Tenaris files 2025 Annual Report and Form 20-F

Tenaris S.A. has filed its 2025 Annual Report with the Luxembourg Stock Exchange, the U.S. SEC and other regulators where its securities are listed.

Rhea-AI Filing Summary

Tenaris S.A. has filed its 2025 Annual Report with the Luxembourg Stock Exchange, the U.S. SEC and other regulators where its securities are listed. The report covers the year ended December 31, 2025 and is available online from the Luxembourg exchange and Tenaris’s investor relations website.

The company will also file its 2025 annual report on Form 20‑F with the SEC on March 31, 2026, which will likewise be accessible on the SEC’s and Tenaris’s websites. Share and ADS holders can request hard copies of these reports free of charge. Tenaris describes itself as a leading global supplier of steel tubes and related services for the energy industry and other industrial applications.

Key Figures

Reporting year: 2025 Year-end date: December 31, 2025 Form 20-F filing date: March 31, 2026

3 metrics

Reporting year 2025 Year covered by Tenaris Annual Report and Form 20-F

Year-end date December 31, 2025 Fiscal year end for the 2025 annual reports

Form 20-F filing date March 31, 2026 Planned SEC filing date for Tenaris 2025 Form 20-F

Key Terms

Form 6-K, foreign private issuer, Form 20-F, American Depositary Shares (ADSs)

4 terms

Form 6-K regulatory

"FORM 6 - K SECURITIES AND EXCHANGE COMMISSION Report of Foreign Private Issuer"

A Form 6-K is a report that companies listed in certain countries file to provide important updates, such as financial results, corporate changes, or other significant information, to regulators and investors. It functions like an official company update or news release, helping investors stay informed about developments that could affect their investment decisions.

foreign private issuer regulatory

"Report of Foreign Private Issuer Pursuant to Rule 13a - 16"

A foreign private issuer is a company organized outside the United States that meets tests showing it is primarily foreign-controlled and therefore qualifies for a different set of U.S. reporting rules. For investors, that means the company files less frequent or differently formatted disclosures with U.S. regulators and may follow home-country accounting and governance practices, so buying its stock is like dining at a well-reviewed restaurant that follows its home kitchen’s rules instead of the local menu — you get access but should check what standards apply.

Form 20-F regulatory

"Tenaris Files its 2025 Annual Report and its Annual Report on Form 20-F."

Form 20-F is the standardized annual disclosure that non-U.S. companies must file with the U.S. securities regulator when their shares are traded in the U.S.; it contains audited financial statements, a plain-language description of the business, management discussion, governance details and key risk factors. It matters to investors because it provides a consistent, comparable company “report card” and rulebook, helping buyers assess financial health, governance and risks before investing.

American Depositary Shares (ADSs) financial

"Holders of Tenaris’s shares and ADSs, and any other interested parties, may request"

A U.S.-listed certificate that stands for a specific number of shares in a non‑U.S. company held by a U.S. bank, making the foreign stock tradable on American exchanges in dollars. Think of it like a local voucher that represents ownership of an overseas product — it lets U.S. investors buy and sell foreign companies without handling foreign currency or foreign brokerage accounts, but it can affect dividends, voting rights, fees, liquidity and exposure to currency and regulatory differences.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What does Tenaris (TS) announce in this Form 6-K filing?

Tenaris announces it has filed its 2025 Annual Report with the Luxembourg Stock Exchange, the U.S. SEC and other regulators. It also states it will file its 2025 Form 20-F with the SEC, making detailed annual information available to investors.

Where can investors access Tenaris’s 2025 Annual Report?

Investors can download Tenaris’s 2025 Annual Report from the Luxembourg Stock Exchange website and from the company’s investor relations site at ir.tenaris.com. These online versions provide electronic access to the company’s full-year information and disclosures.

When will Tenaris (TS) file its 2025 Form 20-F with the SEC?

Tenaris states it will file its 2025 annual report on Form 20-F with the U.S. SEC on March 31, 2026. Once filed, the Form 20-F will be available on the SEC’s website and on Tenaris’s investor relations website for public access.

How can Tenaris shareholders and ADS holders obtain hard copies of the 2025 reports?

Holders of Tenaris’s shares and ADSs, and other interested parties, may request hard copies of the 2025 Annual Report and the Form 20-F free of charge. Requests can be made through the printed materials section of the company’s investor relations website at ir.tenaris.com.

What kind of business does Tenaris (TS) describe in this filing?

Tenaris describes itself as a leading global supplier of steel tubes and related services for the world’s energy industry and certain other industrial applications. This highlights its primary role in providing tubular products and services to energy and industrial customers worldwide.

Which stock exchanges list Tenaris shares referenced in this Form 6-K?

Tenaris notes its shares are listed on the New York Stock Exchange and the Mexican Stock Exchange under the symbol TS, and on EXM Italy under the symbol TEN. These listings give investors multiple markets where the company’s securities trade.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Accepted by SEC EDGAR 03/31/2026 - 06:02 AM Learn about SEC filing dates

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 March 30, 2026

TENARIS, S.A.

(Translation of Registrant's name into English)

26, Boulevard Royal, 4th floor

L-2449 Luxembourg

(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 ___

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 Tenaris’s Press Release announcing Tenaris Files its 2025 Annual Report and its Annual Report on Form 20-F.

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.

Date: March 30, 2026

Tenaris, S.A.

By: /s/ Giovanni Sardagna

Giovanni Sardagna

Investor Relations Officer

Giovanni Sardagna

Tenaris

1-888-300-5432

www.tenaris.com

Tenaris Files its 2025 Annual Report and its Annual Report on Form 20-F.

Luxembourg, March 30, 2026 – Tenaris S.A. (NYSE and Mexico: TS and EXM Italy: TEN) filed today its 2025 Annual Report with the Luxembourg Stock Exchange, with the U.S. Securities and Exchange Commission (SEC) and with the other securities regulators of the markets where its securities are listed.

The 2025 Annual Report, which may be downloaded from the Luxembourg Stock Exchange’s website at www.bourse.lu/regulated-information-oam and is also available on Tenaris’s website at ir.tenaris.com, includes the following:

· a consolidated management report containing the financial and non-financial information (or sustainability statement) required by applicable law;

· the consolidated financial statements as of and for the year ended 31^st December 2025;

· the annual accounts as at 31^st December 2025; and

· the management certifications and external auditors’ reports on such consolidated financial statements, annual accounts and sustainability statement.

Tenaris will also file tomorrow, March 31, 2026, its annual report on Form 20-F for the year ended December 31, 2025, with the U.S. Securities and Exchange Commission (SEC). The 2025 annual report on Form 20-F will be available to be downloaded from the SEC’s website at www.sec.gov and from Tenaris’s website at ir.tenaris.com.

Holders of Tenaris’s shares and ADSs, and any other interested parties, may request a hard copy of any of these reports, free of charge, through our website at ir.tenaris.com/tools/printed-materials.

Tenaris is a leading global supplier of steel tubes and related services for the world’s energy industry and certain other industrial applications.