Earnings release
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Sebastián Martí Ternium - Investor Relations +1 (866) 890 0443 +54 (11) 4018 8389 www.ternium.com Ternium Announces Third Quarter and First Nine Months of 2026 Results Luxembourg, November 3, 2026 – Ternium S.A. (NYSE: TX) today announced its results for the third quarter and first nine months ended September 30, 2026. The financial information contained in this press release is based on Ternium S.A.’s consolidated condensed interim financial statements prepared in accordance with IAS 34 “Interim financial reporting” (IFRS). Interim financial figures are unaudited. The financial and operational information is presented in U.S. dollars ($) and metric tons, except otherwise indicated. This press release includes certain non-IFRS alternative performance measures such as Adjusted EBITDA, Cash Operating Income, Free Cash Flow, Net Debt and Net Cash. The reconciliation of these figures to the most directly comparable IFRS measures is included in Exhibit I. Third Quarter of 2026 Highlights SHIPMENTS - STEEL PRODUCTS ADJUSTED EBITDA NET INCOME 4.0 MILLION TONS $785 MILLION $368 MILLION SHIPMENTS - MINING SEGMENT ADJUSTED EBITDA MARGIN EARNINGS PER ADS 2.8 MILLION TONS 16.9% $1.42 CASH PROVIDED BY OPERATING ACTIVITIES CAPEX INTERIM DIVIDEND ANNOUNCEMENT $613 MILLION $398 MILLION $0.90 PER ADS Note: Interim dividend figure compared to third quarter of 2025. Other figures compared to second quarter of 2026. Press Release 1
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Summary of Third Quarter of 2026 CONSOLIDATED 3Q26 2Q26 DIF 3Q25 DIF 9M26 9M25 DIF Steel Products Shipments (thousand tons) 4,044 3,858 5% 3,757 8% 11,610 11,333 2% Mining Segment Shipments (thousand tons) 2,832 3,347 -15% 3,207 -12% 9,005 9,589 -6% Net Sales ($ million) 4,644 4,340 7% 3,955 17% 12,919 11,834 9% Operating Income ($ million) 578 528 9% 215 168% 1,396 546 156% Adjusted EBITDA ($ million) 785 717 10% 420 87% 1,981 1,146 73% Adjusted EBITDA Margin (% of net sales) 16.9% 16.5% 10.6% 15.3% 9.7% Net Income (loss) ($ million) 368 465 (270) 1,205 132 Equity Holders’ Net Income ($ million) 279 344 21 836 303 Earnings per ADS ($) 1.42 1.75 0.10 4.26 1.54 Note: Each American Depositary Share, or ADS, represents 10 shares of Ternium’s common stock. Results are based on a weighted average number of shares of common stock outstanding (net of treasury shares) of 1,963,076,776. Third Quarter of 2026 Highlights Ternium reported solid earnings in the third quarter of 2026, with adjusted EBITDA increasing sequentially by 10% to $785 million, on higher steel sales volumes and margins. In Mexico, shipments to the commercial market continued their upward trend in the third quarter, accompanied by higher sales volumes to industrial customers. Steel shipments also increased sequentially in Brazil and the Southern Region, while remaining relatively stable in Other Markets. The company’s net income in the third quarter of 2026 reached $368 million, after deferred tax losses of $116 million mainly in connection with the effect of the depreciation of the Mexican Peso against the U.S. dollar on Ternium’s Mexican subsidiaries. Capital expenditures amounted to $398 million during the third quarter, with the construction of Ternium’s new slab mill in Pesquería, Mexico, continuing to advance according to plan. Cash from operating activities amounted to $613 million, after a $148 million increase in working capital driven mainly by higher realized steel prices and sales volumes, as well as higher raw material and purchased slab costs. Net Cash position at the end of September 2026 was $22 million, compared to Net Debt position of $112 million at the end of June 2026. 2
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Interim Dividend Payment Ternium’s board of directors approved the payment of an interim dividend of $0.90 per ADS ($0.09 per share), or $177 million based on total shares of common stock outstanding, net of treasury shares. The interim dividend payment date will be November 17, 2026, with record date on November 16, 2026. ANNUAL DIVIDEND $ PER ADS 2.70 3.30 2.70 2.20 0.90 1.10 0.90 0.90 0.90 1.80 2.20 1.80 1.30 2022 2023 2024 2025 2026 n Interim dividend Outlook Ternium anticipates Adjusted EBITDA in the fourth quarter of 2026 to remain broadly in line with the third quarter, as a modest seasonal decrease in steel shipments should be offset by a slightly higher margin per ton. Consolidated revenue per ton is expected to increase, more than offsetting higher cost per ton driven by raw material and slab costs. In Mexico, revenue per ton should continue to increase, in line with steel price trends in North America. Ternium is gaining market share by replacing imported steel in both the commercial and industrial markets. In addition, investments in data centers and gas pipeline infrastructure are expected to add to steel demand. In Brazil, Ternium expects a decline in shipments and a less favorable sales mix, leading to lower revenue per ton, while cost per ton should remain elevated, mainly reflecting raw material and energy costs. Iron ore sales volumes are also anticipated to decrease, reflecting the temporary idling of part of the mining operations of Mineração Usiminas (MUSA) in response to current international prices and freight rates. In the Southern Region, shipments are expected to remain relatively stable. Market conditions in Argentina are broadly unchanged from the previous quarter: oil and gas, mining and agriculture continue to be dynamic, while home appliances and automotive are still affected by weak domestic demand and unfairly traded imports, and construction has yet to recover. 3
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Analysis of Third Quarter of 2026 Results Consolidated Net Sales $ MILLION 3Q26 2Q26 DIF 3Q25 DIF 9M26 9M25 DIF Steel segment 4,529 4,192 8% 3,804 19% 12,535 11,417 10% Mining segment - third parties 116 148 -22% 151 -23% 383 417 -8% Total net sales 4,644 4,340 7 % 3,955 17 % 12,919 11,834 9 % Adjusted EBITDA Adjusted EBITDA in the third quarter of 2026 equals Net Income adjusted to exclude: ◦ Depreciation and amortization; ◦ Income tax results; ◦ Net financial results; ◦ Equity in earnings of non-consolidated companies; and ◦ Provision for ongoing litigation related to the acquisition of a participation in Usiminas. And adjusted to include the proportional EBITDA in Unigal (70% participation). Adjusted EBITDA margin equals Adjusted EBITDA divided by net sales. For more information see Exhibit I - Alternative performance measures - “Adjusted EBITDA”. ADJUSTED EBITDA $ MILLION 420 395 479 717 785 10.6% 10.5% 12.2% 16.5% 16.9% Adjusted EBITDA Adjusted EBITDA Margin (% net sales) 3Q25 4Q25 1Q26 2Q26 3Q26 4
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Steel Segment Third Quarter of 2026 Results The Steel Segment’s net sales increased both sequentially and year over year in the third quarter of 2026, driven by higher shipments and revenue per ton. Compared with the previous quarter, sales volumes increased in Mexico, Brazil and the Southern Region, while realized steel prices rose primarily in Mexico and Other Markets. Compared to the same period in 2025, shipment volumes grew mainly in Mexico, while realized steel prices increased across most regions. SHIPMENTS - STEEL PRODUCTS MILLION TONS 3.8 3.7 3.7 3.9 4.0 3Q25 4Q25 1Q26 2Q26 3Q26 NET SALES - STEEL SEGMENT $ BILLION 3.8 3.6 3.8 4.2 4.5 3Q25 4Q25 1Q26 2Q26 3Q26 In the third quarter of 2026, Ternium continued gaining market share in Mexico. Commercial market shipments maintained their upward trend during the period, posting significant year-over-year growth. In addition, sales volumes to industrial customers increased both sequentially and year over year. In Brazil and the Southern Region, sales volumes increased sequentially in the third quarter, but remained relatively stable on a year-over-year basis. In Other Markets, shipments in the third quarter of 2026 were broadly stable sequentially, while decreasing slightly on a year-over-year basis. SHIPMENTS BY REGION - STEEL PRODUCTS MILLION TONS Mexico Brazil Southern Region Other Markets 3Q25 4Q25 1Q26 2Q26 3Q26 0.0 0.5 1.0 1.5 2.0 2.5 5
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STEEL SEGMENT NET SALES ($ MILLION) SHIPMENTS (THOUSAND TONS) REVENUE/TON ($/TON) 3Q26 2Q26 DIF 3Q25 DIF 3Q26 2Q26 DIF 3Q25 DIF 3Q26 2Q26 DIF 3Q25 DIF Mexico 2,437 2,219 10% 1,803 35 % 2,181 2,082 5% 1,849 18% 1,118 1,066 5 % 975 15 % Brazil 1,016 989 3% 950 7 % 984 937 5% 994 -1% 1,033 1,055 -2 % 956 8 % Southern Region 599 551 9% 594 1 % 560 519 8% 557 1% 1,070 1,061 1 % 1,066 0 % Other Markets 413 378 9% 380 9 % 318 320 -1% 357 -11% 1,297 1,182 10 % 1,065 22 % Total Steel Products 4,466 4,137 8% 3,727 20 % 4,044 3,858 5% 3,757 8% 1,104 1,072 3 % 992 11 % Other Products 63 56 13% 76 -18 % Total Steel Segment 4,529 4,192 8% 3,804 19 % STEEL SEGMENT NET SALES ($ MILLION) SHIPMENTS (THOUSAND TONS) REVENUE/TON ($/TON) 9M26 9M25 DIF 9M26 9M25 DIF 9M26 9M25 DIF Mexico 6,641 5,350 24 % 6,245 5,545 13% 1,063 965 10 % Brazil 2,924 2,819 4 % 2,867 2,978 -4% 1,020 947 8 % Southern Region 1,631 1,744 -7 % 1,540 1,612 -4% 1,059 1,082 -2 % Other Markets 1,146 1,267 -10 % 958 1,198 -20% 1,196 1,057 13 % Total Steel Products 12,342 11,180 10 % 11,610 11,333 2% 1,063 986 8 % Other Products 193 237 -19 % Total Steel Segment 12,535 11,417 10 % In the third quarter of 2026, the Steel Segment’s Cash Operating Income rose by $104 million on a sequential basis and by $363 million on a year-over- year basis, driven by higher realized steel prices and sales volumes, partially offset by higher unit costs. The increase in cost per ton was mainly the result of higher raw material and purchased slab prices, partially offset by the company’s ongoing initiatives to improve efficiency. 6
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CASH OPERATING INCOME - STEEL SEGMENT $ MILLION 391 342 410 650 754 3Q25 4Q25 1Q26 2Q26 3Q26 CASH OPERATING INCOME PER TON AND MARGIN - STEEL SEGMENT $/TON, % 104 92 111 169 186 10% 9% 11% 16% 17% 3Q25 4Q25 1Q26 2Q26 3Q26 Note: For a reconciliation of the Steel Segment’s Cash Operating Income and Cash Operating Income per Ton and Margin to the most directly comparable IFRS measures, see Exhibit I - Alternative performance measures - “Cash Operating Income - Steel Segment”. Mining Segment Third Quarter of 2026 Results Net sales in the Mining Segment decreased by 18% sequentially in the third quarter of 2026, reflecting lower sales volumes and a slight decline in realized iron ore prices. Year-over-year, net sales decreased slightly in the third quarter, as the decline in sales volumes was mostly offset by higher realized iron ore prices. Sales volumes in the third quarter were affected by the temporary suspension of certain operations at Mineração Usiminas, following a deterioration in iron ore export profitability. SHIPMENTS - MINING SEGMENT MILLION TONS 3.2 3.4 2.8 3.3 2.8 Intercompany Third Parties 3Q25 4Q25 1Q26 2Q26 3Q26 NET SALES - MINING SEGMENT $ MILLION 268 309 284 316 259 Intercompany Third Parties 3Q25 4Q25 1Q26 2Q26 3Q26 7
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MINING SEGMENT NET SALES ($ MILLION) SHIPMENTS (THOUSAND TONS) REVENUE/TON ($/TON) 3Q26 2Q26 DIF 3Q25 DIF 3Q26 2Q26 DIF 3Q25 DIF 3Q26 2Q26 DIF 3Q25 DIF Third parties 116 148 -22% 151 -23% 1,670 2,004 -17% 2,017 -17 % 69 74 -6% 75 -7% Intercompany 144 168 -15% 117 22% 1,161 1,343 -14% 1,190 -2% 124 125 -1% 98 26% Total 259 316 -18% 268 -3% 2,832 3,347 -15% 3,207 -12% 92 94 -3% 84 10% MINING SEGMENT NET SALES ($ MILLION) SHIPMENTS (THOUSAND TONS) REVENUE/TON ($/TON) 9M26 9M25 DIF 9M26 9M25 DIF 9M26 9M25 DIF Third parties 383 417 -8% 5,137 5,788 -11% 75 72 3% Intercompany 476 411 16% 3,868 3,801 2% 123 108 14% Total 859 829 4% 9,005 9,589 -6% 95 86 10% The Mining Segment’s Cash Operating Income decreased sequentially in the third quarter of 2026, primarily driven by a decline in sales volumes and lower realized iron ore prices. On a year-over-year basis, Cash Operating Income rose slightly reflecting higher realized iron ore prices, which were largely offset by lower shipments and increased costs. CASH OPERATING INCOME - MINING SEGMENT $ MILLION 38 48 61 58 40 3Q25 4Q25 1Q26 2Q26 3Q26 CASH OPERATING INCOME PER TON AND MARGIN - MINING SEGMENT $/TON, % 12 14 22 17 14 14% 16% 22% 18% 16% 3Q25 4Q25 1Q26 2Q26 3Q26 Note: For a reconciliation of the Mining Segment’s Cash Operating Income and Cash Operating Income per Ton and Margin to the most directly comparable IFRS measures, see Exhibit I - Alternative performance measures - “Cash Operating Income - Mining Segment”. 8
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Net Financial Results Net financial results were a gain of $6 million for the third quarter of 2026. Foreign exchange results were a gain of $12 million, mainly reflecting the positive effect of the depreciation of the Mexican Peso against the U.S. dollar on a net short local currency position at Ternium’s subsidiaries in this country. $ MILLION 3Q26 2Q26 3Q25 9M26 9M25 Net interest result (8) (5) 3 0 18 Net foreign exchange result 12 (34) (34) (7) (38) Change in fair value of financial assets 7 1 8 19 54 Other financial expense, net (5) (2) (12) (23) (35) Net financial results 6 (39) (35) (11) (2) Income Tax Results Ternium’s subsidiaries use the U.S. dollar as their functional currency; as a result, fluctuations between their local currencies and the U.S. dollar lead to the recognition of deferred tax results. In the third quarter of 2026, the company recorded a deferred tax loss of $116 million mainly driven by the negative effect of the depreciation of the Mexican Peso against the U.S. dollar. $ MILLION 3Q26 2Q26 3Q25 9M26 9M25 Current income tax expense (99) (109) (13) (247) (85) Deferred tax (loss) gain (116) 86 (430) 102 (277) Income Tax Result (215) (23) (444) (145) (362) 9
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Net Income In the third quarter of 2026, Ternium’s net income amounted to $368 million after deferred tax losses of $116 million. Equity Holder’s Net Income was $279 million in the period, or $1.42 per ADS, mainly after accounting for the participation of a 62.5% non-controlling interest in Usiminas and a 37.4% non-controlling interest in Ternium Argentina. NET INCOME (LOSS) $ MILLION (270) 171 372 465 368 3Q25 4Q25 1Q26 2Q26 3Q26 $ MILLION 3Q26 2Q26 3Q25 9M26 9M25 Net income (loss) 368 465 (270) 1,205 132 Excluding non-controlling interest (88) (121) 290 (369) 171 Owners of the parent 279 344 21 836 303 $ per ADS 3Q26 2Q26 3Q25 9M26 9M25 Earnings per ADS 1.42 1.75 0.10 4.26 1.54 10
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Cash Flow and Liquidity In the third quarter of 2026, cash from operations amounted to $613 million after a $148 million increase in working capital. Trade and other receivables rose by a net $99 million in the period, largely driven by higher realized steel prices and sales volumes. Likewise, inventories rose by $88 million, reflecting higher unit costs, partially offset by lower steel volumes. These working capital additions were mitigated by a $39 million net increase in trade payables and other liabilities. Capital expenditures totaled $398 million in the period, primarily reflecting the progress made in the construction of the new slab mill at Ternium’s industrial center in Pesquería, Mexico. CASH FROM OPERATIONS, CHANGES IN WORKING CAPITAL $ BILLION 0.5 0.5 0.2 0.3 0.6 0.2 0.1 (0.2) (0.4) (0.1) 3Q25 4Q25 1Q26 2Q26 3Q26 n Cash from operations n Decrease (Increase) in working capital CAPITAL EXPENDITURES $ MILLION 711 463 406 431 398 3Q25 4Q25 1Q26 2Q26 3Q26 Ternium recorded a Net Cash position of $22 million as of the end of September 2026, compared to Net Debt position of $112 million as of the end of June 2026. Ternium’s Net Cash position as of the end of September included Ternium Argentina’s consolidated position of cash and cash equivalents and other investments of $725 million. During the third quarter of 2026, Ternium recognized a $74 million decline in the fair value of Argentine securities. NET (CASH) DEBT $ MILLION (715) (712) (327) (22) 112 3Q25 4Q25 1Q26 2Q26 3Q26 11
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Conference Call and Webcast Ternium will host a conference call on November 4, 2026, at 8:00am ET in which management will discuss third quarter of 2026 results. A webcast link will be available in the Investor Center section of the company’s website at www.ternium.com. Forward Looking Statements Some of the statements contained in this press release are “forward-looking statements”. Forward-looking statements are based on management’s current views and assumptions and involve known and unknown risks that could cause actual results, performance or events to differ materially from those expressed or implied by those statements. These risks include but are not limited to risks arising from uncertainties as to gross domestic product, related market demand, global production capacity, tariffs, cyclicality in the industries that purchase steel products, and other factors beyond Ternium’s control. About Ternium Ternium is a leading steel producer in the Americas, providing advanced steel products to a wide range of manufacturing industries and the construction sector. We invest in low carbon emissions steelmaking technologies to support the energy transition and the mobility of the future. We also support the development of our communities, especially through educational programs in Latin America. More information about Ternium is available at www.ternium.com. 12
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Income Statement $ MILLION 3Q26 2Q26 3Q25 9M26 9M25 Net sales 4,644 4,340 3,955 12,919 11,834 Cost of sales (3,608) (3,399) (3,346) (10,254) (10,085) Gross profit 1,037 941 608 2,664 1,749 Selling, general and administrative expenses (448) (428) (396) (1,266) (1,195) Other operating income (expense), net (11) 15 3 (2) (8) Operating income 578 528 215 1,396 546 Financial expense (53) (50) (53) (153) (164) Financial income 45 45 56 154 182 Other financial income (expense), net 14 (34) (37) (12) (19) Equity in earnings of non-consolidated companies 19 22 25 56 65 Provision for ongoing litigation related to the acquisition of a participation in Usiminas (20) (24) (32) (92) (117) Profit before income tax result 583 487 174 1,350 494 Income tax (215) (23) (444) (145) (362) Profit (loss) for the period 368 465 (270) 1,205 132 Attributable to: Owners of the parent 279 344 21 836 303 Non-controlling interest 88 121 (290) 369 (171) Profit (loss) for the period 368 465 (270) 1,205 132 13
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Statement of Financial Position $ MILLION SEPTEMBER 30, 2026 DECEMBER 31, 2025 Property, plant and equipment, net 11,194 10,406 Intangible assets, net 1,049 1,002 Investments in non-consolidated companies 626 563 Other investments 0 0 Deferred tax assets 1,215 1,039 Receivables, net 721 804 Trade receivables, net 5 4 Total non-current assets 14,812 13,819 Receivables, net 710 985 Derivative financial instruments 7 43 Inventories, net 4,483 4,094 Trade receivables, net 2,107 1,536 Other investments 1,760 1,600 Cash and cash equivalents 1,355 1,531 Total current assets 10,423 9,788 Non-current assets classified as held for sale 8 8 Total assets 25,243 23,615 14
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Statement of Financial Position (cont.) $ MILLION SEPTEMBER 30, 2026 DECEMBER 31, 2025 Capital and reserves attributable to the owners of the parent 12,541 11,944 Non-controlling interest 4,517 4,203 Total equity 17,058 16,148 Provisions 594 586 Deferred tax liabilities 31 24 Non current tax liabilities 6 13 Other liabilities 989 956 Trade payables 1 1 Lease liabilities 176 138 Borrowings 2,306 1,815 Total non-current liabilities 4,104 3,533 Provision for ongoing litigation related to the acquisition of a participation in Usiminas 619 528 Current income tax liabilities 126 39 Other liabilities 486 640 Trade payables 2,013 2,073 Derivative financial instruments 0 1 Lease liabilities 49 49 Borrowings 787 604 Total current liabilities 4,081 3,934 Total liabilities 8,185 7,467 Total equity and liabilities 25,243 23,615 15
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Statement of Cash Flows $ MILLION 3Q26 2Q26 3Q25 9M26 9M25 Result for the period 368 465 (270) 1,205 132 Adjustments for: Depreciation and amortization 198 194 197 572 578 Income tax accruals less payments 169 3 394 42 142 Equity in earnings of non-consolidated companies (19) (22) (25) (56) (65) Provision for ongoing litigation related to the acquisition of a participation in Usiminas 20 24 32 92 117 Interest accruals less payments / receipts, net (17) (4) (6) (27) (6) Changes in provisions 4 (10) 1 (5) 5 Changes in working capital (148) (418) 174 (798) 901 Net foreign exchange results and others 38 24 38 62 (17) Net cash provided by operating activities 613 256 535 1,086 1,786 Capital expenditures and advances to suppliers for PP&E (398) (431) (711) (1,235) (2,038) (Increase) decrease in other investments (529) 288 (24) (153) 538 Proceeds from the sale of property, plant & equipment 1 0 3 2 4 Dividends received from non-consolidated companies 1 1 2 3 4 Recovery of loans from non-consolidated companies — — — 150 — Acquisition of additional participation in Usiminas — — — (315) — Acquisition of business - purchase consideration — — — (24) — Acquisition of business - cash acquired — — — 4 — Repayment of additional paid in capital — — — — (5) Net cash used in investing activities (925) (142) (729) (1,568) (1,497) Dividends paid in cash to company’s shareholders — (255) — (255) (353) Dividends paid in cash to non-controlling interest — (36) — (43) (2) Finance lease payments (15) (18) (15) (48) (50) Proceeds from borrowings 334 29 71 768 653 Repayments of borrowings (77) (19) (387) (135) (934) Net cash provided by (used in) financing activities 242 (300) (330) 288 (686) Decrease in cash and cash equivalents (70) (186) (524) (195) (397) 16
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Exhibit I - Alternative Performance Measures These non-IFRS measures should not be considered in isolation of, or as a substitute for, measures of performance prepared in accordance with IFRS. These non-IFRS measures do not have a standardized meaning under IFRS and, therefore, may not correspond to similar non-IFRS financial measures reported by other companies. Adjusted EBITDA $ MILLION 3Q26 2Q26 3Q25 9M26 9M25 Net income 368 465 (270) 1,205 132 Adjusted to exclude: Depreciation and amortization 198 194 197 572 578 Income tax results 215 23 444 145 362 Net financial results (6) 39 35 11 2 Equity in earnings of non-consolidated companies (19) (22) (25) (56) (65) Provision for ongoing litigation related to the acquisition of a participation in Usiminas 20 24 32 92 117 Reversal of contingencies (Usiminas) — (12) — (12) — Adjusted to include: Proportional EBITDA in Unigal (70% participation) 9 7 8 24 21 Adjusted EBITDA 785 717 420 1,981 1,146 Divided by: net sales 4,644 4,340 3,955 12,919 11,834 Adjusted EBITDA Margin (%) 17 % 17 % 11 % 15 % 10 % 17
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Exhibit I - Alternative Performance Measures (cont.) Cash Operating Income - Steel Segment $ MILLION 3Q26 2Q26 3Q25 9M26 9M25 Operating Income - Management View (Note “Segment Information” to Ternium’s Financial Statements as of the corresponding dates) 504 410 333 1,185 766 Plus/minus differences in cost of sales (IFRS) 77 88 (96) 148 (202) Excluding depreciation and amortization 163 158 146 469 432 Excluding reversal of contingencies (Usiminas) — (12) — (12) — Including proportional EBITDA in Unigal (70% participation) 9 7 8 24 21 Cash Operating Income 754 650 391 1,814 1,018 Divided by: steel shipments (thousand tons) 4,044 3,858 3,757 11,610 11,333 Cash Operating Income per Ton - Steel 186 169 104 156 90 Divided by: steel net sales 4,529 4,192 3,804 12,535 11,417 Cash Operating Income Margin - Steel (%) 17% 16% 10% 14% 9% Cash Operating Income - Mining Segment $ MILLION 3Q26 2Q26 3Q25 9M26 9M25 Operating Result - Management View (Note “Segment Information” to Ternium’s Financial Statements as of the corresponding dates) (54) (33) (35) (112) (75) Plus/minus differences in cost of sales (IFRS) 59 55 23 168 77 Excluding depreciation and amortization 35 36 51 104 146 Cash Operating Income 40 58 38 160 148 Divided by: mining shipments (thousand tons) 2,832 3,347 3,207 9,005 9,589 Cash Operating Income per Ton - Mining 14 17 12 18 15 Divided by: mining net sales 259 316 268 859 829 Cash Operating Income Margin - Mining (%) 16% 18% 14% 19% 18% 18
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Exhibit I - Alternative Performance Measures (cont.) Free Cash Flow $ MILLION 3Q26 2Q26 3Q25 9M26 9M25 Net cash provided by operating activities 613 256 535 1,086 1,786 Less: capital expenditures and advances to suppliers for PP&E (398) (431) (711) (1,235) (2,038) Free Cash Flow 215 (175) (175) (149) (252) Net (Cash) Debt $ MILLION SEPTEMBER 30, 2026 JUNE 30, 2026 SEPTEMBER 30, 2025 Borrowings (current and non-current) 3,094 2,844 2,046 Less: Cash and cash equivalents (1,355) (1,431) (1,323) Less: Other investments (current and non-current) (1,760) (1,301) (1,438) Net (Cash) Debt (22) 112 (715) Note: Ternium Argentina’s consolidated position of cash and cash equivalents and other investments amounted to $0.7 billion as of September 30 and June 30, 2026, and $0.9 billion as of September 30, 2025. 19