Tenaris (OTC: TNRSF) reports Sept. share buyback activity update details

Rhea-AI Filing Summary

Tenaris S.A. reports progress on the first tranche of its previously announced USD1.2 billion share buyback program, which includes up to USD600 million to be executed in the open market. From September 29 to September 30, 2025, the company repurchased 658,084 ordinary shares for a total consideration of €10,038,322, equivalent to USD11,792,279.

As of September 30, 2025, Tenaris held 33,059,955 ordinary shares in treasury, representing 3.08% of its total issued share capital. The company states that it intends to cancel the treasury shares purchased under the buyback programs in due course, reducing the number of shares outstanding over time.

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

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 September 30, 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 (September 29, 2025 – September 30, 2025) on the First 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: September 30, 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 (September 29, 2025 – September 30, 2025) on the First Tranche of Tenaris Share Buyback Program.

Luxembourg, September 30, 2025. - Tenaris S.A. (NYSE and Mexico: TS and EXM Italy: TEN) (“Tenaris”) announced today that pursuant to its First Tranche of the USD1.2 billion Share Buyback Program announced on June 6, 2025, covering up to USD600 million to be executed in the open market, it has repurchased the following ordinary shares from September 29, 2025 to (and including) September 30, 2025:

From September 29, 2025 to (and including) September 30, 2025, the Company has purchased a total of 658,084 ordinary shares for a total consideration of €10,038,322, equivalent to USD11,792,279.

As of September 30, 2025, the Company held in treasury 33,059,955 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.

FAQ

What did Tenaris (TNRSF) report in its latest 6-K filing?

Tenaris reported a weekly update on the first tranche of its USD1.2 billion share buyback program, detailing share repurchases made between September 29 and September 30, 2025.

How many Tenaris shares were repurchased between September 29 and 30, 2025?

Between September 29 and 30, 2025, Tenaris repurchased 658,084 ordinary shares for a total consideration of €10,038,322, equivalent to USD11,792,279.

What portion of Tenaris’s share capital is held in treasury after this buyback period?

As of September 30, 2025, Tenaris held 33,059,955 ordinary shares in treasury, equal to 3.08% of its total issued share capital.

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

Tenaris is executing a USD1.2 billion share buyback program announced on June 6, 2025, with the first tranche covering up to USD600 million to be executed in the open market.

What does Tenaris plan to do with the treasury shares it repurchases?

Tenaris states that it intends to cancel the treasury shares purchased under the buyback programs in due course, which would reduce the number of shares outstanding.

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

Details of the transactions under the share buyback program are available on Tenaris’s corporate website in the Share Buyback Program section.

What business is Tenaris involved 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.