TNRSF / Tenaris S.A. - تصريحات هيئة الأوراق المالية والبورصات، التقرير السنوي، بيان الوكيل

تيناريس سا
US ˙ OTCPK ˙ LU2598331598

الإحصائيات الأساسية
LEI 549300Y7C05BKC4HZB40
CIK 1190723
SEC Filings
All companies that sell securities in the United States must register with the Securities and Exchange Commission (SEC) and file reports on a regular basis. These reports include company annual reports (10K, 10Q), news updates (8K), investor presentations (found in 8Ks), insider trades (form 4), ownership reports (13D, and 13G), and reports related to the specific securities sold, such as registration statements and prospectus. This page shows recent SEC filings related to Tenaris S.A.
SEC Filings (Chronological Order)
توفر هذه الصفحة قائمة كاملة ومرتبة ترتيبًا زمنيًا لتصريحات هيئة الأوراق المالية والبورصات، باستثناء تصريحات الملكية التي نقدمها في مكان آخر.
September 2, 2025 6-K

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

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 August 29, 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 f

August 25, 2025 6-K

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

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 August 22, 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 f

August 18, 2025 6-K

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

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 August 15, 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 f

August 11, 2025 6-K

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

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 August 8, 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 fi

August 4, 2025 6-K

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

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 August 1, 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 fi

August 1, 2025 6-K

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

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 July 31, 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 fil

August 1, 2025 6-K

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

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 30 July, 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 fil

August 1, 2025 6-K

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

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 30 July, 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 fil

July 31, 2025 6-K

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

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 July 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 fil

July 28, 2025 6-K

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

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 July 25, 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 fil

July 21, 2025 6-K

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

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 July 18, 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 fil

July 14, 2025 6-K

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

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 July 11, 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 fil

July 7, 2025 6-K

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

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 July 4, 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 file

June 30, 2025 6-K

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

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 June 27, 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 fil

June 23, 2025 6-K

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

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 June 20, 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 fil

June 20, 2025 6-K

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

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 June 18, 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 fil

June 16, 2025 6-K

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

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 June 13, 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 fil

June 9, 2025 6-K

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

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 June 6, 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 file

May 28, 2025 6-K

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

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 May 27, 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 file

May 7, 2025 6-K

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

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 May 6, 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

May 7, 2025 6-K

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

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 May 6, 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

May 7, 2025 6-K

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

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 May 6, 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

May 5, 2025 6-K

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

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 May 1, 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

May 1, 2025 6-K

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

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 April 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 fi

May 1, 2025 6-K

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

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 April 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 fi

April 30, 2025 SD

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD SPECIALIZED DISCLOSURE REPORT TENARIS S.A. (Exact name of Registrant as specified in its charter) (Translation of Registrant’s name into English) Grand Duchy of Luxembour

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD SPECIALIZED DISCLOSURE REPORT TENARIS S.A. (Exact name of Registrant as specified in its charter) N/A (Translation of Registrant’s name into English) Grand Duchy of Luxembourg (Jurisdiction of incorporation or organization) 001-31518 (Commission File Number) N/A (IRS Employer Identification No.) 26, Boulevard Royal, 4t

April 7, 2025 6-K

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

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 April 4, 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 fil

April 4, 2025 6-K

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

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 April 1, 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 fil

April 2, 2025 6-K

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

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 April 1, 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 fil

April 1, 2025 EX-1.1

EX-1.1

Exhibit 1.1 a a a a a a a a a a a a a a a a a a a a

April 1, 2025 EX-12.1

CERTIFICATE

Exhibit 12.1 CERTIFICATE I, PAOLO ROCCA, CERTIFY THAT: 1. I have reviewed this annual report on Form 20-F of Tenaris S.A.; 2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period

April 1, 2025 20-F

The Offer and Listing Report of Independent Registered Public Accounting Firm Report of Independent Registered Public Accounting Firm

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 20-F (Mark One) ☐ Registration statement pursuant to Section 12(b) or 12(g) of the Securities Exchange Act of 1934 or ☒ Annual report pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 for the fiscal year ended December 31,2024 or ☐ Transition report pursuant to Section 13 or 15(d) of the Securities Ex

April 1, 2025 EX-12.2

CERTIFICATE

Exhibit 12.2 CERTIFICATE I, ALICIA MÓNDOLO, CERTIFY THAT: 1. I have reviewed this annual report on Form 20-F of Tenaris S.A.; 2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the per

April 1, 2025 EX-15.1

At December 31,

Exhibit 15.1 Ratios Liquid financial assets to total assets At December 31, Thousands of U.S. dollars 2024 2023 2022 Cash and cash equivalents 675,256 1,637,821 1,091,527 Other current investments 2,372,999 1,969,631 438,448 Non-current investments 998,251 398,220 113,574 Liquid financial assets 4,046,506 4,005,672 1,643,549 Total assets 20,450,125 21,081,895 17,550,246 Ratio 0.20 0.19 0.09 Total

April 1, 2025 EX-15.2

For the year ended December 31,

Exhibit 15.2 Alternative performance measures EBITDA, Earnings before interest, tax, depreciation and amortization EBITDA provides an analysis of the operating results excluding depreciation and amortization and impairments, as they are non-cash variables which can vary substantially from company to company depending on accounting policies and the accounting value of the assets. EBITDA is an appro

April 1, 2025 EX-13.1

CERTIFICATION PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 (SUBSECTIONS (A) AND (B) OF SECTION 1350, CHAPTER 63 OF TITLE 18, UNITED STATES CODE)

Exhibit 13.1 CERTIFICATION PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 (SUBSECTIONS (A) AND (B) OF SECTION 1350, CHAPTER 63 OF TITLE 18, UNITED STATES CODE) Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 (Subsections (a) and (b) of Section 1350, Chapter 63 of Title 18, United States Code), the undersigned officer of Tenaris S.A. (the “Company”), hereby certifies, to such o

April 1, 2025 EX-11.1

1.

Exhibit 11.1 Document Type Policy Level Level 1 Code / Rev POL11135/1 Official Language English Effective Date 10/Jul/2017 Replaces and Supersedes POL11135/0 This document has been fully reviewed. This document as well as the information or data contained herein are the exclusive property of Tenaris S.A. and of its affiliated companies and as such must be considered confidential. This document or

April 1, 2025 EX-13.2

CERTIFICATION PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 (SUBSECTIONS (A) AND (B) OF SECTION 1350, CHAPTER 63 OF TITLE 18, UNITED STATES CODE)

Exhibit 13.2 CERTIFICATION PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 (SUBSECTIONS (A) AND (B) OF SECTION 1350, CHAPTER 63 OF TITLE 18, UNITED STATES CODE) Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 (Subsections (a) and (b) of Section 1350, Chapter 63 of Title 18, United States Code), the undersigned officer of Tenaris S.A. (the “Company”), hereby certifies, to such o

April 1, 2025 EX-15.3

EY CHANGE IN AUDITORS ITEM 16 F LETTER

Exhibit 15.3 EY CHANGE IN AUDITORS ITEM 16 F LETTER Securities and Exchange Commission 100 F Street, N.E. Washington, DC 20549 Ladies and Gentlemen We have read Change in Registrant’s Certifying Accountant pursuant to Item 16F on page 220 of Form 20-F dated April 1, 2025 of Tenaris S.A. and are in agreement with the statements contained in paragraph 3. We have no basis to agree or disagree with ot

March 5, 2025 6-K

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

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 4, 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 fil

March 5, 2025 6-K

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

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 4, 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 fil

February 28, 2025 6-K

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

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 February 28, 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

February 25, 2025 6-K

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

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 February 21, 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

February 25, 2025 6-K

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

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 February 20, 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

February 21, 2025 6-K

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

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 February 19, 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

February 20, 2025 6-K

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

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 February 19, 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

February 14, 2025 6-K

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

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 February 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

February 10, 2025 6-K

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

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 February 7, 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

January 31, 2025 6-K

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

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 January 31, 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

January 27, 2025 6-K

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

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 January 24, 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

January 17, 2025 6-K

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

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 January 17, 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

January 13, 2025 6-K

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

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 January 10, 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

January 3, 2025 6-K

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

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 January 3, 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 f

December 27, 2024 6-K

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

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 December 27, 2024 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

December 23, 2024 6-K

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

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 December 20, 2024 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

December 16, 2024 6-K

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

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 December 13, 2024 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

December 9, 2024 6-K

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

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 December 6, 2024 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

December 9, 2024 6-K

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

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 December 6, 2024 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

December 9, 2024 SC 13D/A

AR:TEN / Tenaris S.A. - Depositary Receipt (Common Stock) / SAN FAUSTIN S.A. - AMENDMENT NO. 9 TO SCHEDULE 13D Activist Investment

SC 13D/A 1 ea0224105-13da9santenaris.htm AMENDMENT NO. 9 TO SCHEDULE 13D UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 13D Under the Securities Exchange Act of 1934 (Amendment No. 9)* Tenaris S.A. (Name of Issuer) Ordinary Shares, $1.00 par value per share (Title of Class of Securities) 88031 M 10 9 (CUSIP Number) Fernando J. Mantilla 26, Boulevard Royal, Ground

December 2, 2024 6-K

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

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 29, 2024 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

November 22, 2024 6-K

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

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 22, 2024 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

November 22, 2024 6-K

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

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 22, 2024 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

November 18, 2024 6-K

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

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 15, 2024 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

November 12, 2024 6-K

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

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 7 November, 2024 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

November 12, 2024 6-K

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

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 10, 2024 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

November 7, 2024 6-K

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

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 6, 2024 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

November 7, 2024 6-K

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

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 6 November, 2024 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

September 26, 2024 6-K

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

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 24 September, 2024 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 registran

August 6, 2024 6-K

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

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 1 August, 2024 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 fi

August 5, 2024 6-K

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

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 August 4, 2024 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 fi

August 5, 2024 6-K

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

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 August 4, 2024 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 fi

August 2, 2024 6-K

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

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 31 July, 2024 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 fil

August 2, 2024 6-K

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

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 31 July, 2024 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 fil

August 1, 2024 6-K

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

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 July 31, 2024 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 fil

July 30, 2024 SC 13D/A

AR:TEN / Tenaris S.A. - Depositary Receipt (Common Stock) / SAN FAUSTIN S.A. - AMENDMENT NO. 8 TO SCHEDULE 13D Activist Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 13D Under the Securities Exchange Act of 1934 (Amendment No. 8)* Tenaris S.A. (Name of Issuer) Ordinary Shares, $1.00 par value per share (Title of Class of Securities) 88031 M 10 9 (CUSIP Number) Fernando J. Mantilla 26, Boulevard Royal, Ground Floor, L-2449 Luxembourg, Grand-Duchy of Luxembourg Telephone: +352 27209

July 29, 2024 6-K

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

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 July 26, 2024 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 fil

July 22, 2024 6-K

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

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 July 19, 2024 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 fil

July 15, 2024 6-K

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

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 July 12, 2024 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 fil

July 8, 2024 6-K

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

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 July 5, 2024 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 file

July 1, 2024 6-K

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

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 June 28, 2024 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 fil

June 24, 2024 6-K

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

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 June 21, 2024 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 fil

June 18, 2024 6-K

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

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 June 18, 2024 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 fil

June 17, 2024 6-K

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

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 June 14, 2024 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 fil

June 17, 2024 6-K

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

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 June 14, 2024 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 fil

June 10, 2024 6-K

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

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 June 7, 2024 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 file

June 4, 2024 SC 13D/A

AR:TEN / Tenaris S.A. - Depositary Receipt (Common Stock) / SAN FAUSTIN S.A. - AMENDMENT NO. 7 TO SCHEDULE 13D Activist Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 13D Under the Securities Exchange Act of 1934 (Amendment No. 7)* Tenaris S.A. (Name of Issuer) Ordinary Shares, $1.00 par value per share (Title of Class of Securities) 88031 M 10 9 (CUSIP Number) Fernando J. Mantilla 26, Boulevard Royal, Ground Floor, L-2449 Luxembourg, Grand-Duchy of Luxembourg Telephone: +352 27209

June 3, 2024 6-K

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

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 May 31, 2024 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 file

May 28, 2024 6-K

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

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 May 25, 2024 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 file

May 28, 2024 SD

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD SPECIALIZED DISCLOSURE REPORT TENARIS S.A. (Exact name of Registrant as specified in its charter) (Translation of Registrant’s name into English) Grand Duchy of Luxembour

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD SPECIALIZED DISCLOSURE REPORT TENARIS S.A. (Exact name of Registrant as specified in its charter) N/A (Translation of Registrant’s name into English) Grand Duchy of Luxembourg (Jurisdiction of incorporation or organization) 001-31518 (Commission File Number) N/A (IRS Employer Identification No.) 26, Boulevard Royal, 4t

May 13, 2024 6-K

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

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 May 12, 2024 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 file

May 2, 2024 6-K

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

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 April 30, 2024 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 fi

May 2, 2024 6-K

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

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 April 30, 2024 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 fi

May 2, 2024 6-K

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

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 May 1, 2024 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

May 1, 2024 6-K

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

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 April 30, 2024 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 fi

April 29, 2024 6-K

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

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 April 26, 2024 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 fi

April 29, 2024 6-K

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

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 April 26, 2024 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 fi

April 29, 2024 6-K

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

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 April 25, 2024 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 fi

April 29, 2024 6-K

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

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 April 25, 2024 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 fi

April 22, 2024 6-K

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

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 April 19, 2024 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 fi

April 15, 2024 6-K

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

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 April 12, 2024 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 fi

April 8, 2024 6-K

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

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 April 5, 2024 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 fil

March 29, 2024 6-K

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

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 28, 2024 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 fi

March 29, 2024 6-K

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

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 28, 2024 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 fi

March 28, 2024 EX-12.2

CERTIFICATE

Exhibit 12.2 CERTIFICATE I, ALICIA MÓNDOLO, CERTIFY THAT: 1. I have reviewed this annual report on Form 20-F of Tenaris S.A.; 2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the per

March 28, 2024 EX-2.2

Description of securities

Exhibit 2.2 Description of securities The shares of Tenaris S.A. (the “Company”) are listed on the Mexican Stock Exchange and its ADSs are listed on the NYSE under the symbol “TS”. The shares are also listed on the Italian Stock Exchange under the symbol “TEN”. Trading on the NYSE and the Mexican Stock Exchange began on December 16, 2002, and trading on the Italian Stock Exchange began on December

March 28, 2024 EX-15.3

100 F Street, N.E.

Exhibit 15.3 Securities and Exchange Commission 100 F Street, N.E. Washington, DC 20549 Commissioners: We have read the statements made by Tenaris S.A. (copy attached), which we understand will be filed with the Securities and Exchange Commission, pursuant to Item 16F of Form 20-F of Tenaris S.A. dated 27 March 2024. We agree with the statements concerning our Firm contained therein. Very truly yo

March 28, 2024 EX-13.1

CERTIFICATION PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 (SUBSECTIONS (A) AND (B) OF SECTION 1350, CHAPTER 63 OF TITLE 18, UNITED STATES CODE)

Exhibit 13.1 CERTIFICATION PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 (SUBSECTIONS (A) AND (B) OF SECTION 1350, CHAPTER 63 OF TITLE 18, UNITED STATES CODE) Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 (Subsections (a) and (b) of Section 1350, Chapter 63 of Title 18, United States Code), the undersigned officer of Tenaris S.A. (the “Company”), hereby certifies, to such o

March 28, 2024 EX-15.1

At December 31,

Exhibit 15.1 Ratios Liquid financial assets over total assets At December 31, Thousands of U.S. dollars 2023 2022 2021 Cash and cash equivalents 1,637,821 1,091,527 318,127 Other current investments 1,969,631 438,448 397,849 Non-current investments 398,220 113,574 312,619 Liquid financial assets 4,005,672 1,643,549 1,028,595 Total assets 21,081,895 17,550,246 14,449,431 Ratio 0.19 0.09 0.07 Total

March 28, 2024 EX-97.1

Tenaris Clawback Policy

Exhibit 97.1 Tenaris Clawback Policy 1 Contents 1. Introduction and purpose. 3 2. Scope and application. 3 3. Incentive-based compensation. 3 4. Erroneously awarded compensation. 4 5. Recovery period. 4 6. Triggering events and recovery procedure. 4 7. Exceptions 5 8. Prohibition against indemnification 5 9. Supplemental Incentive-Based Compensation arising from a restatement. 5 2 1. Introduction

March 28, 2024 EX-13.2

CERTIFICATION PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 (SUBSECTIONS (A) AND (B) OF SECTION 1350, CHAPTER 63 OF TITLE 18, UNITED STATES CODE)

Exhibit 13.2 CERTIFICATION PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 (SUBSECTIONS (A) AND (B) OF SECTION 1350, CHAPTER 63 OF TITLE 18, UNITED STATES CODE) Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 (Subsections (a) and (b) of Section 1350, Chapter 63 of Title 18, United States Code), the undersigned officer of Tenaris S.A. (the “Company”), hereby certifies, to such o

March 28, 2024 EX-12.1

CERTIFICATE

Exhibit 12.1 CERTIFICATE I, PAOLO ROCCA, CERTIFY THAT: 1. I have reviewed this annual report on Form 20-F of Tenaris S.A.; 2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period

March 28, 2024 20-F

EXHIBITIS

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 20-F (Mark One) ☐ Registration statement pursuant to Section 12(b) or 12(g) of the Securities Exchange Act of 1934 or ☒ Annual report pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 for the fiscal year ended December 31, 2023 or ☐ Transition report pursuant to Section 13 or 15(d) of the Securities E

March 28, 2024 EX-15.2

For the year ended December 31,

Exhibit 15.2 Alternative performance measures EBITDA, Earnings before interest, tax, depreciation and amortization EBITDA provides an analysis of the operating results excluding depreciation and amortization and impairments, as they are non-cash variables which can vary substantially from company to company depending on accounting policies and the accounting value of the assets. EBITDA is an appro

March 27, 2024 6-K

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

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 22, 2024 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 fi

March 27, 2024 6-K

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

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 25, 2024 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 fi

March 27, 2024 6-K

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

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 22, 2024 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 fi

March 27, 2024 EX-99.1

EX-99.1

Annual Report 2023 TENARIS S.A. 26, Boulevard Royal - 4 th Floor L-2449 - Luxembourg R.C.S. Luxembourg: B 85203Annual Report 2023 2 TABLE OF CONTENTS LETTER FROM THE CHAIRMAN 4 CERTAIN DEFINED TERMS 6 PRESENTATION OF CERTAIN FINANCIAL AND OTHER INFORMATION 7 CAUTIONARY STATEMENT CONCERNING FORWARD-LOOKING STATEMENTS 8 CONSOLIDATED MANAGEMENT REPORT 9 Key Information 9 Risk Factors 9 Information on

March 25, 2024 6-K

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

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 22, 2024 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 fi

March 25, 2024 6-K

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

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 22, 2024 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 fi

March 18, 2024 6-K

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

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 15, 2024 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 fi

March 11, 2024 6-K

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

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 8, 2024 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 fil

March 4, 2024 6-K

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

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 1, 2024 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 fil

February 26, 2024 6-K

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

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 February 22nd, 2024 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 registra

February 26, 2024 6-K

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

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 February 25th, 2024 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 registra

February 23, 2024 6-K

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

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 February 21st, 2024 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 registra

February 23, 2024 6-K

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

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 February 21st, 2024 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

January 22, 2024 SC 13D/A

TS / Tenaris S.A. - Depositary Receipt (Common Stock) / SAN FAUSTIN S.A. - AMENDMENT NO.6 TO SCHEDULE 13D Activist Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 13D Under the Securities Exchange Act of 1934 (Amendment No. 6)* Tenaris S.A. (Name of Issuer) Ordinary Shares, $1.00 par value per share (Title of Class of Securities) 88031 M 10 9 (CUSIP Number) Fernando J. Mantilla 26, Boulevard Royal, Ground Floor, L-2449 Luxembourg, Grand-Duchy of Luxembourg Telephone: +352 27209

January 12, 2024 6-K

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

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 January 12, 2024 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

January 8, 2024 6-K

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

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 January 5, 2024 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 f

December 15, 2023 6-K

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

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 December 15th, 2023 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 registra

December 8, 2023 6-K

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

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 December 8th, 2023 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 registran

December 4, 2023 6-K

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

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 December 1st, 2023 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 registran

December 1, 2023 6-K

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

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 30th, 2023 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 registra

November 27, 2023 6-K

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

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 24th, 2023 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 registra

November 20, 2023 6-K

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

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 17th, 2023 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 registra

November 14, 2023 6-K

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

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 13th, 2023 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 registra

November 6, 2023 6-K

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

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 5th, 2023 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 registran

November 6, 2023 6-K

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

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 2nd, 2023 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 registran

November 3, 2023 SC 13D/A

TS / Tenaris S.A. - ADR / SAN FAUSTIN S.A. - FORM SC 13D/A Activist Investment

SC 13D/A 1 sc13da110223.htm FORM SC 13D/A UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 13D Under the Securities Exchange Act of 1934 (Amendment No. 5)* Tenaris S.A. (Name of Issuer) Ordinary Shares, $1.00 par value per share (Title of Class of Securities) 88031 M 10 9 (CUSIP Number) Fernando J. Mantilla, 26, Boulevard Royal, Ground Floor, L-2449 Luxembourg, Gran

November 3, 2023 6-K

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

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 1st, 2023 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 registran

November 2, 2023 6-K

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

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 1st, 2023 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 registran

October 24, 2023 6-K

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

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 October 23, 2023 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

August 15, 2023 6-K

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

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 August 14, 2023 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 f

August 7, 2023 6-K

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

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 3 August, 2023 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 fi

August 4, 2023 6-K

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

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 2 August, 2023 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 fi

August 4, 2023 6-K

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

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 2 August, 2023 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 fi

August 3, 2023 6-K

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

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 2 August, 2023 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 fi

July 5, 2023 6-K

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

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 July 3, 2023 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 file

May 24, 2023 SD

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD SPECIALIZED DISCLOSURE REPORT TENARIS S.A. (Exact name of Registrant as specified in its charter) (Translation of Registrant’s name into English) Grand Duchy of Luxembour

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD SPECIALIZED DISCLOSURE REPORT TENARIS S.A. (Exact name of Registrant as specified in its charter) N/A (Translation of Registrant’s name into English) Grand Duchy of Luxembourg (Jurisdiction of incorporation or organization) 001-31518 (Commission File Number) N/A (IRS Employer Identification No.) 26, Boulevard Royal, 4t

May 4, 2023 6-K

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

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 May 3, 2023 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

May 4, 2023 6-K

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

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 May 3, 2023 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

May 1, 2023 6-K

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

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 27 April, 2023 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 fi

April 27, 2023 6-K

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

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 26 April, 2023 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 fi

April 27, 2023 6-K

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

6-K 1 f6k042623.htm FORM 6-K 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 26 April, 2023 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 m

April 6, 2023 6-K

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

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 31 March, 2023 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 fi

April 5, 2023 6-K

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

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 3 April, 2023 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 fil

April 5, 2023 6-K

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

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 31 March, 2023 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 fi

April 3, 2023 6-K

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

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 31 March, 2023 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 fi

March 31, 2023 20-F

Operating and Financial Review and Prospects

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 20-F (Mark One) ☐ Registration statement pursuant to Section 12(b) or 12(g) of the Securities Exchange Act of 1934 or ☒ Annual report pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 for the fiscal year ended December 31, 2022 or ☐ Transition report pursuant to Section 13 or 15(d) of the Securities E

March 31, 2023 EX-2.2

Description of Securities

Exhibit 2.2 Description of securities The shares of Tenaris S.A. (the “Company”) are listed on the Mexican Stock Exchange and its ADSs are listed on the NYSE under the symbol “TS”. The shares are also listed on the Italian Stock Exchange under the symbol “TEN”. Trading on the NYSE and the Mexican Stock Exchange began on December 16, 2002, and trading on the Italian Stock Exchange began on December

March 31, 2023 EX-15.1

Statement Explaining Calculation of Ratios

Exhibit 15.1 Ratios Liquid financial assets over total assets At December 31, Thousands of U.S. dollars 2022 2021 2020 Cash and cash equivalents 1,091,527 318,127 584,681 Other current investments 438,448 397,849 872,488 Bonds and other fixed income 113,574 312,619 239,422 Liquid financial assets 1,643,549 1,028,595 1,696,591 Total assets 17,550,246 14,449,431 13,716,189 Ratio 0.09 0.07 0.12 Total

March 31, 2023 EX-13.2

Certification of Chief Financial Officer pursuant to Section 906 of the Sarbanes-Oxley Act of 2002

Exhibit 13.2 CERTIFICATION PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 (SUBSECTIONS (A) AND (B) OF SECTION 1350, CHAPTER 63 OF TITLE 18, UNITED STATES CODE) Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 (Subsections (a) and (b) of Section 1350, Chapter 63 of Title 18, United States Code), the undersigned officer of Tenaris S.A. (the “Company”), hereby certifies, to such o

March 31, 2023 EX-13.1

Certification of Chief Executive Officer pursuant to Section 906 of the Sarbanes-Oxley Act of 2002

Exhibit 13.1 CERTIFICATION PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 (SUBSECTIONS (A) AND (B) OF SECTION 1350, CHAPTER 63 OF TITLE 18, UNITED STATES CODE) Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 (Subsections (a) and (b) of Section 1350, Chapter 63 of Title 18, United States Code), the undersigned officer of Tenaris S.A. (the “Company”), hereby certifies, to such o

March 31, 2023 EX-12.2

Certification of Chief Financial Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002

Exhibit 12.2 CERTIFICATE I, ALICIA MÓNDOLO, CERTIFY THAT: 1. I have reviewed this annual report on Form 20-F of Tenaris S.A.; 2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the per

March 31, 2023 EX-15.2

Statement Explaining Alternative Performance Measures

Exhibit 15.2 Alternative performance measures EBITDA, Earnings before interest, tax, depreciation and amortization EBITDA provides an analysis of the operating results excluding depreciation and amortization and impairments, as they are non-cash variables which can vary substantially from company to company depending on accounting policies and the accounting value of the assets. EBITDA is an appro

March 31, 2023 EX-12.1

Certification of Chief Executive Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002

Exhibit 12.1 CERTIFICATE I, PAOLO ROCCA, CERTIFY THAT: 1. I have reviewed this annual report on Form 20-F of Tenaris S.A.; 2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period

March 30, 2023 6-K

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

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 30 March, 2023 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 fi

February 21, 2023 6-K

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

6-K 1 f6k022023.htm FORM 6-K 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 16 February, 2023 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 chec

February 17, 2023 6-K

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

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 February 15, 2023 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

February 16, 2023 6-K

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

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 15 February, 2023 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

February 6, 2023 6-K

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

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 5 February, 2023 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

November 28, 2022 6-K

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

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 28 November, 2022 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

November 7, 2022 6-K

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

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 4, 2022 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

November 7, 2022 6-K

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

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 3 November, 2022 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

November 4, 2022 6-K

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

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 3 November, 2022 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

October 4, 2022 6-K

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

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, 2022 TENARIS, S.A. (Translation of Registrant's name into English) TENARIS, S.A. 26, Boulevard Royal, 4th floor L-2449 Luxembourg (Address of principal executive offices) Indicate by check mark whether

August 8, 2022 6-K

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

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 August 4, 2022 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 fi

August 5, 2022 6-K

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

6-K 1 f6k080422.htm 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 3 August, 2022 TENARIS, S.A. (Translation of Registrant's name into English) TENARIS, S.A. 26, Boulevard Royal, 4th floor L-2449 Luxembourg (Address of principal executive offices) Indicate by ch

August 5, 2022 6-K

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

6-K 1 f6k080322fs.htm FORM 6-K 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 3 August, 2022 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

August 4, 2022 6-K

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

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 3 August, 2022 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 fi

July 8, 2022 6-K

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

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 July 7, 2022 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 file

June 13, 2022 6-K

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

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 13 June, 2022 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 fil

June 3, 2022 6-K

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

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 June 2, 2022 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 file

May 27, 2022 6-K

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

6-K 1 f6k052622.htm FORM 6-K 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 May 26, 2022 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 mar

May 26, 2022 SD

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD SPECIALIZED DISCLOSURE REPORT TENARIS S.A. (Exact name of Registrant as specified in its charter) (Translation of Registrant’s name into English) Grand Duchy of Luxembour

SD 1 fsd052622.htm FORM SD UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD SPECIALIZED DISCLOSURE REPORT TENARIS S.A. (Exact name of Registrant as specified in its charter) N/A (Translation of Registrant’s name into English) Grand Duchy of Luxembourg (Jurisdiction of incorporation or organization) 001-31518 (Commission File Number) N/A (IRS Employer Identification N

May 4, 2022 6-K

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

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 May 4, 2022 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

May 4, 2022 6-K

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

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 May 3, 2022 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

May 2, 2022 6-K

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

6-K 1 f6k050222.htm FORM 6-K 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 April 28, 2022 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 m

April 29, 2022 6-K

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

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 27 April, 2022 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 fi

April 28, 2022 6-K

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

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 27 April, 2022 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 fi

April 5, 2022 6-K

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

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 1 April, 2022 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 fil

April 4, 2022 6-K

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

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 31 March, 2022 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 fi

April 4, 2022 6-K

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

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 30 March, 2022 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 fi

March 31, 2022 20-F

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 20-F

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 20-F (Mark One) ? Registration statement pursuant to Section 12(b) or 12(g) of the Securities Exchange Act of 1934 or ? Annual report pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 for the fiscal year ended December 31, 2021 or ? Transition report pursuant to Section 13 or 15(d) of the Securities E

March 31, 2022 EX-12.1

Certification of Chief Executive Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002

Exhibit 12.1 CERTIFICATE I, PAOLO ROCCA, CERTIFY THAT: 1. I have reviewed this annual report on Form 20-F of Tenaris S.A.; 2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period

March 31, 2022 EX-7.1

Statement Explaining Calculation of Ratios

Exhibit 7.1 Tenaris ? Liquid financial assets over total assets At December 31, Thousands of U.S. dollars 2021 2020 2019 Cash and cash equivalents 318,127 584,681 1,554,299 Other current investments 397,849 872,488 210,376 Bonds and other fixed income 312,619 239,422 18,012 Liquid financial assets 1,028,595 1,696,591 1,782,687 Total assets 14,449,431 13,716,189 14,842,991 Ratio 7% 12% 12% Tenaris

March 31, 2022 EX-13.2

Certification of Chief Financial Officer pursuant to Section 906 of the Sarbanes-Oxley Act of 2002

Exhibit 13.2 CERTIFICATION PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 (SUBSECTIONS (A) AND (B) OF SECTION 1350, CHAPTER 63 OF TITLE 18, UNITED STATES CODE) Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 (Subsections (a) and (b) of Section 1350, Chapter 63 of Title 18, United States Code), the undersigned officer of Tenaris S.A. (the “Company”), hereby certifies, to such o

March 31, 2022 6-K

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

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 31 March, 2022 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 fi

March 31, 2022 EX-7.2

Statement Explaining Alternative Performance Measures

Alternative performance measures EBITDA, Earnings before interest, tax, depreciation and amortization.

March 31, 2022 EX-12.2

Certification of Chief Financial Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002

Exhibit 12.2 CERTIFICATE I, ALICIA MÓNDOLO, CERTIFY THAT: 1. I have reviewed this annual report on Form 20-F of Tenaris S.A.; 2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the per

March 31, 2022 EX-13.1

Certification of Chief Executive Officer pursuant to Section 906 of the Sarbanes-Oxley Act of 2002

Exhibit 13.1 CERTIFICATION PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 (SUBSECTIONS (A) AND (B) OF SECTION 1350, CHAPTER 63 OF TITLE 18, UNITED STATES CODE) Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 (Subsections (a) and (b) of Section 1350, Chapter 63 of Title 18, United States Code), the undersigned officer of Tenaris S.A. (the “Company”), hereby certifies, to such o

February 22, 2022 6-K

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

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 17 February, 2022 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

February 18, 2022 6-K

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

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 February 16, 2022 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

February 17, 2022 6-K

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

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 16 February, 2022 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

November 5, 2021 6-K

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

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 4, 2021 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

November 5, 2021 6-K

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

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 3, 2021 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

November 4, 2021 6-K

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

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 3 November, 2021 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

August 17, 2021 6-K

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

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 17 August, 2021 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 f

August 9, 2021 6-K

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

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 August 5, 2021 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 fi

August 6, 2021 6-K

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

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 4 August, 2021 TENARIS, S.A. (Translation of Registrant's name into English) TENARIS, S.A. 26, Boulevard Royal, 4th floor L-2449 Luxembourg (Address of principal executive offices) Indicate by check mark whether the

August 6, 2021 6-K

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

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 4 August, 2021 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 fi

August 5, 2021 6-K

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

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 4 August, 2021 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 fi

June 28, 2021 SC 13D/A

TS / Tenaris S.A. / SAN FAUSTIN S.A. - AMENDMENT NO. 4 TO SCHEDULE 13D Activist Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 13D Under the Securities Exchange Act of 1934 (Amendment No. 4)* Tenaris S.A. (Name of Issuer) Ordinary Shares, $1.00 par value per share (Title of Class of Securities) 88031 M 10 9 (CUSIP Number) Fernando J. Mantilla, 26, Boulevard Royal, Ground Floor, L-2449 Luxembourg, Grand-Duchy of Luxembourg Telephone: +352 2720

May 20, 2021 SD

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD SPECIALIZED DISCLOSURE REPORT TENARIS S.A. (Exact name of Registrant as specified in its charter) (Translation of Registrant’s name into English) Grand Duchy of Luxembour

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD SPECIALIZED DISCLOSURE REPORT TENARIS S.A. (Exact name of Registrant as specified in its charter) N/A (Translation of Registrant?s name into English) Grand Duchy of Luxembourg (Jurisdiction of incorporation or organization) 001-31518 (Commission File Number) N/A (IRS Employer Identification No.) 26, Boulevard Royal, 4t

May 4, 2021 6-K

Current Report of Foreign Issuer - FORM 6-K

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 May 3, 2021 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

May 4, 2021 6-K

Current Report of Foreign Issuer -

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 May 3, 2021 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

May 3, 2021 6-K

Current Report of Foreign Issuer - FORM 6-K

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 April 29, 2021 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 fi

April 30, 2021 6-K

Current Report of Foreign Issuer - FORM 6-K

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 28 April, 2021 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 fi

April 30, 2021 6-K

Current Report of Foreign Issuer - FORM 6-K

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 28 April, 2021 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 fi

April 2, 2021 6-K

Current Report of Foreign Issuer - FORM 6-K

6-K 1 f6k033121.htm FORM 6-K 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 29 March, 2021 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 m

April 1, 2021 6-K

Current Report of Foreign Issuer - FORM 6-K

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 30 March, 2021 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 fi

March 31, 2021 6-K

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

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 29 March, 2021 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 fi

March 30, 2021 EX-1.1

Updated and Consolidated Articles of Association of Tenaris S.A., dated as of June 2, 2020

. . . . . . . . . . . . . . . . . . . . .

March 30, 2021 EX-12.1

Certification of Chief Executive Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002

Exhibit 12.1 CERTIFICATE I, PAOLO ROCCA, CERTIFY THAT: 1. I have reviewed this annual report on Form 20-F of Tenaris S.A.; 2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period

March 30, 2021 EX-7.2

Statement Explaining Alternative Performance Measures

Exhibit 7.2 Alternative performance measures EBITDA, Earnings before interest, tax, depreciation and amortization. EBITDA provides an analysis of the operating results excluding depreciation and amortization and impairments, as they are non-cash variables which can vary substantially from company to company depending on accounting policies and the accounting value of the assets. EBITDA is an appro

March 30, 2021 20-F

- FORM 20-F

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 20-F (Mark One) ? Registration statement pursuant to Section 12(b) or 12(g) of the Securities Exchange Act of 1934 or ? Annual report pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 for the fiscal year ended December 31, 2020 or ? Transition report pursuant to Section 13 or 15(d) of the Securities E

March 30, 2021 EX-13.2

Certification of Chief Financial Officer pursuant to Section 906 of the Sarbanes-Oxley Act of 2002

Exhibit 13.2 CERTIFICATION PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 (SUBSECTIONS (A) AND (B) OF SECTION 1350, CHAPTER 63 OF TITLE 18, UNITED STATES CODE) Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 (Subsections (a) and (b) of Section 1350, Chapter 63 of Title 18, United States Code), the undersigned officer of Tenaris S.A. (the ?Company?), hereby certifies, to such o

March 30, 2021 EX-13.1

Certification of Chief Executive Officer pursuant to Section 906 of the Sarbanes-Oxley Act of 2002

Exhibit 13.1 CERTIFICATION PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 (SUBSECTIONS (A) AND (B) OF SECTION 1350, CHAPTER 63 OF TITLE 18, UNITED STATES CODE) Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 (Subsections (a) and (b) of Section 1350, Chapter 63 of Title 18, United States Code), the undersigned officer of Tenaris S.A. (the ?Company?), hereby certifies, to such o

March 30, 2021 EX-12.2

Certification of Chief Financial Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002

Exhibit 12.2 CERTIFICATE I, ALICIA M?NDOLO, CERTIFY THAT: 1. I have reviewed this annual report on Form 20-F of Tenaris S.A.; 2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the per

March 30, 2021 EX-7.1

Statement Explaining Calculation of Ratios

Exhibit 7.1 Tenaris ? Liquid financial assets over total assets At December 31, Thousands of U.S. dollars 2020 2019 2018 Cash and cash equivalents 584,681 1,554,299 428,361 Other current investments 872,488 210,376 487,734 Bonds and other fixed income 239,422 18,012 113,829 Liquid financial assets 1,696,591 1,782,687 1,029,924 Total assets 13,716,189 14,842,991 14,251,299 Ratio 12% 12% 7% Tenaris

March 30, 2021 6-K

Current Report of Foreign Issuer - FORM 6-K

6-K 1 f6k033021.htm FORM 6-K 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 29 March, 2021 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 m

March 1, 2021 6-K

Current Report of Foreign Issuer - FORM 6-K

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 25 February, 2021 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

February 26, 2021 6-K

Current Report of Foreign Issuer - FORM 6-K

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 24 February, 2021 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

February 25, 2021 6-K

Current Report of Foreign Issuer - FORM 6-K

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 24 February, 2021 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

November 9, 2020 6-K

Current Report of Foreign Issuer - FORM 6-K

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 5 November, 2020 TENARIS, S.A. (Translation of Registrant's name into English) TENARIS, S.A. 26, Boulevard Royal, 4th floor L-2449 Luxembourg (Address of principal executive offices) Indicate by check mark whether t

November 6, 2020 6-K

Current Report of Foreign Issuer - FORM 6-K

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 4 November, 2020 TENARIS, S.A. (Translation of Registrant's name into English) TENARIS, S.A. 26, Boulevard Royal, 4th floor L-2449 Luxembourg (Address of principal executive offices) Indicate by check mark whether t

November 5, 2020 6-K

Current Report of Foreign Issuer - FORM 6-K

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 4 November, 2020 TENARIS, S.A. (Translation of Registrant's name into English) TENARIS, S.A. 26, Boulevard Royal, 4th floor L-2449 Luxembourg (Address of principal executive offices) Indicate by check mark whether t

August 10, 2020 6-K

Current Report of Foreign Issuer - FORM 6-K

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 6 August, 2020 TENARIS, S.A. (Translation of Registrant's name into English) TENARIS, S.A. 26, Boulevard Royal, 4th floor L-2449 Luxembourg (Address of principal executive offices) Indicate by check mark whether the

August 7, 2020 6-K

Current Report of Foreign Issuer - FORM 6-K

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 5 August, 2020 TENARIS, S.A. (Translation of Registrant's name into English) TENARIS, S.A. 26, Boulevard Royal, 4th floor L-2449 Luxembourg (Address of principal executive offices) Indicate by check mark whether the

August 7, 2020 6-K

Current Report of Foreign Issuer - FORM 6-K

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 5 August, 2020 TENARIS, S.A. (Translation of Registrant's name into English) TENARIS, S.A. 26, Boulevard Royal, 4th floor L-2449 Luxembourg (Address of principal executive offices) Indicate by check mark whether the

August 6, 2020 6-K

Current Report of Foreign Issuer - FORM 6-K

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 5 August, 2020 TENARIS, S.A. (Translation of Registrant's name into English) TENARIS, S.A. 26, Boulevard Royal, 4th floor L-2449 Luxembourg (Address of principal executive offices) Indicate by check mark whether the

June 25, 2020 SC 13D/A

TS / Tenaris S.A. / SAN FAUSTIN S.A. - AMENDMENT NO. 3 TO SCHEDULE 13D Activist Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 13D Under the Securities Exchange Act of 1934 (Amendment No. 3)* Tenaris S.A. (Name of Issuer) Ordinary Shares, $1.00 par value per share (Title of Class of Securities) 88031 M 10 9 (CUSIP Number) Fernando J. Mantilla, 26, Boulevard Royal, Ground Floor, L-2449 Luxembourg, Grand-Duchy of Luxembourg Telephone: +352 2720

June 3, 2020 6-K

Current Report of Foreign Issuer - FORM 6-K

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 3 June, 2020 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 file

June 3, 2020 6-K

Current Report of Foreign Issuer - FORM 6-K

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 3 June, 2020 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 file

June 3, 2020 6-K

Current Report of Foreign Issuer - FORM 6-K

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 3 June, 2020 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 file

May 29, 2020 SD

- FORM SD

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD SPECIALIZED DISCLOSURE REPORT TENARIS S.A. (Exact name of Registrant as specified in its charter) N/A (Translation of Registrant’s name into English) Grand Duchy of Luxembourg (Jurisdiction of incorporation or organization) 001-31518 (Commission File Number) N/A (IRS Employer Identification No.) 26, Boulevard Royal, 4t

May 4, 2020 6-K

Current Report of Foreign Issuer - FORM 6-K

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 30 April, 2020 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 fi

May 4, 2020 6-K

Current Report of Foreign Issuer -

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 30 April, 2020 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 fi

May 4, 2020 6-K

Current Report of Foreign Issuer - FORM 6-K

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 30 April, 2020 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 fi

May 4, 2020 6-K

Current Report of Foreign Issuer - FORM 6-K

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 30 April, 2020 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 fi

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