# EDGAR Filing Document

**Accession Number:** 0001190723
**File Stem:** 0001171843-26-002101
**Filing Date:** 2026-3
**Character Count:** 2803
**Document Hash:** 7c505ba07386805334eae96e40bb1765
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001171843-26-002101.hdr.sgml**: 20260331

**ACCESSION NUMBER**: 0001171843-26-002101

**CONFORMED SUBMISSION TYPE**: 6-K

**PUBLIC DOCUMENT COUNT**: 2

**CONFORMED PERIOD OF REPORT**: 20260330

**FILED AS OF DATE**: 20260331

**DATE AS OF CHANGE**: 20260331

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** TENARIS SA
- **CENTRAL INDEX KEY:** 0001190723
- **STANDARD INDUSTRIAL CLASSIFICATION:** STEEL WORKS, BLAST FURNACES  ROLLING MILLS (COKE OVENS) [3312]
- **ORGANIZATION NAME:** 04 Manufacturing
- **EIN:** 000000000

**FILING VALUES:**
- **FORM TYPE:** 6-K
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-31518
- **FILM NUMBER:** 26823167

**BUSINESS ADDRESS:**
- **STREET 1:** 26, BOULEVARD ROYAL, 4TH FLOOR
- **CITY:** LUXEMBOURG
- **STATE:** N4
- **ZIP:** L-2449
- **BUSINESS PHONE:** 1-888-300-5432

**MAIL ADDRESS:**
- **STREET 1:** 26, BOULEVARD ROYAL, 4TH FLOOR
- **CITY:** LUXEMBOURG
- **STATE:** N4
- **ZIP:** L-2449

**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 <u>Ö</u> 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**

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| | |
|:---|:---|
| **Exhibit Number** | **Description** |
| [99.1](exh_991.pdf) | [Annual Report 2025](exh_991.pdf) |

---

### Attached PDF Documents

**Attachment 1:** `exh_991.pdf`

_No text found in this document._