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ENRIQUE ESCALANTE, CEO MAIK STRECKER, CFOOCTOBER 28, 2026 Q3 2026 EARNINGS CONFERENCE CALL
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SAFE HARBOR STATEMENT This presentation has been prepared by GCC, S.A.B. de C.V. (together with its subsidiaries, “GCC”). Nothing within this presentation is intended to be taken by any person as investment advice, a recommendation to buy, hold or sell any security, or an offer to sell or a solicitation of offers to purchase any security. Information related with the market and the competitive position of GCC was obtained from public sources that GCC believes to be reliable; however, GCC does not make any representation as to its accuracy, validity, timeliness or completeness. GCC is not responsible for errors and/or omissions with respect to the information contained herein. Due to rounding, numbers presented throughout this presentation may not add up precisely to the totals provided and percentages may not precisely reflect the absolute figures.Forward Looking StatementsThis presentation includes forward-looking statements or information. These forward-looking statements may relate to GCC’s financial condition, results of operations, plans, objectives, future performance and business. All statements that are not clearly historical in nature are forward-looking, and the words “anticipate,” “believe,” “expect,” “estimate,” “intend,” “project” and similar expressions are generally intended to identify forward-looking statements. The information in this presentation, including but not limited to forward-looking statements, applies only as of the date of this presentation. GCC expressly disclaims any obligation or undertaking to update or revise the information, including any financial data and forward-looking statements. Any projections have been prepared based on GCC’s views as of the date of this presentation and include estimates as well as assumptions about future events, which may prove to be incorrect or may change over time. The projections have been prepared for illustrative purposes only and do not constitute a forecast. While the projections are based on assumptions that GCC believes are reasonable, they are subject to uncertainties, changes in economic, operational, political, legal or public health crises including COVID-19 and other circumstances and risks including, but not limited to broad trends in business and finance, legislation affecting GCC’s securities, exchange rates, interest rates, inflation, foreign trade restrictions and market conditions which may cause actual financial and other results to be materially different from the results expressed or implied by said projections.EBITDAWe define EBITDA as consolidated net income after adding back or subtracting, as the case may be: (1) depreciation and amortization; (2) net financing expense; (3) other non-operating expenses; (4) taxes; and (5) share of earnings in associates. In managing its business, GCC relies on EBITDA as a means of assessing operating performance. We believe that EBITDA enhances the understanding of financial performance and ability to satisfy principal and interest obligations with respect to indebtedness as well as to fund capital expenditures and working capital requirements. We also believe EBITDA is a useful basis of comparing results with those of other companies because it presents results of operations on a basis unaffected by capital structure and taxes. EBITDA, however, is not a measure of financial performance under IFRS or U.S. GAAP and should not be considered as an alternative to net income as a measure of operating performance or to cash flows from operating activities as a measure of liquidity. Our calculation of EBITDA may not be comparable to other companies’ calculation of similarly titled measures.Currency translations / physical volumesAll monetary amounts in this presentation are expressed in U.S. dollars ($ or US$). Currency translations from pesos into U.S. dollars use the average monthly exchange rates published by Central Bank of Mexico. These translations do not purport to reflect the actual exchange rates at which cross-currency transactions occurred or could have occurred.The average exchange rates (Pesos per U.S. dollar) used for recent periods are: Physical volumes are stated in metric tons (mt), millions of metric tons (mmt), cubic meters (m3), or millions of cubic meters (mm3). 2 Q326: 17.26-Q3 25: 18.649M26: 17.40-9M 25: 19.53
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•GCC marked its 85th anniversary •Entered Q3 with good momentum •Volume growth in July and August •September brought unusually heavy rainfall •Activity built through the summer shifted out of Q3 HIGHLIGHTS 3 Healthy customer backlogs U.S. cement volumes6% YTD Mexico cement volumes7.7% YTD
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PEOPLE •Conducted our Great Place to Work survey•Feedback will shape our talent priorities for 2027 •Generations of employees who built GCC•Teams who will lead the company forward •Enhancing our cybersecurity tools•Expanding training across the company 85th anniversary GPTW Strengthening capabilities 4
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DR. VAGÓN 5 •Partnered with Fundación Grupo México and the Chihuahua State Government •Free medical care, diagnostic services and medicine •Reaching communities where access can be limited •October focused on women’s health •18 wagons serving up to 500 people per day A HOSPITAL ON RAILS
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Increased the use of natural gas 6 PLANET Reduced coal in our energy mix Continuing projects to expand access to natural gas and alternative fuels Supporting the transition toward lower-carbon energy sources Improving supply reliability Reducing exposure to fuel-price volatility
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76% of sales 7 Q3 26 vs. Q3 259M 26 vs. 9M 25VolumesPricesVolumesPricesCement-0.5%-2.8%6.0%-2.8%Concrete-18.6%-2.2%1.7%4.1% U.S. OVERVIEW•Cement volumes remained essentially flat •Concrete volumes declined •2025 exceptional project activity •Weather disruption in September •Quarterly results in line with our expectations •Customer backlogs remain healthy
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•Supplying highway, paving and other transportation work•Backlog remains solid•U.S. policy direction supports transportation investment •Remain an important source of opportunities•Worked on four data center developments•Including the Meta project in El Paso•Participated in related infrastructure and power-generation work Data centers contributing to current demand Infrastructure our most active segment 8
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U.S. OVERVIEW •Customers followed established work programs •Oil-well cement a steady source of demand•Permian Basin and western markets•Optimistic about the 2027 outlook•Odessa capacity increases our ability to serve nearby markets Oil and gas activity at a good level•Built mobile capacity, technical expertise and customer relationships•Comparing against exceptional 2025 volumes•Continues to generate strong sales•2027 backlog already building up Wind energy an important source of demand 9 •High mortgage rates constrain affordability•Do not expect a meaningful change in 2026•Our near-term plans do not depend on its recovery Residential the most challenged segment
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For construction and oil-well cement, effective January 1US$12 per toncement price increase 10 Applying fuel surcharges to deliveries Pricing•U.S. pricing environment remained challenging •Reflect project and geographic mix effects •Imported cement continues to influence pricing •Inland footprint provides protection •Managing pricing market by market U.S. OVERVIEW
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24% of sales 11 Q3 26 vs. Q3 259M 26 vs. 9M 25VolumesPricesVolumesPricesCement4.7%3.2%7.7%0.9%Concrete-7.8%2.7%-1.0%4.6% MEXICO OVERVIEW •Sales grew during Q3•Rainfall affected September activities•Retail, self-construction and residential the strongest segments•Vivienda para el Bienestar represents additional growth•Infrastructure remained strong•Long-term industrial outlook remains attractive
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Shipping construction and oil well cementCAPITAL ALLOCATION Slowly pacing the ramp up in line with customer demand Replacing higher-cost shipments to TexasFirst customer sales from the new Odessa production line 12 Improving freight economics
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13 Integrating businesses across Texas•Acquired concrete operations in Midland-Odessa•Serve customers with cement, aggregates and concrete•Enhance the strategic value of the Odessa expansion•Create operating and logistics synergies CAPITAL ALLOCATION US$104 millionDeployed in acquisitions US$54 millionReturned to shareholders
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14 Short-term weather disruption Odessa now serving customers Integrated platform expanding Mexico gaining momentum 2027 project base taking shape Q3 2026 HIGHLIGHTS
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MAIK STRECKER, CFO FINANCIAL RESULTS
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34432878483395105 265314 Q3 25Q3 269M 259M 26 1,049 * Prices in local currency CONSOLIDATED NET SALES (US$ Million)United StatesMexico 1,147 439433 -1.2% 16 Q3 26 vs. Q3 259M 26 vs. 9M 25VolumesPrices*VolumesPrices*CementUnited States-0.5%-2.8%6.0%-2.8%Mexico4.7%3.2%7.7%0.9%ConcreteUnited States-18.6%-2.2%1.7%4.1%Mexico-7.8%2.7%-1.0%4.6% +9.3%
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•Lower U.S. cement pricing•Cost profile of acquired businesses•Higher diesel prices•Additional logistics costs•Elevated transfer freight279286 692774 Q3 25Q3 269M 259M 26 COST OF SALES% of sales (US$ Million) + 240 BPS63.7%66.1%+ 150 BPS66.0%67.5% 17 Reflecting:
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3034 89100 Q3 25Q3 269M 259M 26 + 100 BPS6.9%7.9%+ 20 BPS8.5%8.7% SG&A 18 % of sales (US$ Million) •Appreciation of the Mexican peso•Acquired operations•Annual salary adjustments•Structural savings achieved in 2025 remain embedded Reflecting:
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158148 349368 Q3 25Q3 269M 259M 26 EBITDAEBITDA margin - 160 BPS35.9%34.3%- 120 BPS33.3%32.1% (US$ Million) EBITDA 19 -5.8% +5.5% •Shipment timing•Pricing and product mix effects•Transitional freight associated with Odessa Margin change reflects:
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148 8 7 (39)13 (17) 121 EBITDAQ3 26Interest incomeWorking capitaldecreaseTaxesAccrualsand othersMaintenanceCapExFree cash flowQ3 26 FREE CASH FLOW 20 US$ million 81.6%FCF conversion rate
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-0.55x-0.71x-0.47x-0.37x-0.51x Q3 25Q4 25Q1 26Q2 26Q3 26 NET LEVERAGE RATIO 21 Q3 26Q2 26Q3 25Q4 25Q1 26 US$888Mcash and equivalents US$27Mgrowth capital expenditures US$6Mshare buybacks
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2026 REVISEDGUIDANCE ConsolidatedEBITDA growthLow-single digit increaseFCF Conversion Rate> 60%Total CapExUS$220MStrategic & growthUS$150MMaintenanceUS$70MNet Debt/EBITDA year-endNegative 22 United StatesVolumesCementMid-single digit increaseConcreteLow-single digit increasePricesCementLow-single digit decreaseConcreteLow-single digit increaseMexicoVolumesCementMid-single digit increaseConcreteLow-single digit increasePricesCementLow-single digit increaseConcrete
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Our priorities Continue a disciplined ramping of Odessa 23 Maintain stability in a competitive environment Capture the network benefits Allocate capital toward attractive long-term returns
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24 CONTACT:Maik Strecker, Chief Financialand Planning Officermstrecker@gcc.com Sahory Ogushi, Head of InvestorRelationssoguship@gcc.com +52 (614) 4423176+ 1 (303) 7395943 QUESTIONS WWW.GCC.COM
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APPENDIX
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US$ millionQ3 26Q3 25Var9M 269M 25VarNet sales433.1 438.5 -1.2%1,147.0 1,048.9 9.3%Cost of sales286.4 279.2 2.6%773.7 692.5 11.7%SG&A 34.4 30.3 13.6%100.1 88.7 12.9%Other expenses, net1.5 1.2 27.2%3.8 4.6 -18.5%Operating income110.8 127.8 -13.3%269.4 263.2 2.4%Operating margin25.6%29.1%23.5%25.1%Net financing (expenses) income(10.6)9.0 n.m.(1.7)25.0 n.m.Earnings in associates0.2 0.5 -70.7%1.2 2.0 -38.2%Income taxes41.3 36.3 13.7%87.4 75.3 16.1%Consolidated net income59.0 101.1 -41.6%181.5 214.9 -15.5%EBITDA148.4 157.6 -5.8%368.5 349.3 5.5%EBITDA margin34.3%35.9%32.1%33.3% INCOME STATEMENT 26
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September 2026 September 2025VariationTotal assets3,803.53,466.89.7%Current assets1,320.61,268.04.1%Cash and equivalents887.7853.74.0%Other current assets432.9414.34.5%Non-current assets2,482.92,198.812.9%Property, plant and equipment1,926.71,733.411.2%Goodwill and intangibles322.0274.917.1%Other non-current assets234.2190.522.9%Total liabilities1,388.71,276.28.8%Short-term liabilities360.8317.813.5%Long-term liabilities1,027.9958.47.3%Long-term debt 625.2596.54.8%Other long-term liabilities104.175.138.6%Deferred taxes298.6286.74.1%Total equity2,414.82,190.610.2% BALANCE SHEET 27
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US$ millionQ3 26Q3 25Var9M 269M 25VarEBITDA 148.4 157.6 -5.8%368.5 349.3 5.5%Interest income (expense)8.3 7.9 5.5%13.4 22.8 -41.3%Decrease (increase) in working capital7.3 (15.2)n.m.(67.2)(65.5)2.6%Taxes (38.5)(9.1)n.m.(77.8)(42.1)84.8%Prepaid expenses(6.3)(5.6)12.6%(1.9)(1.7)9.0%Accruals and other accounts22.9 20.9 9.5%(5.2)(12.1)-57.2%Operating leases (IFRS 16 effect)(3.7)(3.5)4.6%(10.6)(10.1)5.2%Operating cash flow138.4 152.9 -9.5%219.2 240.6 -8.9%Maintenance CapEx(17.3)(20.3)-14.5%(47.3)(47.4)-0.2%Free cash flow 121.1 132.6 -8.7%171.9 193.2 -11.0%FCF conversion rate81.6%84.1%46.7%55.3% FREE CASH FLOW 28