LOMA NEGRA COMPANIA INDUSTRIAL ARGENTINA SOCIEDAD ANONIMA Stock Buenos Aires S.E.

Loma Negra Compania Industrial Argentina SA is an Argentina-based vertically integrated company active in the cement industry. It produces and distribute cement, masonry cement, aggregates, concrete, and lime, primarily used in private and public construction, to wholesale distributors, concrete producers, and industrial customers, among others. The Company operates five segments: Cement, masonry cement and lime Argentina, Cement Paraguay, Concrete, Aggregates, Railroad and Others. Cement, masonry cement and lime Argentina includes the cement, masonry cement and lime business in Argentina. Cement Paraguay includes the cement business in Paraguay. Concrete includes principally the production and sale of ready-mix concrete. Aggregates includes the production and sale of granitic aggregates. Railroad includes the provision of the railroad transportation service. Others includes the industrial waste treatment and recycling business to produce materials for use as fuel o raw material.