditures. The CEO does not review consolidated balance sheet assets when assessing segment performance and deciding how to allocate resources. Disaggregated operating revenues of the Partnership’s single segment and all significant segment expenses are presented separately on the Partnership’s Consolidated Income Statements. There are no other significant segment expenses or other segment items that would require disclosure.