Tenaris weekly update: treasury shares reach 3.08% of capital

Rhea-AI Filing Summary

Tenaris S.A. reported progress on the second tranche of its USD1.2 billion share buyback program. Between November 10 and November 14, 2025, the company repurchased 5,445 ordinary shares for a total consideration of €96,639, equivalent to USD112,053. As of November 14, 2025, Tenaris held 33,065,400 ordinary shares in treasury, representing 3.08% of its total issued share capital. The company intends to cancel treasury shares purchased under the programs in due course and continues executing repurchases in the open market under the second tranche of up to USD600 million.

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Form 6-K: How Foreign Companies Report to the SEC →

Accepted by SEC EDGAR 11/14/2025 - 08:34 PM Learn about SEC filing dates

FAQ

What did Tenaris S.A. (TS) report in this Form 6-K?

Tenaris reported a weekly update on the second tranche of its USD1.2 billion share buyback program, summarizing share repurchases made from November 10 to November 14, 2025.

How many shares did Tenaris (TS) repurchase in the week of November 10–14, 2025?

During this period, Tenaris repurchased 5,445 ordinary shares for a total consideration of €96,639, equivalent to USD112,053.

What is the size of Tenaris’s current share buyback program?

Tenaris is executing the Second Tranche of its USD1.2 billion Share Buyback Program, with this tranche covering up to USD600 million of repurchases in the open market.

How many treasury shares does Tenaris hold after these repurchases?

As of November 14, 2025, Tenaris held 33,065,400 ordinary shares in treasury, representing 3.08% of its total issued share capital.

What does Tenaris plan to do with the repurchased shares?

Tenaris states that it intends to cancel treasury shares purchased under its buyback programs in due course.

Where can investors find detailed trade data for Tenaris’s buyback transactions?

Details of the transactions are available on Tenaris’s corporate website under the Share Buyback Program section at https://ir.tenaris.com/share-buyback-program.

What industry does Tenaris (TS) operate in?

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

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 November 14, 2025

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 Weekly Report (November 10, 2025 – November 14, 2025) on the Second Tranche of Tenaris Share Buyback Program.

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: November 14, 2025

Tenaris, S.A.

By: /s/ Giovanni Sardagna

Giovanni Sardagna

Investor Relations Officer

Giovanni Sardagna

Tenaris

1-888-300-5432

www.tenaris.com

Weekly Report (November 10, 2025 – November 14, 2025) on the Second Tranche of Tenaris Share Buyback Program.

Luxembourg, November 14, 2025. - Tenaris S.A. (NYSE and Mexico: TS and EXM Italy: TEN) (“Tenaris”) announced today that pursuant to its Second Tranche of the USD1.2 billion Share Buyback Program announced on November 2, 2025, covering up to USD600 million to be executed in the open market, it has repurchased the following ordinary shares from November 10, 2025 to (and including) November 14, 2025:

From November 10, 2025 to (and including) November 14, 2025, the Company has purchased a total of 5,445 ordinary shares for a total consideration of €96,639, equivalent to USD112,053.

As of November 14, 2025, the Company held in treasury 33,065,400 ordinary shares equal to 3.08% of the total issued share capital.

Tenaris intends to cancel treasury shares purchased under the Programs in due course.

Details of the above transactions, are available on Tenaris’s corporate website under the Share Buyback Program Section https://ir.tenaris.com/share-buyback-program.

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 future oil and gas prices and their impact on investment programs by oil and gas companies.

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