San Faustin S.A. Amends Tenaris S.A. 13D Filing

TL;DR

San Faustin S.A. updated its 13D for Tenaris S.A., adding new group members.

AI Summary

San Faustin S.A. filed an amendment (No. 7) to its Schedule 13D on June 4, 2024, regarding its holdings in Tenaris S.A. The filing indicates a change in the group members, with Rocca & Partners Stichting Administratiekantoor Aandelen San Faustin and Techint Holdings S.A R.L. now listed as group members. San Faustin S.A. is the filer, and its former name was San Faustin N.V., with a name change on March 12, 2008.

Why It Matters

This amendment signals potential shifts in the control or influence structure of Tenaris S.A. by updating its significant beneficial ownership group.

Risk Assessment

Risk Level: medium — Amendments to Schedule 13D filings can indicate changes in significant shareholder intentions or group structures, potentially impacting stock price.

Key Players & Entities

• San Faustin S.A. (company) — Filer of the Schedule 13D/A
• Tenaris S.A. (company) — Subject company of the filing
• Rocca & Partners Stichting Administratiekantoor Aandelen San Faustin (company) — Newly listed group member
• Techint Holdings S.A R.L. (company) — Newly listed group member
• Fernando J. Mantilla (person) — Contact person for the filing

FAQ

Key Financial Figures

• $1.00 — .A. (Name of Issuer) Ordinary Shares, $1.00 par value per share (Title of Class of
• $1 — ating to the Ordinary Shares, par value $1 per share of Tenaris S.A. (the “O

Filing Documents

• ea0207310-13da7san_tenaris.htm (SC 13D/A) — 65KB
• 0001213900-24-049528.txt ( ) — 66KB

Identity and Background

Item 2. Identity and Background This Schedule 13D is being jointly filed by each of the following persons pursuant to Rule 13d-1(k) (collectively, the “Reporting Persons”). (a) ROCCA & PARTNERS STICHTING ADMINISTRATIEKANTOOR AANDELEN SAN FAUSTIN (“RP STAK”) Fascinatio Boulevard 764, 2909 VA Capelle aan den IJssel, The Netherlands. RP STAK is a private foundation ( stichting ) organized under the laws of The Netherlands. No person or group of persons controls RP STAK. (b) SAN FAUSTIN S.A. (“SAN FAUSTIN”) 26, Boulevard Royal, Ground Floor, L-2449 Luxembourg. SAN FAUSTIN is a société anonyme (public limited liability company) organized under the laws of the Grand-Duchy of Luxembourg. RP STAK continues to control SAN FAUSTIN (i.e. it continues to have the ability to influence matters affecting, or submitted to a vote of the shareholders of SAN FAUSTIN, including the election of directors and the approval of certain corporate transactions and other matters concerning SAN FAUSTIN’s policies). (c) TECHINT HOLDINGS S.À R.L. (“TECHINT HOLDINGS”) 26, Boulevard Royal, Ground Floor, L-2449 Luxembourg. TECHINT HOLDINGS is a société à responsabilité limitée (private limited liability company) organized under the laws of the Grand-Duchy of Luxembourg. All of the shares of TECHINT HOLDINGS are held by SAN FAUSTIN. The name, residence or business address, present principal occupation or employment (and the name, principal business and address of any corporation or other organization in which such employment is conducted) and citizenship of each voting committee member, executive officer or director, as applicable, of each Reporting Person are set forth in Schedule I to the Amendment No. 6 to the Schedule 13D of Tenaris S.A., dated January 22, 2024, and incorporated into this Item 2 by reference. During the last five years, none of the Reporting Persons, nor,

Interest in Securities of the Issuer

Item 5. Interest in Securities of the Issuer (a) (b) RP STAK. See items (7) through (11) and (13) on page 2 SAN FAUSTIN. See items (7) through (11) and (13) on page 3 TECHINT HOLDINGS. See items (7) through (11) and (13) on page 4 (c) There have been no transactions in Ordinary Shares effected by the Reporting Persons or, to the best of the Reporting Person’s knowledge, any person or entity identified on Schedule I to the Amendment No. 6 to the Schedule 13D of Tenaris S.A., dated January 22, 2024, during the last 60 days. (d) Not applicable. (e) Not applicable.

Material to Be Filed as Exhibits

Item 7. Material to Be Filed as Exhibits Exhibit Description A Power of Attorney of ROCCA & PARTNERS STICHTING ADMINISTRATIEKANTOOR AANDELEN SAN FAUSTIN dated October 31 st , 2023.*** B Power of Attorney of SAN FAUSTIN S.A., dated September 28 th , 2023.*** C Power of Attorney of TECHINT HOLDINGS S.à r.l., dated September 28 th , 2023.*** *** Previously filed as an exhibit to the Schedule 13D of Tenaris S.A. dated November 2 nd , 2023 and incorporated by reference in this Amendment No. 7. Page 6 of 9 SIGNATURE After reasonable inquiry and to the best of my knowledge and belief, I, Fernando J. Mantilla, attorney duly authorized by ROCCA & PARTNERS STICHTING ADMINISTRATIEKANTOOR AANDELEN SAN FAUSTIN to sign this statement, certify that the information set forth in this statement is true, complete and correct. Pursuant to Rule 13d-1(k)(1), the undersigned joins in the filing of this Amendment No. 7 on his own behalf and on behalf of SAN FAUSTIN S.A. and TECHINT HOLDINGS S.À R.L. June 4, 2024 /s/ Fernando J. Mantilla Attorney-in-fact Page 7 of 9 SIGNATURE After reasonable inquiry and to the best of my knowledge and belief, I, Fernando J. Mantilla, attorney duly authorized by SAN FAUSTIN S.A. to sign this statement, certify that the information set forth in this statement is true, complete and correct. Pursuant to Rule 13d - 1(k)(1), the undersigned joins in the filing of this Amendment No. 7 on his own behalf and on behalf of ROCCA & PARTNERS STICHTING ADMINISTRATIEKANTOOR AANDELEN SAN FAUSTIN and TECHINT HOLDINGS S.À R.L. June 4, 2024 /s/ Fernando J. Mantilla Attorney-in-fact Page 8 of 9 SIGNATURE After reasonable inquiry and to the best of my knowledge and belief, I, Fernando J. Mantilla, attorney duly authorized by TECHINT HOLDINGS S.À R.L. to sign this statement, certify that the information set forth in this statement is true, complete and correct. Pursuant to Rule 13d-1(k)(1), the undersigned

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