Tenaris files 2025 annual report on Form 6-K

Tenaris S.A. submitted a Form 6-K as a foreign private issuer to furnish its 2025 Annual Report to the U.S. Securities and Exchange Commission.

Accepted by SEC EDGAR 03/31/2026 - 05:01 PM EDT Learn about SEC filing dates

Rhea-AI Filing Summary

Tenaris S.A. submitted a Form 6-K as a foreign private issuer to furnish its 2025 Annual Report to the U.S. Securities and Exchange Commission. The report, originally filed with the Luxembourg Stock Exchange, includes the consolidated management report with financial and non-financial (sustainability) information, management certifications on the consolidated financial statements and annual accounts as of 31 December 2025, and the external auditors’ reports on those documents.

Key Figures

Financial year end: 31 December 2025

1 metrics

Financial year end 31 December 2025 Consolidated financial statements and annual accounts period

Key Terms

Foreign Private Issuer, Form 6-K, consolidated management report, sustainability statement, +1 more

5 terms

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 6-K regulatory

"The attached material is being furnished ... pursuant to Rule 13a-16 and Form 6-K"

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.

consolidated management report financial

"which includes the consolidated management report containing the financial and non-financial information"

sustainability statement financial

"non-financial information (or sustainability statement) required by applicable law"

A sustainability statement explains a company’s goals, policies and progress on environmental, social and governance issues—like pollution, worker treatment and ethical management—using clear targets and measures. Investors use it like a company’s health map: it signals future risks and opportunities, such as regulatory costs, supply-chain disruptions or reputation gains, helping assess long-term stability and whether the business is managing non-financial threats that can affect returns.

external auditors’ reports financial

"and the external auditors’ reports on such consolidated financial statements, annual accounts and sustainability statement"

FAQ

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

What did Tenaris (TS) file with the SEC in this Form 6-K?

Tenaris filed a Form 6-K to furnish its 2025 Annual Report. This includes the consolidated management report, management certifications, and external auditors’ reports on 2025 financial statements and sustainability information.

Which financial period does Tenaris' 2025 Annual Report on Form 6-K cover?

The 2025 Annual Report covers Tenaris’ consolidated financial statements and annual accounts as of and for the year ended 31 December 2025. It also includes related management certifications and auditors’ reports.

What information is included in Tenaris (TS) 2025 consolidated management report?

The consolidated management report includes financial and non-financial information, also described as a sustainability statement. It forms part of the 2025 Annual Report furnished with this Form 6-K filing.

Does the Tenaris Form 6-K include external auditors’ reports?

Yes. The filing states that the 2025 Annual Report includes external auditors’ reports on the consolidated financial statements, on the annual accounts, and on the sustainability statement for the year ended 31 December 2025.

Under which annual report form does Tenaris (TS) file with the SEC?

Tenaris indicates it files annual reports under Form 20-F. This Form 6-K is a separate report used by foreign private issuers to furnish additional information such as the 2025 Annual Report.

Where was Tenaris’ 2025 Annual Report originally filed before this Form 6-K?

The 2025 Annual Report was filed with the Luxembourg Stock Exchange. The Form 6-K furnishes this same report, including its attachments, to the U.S. Securities and Exchange Commission.

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

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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 Ö 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' 2025 Annual Report filed with the Luxembourg Stock Exchange (which includes the consolidated management report containing the financial and non-financial information (or sustainability statement) required by applicable law; the related management certifications on the consolidated financial statements as of and for the year ended 31st December 2025, and on the annual accounts as at 31st December 2025; and the external auditors’ reports on such consolidated financial statements, annual accounts and sustainability statement).

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

EXHIBIT INDEX

Exhibit Number		Description
99.1		Annual Report 2025

Filing Exhibits & Attachments

1 document

Press Releases

• EX-99.1 EXHIBIT 99.1 5.5 MB