Investor Presentaiton

SUPPORTED BY SUSTAINABILITY INITIATIVES RESULTING IN DIRECT ECONOMIC AND ENVIRONMENTAL BENEFITS % CLINKER RATIO 88% 88% 88% 87% 86% 84% LOWER CLINKER RATIO TRANSLATES INTO LOWER CO2 EMISSIONS • GCC reduced clinker factor to an record 84% in 2023 · Blended cement represented a record 73% of cement production in 2023 Chihuahua and Samalayuca plants began to use pozzolans in 2023 91% 91% 91% 90% 89% 86% ● • Pueblo was fully converted to PLC in 2022 84% 84% 84% 84% 83% 81% 2018 2019 2020 2021 2022 2023 U.S. ■Mexico BLENDED CEMENT PRODUCTION Trident and Rapid City can produce PLC since 2022 Samalayuca plant produces and exports PLC to the U.S. since 2022 According with the ASTM Standard specifications for blended cements BLENDED CEMENT PRODUCTION BY PLANT 100% 82% 94% 92% 91% 88% 88% 36% GCC 21% 21% 23% 15% 23% 21% 23% 27% 35% 73% 2018 2019 2020 2021 2022 2023 ■GCC Pueblo Rapid City Tijeras Trident Chihuahua Samalayuca ■2022 ■2023 31 'Blended cement refers to PLC (Portland Limestone Cement) and pozzolanic cement

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