FORM 6 - K

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

Report of Foreign Private Issuer

Pursuant to Rule 13a - 16 or 15d - 16 of

the Securities Exchange Act of 1934

As of 10/28/2025

Ternium S.A.

(Translation of Registrant's name into English)

Ternium S.A.
26 Boulevard Royal – 4th floor

L-2449 Luxembourg

(352) 2668-3152

(Address of principal executive offices)

Indicate by check mark whether the registrant files or will file annual reports under cover Form 20-F or 40-F.

Form 20-F a Form 40-F __

Indicate by check mark whether the registrant by furnishing the information contained in this Form is also thereby furnishing the information to the Commission pursuant to Rule 12G3-2(b) under the Securities Exchange Act of 1934.

Yes __ No a

If “Yes” is marked, indicate below the file number assigned to the registrant in connection with Rule 12g3-2(b):

Not applicable

The attached material is being furnished to the Securities and Exchange Commission pursuant to Rule 13a-16 and Form 6-K under the Securities Exchange Act of 1934, as amended.

This report contains Ternium S.A.’s consolidated financial statements as of September 30, 2025.

SIGNATURE

Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

TERNIUM S.A.


By: /s/ Guillermo Etchepareborda						By: /s/ Sebastián Martí
Name: Guillermo Etchepareborda						Name: Sebastián Martí
Title: Attorney in Fact						Title: Attorney in Fact

Dated: October 28, 2025




TERNIUM S.A.
Consolidated Condensed Interim Financial Statements
as of September 30, 2025
and for the nine-month periods
ended on September 30, 2025 and 2024



26 Boulevard Royal, 4th floor
L – 2449 Luxembourg
R.C.S. Luxembourg: B 98 668

INDEX


		Page

Consolidated Condensed Interim Income Statements		2
Consolidated Condensed Interim Statements of Comprehensive Income		3
Consolidated Condensed Interim Statements of Financial Position		4
Consolidated Condensed Interim Statements of Changes in Equity		5
Consolidated Condensed Interim Statements of Cash Flows		7
Notes to the Consolidated Condensed Interim Financial Statements
1	General information and basis of presentation	8
2	Accounting policies	8
3	Acquisition of business – Increase of the participation in Usiminas Control Group and new governance structure of Usiminas	9
4	Segment information	15
5	Cost of sales	17
6	Selling, general and administrative expenses	17
7	Finance expense, Finance income and Other financial income (expenses), net	18
8	Property, plant and equipment, net	18
9	Intangible assets, net	18
10	Investments in non-consolidated companies	19
11	Distribution of dividends	20
12	Income tax – Pillar Two	20
13	Contingencies, commitments and restrictions on the distribution of profits	20
14	Related party transactions	24
15	Financial instruments by category and fair value measurement	25
16	Foreign exchange restrictions in Argentina	26
17	Recently Announced Tariffs on Imports in the United States	27
18	Syndicated loan agreement Ternium Mexico S.A. de C.V.	28


			Page 1 of			28


TERNIUM S.A.
Consolidated Condensed Interim Financial Statements as of September 30, 2025
and for the nine-month periods ended September 30, 2025 and 2024
(All amounts in $ thousands)

Consolidated Condensed Interim Income Statements




		Three-month period ended September 30,		Nine-month period ended September 30,
	Notes	2025	2024	2025	2024
		(Unaudited)		(Unaudited)
Net sales	4	3,954,562	4,480,356	11,834,309	13,772,805
Cost of sales	5	(3,346,173)	(3,901,911)	(10,084,894)	(11,334,211)

Gross profit		608,389	578,445	1,749,415	2,438,594

Selling, general and administrative expenses	6	(396,271)	(412,028)	(1,195,371)	(1,277,773)
Other operating income (expense), net		3,282	9,081	(7,591)	60,054

Operating income	4	215,400	175,498	546,453	1,220,875

Finance expense	7	(53,336)	(54,149)	(163,996)	(144,057)
Finance income	7	55,860	71,323	181,809	227,253
Other financial (expense) income, net	7	(37,203)	56,988	(19,377)	(210,186)

Equity in earnings of non-consolidated companies	10	24,603	16,847	65,372	51,179



Provision for ongoing litigation related to the acquisition of a participation in Usiminas	13	(31,600)	(31,000)	(116,600)	(814,000)



Profit before income tax expense		173,724	235,507	493,661	331,064

Income tax expense	3(h) & 12	(443,593)	(142,802)	(361,884)	(490,054)

Profit for the period		(269,869)	92,705	131,777	(158,990)

Attributable to:
Owners of the parent		20,608	31,656	303,032	(334,525)
Non-controlling interest		(290,477)	61,049	(171,255)	175,535

Profit (Loss) for the period		(269,869)	92,705	131,777	(158,990)

Weighted average number of shares outstanding		1,963,076,776	1,963,076,776	1,963,076,776	1,963,076,776

Basic and diluted earnings per share for profit attributable to the equity holders of the company (expressed in $ per share)		0.01	0.02	0.15	(0.17)

The accompanying notes are an integral part of these consolidated condensed interim financial statements. These consolidated condensed interim financial statements should be read in conjunction with our audited Consolidated Financial Statements and notes for the year ended December 31, 2024.


			Page 2 of			28


TERNIUM S.A.
Consolidated Condensed Interim Financial Statements as of September 30, 2025
and for the nine-month periods ended September 30, 2025 and 2024
(All amounts in $ thousands)

Consolidated Condensed Interim Statements of Comprehensive Income




	Three-month period ended September 30,		Nine-month period ended September 30,
	2025	2024	2025	2024
	(Unaudited)		(Unaudited)
Profit (Loss) for the period	(269,869)	92,705	131,777	(158,990)

Items that may be reclassified subsequently to profit or loss:
Currency translation adjustment	84,340	58,048	456,595	(369,150)
Currency translation adjustment from participation in non-consolidated companies	10,804	7,798	56,985	(44,355)
Changes in the fair value of financial instruments at fair value through other comprehensive income	(108,078)	(44,562)	(281,332)	396,758
Income tax related to financial instruments at fair value	14,656	34,983	70,668	128,260
Changes in the fair value of derivatives classified as cash flow hedges	(17,601)	32,589	134,127	4,659
Income tax related to cash flow hedges	5,220	(10,205)	(40,172)	(1,633)



Items that will not be reclassified subsequently to profit or loss:
Remeasurement of post employment benefit obligations	2,497	(774)	2,643	(9,986)
Income tax relating to remeasurement of post employment benefit obligations	—	171	(55)	641
Remeasurement of post employment benefit obligations from participation in non-consolidated companies	—	—	4	53

Other comprehensive income for the period, net of tax	(8,162)	78,048	399,463	105,247

Total comprehensive income (loss) for the period	(278,031)	170,753	531,240	(53,743)

Attributable to:
Owners of the parent	(28,557)	59,402	360,845	(45,879)
Non-controlling interest	(249,474)	111,351	170,395	(7,864)

Total comprehensive income for the period	(278,031)	170,753	531,240	(53,743)


			Page 3 of			28


TERNIUM S.A.
Consolidated Condensed Interim Financial Statements as of September 30, 2025
and for the nine-month periods ended September 30, 2025 and 2024
(All amounts in $ thousands)

Consolidated Condensed Interim Statements of Financial Position


		Balances as of
	Notes	September 30, 2025		December 31, 2024
		(Unaudited)
ASSETS

Non-current assets
Property, plant and equipment, net	8	10,104,332		8,381,155
Intangible assets, net	9	1,017,821		1,022,111
Investments in non-consolidated companies	10	582,134		468,516
Other investments		304		22,979
Deferred tax assets	3	1,047,333		1,194,398
Receivables, net		904,130	13,656,054	961,298	12,050,457



Current assets
Receivables, net		873,676		772,726
Current income tax assets		190,425		129,713
Derivative financial instruments		75,419		4,483
Inventories, net		4,132,409		4,750,511
Trade receivables, net		1,774,679		1,562,058
Other investments		1,437,553		2,160,051
Cash and cash equivalents		1,322,885	9,807,046	1,691,263	11,070,805

Assets classified as held for sale			8,257		7,285

			9,815,303		11,078,090

Total Assets			23,471,357		23,128,547

EQUITY
Capital and reserves attributable to the owners of the parent			11,975,677		11,968,186

Non-controlling interest			4,324,568		4,163,383

Total Equity			16,300,245		16,131,569

LIABILITIES

Non-current liabilities
Provisions		614,087		552,600
Deferred tax liabilities		42,946		88,707
Non current tax liabilities		11,272		21,436
Other liabilities		855,745		765,961
Trade payables		1,124		5,402
Lease liabilities		161,484		163,666
Borrowings		1,494,443	3,181,101	1,560,047	3,157,819


Current liabilities
Provision for ongoing litigation related to the acquisition of a participation in Usiminas	13	526,800		410,200
Current income tax liabilities	12	30,445		106,883
Other liabilities		696,640		629,678
Trade payables		2,128,234		1,925,526
Derivative financial instruments		5,387		50,342
Lease liabilities		50,994		46,458
Borrowings		551,511	3,990,011	670,072	3,839,159

Total Liabilities			7,171,112		6,996,978

Total Equity and Liabilities			23,471,357		23,128,547


			Page 4 of			28


TERNIUM S.A.
Consolidated Condensed Interim Financial Statements as of September 30, 2025
and for the nine-month periods ended September 30, 2025 and 2024
(All amounts in $ thousands)

Consolidated Condensed Interim Statements of Changes in Equity


	Attributable to the owners of the parent
	Capital stock (1)	Treasury shares (1)	Initial public offering expenses	Reserves (2)	Capital stock issue discount (3)	Currency translation adjustment	Retained earnings	Total	Non-controlling interest	Total Equity


Balance as of January 1, 2025	2,004,743	(150,000)	(23,295)	1,342,753	(2,324,866)	(2,129,552)	13,248,403	11,968,186	4,163,383	16,131,569

Profit (Loss) for the period							303,032	303,032	(171,255)	131,777
Other comprehensive income (loss) for the period
Currency translation adjustment						104,503		104,503	409,077	513,580
Remeasurement of post employment benefit obligations				930				930	1,662	2,592
Cash flow hedges and others, net of tax				83,649				83,649	10,306	93,955
Others (4)				(131,269)				(131,269)	(79,395)	(210,664)

Total comprehensive income (loss) for the period	—	—	—	(46,690)	—	104,503	303,032	360,845	170,395	531,240

Dividends paid in cash (5)							(353,354)	(353,354)	—	(353,354)
Dividends paid in cash to non-controlling interest								—	(4,065)	(4,065)
Repayment of additional paid in capital (6)								—	(5,145)	(5,145)



Balance as of September 30, 2025 (unaudited)	2,004,743	(150,000)	(23,295)	1,296,063	(2,324,866)	(2,025,049)	13,198,081	11,975,677	4,324,568	16,300,245

(1) The Company has an authorized share capital of a single class of 3.5 billion shares having a nominal value of $ 1.00 per share. As of September 30, 2025, there were 2,004,743,442 shares issued. All issued shares are fully paid. Also, as of September 30, 2025, the Company held 41,666,666 shares as treasury shares.

(2) Includes legal reserve under Luxembourg law for $ 200.5 million, undistributable reserves under Luxembourg law for $ 1.4 billion and reserves related to the acquisition of non-controlling interest in subsidiaries for $ (72.4) million.

(3) Represents the difference between book value of non-monetary contributions received from shareholders under Luxembourg GAAP and IFRS.

(4) Includes mainly the changes of the fair value of financial instruments at fair value through other comprehensive income, net of tax.

(5) See note 11.

(6) It corresponds to the first installment of the agreement in connection with the repayment of the additional paid in capital from Tenigal S. de R.L. de C.V. to the non-controlling interest as per the shareholders’ agreement signed on June 25, 2025. The shareholders agreed to the repayment of the total amount of the additional paid in capital of $ 63 million in the upcoming three years, starting in June 2025.

Dividends may be paid by Ternium to the extent distributable retained earnings calculated in accordance with Luxembourg law and regulations exist. Therefore, retained earnings included in these consolidated condensed interim financial statements may not be wholly distributable.


			Page 5 of			28


TERNIUM S.A.
Consolidated Condensed Interim Financial Statements as of September 30, 2025
and for nine-month periods ended September 30, 2025 and 2024
(All amounts in $ thousands)

Consolidated Condensed Interim Statements of Changes in Equity


	Attributable to the owners of the parent
	Capital stock (1)	Treasury shares (1)	Initial public offering expenses	Reserves (2)	Capital stock issue discount (3)	Currency translation adjustment	Retained earnings	Total	Non-controlling interest	Total Equity


Balance as of January 1, 2024	2,004,743	(150,000)	(23,295)	965,211	(2,324,866)	(1,963,827)	13,910,629	12,418,595	4,393,264	16,811,859

Profit (Loss) for the period							(334,525)	(334,525)	175,535	(158,990)
Other comprehensive income (loss) for the period
Currency translation adjustment						(83,532)		(83,532)	(329,973)	(413,505)
Remeasurement of post employment benefit obligations				(3,258)				(3,258)	(6,034)	(9,292)
Cash flow hedges and others, net of tax				3,426				3,426	(400)	3,026
Others (4)				372,010				372,010	153,008	525,018

Total comprehensive (loss) income for the period	—	—	—	372,178	—	(83,532)	(334,525)	(45,879)	(7,864)	(53,743)

Dividends paid in cash							(431,877)	(431,877)	—	(431,877)





Balance as of September 30, 2024 (unaudited)	2,004,743	(150,000)	(23,295)	1,337,389	(2,324,866)	(2,047,359)	13,144,227	11,940,839	4,385,400	16,326,239

(1) The Company has an authorized share capital of a single class of 3.5 billion shares having a nominal value of $ 1.00 per share. As of September 30, 2024, there were 2,004,743,442 shares issued. All issued shares are fully paid. Also, as of September 30, 2024, the Company held 41,666,666 shares as treasury shares.

(3) Represents the difference between book value of non-monetary contributions received from shareholders under Luxembourg GAAP and IFRS.

(4) Includes mainly the changes of the fair value of financial instruments at fair value through other comprehensive income, net of tax.


			Page 6 of			28


TERNIUM S.A.
Consolidated Condensed Interim Financial Statements as of September 30, 2025
and for the nine-month periods ended September 30, 2025 and 2024
(All amounts in $ thousands)

Consolidated Condensed Interim Statements of Cash Flows


		Nine-month period ended September 30,
	Notes	2025	2024
		(Unaudited)
Cash flows from operating activities
Profit (Loss) for the period		131,777	(158,990)
Adjustments for:
Depreciation and amortization	8 & 9	577,918	554,423
Income tax accruals less payments	12	142,265	474,235
Equity in earnings of non-consolidated companies	10	(65,372)	(51,179)
Interest accruals less payments/receipts, net		(6,081)	(9,608)
Changes in provisions		5,413	(70,082)
Changes in working capital (1)		900,877	(273,179)
Net foreign exchange results and others		(17,307)	154,997
Provision for ongoing litigation related to the acquisition of a participation in Usiminas	13	116,600	814,000



Net cash provided by operating activities		1,786,090	1,434,617

Cash flows from investing activities
Capital expenditures	8 & 9	(2,038,020)	(1,304,313)
Decrease (Increase) in other investments		538,184	165,704
Proceeds from the sale of property, plant and equipment		4,115	1,713
Dividends received from non-consolidated companies		3,858	4,702







Repayment of additional paid in capital		(5,145)	—

Net cash used in investing activities		(1,497,008)	(1,132,194)

Cash flows from financing activities
Dividends paid in cash to company’s shareholders	11	(353,354)	(431,877)
Dividends paid in cash to non-controlling interest		(1,958)	(49,445)


Finance lease payments		(50,136)	(46,420)
Proceeds from borrowings		653,148	1,286,006
Repayments of borrowings		(934,010)	(1,183,402)

Net cash used in financing activities		(686,310)	(425,138)

Increase (Decrease) in cash and cash equivalents		(397,228)	(122,715)

Movement in cash and cash equivalents
At January 1,		1,691,263	1,846,013
Effect of exchange rate changes		28,850	(109,045)
Increase (Decrease) in cash and cash equivalents		(397,228)	(122,715)

Cash and cash equivalents as of September 30, (2)		1,322,885	1,614,253

Non-cash transactions:

Acquisition of PP&E under lease contract agreements		33,284	12,410

(1) The working capital is impacted by non-cash movements of $ 248.5 million as of September 30, 2025 ($ (174.1) million as of September 30, 2024) due to the variations in the exchange rates used by subsidiaries.

(2) It includes restricted cash of $ 2,926 and $ 3,665 as of September 30, 2025 and 2024, respectively. In addition, the Company had other investments with a maturity of more than three months for $ 1,437,701 and $ 2,269,999 as of September 30, 2025 and 2024, respectively.


			Page 7 of			28


TERNIUM S.A.
Consolidated Condensed Interim Financial Statements as of September 30, 2025
and for the nine-month periods ended September 30, 2025 and 2024

Notes to the Consolidated Condensed Interim Financial Statements

1.GENERAL INFORMATION AND BASIS OF PRESENTATION

Ternium S.A. (the “Company” or “Ternium”), was incorporated on December 22, 2003 to hold investments in flat and long steel manufacturing and distributing companies. The Company has an authorized share capital of a single class of 3.5 billion shares having a nominal value of $ 1.00 per share. As of September 30, 2025, there were 2,004,743,442 shares issued. All issued shares are fully paid.

Ternium’s American Depositary Shares (“ADS”), each representing 10 shares, trade on the New York Stock Exchange under the symbol “TX”.

The name and percentage of ownership of subsidiaries that have been included in consolidation in these Consolidated Condensed Interim Financial Statements are disclosed in Note 2 to the audited Consolidated Financial Statements for the year ended December 31, 2024.

The preparation of Consolidated Condensed Interim Financial Statements requires management to make estimates and assumptions that might affect the reported amounts of assets and liabilities and the disclosure of contingent assets and liabilities as of the date of the statement of financial position, and also the reported amounts of revenues and expenses for the reported periods. Actual results may differ from these estimates. The main assumptions and estimates were disclosed in the Consolidated Financial Statements for the year ended December 31, 2024, without significant changes since its publication.

2. ACCOUNTING POLICIES

These Consolidated Condensed Interim Financial Statements have been prepared in accordance with IAS 34, “Interim Financial Reporting” and are unaudited. These Consolidated Condensed Interim Financial Statements should be read in conjunction with the audited Consolidated Financial Statements for the year ended December 31, 2024, which have been prepared in accordance with IFRS Accounting Standards (International Financial Reporting Standards) as issued by the International Accounting Standards Board and in conformity with IFRS Accounting Standards as adopted by the European Union (“EU”). Recently issued accounting pronouncements were applied by the Company as from their respective dates.

These Consolidated Condensed Interim Financial Statements have been prepared following the same accounting policies used in the preparation of the audited Consolidated Financial Statements for the year ended December 31, 2024.

None of the accounting pronouncements issued after December 31, 2024, and as of the date of these Consolidated Condensed Interim Financial Statements have a material effect on the Company’s financial condition or result or operations.


			Page 8 of			28


TERNIUM S.A.
Consolidated Condensed Interim Financial Statements as of September 30, 2025
and for the nine-month periods ended September 30, 2025 and 2024

3. ACQUISITION OF BUSINESS – INCREASE OF THE PARTICIPATION IN USIMINAS CONTROL GROUP AND NEW GOVERNANCE STRUCTURE OF USIMINAS

(a) The participation in Usiminas as of June 30, 2023

On January 16, 2012, the Company’s subsidiaries, Ternium Investments and Ternium Argentina (together with its wholly-owned subsidiary Prosid Investments S.A., or "Prosid", and the Company’s affiliate, Confab Industrial S.A., a subsidiary of Tenaris, or TenarisConfab), joined the existing control group of Usiminas, a leading steel company in the Brazilian flat steel market, through the acquisition of 84.7, 30.0, and 25.0 million ordinary shares, respectively, and formed the so-called Ternium/Tenaris (T/T) Group.

On October 30, 2014, Ternium Investments acquired 51.4 million additional ordinary shares of Usiminas. On April 20, 2016, Ternium Investments subscribed to 7.0 million preferred shares of Usiminas and Ternium Argentina, together with Prosid, subscribed to an aggregate 1.5 million preferred shares of Usiminas. On July 19, 2016, Usiminas’ extraordinary general shareholders’ meeting homologated a capital increase, and Ternium Investments acquired 62.6 million additional ordinary shares, and Ternium Argentina and Prosid acquired an aggregate 13.8 million additional ordinary shares. As a result of these transactions, Ternium, through its subsidiaries Ternium Investments, Ternium Argentina and Prosid, owned as of June 30, 2023, 242.6 million ordinary shares of Usiminas (representing 34.4% of Usiminas’ ordinary shares) and 8.5 million of Usiminas’ preferred shares (representing 1.6% of Usiminas’ preferred shares), representing, in the aggregate, 20.4% of Usiminas’ share capital.

As of June 30, 2023, the Usiminas control group held, in the aggregate, 483.6 million ordinary shares bound to the Usiminas shareholders’ agreement, representing approximately 68.6% of Usiminas’ voting capital. The Usiminas control group, which was bound by a long-term shareholders’ agreement that governs the rights and obligations of Usiminas’ control group members, was composed as of such date of three sub-groups: the T/T Group; the NSC Group, comprising Nippon Steel Corporation (“NSC”), Metal One Corporation and Mitsubishi Corporation; and Usiminas’ pension fund Previdência Usiminas. The T/T Group held approximately 47.1% of the total shares held by the control group (39.5% corresponding to the Ternium entities and the other 7.6% corresponding to TenarisConfab); the NSC Group held approximately 45.9% of the total shares held by the control group; and Previdência Usiminas held the remaining 7%. The corporate governance rules reflected in the Usiminas shareholders agreement provided, among other things, that Usiminas’ executive board was composed of six members, including the chief executive officer and five vice-presidents, with Ternium and NSC nominating three members each. The right to nominate Usiminas’ chief executive officer alternated between Ternium and NSC at every 4-year interval, with the party that did not nominate the chief executive officer having the right to nominate the chairman of Usiminas’ board of directors for the same 4-year period. The Usiminas shareholders agreement also provided for an exit mechanism consisting of a buy-and-sell procedure—exercisable at any time after November 16, 2022, and applicable with respect to shares held by NSC and the T/T Group—, which would allow either Ternium or NSC to purchase all or a majority of the Usiminas shares held by the other shareholder.

(b) The acquisition of the additional participation

On March 30, 2023, Ternium S.A. announced that its subsidiaries Ternium Investments and Ternium Argentina, together with Confab, a subsidiary of its affiliate Tenaris S.A., all of which compose the T/T group within Usiminas control group, entered into a share purchase agreement to acquire from Nippon Steel Corporation, Mitsubishi and MetalOne (the “NSC group”), pro rata to their current participations in the T/T group, 68.7 million ordinary shares of Usinas Siderúrgicas de Minas Gerais S.A. – USIMINAS (“Usiminas”) at a price of BRL10 per ordinary share.


			Page 9 of			28


TERNIUM S.A.
Consolidated Condensed Interim Financial Statements as of September 30, 2025
and for the nine-month periods ended September 30, 2025 and 2024

3. ACQUISITION OF BUSINESS – INCREASE OF THE PARTICIPATION IN USIMINAS CONTROL GROUP AND NEW GOVERNANCE STRUCTURE OF USIMINAS (continued)

On July 3, 2023, the Company announced the completion of the acquisition of this additional participation. Pursuant to the transaction, Ternium paid $ 118.7 million in cash for 57.7 million ordinary shares, increasing its participation in the Usiminas control group to 51.5%.

The Usiminas control group holds the majority of Usiminas’ voting rights. Following the completion of the transaction, the T/T group holds an aggregate participation of 61.3% in the control group, with the NSC group and Previdência Usiminas (Usiminas employees’ pension fund) holding 31.7% and 7.1%, respectively. The Usiminas control group members also agreed a new governance structure, as a result of which the T/T group nominated a majority of the Usiminas board of directors, the CEO and four other members of Usiminas board of officers, and ordinary decisions are approved with a 55% majority of the control group shares.

Pursuant to the Usiminas shareholders agreement, as supplemented by the T/T Group shareholders’ agreement, Ternium started fully consolidating Usiminas balance sheet and results of operations in its consolidated financial statements beginning in July 2023.

As of July 3, 2023, Ternium remeasured its former participation (20.4%) at its fair value as of such date and recognized in its Consolidated Condensed Interim Financial Statements as of and for the nine-month period ended September 30, 2023, the effects described below.

Consequently, Ternium valued its previously held interest by means of the market quotation of Usiminas share in the Brazilian stock market. Such value as of July 3, 2023, was of 7.36 BRL per share, amounting to a total of $ 385.9 million. This valuation results in the recognition of a loss of $ 441.4 million, which is included along with the gain related to the bargain purchase amounting to $ 270.4 million (see note 3 (d)) in the “Effect related to the increase of the participation in Usiminas” in the income statement for a total of $ 171.0 million.

In addition, IFRS 3, paragraph 42, establishes that the previous interest must be remeasured, and necessary adjustments made as if it were a disposal of the investment. In this case, items previously recognized in other comprehensive income, mainly the CTA (currency translation adjustment) should be recycled to results of the period. The accumulated loss in “Other comprehensive income” as of the acquisition date was $ 934.9 million.


			Page 10 of			28


TERNIUM S.A.
Consolidated Condensed Interim Financial Statements as of September 30, 2025
and for the nine-month periods ended September 30, 2025 and 2024

3. ACQUISITION OF BUSINESS – INCREASE OF THE PARTICIPATION IN USIMINAS CONTROL GROUP AND NEW GOVERNANCE STRUCTURE OF USIMINAS (continued)

(d) Fair value of net assets acquired

The fair values determined for the assets acquired and liabilities assumed arising from the acquisition and as of the acquisition date are as follows:


Fair value of acquired assets and assumed liabilities:						in $ thousands

Property, plant and equipment						904,780
Investments in non-consolidated companies						400,037
Inventories						1,707,311
Cash and cash equivalents						781,072
Other investments						247,005
Trade receivables						764,257
Allowance for doubtful accounts						(44,626)
Other receivables						854,917
Deferred tax assets						1,327,232
Borrowings						(1,224,399)
Provisions						(856,153)
Trade payables						(758,687)
Other assets and liabilities, net						(509,486)
Net assets acquired						3,593,260

Non-controlling interest						(2,818,358)
Remeasurement of previously held interest in Usiminas						(385,851)
Total Purchase consideration						(118,686)
Bargain purchase gain						270,365

Loss on the remeasurement of previously held interest in Usiminas						(441,410)
Net loss effect related to the increase of the participation in Usiminas						(171,045)

The purchase price allocation disclosed above was prepared with the assistance of a third-party expert. Management applied significant judgment in estimating the fair value of assets acquired and liabilities assumed, which involved the use of significant estimates and assumptions in particular with respect to the estimation of the loss probability for the contingencies, including revenue forecasts, EBITDA margins, capital expenditures and discount rate for the cash flow projections. According to the purchase price allocation, the transaction led to the recognition of a bargain purchase of $ 270.4 million, recognized in the Consolidated Condensed Interim Financial Statements as of and for the nine-month period ended September 30, 2023.

(e) Put and call option

In addition to the share purchase and the new governance structure, a “put” and “call” mechanism was established according to the following scheme:

- NSC group will have the right, at any time after the closing of the transaction, to withdraw its remaining shares from the control group and sell them in the open market after giving the T/T group the opportunity to buy them at the equivalent in U.S. dollars of the 40-trading day average price per share immediately prior to the NSC group’s notice of withdrawal, as well as the right, at any time after the second anniversary of the closing, to sell such shares to the T/T group at $ 2.0584 per share.


			Page 11 of			28


TERNIUM S.A.
Consolidated Condensed Interim Financial Statements as of September 30, 2025
and for the nine-month periods ended September 30, 2025 and 2024

3. ACQUISITION OF BUSINESS – INCREASE OF THE PARTICIPATION IN USIMINAS CONTROL GROUP AND NEW GOVERNANCE STRUCTURE OF USIMINAS (continued)

- At any time after the second anniversary of the closing of the transaction, the T/T group will have the right to buy the NSC group’s remaining interest in the Usiminas control group (153.1 million ordinary shares) at the higher of $ 2.0584 per share and the equivalent in U.S. dollars of the 40-trading day average price per share immediately prior to the date of exercising the option.

- In the case of the T/T Group, Ternium will decide at its own discretion the execution of the call option, having Confab and Ternium Argentina the option to acquire the shares owned by NSC pro rata to their participation.

IAS 32 requires a liability to be recognized for written puts over non-controlling interests. The liability reflects the entity’s obligation to deliver cash or a financial asset. The financial liability is recognized at present value of the redemption amount and accreted through finance charges in the income statement over the contract period up to the final redemption amount. Ternium has recognized a liability associated with the put option of $ 242.5 million ($ 274.1 million as of September 30, 2025), accounted for in the statement of financial position under Other liabilities, with the corresponding debit in the statement of changes in equity under Non-controlling interest.

(f) Recognition of non-controlling interest

Ternium recognizes non-controlling interests in an acquired entity either at fair value or at the non-controlling interest’s proportionate share of the acquired entity’s net identifiable assets. This decision is made on an acquisition-by-acquisition basis. For the non-controlling interests in Usiminas, the Company elected to recognize the non-controlling interests at its proportionate share of the acquired net identifiable assets, which led to a non-controlling interest of $ 2,575.9 million, recognized in the Consolidated Condensed Interim Financial Statements as of and for the nine-month period ended September 30, 2023.

(g) Main contingencies associated with the acquired business

Contrary to the recognition principles in IAS 37 Provisions, Contingent Liabilities and Contingent Assets, IFRS 3 Business Combinations requires an acquirer of a business to recognize contingent liabilities assumed in a business acquisition at the acquisition date even if it is not probable that an outflow of resources will be required to settle the obligation.


						in $ thousands

Provisions for contingencies recognized by Usiminas before business combination						(199,677)

Provisions for contingencies recognized as part of the business combination:
Tax related contingencies						(432,488)
Civil and other related contingencies						(174,333)
Labour related contingencies						(49,655)
Total Provision for contingencies						(856,153)

Contingencies estimated by Management were related to possible losses arising from administrative proceedings and litigation related to tax, civil and labor matters and based on the advice and assessment of internal and external legal advisors.


			Page 12 of			28


TERNIUM S.A.
Consolidated Condensed Interim Financial Statements as of September 30, 2025
and for the nine-month periods ended September 30, 2025 and 2024

3. ACQUISITION OF BUSINESS – INCREASE OF THE PARTICIPATION IN USIMINAS CONTROL GROUP AND NEW GOVERNANCE STRUCTURE OF USIMINAS (continued)

The main contingencies recognized in the consolidated condensed interim financial statements pursuant to IFRS 3 Business Combinations in connection with the acquisition of the additional participation in Usiminas and the full consolidation of Usiminas include the following:



Description	Status	As of the acquisition date (in $ thousands)	As of September 30, 2025 (in $ thousands)
Labor lawsuits filed by employees, former employees and outsourced personnel of the Cubatão Plant, claiming severance pay and social security rights.	Pending judgment by the Labor Court and administrative bodies, at different levels.	57,343	33,881
Tax proceeding in which the tax authorities seek the reversal of ICMS/SP credits on materials considered as consumables (refractory items and others).	The Tax Debt was included in the Amnesty Program instituted by São Paulo State Law n. 17.843/23.	29,772	—
Labor lawsuits filed by employees, former employees and outsourced personnel of the Ipatinga Plant, claiming severance pay and social security rights.	Pending judgment by the Labor Court and administrative bodies, at different levels.	15,112	10,926
Labor lawsuits filed by former employees challenging the amount of compensation paid on dismissals.	Pending judgment.	10,837	5,812


Other contingencies		86,613	52,641

Provisions for contingencies recognized by Usiminas before business combination		199,677	103,260


Description	Status	As of the acquisition date (in $ thousands)	As of September 30, 2025 (in $ thousands)
Objection filed against the decision that recognized only partially the credit rights established in a final and unappealable court decision that determined the exclusion of ICMS amounts from the calculation basis of PIS/COFINS-Imports.	Pending judgment at administrative level.	94,792	85,891
Tax collection proceedings related to the collection of ICMS/SP on goods shipped to other countries without effective proof of export.	Pending judgment by the trial court.	51,546	46,706
Tax proceedings seeking the reversal of ICMS/SP credits on materials considered as consumables (refractory items and others).	Several case records, declaratory actions and tax collection proceedings, suspended or pending decision by higher courts.	38,640	32,563
ICMS – Action for annulment of the tax debt claimed by the State of Rio Grande do Sul due to failure to make the advance payment of the tax at the entry of goods coming from other States (rate differential ).	Pending judgment by the trial court.	28,789	26,086
Tax assessment notice issued by the State of Minas Gerais concerning alleged reversal of ICMS credits on sale of electrical energy.	Pending judgment at administrative level.	12,386	11,223
Other tax contingencies		206,335	144,427

Provisions for tax contingencies recognized as part of the business combination		432,488	346,896

Public Civil Action seeking the reimbursement of the amounts increased by means of a term of amendment to the Contractor's Agreement, due to alleged overbilling in the construction of a bridge in Brasília/DF.	As of July 3, 2023, the claim was deemed groundless and was pending judgment of appeal. As of December 31, 2023, the action was dismissed as unfounded and the case was archived.	64,315	—
Public Civil Action seeking compensation for alleged damages caused to the State of Santa Catarina's Treasury related to improper expenditures incurred in the construction of a bridge.	Pending conclusion of the expert evidence	21,113	19,130
Other civil and other contingencies (1)		88,905	41,483
Provisions for civil and other contingencies recognized as part of the business combination		174,333	60,613

Labor lawsuits filed by employees, former employees and outsourced personnel of the Cubatão Plant, claiming severance pay and social security rights.	Pending judgment by the Labor Court and administrative bodies, at different levels.	27,123	15,361
Other labour contingencies (1)		22,532	10,167
Provisions for labour contingencies recognized as part of the business combination		49,655	25,528

(1) Composed of individually non-significative contingencies


			Page 13 of			28


TERNIUM S.A.
Consolidated Condensed Interim Financial Statements as of September 30, 2025
and for the nine-month periods ended September 30, 2025 and 2024

3. ACQUISITION OF BUSINESS – INCREASE OF THE PARTICIPATION IN USIMINAS CONTROL GROUP AND NEW GOVERNANCE STRUCTURE OF USIMINAS (continued)

(h) Recoverability assessment of Usiminas Steel CGU and accumulated deferred tax assets

As of September 30, 2025, Ternium assessed the recoverability of its Usiminas Steel CGU and of Usiminas’ accumulated deferred tax assets (DTA), and, based on these analyses and on applicable accounting standards, Management concluded that only a $405 million write-down of DTA should be recognized as an income tax charge in the quarter. As of such date, Usiminas held DTA amounting to $776 million, primarily stemming from temporary differences and tax losses recognized during the July 2023 business combination. Ternium conducted a comprehensive recoverability assessment regarding the future availability of taxable profits needed to utilize these DTA, as required under IAS 12, incorporating historical performance and updated forecasts in its projections.


			Page 14 of			28


TERNIUM S.A.
Consolidated Condensed Interim Financial Statements as of September 30, 2025
and for the nine-month periods ended September 30, 2025 and 2024

4. SEGMENT INFORMATION

OPERATING SEGMENTS

The Company is organized in two operating segments: Steel and Mining.

The Steel segment includes the sales of steel products done by the Company's subsidiaries, which comprises mainly slabs, heavy plates, hot and cold rolled products, coated products, stamped steel parts for the automotive industry, roll-formed and tubular products, billets, bars and other products, including sales of energy.

The Mining segment includes the sales of mining products done by the Company's subsidiaries, mainly iron ore and iron ore pellets, and comprises the mining activities of Las Encinas, an iron ore mining company in which Ternium holds a 100% equity interest, the 50% of the operations and results performed by Peña Colorada, another iron ore mining company in which Ternium maintains that same percentage over its equity interest, and the mining activities of Mineraçao Usiminas, an iron ore mining company in which Usiminas holds a 70% equity interest.

Ternium's Chief Executive Officer ("CEO") functions as the CODM. The various geographic regions operate as an integrated steel producer. The CEO allocates resources and assesses performance of the Steel Segment as an integrated business and does the same with the Mining Segment. The CEO uses "Operating income - Management view" as per the below table as the key performance measure, which differs from operating income determined in accordance with IFRS principally as follows:

• The use of direct cost methodology to value inventories, while under IFRS they are valued at full cost, including absorption of production overheads and depreciation.

• The use of costs based on previously internally defined cost estimates, while, under IFRS, costs are calculated at historical cost (using the FIFO methodology).

• In the case of Usiminas, the use of costs based on the weighted average cost, while, under IFRS, costs are calculated under the FIFO methodology.

• Other differences related to other operating income and expenses.


			Page 15 of			28


TERNIUM S.A.
Consolidated Condensed Interim Financial Statements as of September 30, 2025
and for the nine-month periods ended September 30, 2025 and 2024

4. SEGMENT INFORMATION (continued)


	Nine-month period ended September 30, 2025 (Unaudited)
	Steel	Mining	Inter-segment eliminations	Total

Operating income - Management view	766,382	(75,177)	(7,282)	683,923
Reconciliation:
Differences in Cost of sales				(137,470)


Operating income - Under IFRS				546,453

Financial income (expense), net				(1,564)
Equity in earnings (losses) of non-consolidated companies				65,372
Provision for ongoing litigation related to the acquisition of a participation in Usiminas				(116,600)

Income before income tax expense - IFRS				493,661

Net sales from external customers	11,416,908	417,401	—	11,834,309
Net sales from transactions with other operating segments of the same entity	—	411,321	(411,321)	—

Depreciation and amortization	(431,675)	(146,243)	—	(577,918)

	Nine-month period ended September 30, 2024 (Unaudited)
	Steel	Mining	Inter-segment eliminations	Total

Operating income - Management view	1,252,008	(131,360)	12,406	1,133,054
Reconciliation:
Differences in Cost of sales				34,087
Differences in Other operating income (expense), net				53,734

Operating income - Under IFRS				1,220,875

Financial income (expense), net				(126,990)
Equity in earnings (losses) of non-consolidated companies				51,179
Provision for ongoing litigation related to the acquisition of a participation in Usiminas				(814,000)

Income before income tax expense - IFRS				331,064

Net sales from external customers	13,453,084	319,721	—	13,772,805
Net sales from transactions with other operating segments of the same entity	—	490,118	(490,118)	—

Depreciation and amortization	(409,553)	(144,870)	—	(554,423)

Information on segment assets is not disclosed as it is not reviewed by the CEO.

GEOGRAPHICAL INFORMATION

The Company had no revenues attributable to the Company’s country of incorporation (Luxembourg) in 2025.

For purposes of reporting geographical information, net sales are allocated based on the customer’s location. Allocation of depreciation and amortization is based on the geographical location of the underlying assets.


	Nine-month period ended September 30, 2025 (Unaudited)
	Mexico	Southern region	Brazil	Other markets	Total

Net sales	5,470,198	1,747,921	3,043,309	1,572,881	11,834,309

Non-current assets (1)	7,044,301	1,107,055	2,641,877	328,920	11,122,153

	Nine-month period ended September 30, 2024 (Unaudited)
	Mexico	Southern region	Brazil	Other markets	Total

Net sales	6,825,865	1,821,729	3,282,501	1,842,710	13,772,805

Non-current assets (1)	5,370,800	1,058,977	2,467,408	306,783	9,203,968

(1) Includes Property, plant and equipment and Intangible assets.


			Page 16 of			28


TERNIUM S.A.
Consolidated Condensed Interim Financial Statements as of September 30, 2025
and for the nine-month periods ended September 30, 2025 and 2024

5. COST OF SALES


	Nine-month period ended September 30,
	2025	2024
	(Unaudited)

Inventories at the beginning of the year	4,750,511	4,948,376


Translation differences	184,551	(149,556)

Plus: Charges for the period
Raw materials and consumables used and other movements (1)	6,996,599	9,204,703
Services and fees	226,125	233,108
Labor cost	814,955	818,244
Depreciation of property, plant and equipment	434,018	449,714
Amortization of intangible assets	81,966	56,975
Maintenance expenses	666,254	719,429
Office expenses	13,810	12,747

Insurance	28,963	26,860
Change of obsolescence allowance	6,533	14,475
Recovery from sales of scrap and by-products	(24,117)	(22,874)
Others	37,135	41,088

Less: Inventories at the end of the period	(4,132,409)	(5,019,078)

Cost of Sales	10,084,894	11,334,211

(1) For the nine-month period ended September 30, 2024, it included $ 82 million, related to the readjustment of electricity transmission charges and to natural gas charges in Mexico.

6. SELLING, GENERAL AND ADMINISTRATIVE EXPENSES


	Nine-month period ended September 30,
	2025	2024
	(Unaudited)
Services and fees	83,755	78,013
Labor cost	291,202	297,154
Depreciation of property, plant and equipment	21,351	17,791
Amortization of intangible assets	40,583	29,943
Maintenance and expenses	9,618	8,896
Taxes	110,946	110,861
Office expenses	65,866	65,140
Freight and transportation	551,841	640,688
(Decrease) Increase of allowance for doubtful accounts	(554)	5,117
Others	20,763	24,170

Selling, general and administrative expenses	1,195,371	1,277,773


			Page 17 of			28


TERNIUM S.A.
Consolidated Condensed Interim Financial Statements as of September 30, 2025
and for the nine-month periods ended September 30, 2025 and 2024

7. FINANCE EXPENSE, FINANCE INCOME AND OTHER FINANCIAL INCOME (EXPENSES), NET


	Nine-month period ended September 30,
	2025	2024
	(Unaudited)
Interest expense	(163,996)	(144,057)

Finance expense	(163,996)	(144,057)

Interest income	181,809	227,253

Finance income	181,809	227,253

Net foreign exchange loss	(37,971)	(32,494)

Change in fair value of financial assets (1)	58,235	(141,799)
Derivative contract results	(4,244)	11,233
Others	(35,397)	(47,126)

Other financial (expenses) income, net	(19,377)	(210,186)

(1) For the nine-month periods ended September 30, 2025 and 2024, mainly related to the recycling of other comprehensive income from the sale of investments previously recognized at fair value through other comprehensive income.

8. PROPERTY, PLANT AND EQUIPMENT, NET


	Nine-month period ended September 30,
	2025	2024
	(Unaudited)
At the beginning of the year	8,381,155	7,637,687


Currency translation differences	175,461	(138,231)
Additions (1)	2,014,768	1,126,196
Value adjustments of lease contracts	8,268	11,872
Disposals	(28,798)	(25,849)
Depreciation charge	(455,369)	(467,505)
Transfers and reclassifications	8,847	(2,292)



At the end of the period	10,104,332	8,141,878

(1) For the nine-month periods ended September 30, 2025, it includes $ 1,606 million related to additions of Property, plant and equipment in Mexico, mainly in connection with the investment plant in the Pesquería facilities.

9. INTANGIBLE ASSETS, NET


	Nine-month period ended September 30,
	2025	2024
	(Unaudited)
At the beginning of the year	1,022,111	996,048


Currency translation differences	6,501	(4,188)
Additions	119,937	160,476
Amortization charge	(122,549)	(86,918)


Transfers/Disposals	(8,179)	(3,328)

At the end of the period	1,017,821	1,062,090


			Page 18 of			28


TERNIUM S.A.
Consolidated Condensed Interim Financial Statements as of September 30, 2025
and for the nine-month periods ended September 30, 2025 and 2024

10. INVESTMENTS IN NON-CONSOLIDATED COMPANIES


Company	Country of incorporation	Main activity	Voting rights as of		Value as of

			September 30, 2025	December 31, 2024	September 30, 2025	December 31, 2024

Techgen S.A. de C.V.	Mexico	Provision of electric power	48.00%	48.00%	154,336	130,433
Unigal Usiminas Ltda.	Brazil	Manufacturing and selling of steel products	70.00%	70.00%	123,313	98,280
MRS Logística S.A	Brazil	Logistical services	11.48%	11.48%	263,494	203,778
Other non-consolidated companies (1)					40,991	36,025

					582,134	468,516

(1) It includes the investments held in Finma S.A.I.F., Recrotek S.R.L. de C.V., Gas Industrial de Monterrey S.A. de C.V., Modal Terminal de Graneis Ltda., Usiroll – Usiminas Court Tecnologia em Acabamento Superficial Ltda, Codeme Engenharia S.A, Terminal de Cargas Paraopeba Ltda., Terminal de Cargas Sarzedo Ltda., and Metalcentro Ltda.

Techgen S.A. de C.V.

Techgen stated as of and for the nine-month period ended September 30, 2025, that revenues amounted to $ 317 million ($ 156 million as of September 30, 2024), net profit from continuing operations to $ 49 million ($ 20 million as of September 30, 2024), non-current assets to $ 679 million ($ 692 million as of December 31, 2024), current assets to $ 94 million ($ 104 million as of December 31, 2024), non-current liabilities to nil ($ 415 million as of December 31, 2024), current liabilities to $ 451 million ($ 109 million as of December 31, 2024) and shareholders’ equity to $ 322 million ($ 272 million as of December 31, 2024).

Unigal Usiminas Ltda.

Unigal stated as of and for the nine-month period ended September 30, 2025, that revenues amounted to $ 49 million ($ 52 million for the nine-month period ended September 30, 2024), net profit from continuing operations to $ 18 million ($ 22 million for the nine-month period ended September 30, 2024), non-current assets to $ 147 million ($ 126 million as of December 31, 2024), current assets to $ 59 million ($ 35 million as of December 31, 2024), non-current liabilities to $ 44 million ($ 38 million as of December 31, 2024), current liabilities to $ 17 million ($ 9 million as of December 31, 2024) and shareholders’ equity to $ 145 million ($114 million as of December 31, 2024).

MRS Logística S.A.

MRS Logística stated as of and for the nine-month period ended September 30, 2025, that revenues amounted to $ 880 million ($ 1,033 million for the nine-month period ended September 30, 2024), net profit from continuing operations to $ 195 million ($ 197 million for the nine-month period ended September 30, 2024), non-current assets to $ 3,215 million ($ 2,461 million as of December 31, 2024), current assets to $ 1,068 million ($ 868 million as of December 31, 2024), non-current liabilities to $ 2,011 million ($ 1,576 million as of December 31, 2024), current liabilities to $ 661 million ($ 547 million as of December 31, 2024) and shareholders’ equity to $ 1,611 million ($ 1,206 million as of December 31, 2024).


			Page 19 of			28


TERNIUM S.A.
Consolidated Condensed Interim Financial Statements as of September 30, 2025
and for the nine-month periods ended September 30, 2025 and 2024

11. DISTRIBUTION OF DIVIDENDS

During the annual shareholders’ meeting held on May 6, 2025, the shareholders approved a distribution of dividends of $ 0.27 per share ($ 2.70 per ADS). The annual dividend included the interim dividend of $ 0.09 per share ($ 0.90 per ADS) paid in November 2024. A net dividend of $ 0.18 per share ($ 1.80 per ADS) was paid on May 14, 2025, of approximately $ 353 million in the aggregate.

12. INCOME TAX – PILLAR TWO

The Company is within the scope of the OECD Pillar Two model rules. Pillar Two legislation was enacted in Luxemburg, the jurisdiction in which the company is incorporated, and came into effect from 1 January 2024. The Company applies the exception to recognizing and disclosing information about deferred tax assets and liabilities related to Pillar Two income taxes, as provided in the amendments to IAS 12 issued in May 2023.

The Company estimates as current tax expense related to Pillar Two the amount of $ 11.3 million for the nine-month period ended September 30, 2025. The total provision related to Pillar Two as of September 30, 2025, amounts to $ 32.7 million.

13. CONTINGENCIES, COMMITMENTS AND RESTRICTIONS ON THE DISTRIBUTION OF PROFITS

Contingencies, commitments and restrictions on the distributions of profits should be read in Note 25 to the Company’s audited Consolidated Financial Statements for the year ended December 31, 2024.

(i) Tax claims and other contingencies

Provision for ongoing litigation related to the acquisition of a participation in Usiminas

The Company is party to a longstanding lawsuit filed in Brazil by Companhia Siderúrgica Nacional, or CSN, and various entities affiliated with CSN against Ternium Investments, its subsidiary Ternium Argentina, and Tenaris’s subsidiary Confab, all of which compose the T/T Group under the Usiminas shareholders agreement. The entities named in the CSN lawsuit had acquired participations in Usiminas in January 2012. The CSN lawsuit alleges that, under applicable Brazilian laws and rules, the acquirers were required to launch a tag-along tender offer to all non-controlling holders of Usiminas ordinary shares for a price per share equal to 80% of the price per share paid in such acquisition, or BRL 28.8, and seeks an order to compel the acquirers to launch an offer at that price plus interest. If so ordered, the offer would need to be made to 182,609,851 ordinary shares of Usiminas not belonging to the Usiminas control group. Ternium Investments and Ternium Argentina’s respective shares in the offer would be 60.6% and 21.5%.

On September 23, 2013, the first instance court dismissed the CSN lawsuit, and on February 8, 2017, the court of appeals maintained the understanding of the first instance court. CSN filed an appeal to the Superior Court of Justice (SCJ), seeking the review and reversal of the decision issued by the Court of Appeals, and on March 7, 2023, the SCJ, by majority vote, rejected CSN’s appeal.


			Page 20 of			28


TERNIUM S.A.
Consolidated Condensed Interim Financial Statements as of September 30, 2025
and for the nine-month periods ended September 30, 2025 and 2024

13. CONTINGENCIES, COMMITMENTS AND RESTRICTIONS ON THE DISTRIBUTION OF PROFITS (continued)

CSN made several submissions in connection with the SCJ decision, including a motion for clarification that challenged the merits of the SCJ decision. Decisions at the SCJ are adopted by majority vote. At an October 17, 2023 session, two justices of the SCJ voted in favor of remanding the case to the first instance for it to be retried following production and assessment of the new evidence, and two justices of the SCJ voted, without requiring any further evidence, in favor of granting CSN’s motion for clarification and reversing the March 7, 2023 decision that rejected CSN’s appeal; because the fifth member of SCJ excused himself from voting, a justice from another panel at the SCJ was summoned to produce the tie-breaking vote. On June 18, 2024, the SCJ completed its voting on CSN’s motion for clarification and reversed, by majority vote, its March 7, 2023 decision, and resolved that Ternium Investments, its subsidiary Ternium Argentina and Tenaris’s subsidiary Confab should pay CSN an indemnification in connection with the acquisition by the T/T Group of the participations in Usiminas in January 2012, with CSN being allowed to retain ownership of the Usiminas ordinary shares it currently owns.

On August 1, 2024, Ternium Investments, Ternium Argentina and the other T/T Group entities filed a motion for clarification against the SCJ decision and, subsequently, CSN filed its reply. On December 6, 2024, the SCJ rejected this motion for clarification, confirming the obligation of the T/T Group entities to pay indemnification in connection with the 2012 acquisition of the participations in Usiminas. Notwithstanding the foregoing, the SCJ unanimously resolved to modify the applicable monetary adjustment mechanism and to cap the applicable attorney’s fees, thereby lowering the aggregate amount that would be payable if CSN ultimately prevails in this claim. Based on such SCJ decision, assuming monetary adjustment through September 30, 2025, and attorney’s fees in the amount of BRL 5 million, the aggregate amount potentially payable by Ternium Investments and Ternium Argentina if CSN finally prevails on its claims would be of approximately BRL 2,069.7 million (BRL 1,875.9 million as of December 31, 2024) and BRL 732.7 million (BRL 664.1 million as of December 31, 2024). The foregoing amounts, if the BRL/$ rate as of September 30, 2025, is used, are equivalent to approximately $ 389.1 million ($ 302.9 million as of December 31, 2024, it the BRL/$ rate as of such date is used) and $ 137.7 million ($ 107.3 million as of December 31, 2024, it the BRL/$ rate as of such date is used).

The Company continues to believe that all of CSN's claims and allegations are unsupported and without merit, as confirmed by several opinions of Brazilian legal counsel, two decisions issued by the Brazilian securities regulator in February 2012 and December 2016, the first and second instance court decisions and the March 7, 2023 SCJ decision referred to above, and that in connection with the Usiminas acquisition the T/T Group was not required either to launch a tender offer or to pay indemnification to CSN. Accordingly, on February 10, 2025, Ternium filed an extraordinary appeal against the SCJ decisions that ordered an indemnification payment, seeking their review and reversal by the Supreme Federal Tribunal. On September 10, 2025, the Vice-President of the SCJ, without examining the merits, denied leave to proceed with the extraordinary appeal as to certain arguments and ruled it inadmissible as to certain others, and on October 2, 2025, Ternium and the other T/T Group entities filed an internal appeal for the special court of the SCJ to reconsider the denial of leave to proceed and a concurrent appeal against the inadmissibility ruling for the Supreme Federal Tribunal to consider admissibility of the extraordinary appeal directly. The Company cannot predict the ultimate resolution on the matter.


			Page 21 of			28


TERNIUM S.A.
Consolidated Condensed Interim Financial Statements as of September 30, 2025
and for the nine-month periods ended September 30, 2025 and 2024

13. CONTINGENCIES, COMMITMENTS AND RESTRICTIONS ON THE DISTRIBUTION OF PROFITS (continued)

PIS and COFINS credits defense action - Usiminas

In August 2024, the Federal Government had filed two new tax claims for a total of approximately BRL 503 million ($ 92 million; BRL 550 million or $ 103 million as of September 30, 2025). The contingencies are related to tax assessments that partially approved offset statements through which Usiminas claimed PIS and COFINS credits arising from a final court decision, which discussed the exclusion of ICMS from the calculation basis of said contributions. The tax authority disagreed with the calculation methodology adopted by Usiminas. Usiminas filed a defense action in the aforementioned proceedings, arguing that the calculations are correct and the credit rights should be recognized.

(ii) Commitments

(a) Ternium Argentina also signed various contracts for the provision and transportation of natural gas, including Tecpetrol and Energy Consulting Services S.A., both related companies of Ternium, assuming firm commitments for a total of $ 47.0 million until April 2028. Additionally, Ternium Argentina signed contracts for gas transportation with Transportadora de Gas del Norte S.A., a related company of Ternium, assuming firm commitments for a total of $ 17.9 million payable until April 2028.

(b) In April 2025, Ternium Mexico entered into an amendment agreement for the industrial gas supply with Praxair Mexico for the Guerrero, Juventud and Universidad facilities, originally signed in June 2008. As of September 30, 2025, the agreement considers a minimum annual oxygen consumption of 96 million cubic meters, valued at approximately $ 4.5 million per year, valid until September 2029. The Company is in compliance with the minimum annual quotas established, which represent less than half of the average annual consumption.

(c) Ternium Brasil signed in December 2023 a contract with Vix Logística S.A. for logistics supply chain operations. This agreement is due to terminate in April 2029 and the outstanding amount was $ 34.0 million as of September 30, 2025. The contract has minimum required volumes and a penalty for early termination.

(d) Ternium Brasil entered into an agreement with Petrobras S.A. for the supply of petcoke. The contract has minimum required volumes and is due to terminate in February 2026. As of September 30, 2025, the outstanding amount of the agreement was approximately $ 52.1 million.

(e) Ternium Brasil entered into an agreement with LSI Logística S.A. for the rental of mobile equipment for maintenance and operations. The contract is due to terminate in March 2028 and has a penalty for early termination. As of September 30, 2025, the outstanding amount was $ 36.9 million.

(f) Usiminas S.A. entered into an agreement with Seday Transportes Ltda. for transportation services. The contract is due to terminate in until November 2027 and has a penalty for early termination. As of September 30, 2025, the outstanding amount was approximately $ 13.6 million.

(g) Usiminas S.A. signed in May 2025 contracts with VLI Multimodal S.A. for the rail transportation of steel products, iron ore and other raw materials until December 2027. The outstanding amount was approximately $351.3 million as of September 30, 2025. The contracts have minimum yearly-required volumes.


			Page 22 of			28


TERNIUM S.A.
Consolidated Condensed Interim Financial Statements as of September 30, 2025
and for the nine-month periods ended September 30, 2025 and 2024

13. CONTINGENCIES, COMMITMENTS AND RESTRICTIONS ON THE DISTRIBUTION OF PROFITS (continued)

(h) Usiminas S.A. signed in May 2025 a contract with VLI Multimodal S.A. for port and accessory services at the Port of Praia Mole until December 2027. The contract has an annual movement commitment linked to a take-or-pay agreement. The outstanding amount was approximately $ 66.1 million as of September 30, 2025.

(i) Usiminas S.A. signed in July 2025 contracts with Petrobras for the supply of the natural gas for the industrial units of Ipatinga and Cubatão, with a minimum daily consumption volume of 889 thousand cubic meters, until December 2027. The outstanding amount was approximately $388.9 million as of September 30, 2025. The flexibility calculation is done on a daily basis, while the take-or-pay volume is 70% annually.

(j) Usiminas S.A. signed in July 2025 contracts with Ical Industria de Calcinacao Ltda. for the supply of lime and limestone for the industrial unit of Ipatinga, with a minimum monthly consumption volume of 9,282 tons of lime and 23,400 tons of limestone until August 2026. The outstanding amount was approximately $21.9 million as of September 30, 2025. The contract's terms consider the payment of 100% take-or-pay.


			Page 23 of			28


TERNIUM S.A.
Consolidated Condensed Interim Financial Statements as of September 30, 2025
and for the nine-month periods ended September 30, 2025 and 2024

14. RELATED PARTY TRANSACTIONS

As of September 30, 2025, Techint Holdings S.à r.l. (“Techint”) indirectly owned 65.03% of the Company’s share capital and Tenaris Investments S.à r.l. (“Tenaris”) held 11.46% of the Company’s share capital. Each of Techint and Tenaris were controlled by San Faustin S.A., a Luxembourg company (“San Faustin”). Rocca & Partners Stichting Administratiekantoor Aandelen San Faustin (“RP STAK”), a private foundation (Stichting) located in the Netherlands, held voting shares in San Faustin sufficient in number to control San Faustin. No person or group of persons controls RP STAK.

The following transactions were carried out with related parties:


	Nine-month period ended September 30,
	2025	2024
	(Unaudited)
(i) Transactions
(a) Sales of goods and services
Sales of goods to non-consolidated parties	85,604	120,794
Sales of goods to other related parties	126,565	121,257
Sales of services and others to non-consolidated parties	138	132
Sales of services and others to other related parties	2,437	2,252

	214,744	244,435
(b) Purchases of goods and services
Purchases of goods from non-consolidated parties	299,911	223,780
Purchases of goods from other related parties	214,271	63,413
Purchases of services and others from non-consolidated parties	152,665	65,960
Purchases of services and others from other related parties	392,107	119,288


	1,058,954	472,441
(c) Financial results
Income with non-consolidated parties	9,737	10,109
Expenses in connection with lease contracts from other related parties	(645)	(532)



	9,092	9,577
(d) Dividends
Dividends from non-consolidated parties	8,759	6,882

	8,759	6,882
(e) Other income and expenses
Income (expenses), net with non-consolidated parties	546	714
Income (expenses), net with other related parties	670	722

	1,216	1,436


	September 30, 2025	December 31, 2024
	(Unaudited)
(ii) Period-end balances
(a) Arising from sales/purchases of goods/services
Receivables from non-consolidated parties	164,239	156,937
Receivables from other related parties	13,865	26,988
Advances to non-consolidated parties	632	2,524
Advances to suppliers with other related parties	167,184	131,685
Payables to non-consolidated parties	(45,978)	(57,230)
Payables to other related parties	(176,599)	(39,721)
Lease Liabilities with other related parties	(1,528)	(1,861)

	121,815	219,322


			Page 24 of			28


TERNIUM S.A.
Consolidated Condensed Interim Financial Statements as of September 30, 2025
and for the nine-month periods ended September 30, 2025 and 2024

15. FINANCIAL INSTRUMENTS BY CATEGORY AND FAIR VALUE MEASUREMENT

1)Financial instruments by category

The accounting policies for financial instruments have been applied to the line items below. According to the scope and definitions set out in IFRS 7 and IAS 32, employers’ rights and obligations under employee benefit plans, and non-financial assets and liabilities such as advanced payments and income tax payables, are not included.



As of September 30, 2025 (in $ thousands)	Amortized cost	Assets at fair value through profit or loss	Assets at fair value through OCI	Total

(i) Assets as per statement of financial position
Receivables	513,739	—	—	513,739
Derivative financial instruments	—	254	75,165	75,419
Trade receivables	1,774,679	—	—	1,774,679
Other investments	122,523	283,198	1,031,980	1,437,701
Cash and cash equivalents	1,105,529	217,356	—	1,322,885

Total	3,516,470	500,808	1,107,145	5,124,423

As of September 30, 2025 (in $ thousands)	Amortized cost	Liabilities at fair value through profit or loss		Total

(ii) Liabilities as per statement of financial position
Other liabilities	469,328	—		469,328
Trade payables	2,047,431	—		2,047,431
Derivative financial instruments	—	5,387		5,387
Lease liabilities	212,478	—		212,478
Borrowings	2,045,954	—		2,045,954

Total	4,775,191	5,387		4,780,578

2)Fair Value by Hierarchy

IFRS 13 requires for financial instruments that are measured at fair value, a disclosure of fair value measurements by level. See note 29 of the Consolidated Financial Statements as of December 31, 2024 for definitions of levels of fair values and figures at that date.

The following table presents the assets and liabilities that are measured at fair value:


	Fair value measurement as of September 30, 2025 (in $ thousands):
Description	Total	Level 1	Level 2	Level 3 (*)

Financial assets at fair value through profit or loss / OCI
Cash and cash equivalents	217,356	217,356	—	—
Other investments	1,315,178	1,150,796	164,153	229
Derivative financial instruments	75,419	—	75,419	—

Total assets	1,607,953	1,368,152	239,572	229

Financial liabilities at fair value through profit or loss / OCI
Derivative financial instruments	5,387	—	5,387	—

Total liabilities	5,387	—	5,387	—


			Page 25 of			28


TERNIUM S.A.
Consolidated Condensed Interim Financial Statements as of September 30, 2025
and for the nine-month periods ended September 30, 2025 and 2024

15. FINANCIAL INSTRUMENTS BY CATEGORY AND FAIR VALUE MEASUREMENT (continued)


	Fair value measurement as of December 31, 2024 (in $ thousands):
Description	Total	Level 1	Level 2	Level 3 (*)

Financial assets at fair value through profit or loss / OCI
Cash and cash equivalents	423,927	423,927	—	—
Other investments	1,633,797	1,501,389	131,866	542
Derivative financial instruments	4,483	—	4,483	—

Total assets	2,062,207	1,925,316	136,349	542

Financial liabilities at fair value through profit or loss / OCI
Derivative financial instruments	50,342	—	50,342	—

Total liabilities	50,342	—	50,342	—

(*) The fair value of financial instruments classified as level 3 is not obtained from observable market information, but from measurements of the asset portfolio at market value provided by the fund manager. The evolution of such instruments during the nine-month period ended September 30, 2025, and the year ended December 31, 2024, corresponds to the initial investment and to the changes in its fair value.

16. FOREIGN EXCHANGE RESTRICTIONS IN ARGENTINA

Ternium’s Argentine subsidiary, Ternium Argentina S.A., is currently operating in a complex and volatile economic environment.

Between September 2019 and December 13, 2023, the Argentine government imposed significant restrictions on foreign exchange transactions. Since the new administration took office in Argentina in December 2023 certain restrictions have been gradually eased. On April 14, 2025, the Argentine government introduced flexibility to foreign exchange restrictions on certain transactions by individuals and companies. At the date of these Consolidated Condensed Interim Financial Statements, foreign exchange restrictions remain and the scope and timing of additional flexibility or other upcoming changes, if any, remain unknown. The main currently applicable measures are described below:

•Foreign currency proceeds derived from exports of goods must be sold into the Argentine foreign exchange market (“MULC”) and converted into Argentine pesos within 60 days (if made to related parties) or 180 days (if made to unrelated parties) from shipment date, or, if collected earlier, within 20 business days of collection. Foreign currency proceeds from exports of services must be sold into the MULC and converted into Argentine pesos within 20 business days of collection.

•Access to the MULC to pay for imports of services is permitted as from the date of supply or accrual of the service (if the service was rendered by a non-related party) or is deferred for 90 calendar days as from the date of supply or accrual of the service (if rendered by a related party).

•Access to the MULC to pay for imports of goods is permitted as from the date of customs clearance.

•Access to the MULC to pay imports of capital assets is permitted according to the following schedule: up to 30% in advance; up to 50% against shipment; and the balance against customs clearance.

•Access to the MULC to pay dividends will be permitted for distributable earnings corresponding to full fiscal years commencing after January 1, 2025. Access to the MULC to pay dividends for accumulated earnings relating to prior years remains subject to the approval of the Argentine Central Bank.

Ternium Argentina carries out all of its import and export transactions through the MULC. Therefore, assets and liabilities in foreign currency as of September 30, 2025, have been valued considering the official exchange rates at the end of the period.


			Page 26 of			28


TERNIUM S.A.
Consolidated Condensed Interim Financial Statements as of September 30, 2025
and for the nine-month periods ended September 30, 2025 and 2024

16. FOREIGN EXCHANGE RESTRICTIONS IN ARGENTINA (continued)

Under Ternium Argentina’s annual accounts as of September 30, 2025, and for the nine-month period then ended, revenues amounted to $ 1,519 million (nine-month period ended September 30, 2024: $ 1,676 million), net profit from continuing operations to $ 24 million (nine-month period ended September 30, 2024: $ 131 million), total assets to $ 5,327 million (December 31, 2024: $ 5,726 million), total liabilities to $ 532 million (December 31, 2024: $ 790 million) and shareholders’ equity to $ 4,796 million (December 31, 2024: $ 4,936 million).

Ternium Argentina’s cash and cash equivalents and other investments amounted to $ 877 million as of September 30, 2025, broken down as follows:

- $ 768 million in U.S. dollars-denominated instruments in sovereign bonds issued by the Argentine Government and payable in U.S. dollars, and Argentine Treasury bonds related to the official exchange rate. The U.S. dollar value of these instruments recorded in Ternium’s consolidated financial statements is based on their Argentine peso local market price, converted to the U.S. dollar at the ARS/$ official exchange rate. Therefore, the valuation of such investments is subject to the volatility of the Argentine financial market and currency exchange rates, leading to a potential significant reduction of such value in the consolidated financial statements.

- $ 99 million in Argentine pesos-denominated instruments.

- $ 10 million in negotiable obligations and promissory notes issued by Argentine export driven companies in U.S. dollars and mainly payable in Argentine pesos.

Ternium Argentina’s financial position in ARS as of September 30, 2025, amounted to $ 223 million in monetary assets and $ 126 million in monetary liabilities. All of Ternium Argentina’s ARS-denominated assets and liabilities are valued at the prevailing official exchange rate. In the event of a devaluation, Ternium Argentina may be adversely affected, and will also suffer a loss on deferred tax charge as a result of a deterioration on the tax value of their fixed assets. At this time, the Company is unable to estimate all impacts of a new devaluation of the Argentine peso against the U.S. dollar.

This context of volatility and uncertainty remains in place as of the issue date of these Consolidated Condensed Interim Financial Statements. Management continues to monitor closely the evolution of the main variables affecting its business, identifying the potential impact thereof on its financial and economic situation and determining the appropriate course of action in each case. The Company’s Consolidated Condensed Interim Financial Statements should be read taking into account these circumstances.

17. RECENTLY ANNOUNCED TARIFFS ON IMPORTS IN THE UNITED STATES

On February 1, 2025, the U.S. government announced the imposition, through the International Emergency Economic Powers Act (IEEPA), of tariffs applicable to all products imported from Mexico, Canada and China. As of the date of these consolidated condensed interim financial statements, Mexican and Canadian products that comply with USMCA preferential rules of origin, are exempt from this tariff.

In addition, on March 12, 2025, the U.S. government imposed, under Section 232, a 25% tariff on virtually all imports of steel and on certain steel derivatives, revoking previously negotiated country-specific exemptions and quota arrangements. The tariff was later raised to 50%. In addition, after several rounds of consultations with domestic producers, a growing number of products containing steel have been added to a list of items subject to this tariff.


			Page 27 of			28


TERNIUM S.A.
Consolidated Condensed Interim Financial Statements as of September 30, 2025
and for the nine-month periods ended September 30, 2025 and 2024

17. RECENTLY ANNOUNCED TARIFFS ON IMPORTS IN THE UNITED STATES (continued)

Further, on April 2, 2025, the Trump administration announced that the U.S. would implement reciprocal tariffs with trading partners (Mexico and Canada were not subject to these tariffs), with a minimum tariff of 10% and an extra tariff specific to each country, which was later postponed for 90 days. On August 1st, 2025, the U.S. notified various countries about reciprocal tariffs applied on a case-by-case basis. Mexico was conceded 90 more days to continue negotiating a bilateral agreement, while Brazil and Argentina were subject to a reciprocal tariff of 10%. Reciprocal tariffs do not add up to Section 232.

Also in April 2, 2025, the US government confirmed a previously announced 25% tariff under Section 232 on all imported automobiles produced outside the U.S. However, vehicles and parts that comply with the USMCA are only subject to this tariff on their non-U.S. specific content, and, in the case of auto parts, only when the government establishes a process to exempt U.S. content from tariffs. In this same line, on September 25, 2025, President Trump announced that a 25% tariff would be imposed on all imported medium and heavy-duty trucks from November 1, 2025.

Other countries have announced retaliatory tariffs against U.S. exports. It is also anticipated that parties may bring litigation regarding the timeliness and appropriateness of the Trump administration’s actions. In light of the foregoing uncertainties, Ternium is unable at this time to predict the evolution or ultimate outcome of these developments or to quantify the impact that the new tariffs and measures would have on its business or financial condition.

18. SYNDICATED LOAN AGREEMENT TERNIUM MEXICO S.A. DE C.V.

On July 23, 2025, Ternium México entered into a $ 1,250 million syndicated loan agreement with several banks to finance and/or refinance capital, operating and research and development expenditures and other related investments associated with the DRI-EAF steelmaking plant at its Pesquería Industrial Center in México. The net proceeds from the loan are expected to be disbursed over the next twelve months. The Loan qualifies as “green” under the 2025 LMA and LSTA Green Loan Principles, promoting the development and integrity of green loan products.

The loan bears interest at SOFR plus 125 bps and must be repaid in six equal semi-annual installments, commencing in the 30th month anniversary of the effective date; the borrower may prepay the loan in whole or in part at any time.

Under the loan, Ternium Mexico is subject to certain covenants customary for transactions of this type, including compliance with a specified leverage ratio.

Pablo Brizzio

Chief Financial Officer


			Page 28 of			28

Ternium S.A. 6-K