| Land | No Depreciation |
| Buildings and improvements | 30-50 years |
| Plant and production equipment | 10-40 years |
| Vehicles, furniture and fixtures, and other equipment | 4-10 years |
| All amounts Long / (Short) in thousands of U.S. dollars | As of December 31, | |
| Currency Exposure / Functional currency | 2024 | 2023 |
| Euro / U.S. dollar | (183,985) | (203,608) |
| Saudi Arabian Riyal / U.S. dollar | (173,233) | (181,931) |
| Argentine Peso / U.S. dollar | (40,565) | (134,716) |
| Brazilian Real / U.S. dollar | (41,591) | (25,680) |
| As of December 31, | ||||
| 2024 | 2023 | |||
| In thousands of U.S. | % | In thousands of U.S. dollars | % | |
| dollars | ||||
| Fixed rate (*) | 172,018 | 39% | 294,946 | 51% |
| Variable rate | 265,380 | 61% | 288,491 | 49% |
| Total | 437,398 | 583,437 | ||
| Carrying | Measurement Categories | At Fair Value | |||||
| December 31, 2024 | amount | Amortized | FVOCI | FVPL | Level 1 | Level 2 | Level 3 |
| Cost | |||||||
| Assets | |||||||
| Cash and cash equivalents | 675,256 | 320,212 | - | 355,044 | 355,044 | - | - |
| Other investments | 2,372,999 | 722,328 | 1,273,673 | 376,998 | 1,650,671 | - | - |
| Fixed income (time-deposit, zero | |||||||
| coupon bonds, commercial papers) | 722,328 | 722,328 | - | - | - | - | - |
| Certificates of deposits | 582,142 | 582,142 | - | - | - | - | - |
| Commercial papers | 130,034 | 130,034 | - | - | - | - | - |
| Other notes | 10,152 | 10,152 | - | - | - | - | - |
| Bonds and other fixed income | 1,273,673 | - | 1,273,673 | - | 1,273,673 | - | - |
| U.S. government securities | 645,841 | - | 645,841 | - | 645,841 | - | - |
| Non-U.S. government securities | 31,383 | - | 31,383 | - | 31,383 | - | - |
| Corporates securities | 586,229 | - | 586,229 | 586,229 | - | - | |
| Other notes | 10,220 | 10,220 | 10,220 | ||||
| Mutual Fund | 376,998 | - | - | 376,998 | 376,998 | - | - |
| Derivative financial instruments | 7,484 | - | - | 7,484 | - | 7,484 | - |
| Other Investments Non-current | 1,005,300 | 140,292 | 857,959 | 7,049 | 857,959 | - | 7,049 |
| Bonds and other fixed income | 857,959 | - | 857,959 | - | 857,959 | - | - |
| Fixed income (time-deposit, zero | |||||||
| coupon bonds, commercial papers) | 140,292 | 140,292 | - | - | - | - | - |
| Other investments | 7,049 | - | - | 7,049 | - | - | 7,049 |
| Trade receivables | 1,907,507 | 1,907,507 | - | - | - | - | - |
| Receivables C and NC | 435,973 | 191,058 | - | - | - | - | - |
| Other receivables | 191,058 | 191,058 | - | - | - | - | - |
| Other receivables (non-financial) | 244,915 | - | - | - | - | - | - |
| Total | 3,281,397 | 2,131,632 | 746,575 | 2,863,674 | 7,484 | 7,049 | |
| Liabilities | |||||||
| Borrowings C and NC | 437,398 | 437,398 | - | - | - | - | - |
| Trade payables | 880,261 | 880,261 | - | - | - | - | - |
| Other liabilities C and NC | 887,526 | 31,985 | - | 243,264 | - | - | 243,264 |
| Other liabilities (*) | 275,249 | 31,985 | - | 243,264 | - | - | 243,264 |
| Other liabilities (non-financial) | 612,277 | - | - | - | - | - | - |
| Lease Liabilities C and NC | 144,926 | 144,926 | - | - | - | - | - |
| Derivative financial instruments | 8,300 | - | - | 8,300 | - | 8,300 | - |
| Total | 1,494,570 | - | 251,564 | - | 8,300 | 243,264 | |
| Carrying | Measurement Categories | At Fair Value | |||||
| December 31, 2023 | amount | Amortized | FVOCI | FVPL | Level 1 | Level 2 | Level 3 |
| Cost | |||||||
| Assets | |||||||
| Cash and cash equivalents | 1,637,821 | 1,414,397 | - | 223,424 | 223,424 | - | - |
| Other investments | 1,969,631 | 896,166 | 834,281 | 239,184 | 1,073,465 | - | - |
| Fixed income (time-deposit, zero | |||||||
| coupon bonds, commercial | |||||||
| papers) | 896,166 | 896,166 | - | - | - | - | - |
| U.S. Sovereign Bills | 282,225 | 282,225 | - | - | - | - | - |
| Certificates of deposits | 334,637 | 334,637 | - | - | - | - | - |
| Commercial papers | 196,708 | 196,708 | - | - | - | - | - |
| Other notes | 82,596 | 82,596 | - | - | - | - | - |
| Bonds and other fixed income | 834,281 | - | 834,281 | - | 834,281 | - | - |
| U.S. government securities | 126,399 | - | 126,399 | - | 126,399 | - | - |
| Non-U.S. government securities | 10,943 | - | 10,943 | - | 10,943 | - | - |
| Corporates securities | 696,939 | - | 696,939 | - | 696,939 | - | - |
| Mutual Fund | 239,184 | - | - | 239,184 | 239,184 | - | - |
| Derivative financial instruments | 9,801 | - | - | 9,801 | - | 9,801 | - |
| Other Investments Non-current | 405,631 | - | 398,220 | 7,411 | 398,220 | - | 7,411 |
| Bonds and other fixed income | 398,220 | - | 398,220 | - | 398,220 | - | - |
| Other investments | 7,411 | - | - | 7,411 | - | - | 7,411 |
| Trade receivables | 2,480,889 | 2,480,889 | - | - | - | - | - |
| Receivables C and NC | 414,778 | 93,144 | - | - | - | - | - |
| Other receivables | 93,144 | 93,144 | - | - | - | - | - |
| Other receivables (non-financial) | 321,634 | - | - | - | - | - | - |
| Total | 4,884,596 | 1,232,501 | 479,820 | 1,695,109 | 9,801 | 7,411 | |
| Liabilities | |||||||
| Borrowings C and NC | 583,437 | 583,437 | - | - | - | - | - |
| Other liabilities C and NC | 693,913 | - | - | 86,240 | - | - | 86,240 |
| Other liabilities (*) | 86,240 | - | - | 86,240 | - | - | 86,240 |
| Other liabilities (non-financial) | 607,673 | - | - | - | - | - | - |
| Trade payables | 1,107,567 | 1,107,567 | - | - | - | - | - |
| Lease Liabilities C and NC | 134,433 | 134,433 | - | - | - | - | - |
| Derivative financial instruments | 11,150 | - | - | 11,150 | - | 11,150 | - |
| Total | 1,825,437 | - | 97,390 | - | 11,150 | 86,240 | |
| Year ended December 31, | ||
| 2024 | 2023 | |
| At the beginning of the year | 7,411 | 54,987 |
| Decrease (*) | (185) | (47,467) |
| Currency translation adjustment and others | (177) | (109) |
| At the end of the year | 7,049 | 7,411 |
| Year ended December 31, | ||
| 2024 | 2023 | |
| At the beginning of the year | 86,240 | - |
| Settlement of share buy back program liability | (86,240) | - |
| Increase in share buyback program liability | 243,264 | 86,240 |
| At the end of the year | 243,264 | 86,240 |
| Year ended December 31, 2024 | Tubes | Other | Total |
| Management view - operating income | 2,391 | 143 | 2,534 |
| Difference in cost of sales | (115) | ||
| Differences in selling, general and administrative expenses | (3) | ||
| Differences in other operating income (expenses), net | 3 | ||
| IFRS - operating income | 2,419 | ||
| Financial income (expense), net | 129 | ||
| Income before equity in earnings of non-consolidated companies and income tax | 2,548 | ||
| Equity in earnings of non-consolidated companies | 9 | ||
| Income before income tax | 2,557 | ||
| Net Sales | 11,907 | 617 | 12,524 |
| Depreciation and amortization | 580 | 53 | 633 |
| Year ended December 31, 2023 | Tubes | Other | Total |
| Management view - operating income | 4,337 | 129 | 4,466 |
| Difference in cost of sales | (134) | ||
| Differences in selling, general and administrative expenses | (7) | ||
| Differences in other operating income (expenses), net | (9) | ||
| IFRS - operating income | 4,316 | ||
| Financial income (expense), net | 221 | ||
| Income before equity in earnings of non-consolidated companies and income tax | 4,537 | ||
| Equity in earnings of non-consolidated companies | 95 | ||
| Income before income tax | 4,633 | ||
| Net Sales | 14,185 | 684 | 14,869 |
| Depreciation and amortization | 518 | 31 | 549 |
| Year ended December 31, 2022 | Tubes | Other | Total |
| Management view - operating income | 2,772 | 75 | 2,847 |
| Difference in cost of sales | 44 | ||
| Differences in depreciation and amortization | 2 | ||
| Differences in selling, general and administrative expenses | (4) | ||
| Differences in other operating income (expenses), net | 74 | ||
| IFRS - operating income | 2,963 | ||
| Financial income (expense), net | (6) | ||
| Income before equity in earnings of non-consolidated companies and income tax | 2,957 | ||
| Equity in earnings of non-consolidated companies | 209 | ||
| Income before income tax | 3,166 | ||
| Net Sales | 11,133 | 630 | 11,763 |
| Depreciation and amortization | 588 | 20 | 608 |
| Asia Pacific, | ||||||
| North | South | Europe | Middle East | Unallocated | Total | |
| America | America | and Africa | (**) | |||
| (*) | ||||||
| Year ended December 31, 2024 | ||||||
| Net sales | 5,558,769 | 2,621,581 | 1,262,458 | 3,081,126 | - | 12,523,934 |
| Property, plant and equipment, net | 3,578,293 | 1,257,345 | 832,443 | 453,390 | - | 6,121,471 |
| Intangible Assets, net | 1,117,314 | 177,934 | 14,899 | 47,602 | - | 1,357,749 |
| Right of Use Assets, net | 65,105 | 8,255 | 28,242 | 47,266 | - | 148,868 |
| Investments in non-consolidated companies | - | - | - | - | 1,543,657 | 1,543,657 |
| Year ended December 31, 2023 | ||||||
| Net sales | 7,765,130 | 3,382,495 | 1,175,581 | 2,545,654 | - | 14,868,860 |
| Property, plant and equipment, net | 3,676,352 | 1,143,752 | 794,242 | 463,833 | - | 6,078,179 |
| Intangible Assets, net | 1,126,774 | 166,450 | 22,580 | 61,306 | - | 1,377,110 |
| Right of Use Assets, net | 50,128 | 9,241 | 24,832 | 47,937 | - | 132,138 |
| Investments in non-consolidated companies | - | - | - | - | 1,608,804 | 1,608,804 |
| Year ended December 31, 2022 | ||||||
| Net sales | 6,902,787 | 2,550,402 | 1,000,833 | 1,308,504 | - | 11,762,526 |
| Property, plant and equipment, net | 3,548,844 | 1,031,423 | 706,539 | 269,457 | - | 5,556,263 |
| Intangible Assets, net | 1,102,265 | 147,102 | 7,598 | 75,543 | - | 1,332,508 |
| Right of Use Assets, net | 37,022 | 12,141 | 15,208 | 47,370 | - | 111,741 |
| Investments in non-consolidated companies | - | - | - | - | 1,540,646 | 1,540,646 |
| Revenues Tubes | 2024 | 2023 | 2022 |
| Oil & gas | 10,689 | 12,488 | 9,543 |
| Oil & gas processing plants | 548 | 818 | 738 |
| Industrial, power and others | 670 | 879 | 852 |
| Total | 11,907 | 14,185 | 11,133 |
| Year ended December 31, | |||
| 2024 | 2023 | 2022 | |
| Inventories at the beginning of the year | 3,921,097 | 3,986,929 | 2,672,593 |
| Change in inventory due to business combinations (*) | 52,792 | 107,588 | - |
| Plus: Charges of the year | |||
| Raw materials, energy, consumables and other | 4,638,681 | 5,277,507 | 5,772,031 |
| Services and fees | 408,478 | 437,804 | 293,490 |
| Labor cost | 1,454,924 | 1,403,546 | 1,160,085 |
| Depreciation of property, plant and equipment | 483,535 | 424,373 | 465,849 |
| Amortization of intangible assets | 12,193 | 11,582 | 11,754 |
| Depreciation of right-of-use assets | 34,332 | 30,352 | 33,244 |
| Maintenance expenses | 443,498 | 408,410 | 267,294 |
| Allowance for obsolescence | 41,240 | 13,581 | 24,901 |
| Taxes | 124,500 | 272,120 | 194,736 |
| Other | 230,161 | 216,220 | 178,691 |
| 7,924,334 | 8,603,083 | 8,402,075 | |
| Less: Inventories at the end of the year | (3,709,942) | (3,921,097) | (3,986,929) |
| 8,135,489 | 8,668,915 | 7,087,739 | |
| Year ended December 31, | |||
| 2024 | 2023 | 2022 | |
| Services and fees | 183,659 | 163,723 | 148,331 |
| Labor cost | 705,849 | 652,820 | 518,500 |
| Depreciation of property, plant and equipment | 25,668 | 21,517 | 21,883 |
| Amortization of intangible assets | 41,557 | 40,761 | 59,018 |
| Depreciation of right-of-use assets | 35,569 | 19,925 | 15,975 |
| Freights and other selling expenses | 624,113 | 696,705 | 641,812 |
| Provisions for contingencies | 30,356 | 38,899 | 20,606 |
| Allowances for doubtful accounts | (1,095) | 3,590 | (223) |
| Taxes | 152,388 | 170,484 | 121,410 |
| Other | 106,764 | 110,883 | 87,263 |
| 1,904,828 | 1,919,307 | 1,634,575 | |
| Year ended December 31, | |||
| 2024 | 2023 | 2022 | |
| Wages, salaries and social security costs | 2,033,067 | 1,943,825 | 1,594,200 |
| Severance indemnities | 35,608 | 26,470 | 29,070 |
| Post-employment benefits - defined contribution plans | 16,014 | 15,055 | 13,256 |
| Post-employment benefits - defined benefit plans | 24,259 | 19,452 | 16,320 |
| Employee retention and long-term incentive program | 51,825 | 51,564 | 25,739 |
| 2,160,773 | 2,056,366 | 1,678,585 | |
| 2024 | 2023 | 2022 | |
| Mexico | 6,042 | 7,500 | 5,919 |
| Argentina | 5,811 | 6,267 | 6,444 |
| USA | 3,583 | 3,882 | 3,509 |
| Italy | 2,140 | 2,187 | 2,136 |
| Romania | 1,885 | 1,884 | 1,847 |
| Brazil | 1,406 | 1,492 | 1,460 |
| Canada | 1,197 | 1,195 | 944 |
| Indonesia | 911 | 1,573 | 495 |
| Colombia | 893 | 1,112 | 1,183 |
| Saudi Arabia | 759 | 849 | 427 |
| Other | 1,247 | 1,193 | 928 |
| 25,874 | 29,134 | 25,292 |
| Year ended December 31, | |||
| 2024 | 2023 | 2022 | |
| Other operating income | |||
| Results from sundry assets | 10,529 | 10,960 | 28,161 |
| Net rents | 4,417 | 4,702 | 5,084 |
| Reclassification of currency translation adjustment reserve | - | 878 | 71,252 |
| Bargain purchase gain | 2,212 | 3,162 | - |
| Result on sale of Venezuela awards | - | 33,341 | - |
| Other income | 43,492 | - | - |
| 60,650 | 53,043 | 104,497 | |
| Other operating expenses | |||
| Contributions to welfare projects and non-profit organizations | (17,657) | (15,538) | (13,668) |
| Allowance for doubtful receivables | (546) | (107) | (346) |
| Securities Exchange Commission investigation settlement | - | - | (78,100) |
| Provision for the ongoing litigation related to the acquisition of | |||
| participation in Usiminas | (107,215) | - | - |
| Other expense | - | (1,628) | (12,595) |
| (125,418) | (17,273) | (104,709) | |
| Other operating income and expenses, net | (64,768) | 35,770 | (212) |
| Year ended December 31, | |||
| 2024 | 2023 | 2022 | |
| Interest income | 229,835 | 201,852 | 86,112 |
| Net result on changes in FV of financial assets at FVPL | 12,484 | 11,622 | (6,092) |
| Finance income | 242,319 | 213,474 | 80,020 |
| Finance cost | (61,212) | (106,862) | (45,940) |
| Net foreign exchange transactions results | 61,395 | 218,383 | 15,654 |
| Net foreign exchange derivatives contracts results | (12,727) | (8,974) | (25,666) |
| Other | (100,719) | (95,044) | (30,108) |
| Other financial results, net | (52,051) | 114,365 | (40,120) |
| Net financial results | 129,056 | 220,977 | (6,040) |
| Year ended December 31, | |||
| 2024 | 2023 | 2022 | |
| Earnings from non-consolidated companies | 8,548 | 104,897 | 242,743 |
| Remeasurement of previously held interest | - | 4,506 | - |
| Bargain purchase gain | - | 11,487 | - |
| Impairment loss on non-consolidated companies | - | - | (34,041) |
| Net loss related to participation increase in Usiminas | - | (25,486) | - |
| 8,548 | 95,404 | 208,702 | |
| Year ended December 31, | |||
| 2024 | 2023 | 2022 | |
| Current tax | (651,769) | (868,695) | (589,706) |
| Deferred tax | 172,089 | 193,739 | (27,530) |
| Tax charge | (479,680) | (674,956) | (617,236) |
| Year ended December 31, | |||
| 2024 | 2023 | 2022 | |
| Income before income tax | 2,556,453 | 4,632,789 | 3,165,937 |
| Tax calculated at the tax rate in each country | (599,944) | (1,127,428) | (705,727) |
| Effect of currency translation on tax base | (340,094) | (346,573) | (187,186) |
| Changes in the tax rates | (24,019) | 1,535 | (3,422) |
| Utilization of previously unrecognized tax losses | 588 | 787 | 29,560 |
| Tax revaluation, withholding tax and others | 483,789 | 796,723 | 249,539 |
| Tax charges | (479,680) | (674,956) | (617,236) |
| Industrial | Vehicles, | |||||
| Land | buildings, | furniture | Work in | Spare | ||
| and civil | plant and | and | progress | parts and | Total | |
| buildings | production | fixtures | equipment | |||
| Year ended December 31, 2024 | equipment | |||||
| Cost | ||||||
| Values at the beginning of the year | 889,957 | 13,538,273 | 416,913 | 396,103 | 71,834 | 15,313,080 |
| Currency translation adjustment | (5,336) | (94,711) | (2,952) | (4,391) | (350) | (107,740) |
| Changes due to business combinations (*) | 12,949 | (24,063) | - | 653 | - | (10,461) |
| Additions | 2,176 | 1,028 | 433 | 616,218 | 15,658 | 635,513 |
| Transfers / Reclassifications | 47,989 | 548,790 | 31,275 | (633,440) | - | (5,386) |
| Disposals / Consumptions | (12,031) | (65,775) | (21,627) | (2,153) | (5,704) | (107,290) |
| Values at the end of the year | 935,704 | 13,903,542 | 424,042 | 372,990 | 81,438 | 15,717,716 |
| Depreciation and impairment | ||||||
| Accumulated at the beginning of the year | 164,894 | 8,696,044 | 351,309 | - | 22,654 | 9,234,901 |
| Currency translation adjustment | (699) | (67,918) | (2,686) | - | (189) | (71,492) |
| Depreciation charge | 16,266 | 457,264 | 20,707 | - | 14,966 | 509,203 |
| Transfers / Reclassifications | (333) | (2,101) | 1,594 | - | - | (840) |
| Disposals / Consumptions | (1,834) | (53,249) | (20,444) | - | - | (75,527) |
| Accumulated at the end of the year | 178,294 | 9,030,040 | 350,480 | - | 37,431 | 9,596,245 |
| At December 31, 2024 | 757,410 | 4,873,502 | 73,562 | 372,990 | 44,007 | 6,121,471 |
| Industrial | Vehicles, | |||||
| Land | buildings, | furniture | Work in | Spare | ||
| and civil | plant and | and | progress | parts and | Total | |
| buildings | production | fixtures | equipment | |||
| Year ended December 31, 2023 | equipment | |||||
| Cost | ||||||
| Values at the beginning of the year | 815,763 | 12,857,494 | 402,485 | 252,379 | 55,526 | 14,383,647 |
| Currency translation adjustment | 1,863 | 53,282 | 1,675 | 1,462 | 199 | 58,481 |
| Increase due to business combinations (**) | 64,413 | 256,899 | 831 | 71,838 | - | 393,981 |
| Additions | 330 | 3,661 | 820 | 546,515 | 19,671 | 570,997 |
| Transfers / Reclassifications | 12,031 | 435,550 | 22,530 | (471,381) | - | (1,270) |
| Disposals / Consumptions | (4,443) | (68,613) | (11,428) | (4,710) | (3,562) | (92,756) |
| Values at the end of the year | 889,957 | 13,538,273 | 416,913 | 396,103 | 71,834 | 15,313,080 |
| Depreciation and impairment | ||||||
| Accumulated at the beginning of the year | 152,272 | 8,313,971 | 340,526 | - | 20,615 | 8,827,384 |
| Currency translation adjustment | 390 | 38,074 | 1,584 | - | 105 | 40,153 |
| Depreciation charge | 12,256 | 411,861 | 19,839 | - | 1,934 | 445,890 |
| Transfers / Reclassifications | (16) | (391) | 27 | - | - | (380) |
| Disposals / Consumptions | (8) | (67,471) | (10,667) | - | - | (78,146) |
| Accumulated at the end of the year | 164,894 | 8,696,044 | 351,309 | - | 22,654 | 9,234,901 |
| At December 31, 2023 | 725,063 | 4,842,229 | 65,604 | 396,103 | 49,180 | 6,078,179 |
| Information | Licenses, | Customer | |||
| system | patents and | Goodwill | relationships | Total | |
| Year ended December 31, 2024 | projects | trademarks (*) | |||
| Cost | |||||
| Values at the beginning of the year | 648,887 | 560,549 | 2,488,381 | 1,790,680 | 5,488,497 |
| Currency translation adjustment | (4,049) | (10) | (67) | (13) | (4,139) |
| Changes due to business combinations (**) | - | - | (13,621) | (14,590) | (28,211) |
| Additions | 43,445 | 14,998 | - | - | 58,443 |
| Transfers / Reclassifications | 4,584 | 70 | - | - | 4,654 |
| Disposals | (31,262) | - | - | (40) | (31,302) |
| Values at the end of the year | 661,605 | 575,607 | 2,474,693 | 1,776,037 | 5,487,942 |
| Amortization and impairment | |||||
| Accumulated at the beginning of the | |||||
| year | 576,722 | 407,217 | 1,384,674 | 1,742,774 | 4,111,387 |
| Currency translation adjustment | (3,764) | (6) | - | (11) | (3,781) |
| Amortization charge | 22,664 | 9,100 | - | 21,986 | 53,750 |
| Transfers / Reclassifications | 108 | - | - | - | 108 |
| Disposals | (31,231) | - | - | (40) | (31,271) |
| Accumulated at the end of the year | 564,499 | 416,311 | 1,384,674 | 1,764,709 | 4,130,193 |
| At December 31, 2024 | 97,106 | 159,296 | 1,090,019 | 11,328 | 1,357,749 |
| Information | Licenses, | Customer | |||
| system | patents and | Goodwill | relationships | Total | |
| Year ended December 31, 2023 | projects | trademarks (*) | |||
| Cost | |||||
| Values at the beginning of the year | 614,474 | 550,991 | 2,469,726 | 1,762,042 | 5,397,233 |
| Currency translation adjustment | 2,233 | 2 | 39 | - | 2,274 |
| Increase due to business combinations (***) | 105 | 116 | 18,616 | 28,638 | 47,475 |
| Additions | 39,375 | 9,073 | - | - | 48,448 |
| Transfers / Reclassifications | 437 | 367 | - | - | 804 |
| Disposals | (7,737) | - | - | - | (7,737) |
| Values at the end of the year | 648,887 | 560,549 | 2,488,381 | 1,790,680 | 5,488,497 |
| Amortization and impairment | |||||
| Accumulated at the beginning of the | |||||
| year | 561,119 | 398,417 | 1,384,674 | 1,720,515 | 4,064,725 |
| Currency translation adjustment | 2,140 | 1 | - | - | 2,141 |
| Amortization charge | 21,285 | 8,799 | - | 22,259 | 52,343 |
| Transfers / Reclassifications | (86) | - | - | - | (86) |
| Disposals | (7,736) | - | - | - | (7,736) |
| Accumulated at the end of the year | 576,722 | 407,217 | 1,384,674 | 1,742,774 | 4,111,387 |
| At December 31, 2023 | 72,165 | 153,332 | 1,103,707 | 47,906 | 1,377,110 |
| Tubes Segment | |||
| CGU | Hydril Acquisition | Other | Total |
| Tamsa | 346 | 19 | 365 |
| Siderca | 265 | 93 | 358 |
| Hydril | 309 | - | 309 |
| Other | - | 58 | 58 |
| Total | 920 | 170 | 1,090 |
| Industrial | |||||
| Land and | Buildings, | Vehicles, | |||
| Civil | Plant and | furniture and | Others | Total | |
| Buildings | Production | fixtures | |||
| Year ended December 31, 2024 | Equipment | ||||
| Cost | |||||
| Opening net book amount | 66,464 | 148,380 | 43,217 | 3,668 | 261,729 |
| Currency translation adjustment | (167) | (439) | (692) | - | (1,298) |
| Additions | 16,034 | 52,040 | 22,663 | 584 | 91,321 |
| Transfers / Reclassifications | (5,027) | 5,027 | - | - | - |
| Disposals | (10,772) | (20,113) | (8,706) | - | (39,591) |
| At December 31, 2024 | 66,532 | 184,895 | 56,482 | 4,252 | 312,161 |
| Depreciation | |||||
| Accumulated at the beginning of the year | 27,972 | 75,567 | 25,229 | 823 | 129,591 |
| Currency translation adjustment | (68) | (283) | (412) | - | (763) |
| Depreciation charge | 20,448 | 34,719 | 13,786 | 948 | 69,901 |
| Transfers / Reclassifications | (1,514) | 1,550 | (36) | - | - |
| Disposals | (10,041) | (17,660) | (7,735) | - | (35,436) |
| Accumulated at the end of the year | 36,797 | 93,893 | 30,832 | 1,771 | 163,293 |
| At December 31, 2024 | 29,735 | 91,002 | 25,650 | 2,481 | 148,868 |
| Industrial | |||||
| Land and | Buildings, | Vehicles, | |||
| Civil | Plant and | furniture and | Others | Total | |
| Buildings | Production | fixtures | |||
| Year ended December 31, 2023 | Equipment | ||||
| Cost | |||||
| Opening net book amount | 43,570 | 125,677 | 30,291 | 1,182 | 200,720 |
| Currency translation adjustment | 99 | 243 | 263 | - | 605 |
| Increase due to business combinations (*) | 11,803 | 37 | 46 | - | 11,886 |
| Additions | 13,040 | 30,066 | 15,732 | 2,486 | 61,324 |
| Transfers / Reclassifications | 691 | - | (691) | - | - |
| Disposals | (2,739) | (7,643) | (2,424) | - | (12,806) |
| At December 31, 2023 | 66,464 | 148,380 | 43,217 | 3,668 | 261,729 |
| Depreciation | |||||
| Accumulated at the beginning of the year | 18,933 | 52,794 | 17,042 | 210 | 88,979 |
| Currency translation adjustment | 34 | 134 | 200 | - | 368 |
| Depreciation charge | 9,663 | 29,685 | 10,316 | 613 | 50,277 |
| Transfers / Reclassifications | 691 | - | (691) | - | - |
| Disposals | (1,349) | (7,046) | (1,638) | - | (10,033) |
| Accumulated at the end of the year | 27,972 | 75,567 | 25,229 | 823 | 129,591 |
| At December 31, 2023 | 38,492 | 72,813 | 17,988 | 2,845 | 132,138 |
| Year ended December 31, | ||
| 2024 | 2023 | |
| Opening net book amount | 134,433 | 112,177 |
| Changes due to business combinations (*) | (35) | 12,148 |
| Translation differences | (4,565) | 2,237 |
| Additions | 91,005 | 61,310 |
| Cancellations | (8,377) | (2,972) |
| Repayments (**) | (73,639) | (54,940) |
| Interest accrued | 6,104 | 4,473 |
| At December 31, | 144,926 | 134,433 |
| Year ended December 31, | ||
| 2024 | 2023 | |
| At the beginning of the year | 1,608,804 | 1,540,646 |
| Translation differences | (47,840) | 110,801 |
| Equity in earnings of non-consolidated companies | 8,548 | 79,411 |
| Dividends and distributions declared | (71,212) | (69,216) |
| Acquisition of non-consolidated companies | - | 22,661 |
| Decrease due to step-acquisition | - | (23,453) |
| Increase / (decrease) in equity reserves and others | 45,357 | (52,046) |
| At the end of the year | 1,543,657 | 1,608,804 |
| % ownership at December 31, | Book value at December 31, | ||||
| Company | Country of incorporation | 2024 | 2023 | 2024 | 2023 |
| a) Ternium (*) | Luxembourg | 11.46% | 11.46% | 1,377,911 | 1,430,616 |
| b) Usiminas (**) | Brazil | 3.96% | 3.96% | 102,812 | 123,654 |
| c) Techgen | Mexico | 22.00% | 22.00% | 59,782 | 53,556 |
| Others | 3,152 | 978 | |||
| 1,543,657 | 1,608,804 | ||||
| Ternium | ||
| 2024 | 2023 | |
| Non-current assets | 12,050,457 | 12,148,560 |
| Current assets | 11,078,090 | 12,030,544 |
| Total assets | 23,128,547 | 24,179,104 |
| Non-current liabilities | 3,157,819 | 3,566,643 |
| Current liabilities | 3,839,159 | 3,800,602 |
| Total liabilities | 6,996,978 | 7,367,245 |
| Total equity | 16,131,569 | 16,811,859 |
| Non-controlling interests | 4,163,383 | 4,393,264 |
| Revenues | 17,649,060 | 17,610,092 |
| Gross profit | 2,888,836 | 3,559,355 |
| Net (loss) / income for the year attributable to shareholders' equity | (53,672) | 676,043 |
| Other comprehensive income | 211,817 | 465,885 |
| Total comprehensive income | 158,145 | 1,141,928 |
| Usiminas | ||
| 2024 | 2023 | |
| Non-current assets | 3,623,996 | 4,591,763 |
| Current assets | 3,234,742 | 3,589,129 |
| Total assets | 6,858,738 | 8,180,892 |
| Non-current liabilities | 1,357,347 | 1,672,676 |
| Current liabilities | 772,412 | 1,139,031 |
| Total liabilities | 2,129,758 | 2,811,706 |
| Total equity | 4,728,980 | 5,369,186 |
| Non-controlling interests | 452,481 | 556,418 |
| Revenues | 4,800,787 | 5,531,985 |
| Gross profit | 308,043 | 357,845 |
| Net (loss) / income for the year attributable to shareholders' equity | (27,084) | 278,402 |
| Other comprehensive income | 31,564 | (72,062) |
| Total comprehensive income | 4,480 | 206,340 |
| Year ended December 31, | ||
| 2024 | 2023 | |
| Employee advances and loans | 9,120 | 7,395 |
| Tax credits (*) | 66,636 | 53,483 |
| Receivables from related parties | 69,843 | 69,820 |
| Legal deposits | 6,858 | 9,355 |
| Advances to suppliers and other advances | 37,434 | 27,043 |
| Others | 15,711 | 18,863 |
| 205,602 | 185,959 | |
| Year ended December 31, | ||
| 2024 | 2023 | |
| Finished goods | 1,332,646 | 1,401,754 |
| Goods in process | 993,294 | 1,068,956 |
| Raw materials | 504,124 | 569,837 |
| Supplies | 712,059 | 648,443 |
| Goods in transit | 370,993 | 441,217 |
| 3,913,116 | 4,130,207 | |
| Allowance for obsolescence, see note 25 (i) | (203,174) | (209,110) |
| 3,709,942 | 3,921,097 | |
| Year ended December 31, | ||
| 2024 | 2023 | |
| Prepaid expenses and other receivables | 53,318 | 56,564 |
| Government entities | 2,420 | 1,330 |
| Employee advances and loans | 11,695 | 14,316 |
| Advances to suppliers and other advances | 35,965 | 48,455 |
| Government tax refunds on exports | 16,969 | 8,210 |
| Receivables from related parties | 3,585 | 5,759 |
| Others | 58,756 | 50,173 |
| 182,708 | 184,807 | |
| Allowance for other doubtful accounts, see note 25 (i) | (3,094) | (3,439) |
| 179,614 | 181,368 | |
| Year ended December 31, | ||
| Current tax assets | 2024 | 2023 |
| Income tax assets | 135,621 | 122,257 |
| V.A.T. credits | 195,745 | 132,972 |
| Other prepaid taxes | 1,255 | 1,172 |
| 332,621 | 256,401 | |
| Year ended December 31, | ||
| Current tax liabilities | 2024 | 2023 |
| Income tax liabilities | 277,712 | 344,565 |
| V.A.T. liabilities | 16,599 | 60,047 |
| Other taxes | 71,981 | 83,665 |
| 366,292 | 488,277 | |
| Year ended December 31, | ||
| 2024 | 2023 | |
| Current accounts | 1,923,620 | 2,471,565 |
| Receivables from related parties | 32,012 | 58,370 |
| 1,955,632 | 2,529,935 | |
| Allowance for doubtful accounts, see note 25 (i) | (48,125) | (49,046) |
| 1,907,507 | 2,480,889 | |
| At December 31, 2024 | Trade | Not Due | Past due | |
| Receivables | 1 - 180 days | > 180 days | ||
| Guaranteed | 288,388 | 254,777 | 33,341 | 270 |
| Not guaranteed | 1,667,244 | 1,305,338 | 298,988 | 62,918 |
| Guaranteed and not guaranteed | 1,955,632 | 1,560,115 | 332,329 | 63,188 |
| Expected loss rate | 0.03% | 0.01% | 0.09% | 0.33% |
| Allowance for doubtful accounts | (525) | (147) | (323) | (55) |
| Nominative allowance for doubtful accounts | (47,600) | - | (303) | (47,297) |
| Net Value | 1,907,507 | 1,559,968 | 331,703 | 15,836 |
| At December 31, 2023 | Trade | Not Due | Past due | |
| Receivables | 1 - 180 days | > 180 days | ||
| Guaranteed | 261,113 | 236,714 | 23,991 | 408 |
| Not guaranteed | 2,268,822 | 1,613,626 | 590,236 | 64,960 |
| Guaranteed and not guaranteed | 2,529,935 | 1,850,340 | 614,227 | 65,368 |
| Expected loss rate | 0.06% | 0.02% | 0.18% | 0.46% |
| Allowance for doubtful accounts | (1,636) | (312) | (1,249) | (75) |
| Nominative allowance for doubtful accounts | (47,410) | - | (748) | (46,662) |
| Net Value | 2,480,889 | 1,850,028 | 612,230 | 18,631 |
| Year ended December 31, | ||
| 2024 | 2023 | |
| Cash and cash equivalents | ||
| Cash at banks | 290,901 | 370,487 |
| Liquidity funds | 355,044 | 223,424 |
| Short-term investments | 29,311 | 1,043,910 |
| 675,256 | 1,637,821 | |
| Other investments - current | ||
| Fixed income (time-deposit, zero coupon bonds, commercial papers) | 722,328 | 896,166 |
| Bonds and other fixed income | 1,273,673 | 834,281 |
| Fund investments | 376,998 | 239,184 |
| 2,372,999 | 1,969,631 | |
| Other investments - non-current | ||
| Bonds and other fixed income | 857,959 | 398,220 |
| Fixed income (time-deposit, zero coupon bonds, commercial papers) | 140,292 | - |
| Others | 7,049 | 7,411 |
| 1,005,300 | 405,631 | |
| Year ended December 31, | ||
| 2024 | 2023 | |
| Non-current | ||
| Bank borrowings | 11,399 | 48,304 |
| 11,399 | 48,304 | |
| Current | ||
| Bank borrowings | 411,541 | 513,909 |
| Bank overdrafts | 14,458 | 21,224 |
| 425,999 | 535,133 | |
| Total Borrowings | 437,398 | 583,437 |
| At December 31, 2024 | 1 year or less | 1 - 2 years | 2 – 3 years | Over 3 years | Total |
| Borrowings | 425,999 | 11,399 | - | - | 437,398 |
| Total borrowings | 425,999 | 11,399 | - | - | 437,398 |
| Interest to be accrued | 6,270 | 672 | - | - | 6,942 |
| Total | 432,269 | 12,071 | - | - | 444,340 |
| At December 31, 2023 | 1 year or less | 1 - 2 years | 2 – 3 years | Over 3 years | Total |
| Borrowings | 535,133 | 46,804 | 1,500 | - | 583,437 |
| Total borrowings | 535,133 | 46,804 | 1,500 | - | 583,437 |
| Interest to be accrued | 10,510 | 3,533 | 283 | - | 14,326 |
| Total | 545,643 | 50,337 | 1,783 | - | 597,763 |
| In millions of U.S. dollars | ||||
| Disbursement date | Borrower | Type | Final maturity | Outstanding |
| 2024 | Tubos de Acero de Mexico S.A. | Bilateral | 2025 | 200 |
| 2024 | Tenaris Tubocaribe Ltda. | Bilateral | 2025 | 40 |
| 2017 | Global Pipe Company | Bilateral | 2026 | 26 |
| 2023 | Siderca SAIC | Bilateral | 2025 | 20 |
| 2024 | 2023 | |
| Total borrowings | 6.52% | 10.56% |
| Year ended December 31, | |||
| Currency | Interest rates | 2024 | 2023 |
| USD | Variable | - | 20,000 |
| SAR | Fixed | 9,903 | 23,803 |
| SAR | Variable | 1,496 | 4,501 |
| Total non-current borrowings | 11,399 | 48,304 | |
| Year ended December 31, | |||
| Currency | Interest rates | 2024 | 2023 |
| USD | Variable | 260,866 | 221,008 |
| USD | Fixed | 9,173 | 111,654 |
| BRL | Variable | - | 39,947 |
| EUR | Fixed | 14,278 | 25,104 |
| ARS | Fixed | 8,551 | 23,462 |
| SAR | Variable | 3,018 | 3,035 |
| SAR | Fixed | 130,113 | 110,923 |
| Total current borrowings | 425,999 | 535,133 | |
| Year ended December 31, 2024 | ||
| 2024 | 2023 | |
| At the beginning of the year | 583,437 | 728,762 |
| Translation differences | (6,805) | (74,806) |
| Proceeds and repayments, net | (128,761) | (211,797) |
| Interests accrued less payments | (3,707) | (2,691) |
| Increase due to business combinations (*) | - | 122,839 |
| Overdrafts variation | (6,766) | 21,130 |
| At the end of the year | 437,398 | 583,437 |
| Fixed assets | Inventories | Intangible assets | Total | |
| and other | ||||
| At the beginning of the year | 618,874 | 114,335 | 160,202 | 893,411 |
| Translation differences | (194) | (72) | (174) | (440) |
| Changes due to business combinations (*) | 1,223 | - | 2,033 | 3,256 |
| Charged to other comprehensive income | - | - | (904) | (904) |
| Income statement credit | (51,265) | (39,033) | (46,940) | (137,238) |
| At December 31, 2024 | 568,638 | 75,230 | 114,217 | 758,085 |
| Fixed assets | Inventories | Intangible assets | Total | |
| and other | ||||
| At the beginning of the year | 575,667 | 43,532 | 114,542 | 733,741 |
| Translation differences | 41 | 113 | 397 | 551 |
| Increase due to business combinations (**) | 4,175 | 7,563 | 5,498 | 17,236 |
| Charged to other comprehensive income | - | - | 138 | 138 |
| Income statement charge | 38,991 | 63,127 | 39,627 | 141,745 |
| At December 31, 2023 | 618,874 | 114,335 | 160,202 | 893,411 |
| Provisions | |||||
| and | Inventories | Tax losses | Other | Total | |
| allowances | |||||
| At the beginning of the year | 31,511 | 199,019 | 634,894 | 185,997 | 1,051,421 |
| Translation differences | (22) | (277) | (76) | (829) | (1,204) |
| Changes due to business combinations (*) | - | 88 | (414) | 1,821 | 1,495 |
| Charged to other comprehensive income | - | - | (2,006) | 885 | (1,121) |
| Income statement credit / (charge) | 24,436 | (44,915) | 82,400 | (27,070) | 34,851 |
| At December 31, 2024 | 55,925 | 153,915 | 714,798 | 160,804 | 1,085,442 |
| Provisions | |||||
| and | Inventories | Tax losses | Other | Total | |
| allowances | |||||
| At the beginning of the year | 25,817 | 180,152 | 310,589 | 156,984 | 673,542 |
| Translation differences | 6 | 24 | (1) | 611 | 640 |
| Increase due to business combinations (**) | 1,374 | 223 | 1,875 | 35,941 | 39,413 |
| Charged to other comprehensive income | - | - | - | 2,342 | 2,342 |
| Income statement credit / (charge) | 4,314 | 18,620 | 322,431 | (9,881) | 335,484 |
| At December 31, 2023 | 31,511 | 199,019 | 634,894 | 185,997 | 1,051,421 |
| Year ended December 31, | ||
| 2024 | 2023 | |
| Deferred tax assets to be recovered after 12 months | 755,743 | 655,415 |
| Deferred tax liabilities to be settled after 12 months | 696,693 | 689,976 |
| Year ended December 31, | ||
| 2024 | 2023 | |
| Deferred tax assets | 831,298 | 789,615 |
| Deferred tax liabilities | 503,941 | 631,605 |
| 327,357 | 158,010 | |
| Year ended December 31, | ||
| 2024 | 2023 | |
| At the beginning of the year | 158,010 | (60,199) |
| Translation differences | (764) | 89 |
| Changes due to business combinations (*) | (1,761) | 22,177 |
| Charged to other comprehensive income | (217) | 2,204 |
| Income statement credit | 172,089 | 193,739 |
| At the end of the year | 327,357 | 158,010 |
| Year ended December 31, | ||
| 2024 | 2023 | |
| Post-employment benefits | 131,564 | 117,506 |
| Other long-term benefits | 101,260 | 91,435 |
| Miscellaneous | 68,927 | 62,327 |
| 301,751 | 271,268 | |
| Year ended December 31, | ||
| 2024 | 2023 | |
| Unfunded | 129,032 | 112,532 |
| Funded | 2,532 | 4,974 |
| 131,564 | 117,506 | |
| Year ended December 31, | ||
| 2024 | 2023 | |
| Values at the beginning of the year | 112,532 | 103,822 |
| Current service cost | 7,206 | 6,537 |
| Interest cost | 14,692 | 11,707 |
| Curtailments and settlements | (131) | (675) |
| Remeasurements (*) | 7,506 | 8,899 |
| Translation differences | (6,865) | (12,687) |
| Increase due to business combinations (**) | - | 4,531 |
| Benefits paid from the plan | (8,345) | (8,762) |
| Other | 2,437 | (840) |
| At the end of the year | 129,032 | 112,532 |
| Year ended December 31, | ||
| 2024 | 2023 | |
| Discount rate | 3% - 8% | 3% - 7% |
| Rate of compensation increase | 2% - 6% | 2% - 5% |
| Year ended December 31, | ||
| 2024 | 2023 | |
| Present value of funded obligations | 91,698 | 123,234 |
| Fair value of plan assets | (102,653) | (134,052) |
| Asset (*) | (10,955) | (10,818) |
| Year ended December 31, | ||
| 2024 | 2023 | |
| At the beginning of the year | 123,234 | 116,617 |
| Translation differences | (5,627) | 1,940 |
| Current service cost | 176 | - |
| Interest cost | 5,424 | 5,715 |
| Remeasurements (*) | (182) | 2,142 |
| Increase due to business combinations (**) | - | 4,708 |
| Benefits paid | (8,300) | (8,459) |
| Other | (23,027) | 571 |
| At the end of the year | 91,698 | 123,234 |
| Year ended December 31, | ||
| 2024 | 2023 | |
| At the beginning of the year | (134,052) | (126,842) |
| Translation differences | 7,047 | (1,897) |
| Return on plan assets | (6,010) | (6,121) |
| Remeasurements | (302) | (4,225) |
| Increase due to business combinations (*) | - | (3,903) |
| Contributions paid to the plan | (1,269) | - |
| Benefits paid from the plan | 8,300 | 8,459 |
| Other | 23,633 | 477 |
| At the end of the year | (102,653) | (134,052) |
| Year ended December 31, | ||
| 2024 | 2023 | |
| Equity instruments | 3% | 18% |
| Debt instruments | 60% | 33% |
| Others (*) | 37% | 49% |
| Year ended December 31, | ||
| 2024 | 2023 | |
| Discount rate | 5% - 6% | 5% - 5% |
| Rate of compensation increase | 3% - 3% | 0% - 3% |
| Year ended December 31, | ||
| 2024 | 2023 | |
| Payroll and social security payable | 270,016 | 301,213 |
| Shares to be settled under buyback program | 243,264 | 86,240 |
| Miscellaneous | 72,495 | 35,192 |
| 585,775 | 422,645 | |
| Year ended December 31, | ||
| 2024 | 2023 | |
| Values at the beginning of the year | 101,453 | 98,126 |
| Translation differences | (11,718) | 4,260 |
| Changes due to business combinations (*) | (900) | 1,500 |
| Additional allowance | 10,077 | 1,901 |
| Reclassifications | (9,839) | (164) |
| Used and other movements | (6,967) | (4,170) |
| Values at the end of the year | 82,106 | 101,453 |
| Allowance for | Allowance for other | Allowance for | |
| Year ended December 31, 2024 | doubtful accounts - | doubtful accounts - | inventory |
| Trade receivables | Other receivables | obsolescence | |
| Values at the beginning of the year | (49,046) | (3,439) | (209,110) |
| Translation differences | 194 | 324 | 897 |
| Changes due to business combinations (*) | (1,151) | - | (3,676) |
| (Additional) / reversal allowances | 1,095 | (546) | (41,240) |
| Used and other movements | 783 | 567 | 49,955 |
| At December 31, 2024 | (48,125) | (3,094) | (203,174) |
| Allowance for | Allowance for other | Allowance for | |
| Year ended December 31, 2023 | doubtful accounts - | doubtful accounts - | inventory |
| Trade receivables | Other receivables | obsolescence | |
| Values at the beginning of the year | (45,495) | (3,479) | (222,666) |
| Translation differences | (128) | (88) | (452) |
| Increase due to business combinations (**) | (899) | - | (9,179) |
| (Additional) allowances | (3,590) | (107) | (13,581) |
| Used | 1,066 | 235 | 36,768 |
| At December 31, 2023 | (49,046) | (3,439) | (209,110) |
| Other claims and | |||
| Year ended December 31, 2024 | Sales risks | contingencies (*) | Total |
| Values at the beginning of the year | 19,940 | 16,019 | 35,959 |
| Translation differences | (1,301) | (18,978) | (20,279) |
| Changes due to business combinations (**) | - | 722 | 722 |
| Additional provisions | 21,296 | 106,198 | 127,494 |
| Reclassifications | - | 9,839 | 9,839 |
| Used | (23,564) | (10,827) | (34,391) |
| At December 31, 2024 | 16,371 | 102,973 | 119,344 |
| Other claims and | |||
| Year ended December 31, 2023 | Sales risks | contingencies (*) | Total |
| Values at the beginning of the year | 3,186 | 7,999 | 11,185 |
| Translation differences | 285 | (208) | 77 |
| Increase due to business combinations(**) | - | 5,317 | 5,317 |
| Additional provisions | 30,057 | 6,941 | 36,998 |
| Reclassifications | - | 164 | 164 |
| Used | (13,588) | (4,194) | (17,782) |
| At December 31, 2023 | 19,940 | 16,019 | 35,959 |
| Year ended December 31, | ||
| 2024 | 2023 | |
| Other derivatives | 7,484 | 9,801 |
| Contracts with positive fair values | 7,484 | 9,801 |
| Other derivatives | (8,300) | (11,150) |
| Contracts with negative fair values | (8,300) | (11,150) |
| Total | (816) | (1,349) |
| Purchase currency | Sell currency | Term | Fair Value | Hedge Accounting Reserve | ||
| 2024 | 2023 | 2024 | 2023 | |||
| BRL | USD | 2025 | (2,818) | 49 | 1,776 | 49 |
| EUR | USD | 2025 | (2,551) | 5,557 | (2,091) | 624 |
| USD | BRL | 2025 | 1,579 | (1,009) | - | - |
| USD | CAD | 2025 | 1,465 | (836) | - | - |
| USD | EUR | 2025 | 1,089 | (2,966) | 383 | 7,142 |
| MXN | USD | 2025 | 770 | - | - | - |
| USD | KWD | 2025 | 569 | (50) | - | (388) |
| USD | MXN | 2025 | (282) | (2,125) | - | - |
| USD | NGN | 2025 | (212) | - | - | - |
| USD | COP | 2025 | 202 | - | - | - |
| USD | GBP | 2025 | 134 | (51) | - | - |
| USD | CNY | 2025 | 73 | (335) | - | 501 |
| RON | USD | 2025 | (31) | 261 | - | - |
| Others | 2025 | 5 | (49) | 120 | - | |
| Total | (8) | (1,554) | 188 | 7,928 | ||
| Commodity Derivatives | Term | Fair Value | Hedge Accounting Reserve | ||
| 2024 | 2023 | 2024 | 2023 | ||
| LME Scrap | 2025 | (1,974) | 1,376 | (1,974) | 1,376 |
| PSV Gas | 2025 | 1,097 | (2,566) | 1,097 | (2,566) |
| Nickel | 2025 | 52 | 1,966 | 52 | 1,966 |
| Houston Ship Channel Gas | 2025 | 34 | (231) | 34 | (231) |
| Electric Energy | 2025 | (17) | (340) | (17) | (340) |
| Total | (808) | 205 | (808) | 205 | |
| Equity Reserve | Movements | Equity Reserve | Movements | Equity Reserve | |
| Dec-2022 | 2023 | Dec-2023 | 2024 | Dec-2024 | |
| Foreign Exchange & Commodities | 13,122 | (4,989) | 8,133 | (8,753) | (620) |
| Total Cash flow Hedge | 13,122 | (4,989) | 8,133 | (8,753) | (620) |
| Year ended December 31, | ||||
| 2024 | 2023 | 2022 | ||
| (i) | Changes in working capital (*) | |||
| Inventories | 184,996 | 186,903 | (1,329,865) | |
| Receivables and prepayments, contract assets and current tax assets | (60,456) | 64,000 | (155,449) | |
| Trade receivables | 550,334 | 153,920 | (1,208,278) | |
| Other liabilities | (100,133) | 28,275 | 57,389 | |
| Customer advances | (71,100) | (101,646) | 151,066 | |
| Trade payables | (216,724) | (149,024) | 353,892 | |
| 286,917 | 182,428 | (2,131,245) | ||
| (ii) | Income tax accruals less payments | |||
| Tax accrued | 479,680 | 674,956 | 617,236 | |
| Taxes paid | (702,190) | (818,347) | (359,585) | |
| (222,510) | (143,391) | 257,651 | ||
| (iii) | Interest accruals less payments, net | |||
| Interest accrued, net | (181,107) | (106,612) | (34,080) | |
| Interest received | 240,809 | 147,473 | 68,335 | |
| Interest paid | (60,769) | (94,341) | (32,775) | |
| (1,067) | (53,480) | 1,480 | ||
| Year ended December 31, | ||||
| (i) | Transactions | 2024 | 2023 | 2022 |
| (a) Sales of goods, services and other transactions | ||||
| Sales of goods to associated companies | 37,551 | 56,152 | 100,019 | |
| Sales of goods to other related parties | 83,250 | 121,679 | 151,884 | |
| Sales of services and others to associated companies | 3,456 | 1,564 | 1,472 | |
| Sales of services and others to joint ventures | 139 | 135 | 131 | |
| Sales of services and others to other related parties | 127,940 | 109,553 | 109,123 | |
| 252,336 | 289,083 | 362,629 | ||
| (b) Purchases of goods, services and other transactions | ||||
| Purchases of goods to associated companies | 154,772 | 324,556 | 555,257 | |
| Purchases of goods to joint ventures | 23,466 | 72,741 | 101,620 | |
| Purchases of goods to other related parties | 70,425 | 61,366 | 51,040 | |
| Purchases of services and others to associated companies | 17,544 | 13,349 | 13,759 | |
| Purchases of services and others to other related parties | 55,576 | 76,751 | 36,767 | |
| 321,783 | 548,763 | 758,443 | ||
| (c) Financial Results | ||||
| Income from joint ventures | 6,218 | 5,645 | 3,804 | |
| 6,218 | 5,645 | 3,804 | ||
| (d) Dividends | ||||
| Dividends received from associated companies | 71,211 | 69,216 | 64,189 | |
| Dividends distributed to Techint Holdings S.àr.l. | 478,115 | 385,347 | 321,122 | |
| At December 31, | |||
| (ii) | Period-end balances | 2024 | 2023 |
| (a) Arising from sales / purchases of goods / services and other | |||
| transactions | |||
| Receivables from associated companies | 3,133 | 7,589 | |
| Receivables from joint ventures | 68,759 | 63,374 | |
| Receivables from other related parties | 47,713 | 62,986 | |
| Payables to associated companies | (23,531) | (21,012) | |
| Payables to joint ventures | (52) | (28,361) | |
| Payables to other related parties | (12,165) | (11,488) | |
| 83,857 | 73,088 | ||
| (b) Financial debt | |||
| Finance lease liabilities from associated companies | (1,026) | (1,459) | |
| Finance lease liabilities from other related parties | (260) | (375) | |
| (1,286) | (1,834) | ||
| Year ended December 31, | |||
| 2024 | 2023 | 2022 | |
| Audit fees | 4,569 | 4,386 | 3,966 |
| Audit-related fees | 51 | 273 | 255 |
| Tax fees | 78 | 148 | - |
| All other fees | - | 14 | 11 |
| Total | 4,698 | 4,821 | 4,232 |
| Country of | Percentage of ownership | ||||
| Company | Incorporation | Main activity | at December 31, (*) | ||
| 2024 | 2023 | 2022 | |||
| ALGOMA TUBES INC. | Canada | Manufacturing of welded and seamless | 100% | 100% | 100% |
| steel pipes | |||||
| BREDERO SHAW INTERNATIONAL B.V. and | Netherlands | Holding company and supplier of pipe | 100% | 100% | NA |
| subsidiaries | coating services | ||||
| CONFAB INDUSTRIAL S.A. and subsidiaries | Brazil | Manufacturing of welded steel pipes | 100% | 100% | 100% |
| DALMINE S.p.A. and subsidiaries (a) | Italy | Manufacturing of seamless steel pipes | 100% | 100% | 100% |
| EXIROS B.V. and subsidiaries (b) | Netherlands | Procurement and trading services | 50% | 50% | 50% |
| HYDRIL COMPANY | USA | Manufacturing and marketing of | 100% | 100% | 100% |
| premium connections | |||||
| MAVERICK TUBE CORPORATION and subsidiaries | USA | Manufacturing of welded and seamless | 100% | 100% | 100% |
| steel pipes | |||||
| P.T. SEAMLESS PIPE INDONESIA JAYA | Indonesia | Manufacturing of seamless steel | 89% | 89% | 89% |
| products | |||||
| SILCOTUB S.A. | Romania | Manufacturing of seamless steel pipes | 100% | 100% | 100% |
| SAUDI STEEL PIPE CO. and subsidiaries (c) | Saudi Arabia | Manufacturing of welded steel pipes | 48% | 48% | 48% |
| SIAT SOCIEDAD ANONIMA | Argentina | Manufacturing of welded steel pipes | 100% | 100% | 100% |
| SIDERCA SOCIEDAD ANONIMA INDUSTRIAL Y | Argentina | Manufacturing of seamless steel pipes | 100% | 100% | 100% |
| COMERCIAL and subsidiaries (d) | |||||
| TALTA - TRADING E MARKETING SOCIEDADE | Portugal | Holding company | 100% | 100% | 100% |
| UNIPESSOAL LDA. | |||||
| TENARIS BAY CITY, INC. | USA | Manufacturing of welded and seamless | 100% | 100% | 100% |
| steel pipes | |||||
| TENARIS CONNECTIONS BV | Netherlands | Development, management and | 100% | 100% | 100% |
| licensing of intellectual property | |||||
| TENARIS FINANCIAL SERVICES S.A. | Uruguay | Financial operations | 100% | 100% | 100% |
| TENARIS GLOBAL SERVICES (CANADA) INC. | Canada | Marketing of steel products | 100% | 100% | 100% |
| TENARIS GLOBAL SERVICES (U.S.A.) | USA | Marketing of steel products | 100% | 100% | 100% |
| CORPORATION | |||||
| TENARIS GLOBAL SERVICES (UK) LTD | United | Holding company and marketing of | 100% | 100% | 100% |
| Kingdom | steel products | ||||
| TENARIS GLOBAL SERVICES S.A. and subsidiaries | Uruguay | Marketing, distribution of steel products | 100% | 100% | 100% |
| and holding company | |||||
| TENARIS INVESTMENTS (NL) B.V. and subsidiaries | Netherlands | Holding company | 100% | 100% | 100% |
| TENARIS GLOBAL SERVICES and INVESTMENTS | Marketing and distribution of steel | ||||
| S.àr.l. and subsidiaries | Luxembourg | products, financial operations and | 100% | 100% | 100% |
| holding company | |||||
| TENARIS QINGDAO STEEL PIPES LTD. | China | Processing of premium joints, couplings | 100% | 100% | 100% |
| and automotive components | |||||
| TENARIS TUBOCARIBE LTDA. | Colombia | Manufacturing of welded and seamless | 100% | 100% | 100% |
| steel pipes | |||||
| TUBOS DE ACERO DE MEXICO, S.A. and | Mexico | Manufacturing of seamless steel pipes | 100% | 100% | 100% |
| subsidiaries | |||||
| Fair value of acquired assets and liabilities as of acquisition date (November 30, 2023) | Final | Preliminary |
| in Millions of USD: | ||
| Property, Plant and Equipment | 115 | 126 |
| Intangible assets | 14 | 29 |
| Working capital | (2) | (13) |
| Cash and Cash Equivalents | 20 | 21 |
| Provisions | (7) | (7) |
| Other assets and liabilities, net | 11 | 13 |
| Net assets acquired | 152 | 169 |
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