Company: TNRSF
Filing Date: 2025-05-01
Form Type: 6-K
Source: 0001171843-25-002694
Chunk: 0

Company: TENARIS SA
Filing Date: 2025-05-01
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 April 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 _Ö_ 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.A. Consolidated Condensed
Interim Financial Statements for the three-month period ended March 31, 2025.

<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: April 30, 2025

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

By: /s/ Giovanni Sardagna

Giovanni Sardagna

Investor Relations Officer

CONSOLIDATED CONDENSED INTERIM INCOME STATEMENTS

|                                                                               |     |       |     | Three-month period ended March 31, |       2025 |   |     |     |       2024 |   |
|:------------------------------------------------------------------------------|:----|------:|:----|:-----------------------------------|-----------:|:--|:----|:----|-----------:|:--|
|                                                                               |     | Notes |     | -Unaudited                         |            |   |     |     |            |   |
| Net sales                                                                     |     |     3 |     |                                    |  2,922,212 |   |     |     |  3,441,544 |   |
| Cost of sales                                                                 |     |     4 |     |                                    | (1,920,855 | ) |     |     |