Ternium (NYSE: TX) details 2025 ESG targets, $195M sustainability spend

Rhea-AI Filing Summary

Ternium S.A. filed a report highlighting the release of its Sustainability Report 2025, which outlines performance, strategy and governance across key ESG areas. The company consolidated Usiminas into its decarbonization target and aims to cut CO₂ equivalent emissions intensity per ton of hot-rolled steel equivalent by 15% by 2030, covering Scope 1, 2 and selected Scope 3 emissions.

Key initiatives include the Vientos de Olavarría wind farm in Argentina, which generated 434 GWh and replaced about 90% of Ternium Argentina’s prior grid electricity purchases, and the ongoing construction of a new DRI-EAF steel shop in Pesquería, Mexico, expected to start operations in early 2027. Solar power at the Ipatinga facility lifted renewable sources to roughly 20% of purchased electricity.

In 2025, Ternium invested $93 million in environmental, decarbonization and energy-efficiency projects and $102 million in occupational health and safety. It also expanded its Roberto Rocca Technical Schools in Brazil and Mexico, reporting strong student enrollment and a 95% curriculum completion rate. The report is aligned with ESRS, GRI, SASB, World Steel Association guidelines, TCFD recommendations and references contributions to the UN Sustainable Development Goals.

Key Figures

Environmental & efficiency investment: $93 million Health & safety investment: $102 million Emissions reduction target: 15% reduction +5 more

8 metrics

Environmental & efficiency investment $93 million Invested in 2025 in environmental, decarbonization and energy-efficiency initiatives

Health & safety investment $102 million Invested in 2025 in occupational health and safety programs

Emissions reduction target 15% reduction CO₂ equivalent emissions intensity per ton by 2030 vs 2024 base year

Wind power generation 434 GWh Vientos de Olavarría wind farm output in Argentina over the year

Grid electricity replacement 90% Share of Ternium Argentina’s previous grid purchases replaced by wind power

Renewables share at Ipatinga 20% Approximate share of renewable sources in purchased electricity mix

Brazil technical school students 192 students First-year enrollment at Roberto Rocca Technical School in Santa Cruz, Brazil

Curriculum completion rate 95% Curriculum completion at the Pesquería, Mexico technical school

Key Terms

Scope 3, GHG Protocol, CSRD reporting requirements, European Sustainability Reporting Standards (ESRS), +2 more

6 terms

Scope 3 financial

"covering Scope 1, Scope 2 and Scope 3 (categories 1 and 10) emissions"

Scope 3 describes all greenhouse gas emissions that occur upstream and downstream of a company’s direct operations—things like emissions from suppliers, transportation, product use, and disposal. Think of it as the hidden carbon footprint tied to everything a business buys, sells, or enables; it matters to investors because these indirect emissions can drive regulatory costs, supply-chain disruption, consumer preference shifts, and long-term valuation risk that aren’t visible on a company’s factory floor or utility bill.

GHG Protocol financial

"emissions under the GHG Protocol methodology, and including all steel mills"

CSRD reporting requirements regulatory

"Although Ternium is not currently subject to CSRD reporting requirements"

European Sustainability Reporting Standards (ESRS) regulatory

"prepared considering the European Sustainability Reporting Standards (ESRS) as a framework"

A set of detailed rules that companies use to report their environmental, social and governance (ESG) performance, covering things like emissions, resource use, workforce practices and governance. Think of it like a standardized nutrition label for sustainability: it makes company disclosures consistent and comparable so investors can better judge long‑term risks, regulatory compliance and opportunities tied to climate and social trends.

TCFD financial

"the recommendations of the TCFD, and describes the company's contributions"

A framework that guides companies on reporting how climate change and related policies, physical impacts, and market shifts affect their finances and business plans. It matters to investors because consistent, comparable disclosures act like a weather forecast for financial risk—helping assess which companies face greater climate-related danger or opportunity, improving decisions about value, risk allocation, and long-term planning.

UN's Sustainable Development Goals financial

"describes the company's contributions to the UN's Sustainable Development Goals"

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FAQ

What does Ternium (TX) announce in its 2025 Sustainability Report?

Ternium announces the release of its Sustainability Report 2025, detailing ESG performance, strategy, governance and risk management, including emissions targets, renewable energy use, social investments and alignment with multiple international reporting standards and frameworks.

What is Ternium’s CO₂ emissions reduction target in the 2025 report?

Ternium targets a 15% reduction in CO₂ equivalent emissions intensity per ton of hot-rolled steel equivalent by 2030, covering Scope 1, Scope 2 and specific Scope 3 categories under the GHG Protocol, and including all steel mills up to hot-rolling.

How much did Ternium (TX) invest in environment and safety in 2025?

In 2025, Ternium invested $93 million in environmental, decarbonization and energy-efficiency initiatives, and $102 million in occupational health and safety programs, reflecting significant capital dedicated to sustainability-related projects and worker protection measures across its operations.

What role does renewable energy play in Ternium’s 2025 sustainability efforts?

Renewable energy is central to Ternium’s efforts, with the Vientos de Olavarría wind farm generating 434 GWh and replacing about 90% of Ternium Argentina’s prior grid electricity, while solar power at Ipatinga raised renewable sources to about 20% of purchased electricity.

How is Ternium (TX) addressing education and community development?

Ternium supports education through Roberto Rocca Technical Schools. In 2025, its second school in Brazil welcomed 192 first-year students, while the Mexico school served 602 students and achieved a 95% curriculum completion rate, emphasizing technical training in key industrial disciplines.

Which reporting standards guide Ternium’s 2025 Sustainability Report?

The 2025 report considers European Sustainability Reporting Standards as a framework and also follows GRI and SASB standards, World Steel Association guidelines and TCFD recommendations, while describing contributions to the UN Sustainable Development Goals for broader transparency.

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 07/08/2026

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 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

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 press release announcing the release of the Sustainability Report 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: July 08, 2026

Sebastián Martí

Ternium - Investor Relations

+1 (866) 890 0443

+54 (11) 4018 8389

www.ternium.com

Ternium Releases Sustainability Report 2025

Luxembourg, July 08, 2026 – Ternium S.A. (NYSE: TX) today announced the release of its Sustainability Report 2025, presenting the company's performance, strategy, governance and risk management across key environmental, social and governance (ESG) dimensions.

Ternium consolidated Usiminas into its decarbonization target, with 2024 as the base year. The company aims to achieve a 15% reduction in CO₂ equivalent emissions intensity per ton of hot-rolled steel equivalent by 2030, covering Scope 1, Scope 2 and Scope 3 (categories 1 and 10) emissions under the GHG Protocol methodology, and including all steel mills up to the hot-rolling stage.

Key initiatives advanced during the year include the first full year of operations of the Vientos de Olavarría wind farm in Argentina, which generated 434 GWh and replaced approximately 90% of the electricity previously purchased from the national grid by Ternium Argentina; the ongoing construction of the new DRI-EAF steel shop in Pesquería, Mexico, expected to begin operations in early 2027; and the supply of solar electricity to the Ipatinga facility, raising the share of renewable sources in its purchased electricity mix to approximately 20%.

In 2025, Ternium invested $93 million in environmental, decarbonization and energy-efficiency initiatives, and $102 million in occupational health and safety programs. Ternium's second Roberto Rocca Technical School, located in Santa Cruz, Brazil, was inaugurated and completed its first year of operations, welcoming 192 first-year students specializing in Mechatronics and Electromechanics. In Pesquería, Mexico, the company's first technical school incorporated a middle-school level with 128 students, in addition to its technical high-school enrollment of 474 students, and continued to deliver strong academic results, with a 95% curriculum completion rate.

Although Ternium is not currently subject to CSRD reporting requirements, the 2025 Sustainability Report has been prepared considering the European Sustainability Reporting Standards (ESRS) as a framework, which the company is gradually incorporating into its disclosures. The report also follows the international standards set by the GRI and SASB, the guidelines from the World Steel Association, and the recommendations of the TCFD, and describes the company's contributions to the UN's Sustainable Development Goals.

The report is available at www.ternium.com.

Forward Looking Statements

Some of the statements contained in this press release are “forward-looking statements”. Forward-looking statements are based on management’s current views and assumptions and involve known and unknown risks that could cause actual results, performance or events to differ materially from those expressed or implied by those statements. These risks include but are not limited to risks arising from uncertainties as to gross domestic product, related market demand, global production capacity, tariffs, cyclicality in the industries that purchase steel products, and other factors beyond Ternium’s control.

About Ternium

Ternium is a leading steel producer in the Americas, providing advanced steel products to a wide range of manufacturing industries and the construction sector. We invest in low carbon emissions steelmaking technologies to support the energy transition and the mobility of the future. We also support the development of our communities, especially through educational programs in Latin America. More information about Ternium is available at www.ternium.com.