Company: TNRSF
Filing Date: 2025-10-31
Form Type: 6-K
Source: 0001171843-25-006843
Chunk: 0

Company: TENARIS SA
Filing Date: 2025-10-31
Form: 6-K
Chunk 0
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<div align='center'>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</div>

As of October 30, 2025

<div align='center'>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</div>

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 announcement regarding
Tenaris S.A. 2025 Third Quarter Results Conference Call.

<div align='center'>SIGNATURE</div>

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: October 30, 2025

<div align='center'>Tenaris, S.A.</div>

By: /s/ Giovanni Sardagna

Giovanni Sardagna

Investor Relations Officer

Giovanni Sardagna

Tenaris

1-888-300-5432

www.tenaris.com

Tenaris S.A. 2025 Third Quarter Results Conference Call.

On 30October 2025, Paolo Rocca, Chairman and Chief Executive Officer of Tenaris
S.A. (“Tenaris” or the “Company”) and other members of the Company’s senior management participated in an
audio conference with investors and analysts to discuss, among other things, the Company’s results, market background and outlook.
You may access the audio conference at Tenaris Investor Relations website at: ir.tenaris.com/events-and-presentations

Cautionary Statement Regarding Forward-Looking Statements

The audio conference referred to above contains
“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