<SEC-DOCUMENT>0001213900-21-034419.txt : 20210628
<SEC-HEADER>0001213900-21-034419.hdr.sgml : 20210628
<ACCEPTANCE-DATETIME>20210628151713
ACCESSION NUMBER:		0001213900-21-034419
CONFORMED SUBMISSION TYPE:	SC 13D/A
PUBLIC DOCUMENT COUNT:		1
FILED AS OF DATE:		20210628
DATE AS OF CHANGE:		20210628
GROUP MEMBERS:		ROCCA & PARTNERS STICHTING ADMINISTRATIEKANTOOR AANDELEN SAN FAUSTIN
GROUP MEMBERS:		SAN FAUSTIN S.A.
GROUP MEMBERS:		TECHINT HOLDINGS S.A R.L.

SUBJECT COMPANY:	

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			TENARIS SA
		CENTRAL INDEX KEY:			0001190723
		STANDARD INDUSTRIAL CLASSIFICATION:	STEEL WORKS, BLAST FURNACES  ROLLING MILLS (COKE OVENS) [3312]
		IRS NUMBER:				000000000

	FILING VALUES:
		FORM TYPE:		SC 13D/A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	005-78699
		FILM NUMBER:		211052919

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

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

FILED BY:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			SAN FAUSTIN S.A.
		CENTRAL INDEX KEY:			0001429586
		IRS NUMBER:				000000000
		STATE OF INCORPORATION:			N4
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		SC 13D/A

	BUSINESS ADDRESS:	
		STREET 1:		26, BOULEVARD ROYAL, GROUND FLOOR
		CITY:			LUXEMBOURG
		STATE:			N4
		ZIP:			L-2449
		BUSINESS PHONE:		(352) 2720-9600

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

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	San Faustin N.V.
		DATE OF NAME CHANGE:	20080312
</SEC-HEADER>
<DOCUMENT>
<TYPE>SC 13D/A
<SEQUENCE>1
<FILENAME>ea143327-13da4rocca_tenaris.htm
<DESCRIPTION>AMENDMENT NO. 4 TO SCHEDULE 13D
<TEXT>
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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0"></P>

<!-- Field: Rule-Page --><DIV STYLE="margin-top: 0; margin-bottom: 0; width: 100%"><DIV STYLE="font-size: 1pt; border-top: Black 2pt solid; border-bottom: Black 1pt solid">&nbsp;</DIV></DIV><!-- Field: /Rule-Page -->

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">&nbsp;</FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: center"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt"><B>UNITED
STATES</B></FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: center"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">&nbsp;<B>SECURITIES
AND EXCHANGE COMMISSION</B></FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: center"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">&nbsp;<B>WASHINGTON,
D.C. 20549</B></FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: center"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">&nbsp;</FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: center"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt"><B>SCHEDULE
13D</B></FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: center"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">&nbsp;<B>Under
the Securities Exchange Act of 1934</B></FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: center"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">&nbsp;<B>(Amendment
No. 4)*</B></FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: center"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">&nbsp;</FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: center"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">Tenaris S.A.</FONT></P>

<!-- Field: Rule-Page --><DIV STYLE="margin-top: 0; margin-bottom: 0; width: 100%"><DIV STYLE="font-size: 1pt; border-top: Black 1.5pt solid">&nbsp;</DIV></DIV><!-- Field: /Rule-Page -->

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: center"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">(Name
of Issuer)</FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: center"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">&nbsp;&nbsp;</FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: center"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">Ordinary
Shares, $1.00 par value per share</FONT></P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: center"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">(Title
of Class of Securities)</FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: center"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">&nbsp;</FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0; text-align: center"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">88031 M 10 9</FONT></P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0; text-align: center"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">(CUSIP&nbsp;Number)</FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: center"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">&nbsp;&nbsp;</FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: center"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">Fernando
J. Mantilla, 26, Boulevard Royal, Ground Floor, L-2449 Luxembourg, Grand-Duchy of Luxembourg</FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: center"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">&nbsp;Telephone:
+352 27209600</FONT></P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: center"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">&nbsp;(Name,
Address and Telephone number of Person Authorized to</FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: center"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">&nbsp;Receive
Notices and Communications)</FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: center"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">&nbsp;&nbsp;</FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: center">June 28<SUP>th</SUP>, 2021</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: center"><FONT STYLE="font: 10pt Times New Roman, Times, Serif"></FONT></P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: center"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">(Date
of Event Which Requires Filing of this Statement)</FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: center"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">&nbsp;</FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">If
the filing person has previously filed a statement on Schedule 13G to report the acquisition that is the subject of this Schedule
13D, and is filing this schedule because of &sect;&sect;240.13d&ndash;1(e), 240.13d&ndash;1(f) or 240.13d&ndash;1(g), check the
following box. &#9744;</FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">&nbsp;</FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">Note:
Schedules filed in paper format shall include a signed original and five copies of the schedule, including all exhibits. See Rule
13d&ndash;7 for other parties to whom copies are to be sent.</FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">&nbsp;</FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">*The
remainder of this cover page shall be filled out for a reporting person&rsquo;s initial filing on this form with respect to the
subject class of securities, and for any subsequent amendment containing information which would alter disclosures provided in
a prior cover page.</FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">&nbsp;</FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">The
information required on the remainder of this cover page shall not be deemed to be &ldquo;filed&rdquo; for the purpose of section
18 of the Securities Exchange Act of 1934 (&ldquo;Act&rdquo;) or otherwise subject to the liabilities of that section of the Act
but shall be subject to all other provisions of the Act (however, see the Notes).</FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"></P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify">&nbsp;&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"></P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 10pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse">
<TR STYLE="vertical-align: top">
    <TD STYLE="width: 25%; border-top: Black 1.5pt solid; border-bottom: Black 1.5pt solid; font-size: 10pt; padding-top: 3pt; padding-bottom: 3pt"><FONT STYLE="font-family: Times New Roman, Times, Serif">CUSIP
NO. 88031 M 10 9</FONT></TD>
    <TD STYLE="width: 75%; font-size: 10pt">&nbsp;</TD></TR>
</TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 10pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse">
<TR STYLE="vertical-align: top">
    <TD STYLE="width: 7%; border-top: Black 1.5pt solid"><FONT STYLE="font-family: Times New Roman, Times, Serif">1.</FONT></TD>
    <TD STYLE="width: 93%; border-top: Black 1.5pt solid"><FONT STYLE="font-family: Times New Roman, Times, Serif">NAMES OF REPORTING PERSONS</FONT></TD></TR>
<TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD><FONT STYLE="font-family: Times New Roman, Times, Serif">ROCCA &amp; PARTNERS STICHTING ADMINISTRATIEKANTOOR AANDELEN SAN FAUSTIN</FONT></TD></TR>
<TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD><FONT STYLE="font-family: Times New Roman, Times, Serif">I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)</FONT></TD></TR>
<TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD><FONT STYLE="font-family: Times New Roman, Times, Serif">00-0000000</FONT></TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="border-bottom: Black 1.5pt solid">&nbsp;</TD>
    <TD STYLE="border-bottom: Black 1.5pt solid; text-align: right">&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD><FONT STYLE="font-family: Times New Roman, Times, Serif">2.</FONT></TD>
    <TD><FONT STYLE="font-family: Times New Roman, Times, Serif">CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (SEE INSTRUCTIONS)</FONT></TD></TR>
<TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD STYLE="padding-right: 1in; text-align: right"><FONT STYLE="font-family: Times New Roman, Times, Serif">(a)&nbsp;&nbsp;</FONT><FONT STYLE="font-family: Wingdings">&uml;</FONT></TD></TR>
<TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD STYLE="text-align: right">&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD STYLE="padding-right: 1in; text-align: right"><FONT STYLE="font-family: Times New Roman, Times, Serif">(b)&nbsp;&nbsp;</FONT><FONT STYLE="font-family: Wingdings">&uml;</FONT></TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="border-bottom: Black 1.5pt solid">&nbsp;</TD>
    <TD STYLE="border-bottom: Black 1.5pt solid; text-align: right">&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD><FONT STYLE="font-family: Times New Roman, Times, Serif">3.</FONT></TD>
    <TD><FONT STYLE="font-family: Times New Roman, Times, Serif">SEC USE ONLY</FONT></TD></TR>
<TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="border-bottom: Black 1.5pt solid">&nbsp;</TD>
    <TD STYLE="border-bottom: Black 1.5pt solid; text-align: right">&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD><FONT STYLE="font-family: Times New Roman, Times, Serif">4.</FONT></TD>
    <TD><FONT STYLE="font-family: Times New Roman, Times, Serif">SOURCE OF FUNDS (SEE INSTRUCTIONS): </FONT></TD></TR>
<TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD><FONT STYLE="font-family: Times New Roman, Times, Serif">N/A</FONT></TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="border-bottom: Black 1.5pt solid">&nbsp;</TD>
    <TD STYLE="border-bottom: Black 1.5pt solid; text-align: right">&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD><FONT STYLE="font-family: Times New Roman, Times, Serif">5.</FONT></TD>
    <TD><FONT STYLE="font-family: Times New Roman, Times, Serif">CHECK IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO &nbsp;ITEMS 2(d) OR 2(e):&nbsp;&nbsp;</FONT><FONT STYLE="font-family: Wingdings">&uml;</FONT></TD></TR>
<TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="border-bottom: Black 1.5pt solid">&nbsp;</TD>
    <TD STYLE="border-bottom: Black 1.5pt solid">&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD><FONT STYLE="font-family: Times New Roman, Times, Serif">6.</FONT></TD>
    <TD><FONT STYLE="font-family: Times New Roman, Times, Serif">CITIZENSHIP OR PLACE OF ORGANIZATION</FONT></TD></TR>
<TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD><FONT STYLE="font-family: Times New Roman, Times, Serif">THE NETHERLANDS</FONT></TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="border-bottom: Black 1.5pt solid">&nbsp;</TD>
    <TD STYLE="border-bottom: Black 1.5pt solid">&nbsp;</TD></TR>
</TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"></P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 10pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse">
<TR STYLE="vertical-align: top">
    <TD ROWSPAN="4" STYLE="width: 20%">
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: center">NUMBER OF</P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: center">SHARES</P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: center">BENEFICIALLY</P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: center">OWNED BY</P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: center">EACH</P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: center">REPORTING</P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: center">PERSON</P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: center">WITH:</P></TD>
    <TD STYLE="width: 7%; border-bottom: Black 1.5pt solid"><FONT STYLE="font-family: Times New Roman, Times, Serif">7.</FONT></TD>
    <TD STYLE="width: 73%; border-bottom: Black 1.5pt solid">
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">SOLE VOTING POWER: 0&nbsp;</P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P></TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="border-bottom: Black 1.5pt solid"><FONT STYLE="font-family: Times New Roman, Times, Serif">8.</FONT></TD>
    <TD STYLE="border-bottom: Black 1.5pt solid">
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">SHARED VOTING POWER: 713,605,187&nbsp;</P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P></TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="border-bottom: Black 1.5pt solid"><FONT STYLE="font-family: Times New Roman, Times, Serif">9.</FONT></TD>
    <TD STYLE="border-bottom: Black 1.5pt solid">
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">SOLE DISPOSITIVE POWER: 0&nbsp;</P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P></TD></TR>
<TR STYLE="vertical-align: top">
    <TD><FONT STYLE="font-family: Times New Roman, Times, Serif">10.</FONT></TD>
    <TD>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">SHARED DISPOSITIVE POWER: 713,605,187</P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P></TD></TR>
</TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 10pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse">
<TR STYLE="vertical-align: top">
    <TD STYLE="width: 7%; border-top: Black 1.5pt solid"><FONT STYLE="font-family: Times New Roman, Times, Serif">11.</FONT></TD>
    <TD STYLE="width: 93%; border-top: Black 1.5pt solid"><FONT STYLE="font-family: Times New Roman, Times, Serif">AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON: 713,605,187</FONT></TD></TR>
<TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="border-bottom: Black 1.5pt solid; text-align: right">&nbsp;</TD>
    <TD STYLE="border-bottom: Black 1.5pt solid; text-align: right">&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD><FONT STYLE="font-family: Times New Roman, Times, Serif">12.</FONT></TD>
    <TD><FONT STYLE="font-family: Times New Roman, Times, Serif">CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS)</FONT></TD></TR>
<TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD STYLE="padding-right: 1in; text-align: right"><FONT STYLE="font-family: Wingdings">&uml;</FONT></TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="border-bottom: Black 1.5pt solid; text-align: right">&nbsp;</TD>
    <TD STYLE="border-bottom: Black 1.5pt solid; text-align: right">&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD><FONT STYLE="font-family: Times New Roman, Times, Serif">13.</FONT></TD>
    <TD><FONT STYLE="font-family: Times New Roman, Times, Serif">PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW&nbsp;(11): 60.4%</FONT></TD></TR>
<TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="border-bottom: Black 1.5pt solid">&nbsp;</TD>
    <TD STYLE="border-bottom: Black 1.5pt solid">&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD><FONT STYLE="font-family: Times New Roman, Times, Serif">14.</FONT></TD>
    <TD><FONT STYLE="font-family: Times New Roman, Times, Serif">TYPE OF REPORTING PERSON (SEE INSTRUCTIONS): HC</FONT></TD></TR>
<TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="border-bottom: Black 1.5pt solid">&nbsp;</TD>
    <TD STYLE="border-bottom: Black 1.5pt solid">&nbsp;</TD></TR>
</TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"></P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0"></P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 10pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse">
<TR STYLE="vertical-align: top">
    <TD STYLE="border-top: Black 1.5pt solid; width: 25%; border-bottom: Black 1.5pt solid; padding-top: 3pt; padding-bottom: 3pt"><FONT STYLE="font-family: Times New Roman, Times, Serif">CUSIP NO.<B> </B>88031 M 10 9</FONT></TD>
    <TD STYLE="width: 75%">&nbsp;</TD></TR>
</TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 10pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse">
<TR STYLE="vertical-align: top">
    <TD STYLE="border-top: Black 1.5pt solid; width: 7%"><FONT STYLE="font-family: Times New Roman, Times, Serif">1.</FONT></TD>
    <TD STYLE="border-top: Black 1.5pt solid; width: 93%"><FONT STYLE="font-family: Times New Roman, Times, Serif">NAMES OF REPORTING PERSONS</FONT></TD></TR>
<TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD><FONT STYLE="font-family: Times New Roman, Times, Serif">SAN FAUSTIN S.A.</FONT></TD></TR>
<TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD><FONT STYLE="font-family: Times New Roman, Times, Serif">I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)</FONT></TD></TR>
<TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD><FONT STYLE="font-family: Times New Roman, Times, Serif">00-0000000</FONT></TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="border-bottom: Black 1.5pt solid">&nbsp;</TD>
    <TD STYLE="border-bottom: Black 1.5pt solid; text-align: right">&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD><FONT STYLE="font-family: Times New Roman, Times, Serif">2.</FONT></TD>
    <TD><FONT STYLE="font-family: Times New Roman, Times, Serif">CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (SEE INSTRUCTIONS)</FONT></TD></TR>
<TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD STYLE="padding-right: 1in; text-align: right"><FONT STYLE="font-family: Times New Roman, Times, Serif">(a)&nbsp;&nbsp;</FONT><FONT STYLE="font-family: Wingdings">&uml;</FONT></TD></TR>
<TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD STYLE="padding-right: 1in; text-align: right"><FONT STYLE="font-family: Times New Roman, Times, Serif">(b)&nbsp;&nbsp;</FONT><FONT STYLE="font-family: Wingdings">&uml;</FONT></TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="border-bottom: Black 1.5pt solid">&nbsp;</TD>
    <TD STYLE="border-bottom: Black 1.5pt solid; text-align: right">&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD><FONT STYLE="font-family: Times New Roman, Times, Serif">3.</FONT></TD>
    <TD><FONT STYLE="font-family: Times New Roman, Times, Serif">SEC USE ONLY</FONT></TD></TR>
<TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="border-bottom: Black 1.5pt solid">&nbsp;</TD>
    <TD STYLE="border-bottom: Black 1.5pt solid; text-align: right">&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD><FONT STYLE="font-family: Times New Roman, Times, Serif">4.</FONT></TD>
    <TD><FONT STYLE="font-family: Times New Roman, Times, Serif">SOURCE OF FUNDS (SEE INSTRUCTIONS): </FONT></TD></TR>
<TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD><FONT STYLE="font-family: Times New Roman, Times, Serif">N/A</FONT></TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="border-bottom: Black 1.5pt solid">&nbsp;</TD>
    <TD STYLE="border-bottom: Black 1.5pt solid; text-align: right">&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD><FONT STYLE="font-family: Times New Roman, Times, Serif">5.</FONT></TD>
    <TD><FONT STYLE="font-family: Times New Roman, Times, Serif">CHECK IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO &nbsp;ITEMS 2(d) OR 2(e):&nbsp;&nbsp;</FONT><FONT STYLE="font-family: Wingdings">&uml;</FONT></TD></TR>
<TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="border-bottom: Black 1.5pt solid">&nbsp;</TD>
    <TD STYLE="border-bottom: Black 1.5pt solid">&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD><FONT STYLE="font-family: Times New Roman, Times, Serif">6.</FONT></TD>
    <TD><FONT STYLE="font-family: Times New Roman, Times, Serif">CITIZENSHIP OR PLACE OF ORGANIZATION</FONT></TD></TR>
<TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD><FONT STYLE="font-family: Times New Roman, Times, Serif">GRAND DUCHY OF LUXEMBOURG</FONT></TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="border-bottom: Black 1.5pt solid">&nbsp;</TD>
    <TD STYLE="border-bottom: Black 1.5pt solid">&nbsp;</TD></TR>
</TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0"></P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 10pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse">
<TR STYLE="vertical-align: top">
    <TD ROWSPAN="4" STYLE="width: 20%">
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: center">NUMBER OF</P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: center">SHARES</P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: center">BENEFICIALLY</P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: center">OWNED BY</P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: center">EACH</P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: center">REPORTING</P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: center">PERSON</P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: center">WITH:</P></TD>
    <TD STYLE="border-bottom: Black 1.5pt solid; width: 7%"><FONT STYLE="font-family: Times New Roman, Times, Serif">7.</FONT></TD>
    <TD STYLE="border-bottom: Black 1.5pt solid; width: 73%">
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">SOLE VOTING POWER: 0</P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;&nbsp;</P></TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="border-bottom: Black 1.5pt solid"><FONT STYLE="font-family: Times New Roman, Times, Serif">8.</FONT></TD>
    <TD STYLE="border-bottom: Black 1.5pt solid">
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">SHARED VOTING POWER: 713,605,187</P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;&nbsp;</P></TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="border-bottom: Black 1.5pt solid"><FONT STYLE="font-family: Times New Roman, Times, Serif">9.</FONT></TD>
    <TD STYLE="border-bottom: Black 1.5pt solid">
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">SOLE DISPOSITIVE POWER: 0</P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;&nbsp;</P></TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="padding-bottom: 1pt"><FONT STYLE="font-family: Times New Roman, Times, Serif">10.</FONT></TD>
    <TD STYLE="padding-bottom: 1pt">
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">SHARED DISPOSITIVE POWER: 713,605,187</P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0"><B>&nbsp;&nbsp;</B></P></TD></TR>
</TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 10pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse">
<TR STYLE="vertical-align: top">
    <TD STYLE="border-top: Black 1.5pt solid; width: 7%"><FONT STYLE="font-family: Times New Roman, Times, Serif">11.</FONT></TD>
    <TD STYLE="border-top: Black 1.5pt solid; width: 93%"><FONT STYLE="font-family: Times New Roman, Times, Serif">AGGREGATE AMOUNT BENEFICIALLY
OWNED BY EACH REPORTING PERSON: 713,605,187</FONT></TD></TR>
<TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="border-bottom: Black 1.5pt solid">&nbsp;</TD>
    <TD STYLE="border-bottom: Black 1.5pt solid; text-align: right">&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD><FONT STYLE="font-family: Times New Roman, Times, Serif">12.</FONT></TD>
    <TD><FONT STYLE="font-family: Times New Roman, Times, Serif">CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS)</FONT></TD></TR>
<TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD STYLE="padding-right: 1in; text-align: right"><FONT STYLE="font-family: Wingdings">&uml;</FONT></TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="border-bottom: Black 1.5pt solid">&nbsp;</TD>
    <TD STYLE="border-bottom: Black 1.5pt solid; text-align: right">&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD><FONT STYLE="font-family: Times New Roman, Times, Serif">13.</FONT></TD>
    <TD><FONT STYLE="font-family: Times New Roman, Times, Serif">PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11): 60.4%</FONT></TD></TR>
<TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="border-bottom: Black 1.5pt solid">&nbsp;</TD>
    <TD STYLE="border-bottom: Black 1.5pt solid">&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD><FONT STYLE="font-family: Times New Roman, Times, Serif">14.</FONT></TD>
    <TD><FONT STYLE="font-family: Times New Roman, Times, Serif">TYPE OF REPORTING PERSON (SEE INSTRUCTIONS): CO</FONT></TD></TR>
<TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="border-bottom: Black 1.5pt solid">&nbsp;</TD>
    <TD STYLE="border-bottom: Black 1.5pt solid">&nbsp;</TD></TR>
</TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>


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<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 10pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse">
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    <TD STYLE="border-top: Black 1.5pt solid; width: 25%; border-bottom: Black 1.5pt solid; padding-top: 3pt; padding-bottom: 3pt"><FONT STYLE="font-family: Times New Roman, Times, Serif">CUSIP NO.<B> </B>88031 M 10 9<B> </B></FONT></TD>
    <TD STYLE="width: 75%">&nbsp;</TD></TR>
</TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 10pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse">
<TR STYLE="vertical-align: top">
    <TD STYLE="border-top: Black 1.5pt solid; width: 7%"><FONT STYLE="font-family: Times New Roman, Times, Serif">1.</FONT></TD>
    <TD STYLE="border-top: Black 1.5pt solid; width: 93%"><FONT STYLE="font-family: Times New Roman, Times, Serif">NAMES OF REPORTING PERSONS</FONT></TD></TR>
<TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD><FONT STYLE="font-family: Times New Roman, Times, Serif">TECHINT HOLDINGS S.&Agrave; R.L.</FONT></TD></TR>
<TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD><FONT STYLE="font-family: Times New Roman, Times, Serif">I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)</FONT></TD></TR>
<TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD><FONT STYLE="font-family: Times New Roman, Times, Serif">00-0000000</FONT></TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="border-bottom: Black 1.5pt solid">&nbsp;</TD>
    <TD STYLE="border-bottom: Black 1.5pt solid; text-align: right">&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD><FONT STYLE="font-family: Times New Roman, Times, Serif">2.</FONT></TD>
    <TD><FONT STYLE="font-family: Times New Roman, Times, Serif">CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (SEE INSTRUCTIONS)</FONT></TD></TR>
<TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD STYLE="padding-right: 1in; text-align: right"><FONT STYLE="font-family: Times New Roman, Times, Serif">(a)&nbsp;&nbsp;</FONT><FONT STYLE="font-family: Wingdings">&uml;</FONT></TD></TR>
<TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD STYLE="text-align: right">&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD STYLE="padding-right: 1in; text-align: right"><FONT STYLE="font-family: Times New Roman, Times, Serif">(b)&nbsp;&nbsp;</FONT><FONT STYLE="font-family: Wingdings">&uml;</FONT></TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="border-bottom: Black 1.5pt solid">&nbsp;</TD>
    <TD STYLE="border-bottom: Black 1.5pt solid; text-align: right">&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD><FONT STYLE="font-family: Times New Roman, Times, Serif">3.</FONT></TD>
    <TD><FONT STYLE="font-family: Times New Roman, Times, Serif">SEC USE ONLY</FONT></TD></TR>
<TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="border-bottom: Black 1.5pt solid">&nbsp;</TD>
    <TD STYLE="border-bottom: Black 1.5pt solid">&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD><FONT STYLE="font-family: Times New Roman, Times, Serif">4.</FONT></TD>
    <TD><FONT STYLE="font-family: Times New Roman, Times, Serif">SOURCE OF FUNDS (SEE INSTRUCTIONS): </FONT></TD></TR>
<TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD><FONT STYLE="font-family: Times New Roman, Times, Serif">N/A</FONT></TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="border-bottom: Black 1.5pt solid">&nbsp;</TD>
    <TD STYLE="border-bottom: Black 1.5pt solid">&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD><FONT STYLE="font-family: Times New Roman, Times, Serif">5.</FONT></TD>
    <TD><FONT STYLE="font-family: Times New Roman, Times, Serif">CHECK IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO &nbsp;ITEMS 2(d) OR 2(e):&nbsp;&nbsp;</FONT><FONT STYLE="font-family: Wingdings">&uml;</FONT></TD></TR>
<TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="border-bottom: Black 1.5pt solid">&nbsp;</TD>
    <TD STYLE="border-bottom: Black 1.5pt solid">&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD><FONT STYLE="font-family: Times New Roman, Times, Serif">6.</FONT></TD>
    <TD><FONT STYLE="font-family: Times New Roman, Times, Serif">CITIZENSHIP OR PLACE OF ORGANIZATION</FONT></TD></TR>
<TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD><FONT STYLE="font-family: Times New Roman, Times, Serif">GRAND DUCHY OF LUXEMBOURG</FONT></TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="border-bottom: Black 1.5pt solid">&nbsp;</TD>
    <TD STYLE="border-bottom: Black 1.5pt solid">&nbsp;</TD></TR>
</TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0"></P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 10pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse">
<TR STYLE="vertical-align: top">
    <TD ROWSPAN="4" STYLE="width: 20%">
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: center">NUMBER OF</P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: center">SHARES</P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: center">BENEFICIALLY</P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: center">OWNED BY</P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: center">EACH</P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: center">REPORTING</P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: center">PERSON</P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: center">WITH:</P></TD>
    <TD STYLE="border-bottom: Black 1.5pt solid; width: 7%"><FONT STYLE="font-family: Times New Roman, Times, Serif">7.</FONT></TD>
    <TD STYLE="border-bottom: Black 1.5pt solid; width: 73%">
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">SOLE VOTING POWER: 713,605,187</P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P></TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="border-bottom: Black 1.5pt solid"><FONT STYLE="font-family: Times New Roman, Times, Serif">8.</FONT></TD>
    <TD STYLE="border-bottom: Black 1.5pt solid">
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">SHARED VOTING POWER: </P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P></TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="border-bottom: Black 1.5pt solid"><FONT STYLE="font-family: Times New Roman, Times, Serif">9.</FONT></TD>
    <TD STYLE="border-bottom: Black 1.5pt solid">
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">SOLE DISPOSITIVE POWER: 713,605,187</P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P></TD></TR>
<TR STYLE="vertical-align: top">
    <TD><FONT STYLE="font-family: Times New Roman, Times, Serif">10.</FONT></TD>
    <TD>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">SHARED DISPOSITIVE POWER:</P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P></TD></TR>
</TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 10pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse">
<TR STYLE="vertical-align: top">
    <TD STYLE="border-top: Black 1.5pt solid; width: 7%"><FONT STYLE="font-family: Times New Roman, Times, Serif">11.</FONT></TD>
    <TD STYLE="border-top: Black 1.5pt solid; width: 93%"><FONT STYLE="font-family: Times New Roman, Times, Serif">AGGREGATE AMOUNT BENEFICIALLY
OWNED BY EACH REPORTING PERSON: 713,605,187</FONT></TD></TR>
<TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="border-bottom: Black 1.5pt solid; text-align: right">&nbsp;</TD>
    <TD STYLE="border-bottom: Black 1.5pt solid; text-align: right">&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD><FONT STYLE="font-family: Times New Roman, Times, Serif">12.</FONT></TD>
    <TD><FONT STYLE="font-family: Times New Roman, Times, Serif">CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS)</FONT></TD></TR>
<TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD STYLE="padding-right: 1in; text-align: right"><FONT STYLE="font-family: Wingdings">&uml;</FONT></TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="border-bottom: Black 1.5pt solid; text-align: right">&nbsp;</TD>
    <TD STYLE="border-bottom: Black 1.5pt solid; text-align: right">&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD><FONT STYLE="font-family: Times New Roman, Times, Serif">13.</FONT></TD>
    <TD><FONT STYLE="font-family: Times New Roman, Times, Serif">PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW&nbsp;(11): 60.4%</FONT></TD></TR>
<TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="border-bottom: Black 1.5pt solid; text-align: right">&nbsp;</TD>
    <TD STYLE="border-bottom: Black 1.5pt solid; text-align: right">&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD><FONT STYLE="font-family: Times New Roman, Times, Serif">14.</FONT></TD>
    <TD><FONT STYLE="font-family: Times New Roman, Times, Serif">TYPE OF REPORTING PERSON (SEE INSTRUCTIONS): CO</FONT></TD></TR>
<TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="border-bottom: Black 1.5pt solid">&nbsp;</TD>
    <TD STYLE="border-bottom: Black 1.5pt solid">&nbsp;</TD></TR>
</TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>


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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">This Amendment No. 4 amends and supplements the
Schedule 13D originally filed on February 14<SUP>th</SUP>, 2011 (this &ldquo;Amendment No. 4&rdquo;), as further amended by Amendments
No. 1, No. 2 and No. 3, on behalf of RP STAK, SAN FAUSTIN and TECHINT HOLDINGS (as defined thereunder), relating to the Ordinary Shares,
par value $1 per share of Tenaris S.A. (the &ldquo;Ordinary Shares&rdquo;).</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">No changes occurred except on the following Items:</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><B>Item 1. Security and Issuer</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">The principal executive offices of the Issuer were moved to 26, Boulevard
Royal, 4<SUP>th</SUP> Floor, Luxembourg L-2449, Grand-Duchy of Luxembourg.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0in"><B>Item 2. Identity and Background</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 45pt; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">This Schedule 13D is being jointly filed by each
of the following persons pursuant to Rule 13d-1(k) (collectively, the &ldquo;Reporting Persons&rdquo;).</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 18pt"></TD><TD STYLE="width: 27pt">(a)</TD><TD STYLE="text-align: justify">ROCCA &amp; PARTNERS STICHTING ADMINISTRATIEKANTOOR AANDELEN SAN FAUSTIN (&ldquo;RP STAK&rdquo;)</TD></TR></TABLE>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 45pt; text-align: justify">&ldquo;De Rotterdam&rdquo; 41<SUP>st</SUP>
floor, Wilhelminakade 173 &ndash; 3072 AP Rotterdam, The Netherlands.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 45pt; text-align: justify">RP STAK is a private foundation (<I>stichting</I>)
organized under the laws of The Netherlands. No person or group of persons controls RP STAK.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 45pt"><B>&nbsp;</B></P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 18pt"></TD><TD STYLE="width: 27pt">(b)</TD><TD STYLE="text-align: justify">SAN FAUSTIN S.A. (&ldquo;SAN FAUSTIN&rdquo;)</TD></TR></TABLE>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 45pt; text-align: justify">26, Boulevard Royal, Ground Floor, L-2449
Luxembourg.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 45pt; text-align: justify">SAN FAUSTIN is a <I>soci&eacute;t&eacute;
anonyme</I> (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&rsquo;s
policies).</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 45pt; text-align: justify">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 18pt"></TD><TD STYLE="width: 27pt">(c)</TD><TD STYLE="text-align: justify">TECHINT HOLDINGS S.&Agrave; R.L. (&ldquo;TECHINT HOLDINGS&rdquo;)</TD></TR></TABLE>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 45pt; text-align: justify">26, Boulevard Royal, Ground Floor, L-2449
Luxembourg</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 45pt; text-align: justify">TECHINT HOLDINGS is a <I>soci&eacute;t&eacute;
&agrave; responsabilit&eacute; limit&eacute;e</I> (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.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">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 and is incorporated into this Item 2 by reference.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">During the last five years, none of the Reporting
Persons, nor, to the knowledge of the Reporting Persons, none of the persons listed on Schedule I has (i) been convicted in a criminal
proceeding (excluding traffic violations or similar misdemeanors) or (ii) been a party to a civil proceeding of a judicial or administrative
body of competent jurisdiction and as a result of such proceeding was or is subject to a judgment, decree or final order enjoining future
violations of, or prohibiting or mandating activities subject to federal or state securities laws or finding any violation with respect
to such laws.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">Information with respect to each of the Reporting
Persons is given solely by such Reporting Person, and no Reporting Person assumes responsibility for the accuracy or completeness of information
given by another Reporting Person.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0in"></P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.25in; text-align: justify; text-indent: -0.25in"><B>Item 3. Source
and Amount of Funds or Other Consideration</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">The events requiring the filing of this Amendment
No. 4 did not involve any transfer of funds or any kind of consideration. This filing is due to some minor changes in the composition
of the Board of Directors or executive officers, their residence or business address and/or their present principal occupation or employment
of some of the Reporting Persons.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">There were no changes in the holdings of Ordinary
Shares of RP STAK, SAN FAUSTIN and TECHINT HOLDINGS since such Reporting Persons filed their most recent Amendment No. 3 to Schedule 13D
on June 25<SUP>th</SUP>, 2020.</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.25in; text-indent: -0.25in"><B>Item 4. Purpose of Transaction</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">This filing of the Amendment No. 4 is due to some
minor changes in the composition of the Board of Directors or executive officers, their residence or business address and/or their present
principal occupation or employment, of some of the Reporting Persons.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">There were no changes in the holdings of Ordinary
Shares of RP STAK, SAN FAUSTIN and TECHINT HOLDINGS since such Reporting Persons filed their most recent Amendment No. 3 to Schedule 13D
on June 25<SUP>th</SUP>, 2020. 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&rsquo;s policies). Shares&nbsp;representing approximately 64% of SAN FAUSTIN&rsquo;S votes and
41% of SAN FAUSTIN&rsquo;S capital are deposited with RP STAK.</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0in"><B>Item 5. Interest in Securities of the Issuer</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 42pt; text-align: justify; text-indent: -42pt">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><TR STYLE="vertical-align: top; text-align: justify">
<TD STYLE="width: 18pt"></TD><TD STYLE="width: 27pt; text-align: left">(a)&nbsp;(b)</TD><TD STYLE="text-align: justify">RP STAK. See items (7) through (11) and (13) on page 2</TD>
</TR></TABLE>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 27.6pt; text-align: justify; text-indent: 17.4pt">SAN FAUSTIN. See
items (7) through (11) and (13) on page 3</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 45pt; text-align: justify">TECHINT HOLDINGS. See items (7) through
(11) and (13) on page 4</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 45pt; text-align: justify; text-indent: -27pt">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 18pt"></TD><TD STYLE="width: 27pt">(c)</TD><TD STYLE="text-align: justify">There have been no transactions in Ordinary Shares effected by the Reporting Persons or, to the best of
the Reporting Person&rsquo;s knowledge, any person or entity identified on Schedule I hereto, during the last 60 days.</TD></TR></TABLE>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 18pt"></TD><TD STYLE="width: 27pt">(d)</TD><TD>Not applicable.</TD></TR></TABLE>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 18pt"></TD><TD STYLE="width: 27pt">(e)</TD><TD STYLE="text-align: justify">Not applicable.</TD></TR></TABLE>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; text-align: left"><B>Item
7. Material to Be Filed as Exhibits</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0in">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><TR STYLE="vertical-align: top">
<TD STYLE="border-bottom: Black 1.5pt solid">Exhibit</TD>
    <TD>&nbsp;</TD><TD STYLE="border-bottom: Black 1.5pt solid; text-align: justify">Description</TD></TR>
                                                                                                                                          <TR STYLE="vertical-align: top">
<TD>&nbsp;</TD>
    <TD>&nbsp;</TD><TD STYLE="text-align: justify">&nbsp;</TD></TR>
                                                                                                                                          <TR STYLE="vertical-align: top; background-color: rgb(204,238,255)">
<TD STYLE="width: 9%">A</TD>
    <TD STYLE="width: 1%">&nbsp;</TD><TD STYLE="text-align: justify; width: 90%"><A HREF="#poa_01">Power of Attorney of ROCCA &amp; PARTNERS STICHTING ADMINISTRATIEKANTOOR AANDELEN SAN FAUSTIN dated June 23<SUP>rd</SUP>, 2020.*</A></TD></TR><TR STYLE="vertical-align: top; background-color: White">
<TD>&nbsp;</TD>
    <TD>&nbsp;</TD><TD STYLE="text-align: justify">&nbsp;</TD></TR>

<TR STYLE="vertical-align: top; text-align: justify; background-color: rgb(204,238,255)">
<TD STYLE="text-align: left">B</TD>
    <TD>&nbsp;</TD><TD STYLE="text-align: justify"><A HREF="#poa_02">Power of Attorney of SAN FAUSTIN S.A., dated June 22<SUP>nd</SUP>, 2020.*</A></TD>
</TR><TR STYLE="vertical-align: top; text-align: justify; background-color: White">
<TD STYLE="text-align: left">&nbsp;</TD>
    <TD>&nbsp;</TD><TD STYLE="text-align: justify">&nbsp;</TD></TR>

<TR STYLE="vertical-align: top; background-color: rgb(204,238,255)">
<TD>C</TD>
    <TD>&nbsp;</TD><TD STYLE="text-align: justify"><A HREF="#poa_03">Power of Attorney of TECHINT HOLDINGS S.&agrave; r.l., dated June 22<SUP>nd</SUP>, 2020.*</A></TD></TR></TABLE>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"></P>

<!-- Field: Rule-Page --><DIV STYLE="margin-top: 0pt; margin-bottom: 0pt; width: 25%"><DIV STYLE="font-size: 1pt; border-top: Black 1.5pt solid">&nbsp;</DIV></DIV><!-- Field: /Rule-Page -->

<TABLE CELLPADDING="0" CELLSPACING="0" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; width: 100%"><TR STYLE="vertical-align: top; text-align: justify">
<TD STYLE="width: 0.25in; text-align: left"><FONT STYLE="font-size: 10pt">*</FONT></TD><TD STYLE="text-align: justify">Previously filed as an exhibit to the Schedule 13D of Tenaris
S.A. dated June 25<SUP>th</SUP>, 2020 and incorporated by reference in this Amendment No. 4.</TD>
</TR></TABLE>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>


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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 42pt; text-align: right">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 42pt; text-align: right">Schedule I</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; text-align: center"><B>ROCCA &amp; PARTNERS
STICHTING ADMINISTRATIEKANTOOR AANDELEN SAN FAUSTIN</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>&nbsp;</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B><U>MANAGEMENT</U></B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 42pt; text-align: center">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 10pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse">
  <TR STYLE="vertical-align: top">
    <TD STYLE="width: 25%; border: black 1.5pt solid; padding-left: 9pt"><FONT STYLE="font-size: 10pt"><B>Manager</B></FONT></TD>
    <TD STYLE="width: 25%; border-top: black 1.5pt solid; border-right: black 1.5pt solid; border-bottom: black 1.5pt solid; padding-right: 3pt; padding-left: 3pt"><FONT STYLE="font-size: 10pt"><B>Residence or business address</B></FONT></TD>
    <TD STYLE="width: 25%; border-top: black 1.5pt solid; border-right: black 1.5pt solid; border-bottom: black 1.5pt solid; padding-right: 3pt; padding-left: 3pt"><FONT STYLE="font-size: 10pt"><B>Present Principal occupation</B></FONT></TD>
    <TD STYLE="width: 25%; border-top: black 1.5pt solid; border-right: black 1.5pt solid; border-bottom: black 1.5pt solid; padding-right: 3pt; padding-left: 3pt"><FONT STYLE="font-size: 10pt"><B>Citizenship</B></FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="border-right: black 1.5pt solid; border-bottom: black 1.5pt solid; border-left: black 1.5pt solid; padding-left: 9pt"><FONT STYLE="font-size: 10pt">Zenco Management BV</FONT></TD>
    <TD STYLE="border-bottom: black 1.5pt solid; border-right: black 1.5pt solid; padding-right: 3pt; padding-left: 3pt"><FONT STYLE="font-size: 10pt">&ldquo;De Rotterdam&rdquo; 41<SUP>st</SUP> floor<BR>
Wilhelminakade 173<BR>
3072 AP Rotterdam<BR>
The Netherlands</FONT></TD>
    <TD STYLE="border-bottom: black 1.5pt solid; border-right: black 1.5pt solid; padding-right: 3pt; padding-left: 3pt"><FONT STYLE="font-size: 10pt">Management Company</FONT></TD>
    <TD STYLE="border-bottom: black 1.5pt solid; border-right: black 1.5pt solid; padding-right: 3pt; padding-left: 3pt"><FONT STYLE="font-size: 10pt">Dutch</FONT></TD></TR>
  </TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B><U>VOTING COMMITTEE</U></B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>&nbsp;</B></P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 10pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse">
  <TR STYLE="vertical-align: top">
    <TD STYLE="width: 25%; border: black 1.5pt solid; padding-right: 3pt; padding-left: 3pt"><FONT STYLE="font-size: 10pt"><B>Members</B></FONT></TD>
    <TD STYLE="width: 25%; border-top: black 1.5pt solid; border-right: black 1.5pt solid; border-bottom: black 1.5pt solid; padding-right: 3pt; padding-left: 3pt"><FONT STYLE="font-size: 10pt"><B>Residence or business address</B></FONT></TD>
    <TD STYLE="width: 25%; border-top: black 1.5pt solid; border-right: black 1.5pt solid; border-bottom: black 1.5pt solid; padding-right: 3pt; padding-left: 3pt"><FONT STYLE="font-size: 10pt"><B>Present principal occupation</B></FONT></TD>
    <TD STYLE="width: 25%; border-top: black 1.5pt solid; border-right: black 1.5pt solid; border-bottom: black 1.5pt solid; padding-right: 3pt; padding-left: 3pt"><FONT STYLE="font-size: 10pt"><B>Citizenship</B></FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="border-right: black 1.5pt solid; border-bottom: black 1.5pt solid; border-left: black 1.5pt solid; padding-right: 3pt; padding-left: 3pt"><FONT STYLE="font-size: 10pt">Paolo Rocca (Chairman)</FONT></TD>
    <TD STYLE="border-bottom: black 1.5pt solid; border-right: black 1.5pt solid; padding-right: 3pt; padding-left: 3pt"><FONT STYLE="font-size: 10pt">Av. Leandro N. Alem 1067, 29<SUP>th</SUP> floor, Buenos Aires, Argentina</FONT></TD>
    <TD STYLE="border-bottom: black 1.5pt solid; border-right: black 1.5pt solid; padding-right: 3pt; padding-left: 3pt"><FONT STYLE="font-size: 10pt">Chairman &amp; CEO of Tenaris S.A.</FONT></TD>
    <TD STYLE="border-bottom: black 1.5pt solid; border-right: black 1.5pt solid; padding-right: 3pt; padding-left: 3pt"><FONT STYLE="font-size: 10pt">Italian</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="border-right: black 1.5pt solid; border-bottom: black 1.5pt solid; border-left: black 1.5pt solid; padding-right: 3pt; padding-left: 3pt"><FONT STYLE="font-size: 10pt">Gianfelice Rocca </FONT></TD>
    <TD STYLE="border-bottom: black 1.5pt solid; border-right: black 1.5pt solid; padding-right: 3pt; padding-left: 3pt"><FONT STYLE="font-size: 10pt">Via Monte Rosa 93, 20149 Milan, Italy</FONT></TD>
    <TD STYLE="border-bottom: black 1.5pt solid; border-right: black 1.5pt solid; padding-right: 3pt; padding-left: 3pt"><FONT STYLE="font-size: 10pt">Chairman of the Board of San Faustin S.A.</FONT></TD>
    <TD STYLE="border-bottom: black 1.5pt solid; border-right: black 1.5pt solid; padding-right: 3pt; padding-left: 3pt"><FONT STYLE="font-size: 10pt">Italian</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="border-right: black 1.5pt solid; border-bottom: black 1.5pt solid; border-left: black 1.5pt solid; padding-right: 3pt; padding-left: 3pt"><FONT STYLE="font-size: 10pt">Roberto Bonatti</FONT></TD>
    <TD STYLE="border-bottom: black 1.5pt solid; border-right: black 1.5pt solid; padding-right: 3pt; padding-left: 3pt"><FONT STYLE="font-size: 10pt">Viale Piave 4, 20129 Milan, Italy</FONT></TD>
    <TD STYLE="border-bottom: black 1.5pt solid; border-right: black 1.5pt solid; padding-right: 3pt; padding-left: 3pt"><FONT STYLE="font-size: 10pt">Director of San Faustin S.A.</FONT></TD>
    <TD STYLE="border-bottom: black 1.5pt solid; border-right: black 1.5pt solid; padding-right: 3pt; padding-left: 3pt"><FONT STYLE="font-size: 10pt">Italian</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="border-right: black 1.5pt solid; border-bottom: black 1.5pt solid; border-left: black 1.5pt solid; padding-right: 3pt; padding-left: 3pt"><FONT STYLE="font-size: 10pt">Enrico Bonatti</FONT></TD>
    <TD STYLE="border-bottom: black 1.5pt solid; border-right: black 1.5pt solid; padding-right: 3pt; padding-left: 3pt"><FONT STYLE="font-size: 10pt">8th Floor, Farringdon Street, London, EC4A 4AB, United Kingdom</FONT></TD>
    <TD STYLE="border-bottom: black 1.5pt solid; border-right: black 1.5pt solid; padding-right: 3pt; padding-left: 3pt"><FONT STYLE="font-size: 10pt">Director of Tenaris Global Services (UK) Ltd.</FONT></TD>
    <TD STYLE="border-bottom: black 1.5pt solid; border-right: black 1.5pt solid; padding-right: 3pt; padding-left: 3pt"><FONT STYLE="font-size: 10pt">Swiss</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="border-right: black 1.5pt solid; border-bottom: black 1.5pt solid; border-left: black 1.5pt solid; padding-right: 3pt; padding-left: 3pt"><FONT STYLE="font-size: 10pt">Giovanni Sardagna</FONT></TD>
    <TD STYLE="border-bottom: black 1.5pt solid; border-right: black 1.5pt solid; padding-right: 3pt; padding-left: 3pt"><FONT STYLE="font-size: 10pt">Gravules-ch 10,<BR>
7522 La Punt chamues-ch, Switzerland</FONT></TD>
    <TD STYLE="border-bottom: black 1.5pt solid; border-right: black 1.5pt solid; padding-right: 3pt; padding-left: 3pt"><FONT STYLE="font-size: 10pt">Director of Investors&rsquo; relations of Tenaris S.A.</FONT></TD>
    <TD STYLE="border-bottom: black 1.5pt solid; border-right: black 1.5pt solid; padding-right: 3pt; padding-left: 3pt"><FONT STYLE="font-size: 10pt">Italian</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="border-right: black 1.5pt solid; border-bottom: black 1.5pt solid; border-left: black 1.5pt solid; padding-right: 3pt; padding-left: 3pt"><FONT STYLE="font-size: 10pt">Andres Pi&ntilde;eyro</FONT></TD>
    <TD STYLE="border-bottom: black 1.5pt solid; border-right: black 1.5pt solid; padding-right: 3pt; padding-left: 3pt"><FONT STYLE="font-size: 10pt">Calle Recoletos 23, 3rd floor, 28001 Madrid, Spain</FONT></TD>
    <TD STYLE="border-bottom: black 1.5pt solid; border-right: black 1.5pt solid; padding-right: 3pt; padding-left: 3pt"><FONT STYLE="font-size: 10pt">President of Meridium S.A.</FONT></TD>
    <TD STYLE="border-bottom: black 1.5pt solid; border-right: black 1.5pt solid; padding-right: 3pt; padding-left: 3pt"><FONT STYLE="font-size: 10pt">Argentine</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="border-right: black 1.5pt solid; border-bottom: black 1.5pt solid; border-left: black 1.5pt solid; padding-right: 3pt; padding-left: 3pt"><FONT STYLE="font-size: 10pt">Lodovico Rocca</FONT></TD>
    <TD STYLE="border-bottom: black 1.5pt solid; border-right: black 1.5pt solid; padding-right: 3pt; padding-left: 3pt"><FONT STYLE="font-size: 10pt">Via Monte Rosa 93, 20149 Milan, Italy</FONT></TD>
    <TD STYLE="border-bottom: black 1.5pt solid; border-right: black 1.5pt solid; padding-right: 3pt; padding-left: 3pt"><FONT STYLE="font-size: 10pt">President of Techint E&amp;C, Uruguay</FONT></TD>
    <TD STYLE="border-bottom: black 1.5pt solid; border-right: black 1.5pt solid; padding-right: 3pt; padding-left: 3pt"><FONT STYLE="font-size: 10pt">Italian</FONT></TD></TR>
  </TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 42pt">&nbsp;</P>


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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>SAN FAUSTIN S.A.</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>&nbsp;</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B><U>BOARD OF DIRECTORS</U></B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 42pt; text-align: center">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 10pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse">
  <TR STYLE="vertical-align: top">
    <TD STYLE="width: 25%; border: black 1.5pt solid; padding-right: 3pt; padding-left: 3pt"><FONT STYLE="font-size: 10pt"><B>Name</B></FONT></TD>
    <TD STYLE="width: 25%; border-top: black 1.5pt solid; border-right: black 1.5pt solid; border-bottom: black 1.5pt solid; padding-right: 3pt; padding-left: 3pt"><FONT STYLE="font-size: 10pt"><B>Residence or business address</B></FONT></TD>
    <TD STYLE="width: 25%; border-top: black 1.5pt solid; border-right: black 1.5pt solid; border-bottom: black 1.5pt solid; padding-right: 3pt; padding-left: 3pt"><FONT STYLE="font-size: 10pt"><B>Present principal occupation</B></FONT></TD>
    <TD STYLE="width: 25%; border-top: black 1.5pt solid; border-right: black 1.5pt solid; border-bottom: black 1.5pt solid; padding-right: 3pt; padding-left: 3pt"><FONT STYLE="font-size: 10pt"><B>Citizenship</B></FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="border-right: black 1.5pt solid; border-bottom: black 1.5pt solid; border-left: black 1.5pt solid; padding-right: 3pt; padding-left: 3pt"><FONT STYLE="font-size: 10pt">Gianfelice Rocca</FONT></TD>
    <TD STYLE="border-bottom: black 1.5pt solid; border-right: black 1.5pt solid; padding-right: 3pt; padding-left: 3pt"><FONT STYLE="font-size: 10pt">Via Monte Rosa 93, 20149 Milan, Italy</FONT></TD>
    <TD STYLE="border-bottom: black 1.5pt solid; border-right: black 1.5pt solid; padding-right: 3pt; padding-left: 3pt"><FONT STYLE="font-size: 10pt">Chairman of the Board of San Faustin S.A.</FONT></TD>
    <TD STYLE="border-bottom: black 1.5pt solid; border-right: black 1.5pt solid; padding-right: 3pt; padding-left: 3pt"><FONT STYLE="font-size: 10pt">Italian</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="border-right: black 1.5pt solid; border-bottom: black 1.5pt solid; border-left: black 1.5pt solid; padding-right: 3pt; padding-left: 3pt"><FONT STYLE="font-size: 10pt">Paolo Rocca</FONT></TD>
    <TD STYLE="border-bottom: black 1.5pt solid; border-right: black 1.5pt solid; padding-right: 3pt; padding-left: 3pt"><FONT STYLE="font-size: 10pt">Av. Leandro N. Alem 1067, 29<SUP>th</SUP> floor, Buenos Aires, Argentina</FONT></TD>
    <TD STYLE="border-bottom: black 1.5pt solid; border-right: black 1.5pt solid; padding-right: 3pt; padding-left: 3pt"><FONT STYLE="font-size: 10pt">Chairman&nbsp;&nbsp;&amp; CEO of Tenaris S.A.</FONT></TD>
    <TD STYLE="border-bottom: black 1.5pt solid; border-right: black 1.5pt solid; padding-right: 3pt; padding-left: 3pt"><FONT STYLE="font-size: 10pt">Italian</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="border-right: black 1.5pt solid; border-bottom: black 1.5pt solid; border-left: black 1.5pt solid; padding-right: 3pt; padding-left: 3pt"><FONT STYLE="font-size: 10pt">Roberto Bonatti</FONT></TD>
    <TD STYLE="border-bottom: black 1.5pt solid; border-right: black 1.5pt solid; padding-right: 3pt; padding-left: 3pt"><FONT STYLE="font-size: 10pt">Viale Piave 4, 20129 Milan, Italy</FONT></TD>
    <TD STYLE="border-bottom: black 1.5pt solid; border-right: black 1.5pt solid; padding-right: 3pt; padding-left: 3pt"><FONT STYLE="font-size: 10pt">Director of San Faustin S.A.</FONT></TD>
    <TD STYLE="border-bottom: black 1.5pt solid; border-right: black 1.5pt solid; padding-right: 3pt; padding-left: 3pt"><FONT STYLE="font-size: 10pt">Italian</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="border-right: black 1.5pt solid; border-bottom: black 1.5pt solid; border-left: black 1.5pt solid; padding-right: 3pt; padding-left: 3pt"><FONT STYLE="font-size: 10pt">Guido Bonatti</FONT></TD>
    <TD STYLE="border-bottom: black 1.5pt solid; border-right: black 1.5pt solid; padding-right: 3pt; padding-left: 3pt"><FONT STYLE="font-size: 10pt">Via Donizetti&nbsp;&nbsp;57, Milan, Italy</FONT></TD>
    <TD STYLE="border-bottom: black 1.5pt solid; border-right: black 1.5pt solid; padding-right: 3pt; padding-left: 3pt"><FONT STYLE="font-size: 10pt">Financial Advisor</FONT></TD>
    <TD STYLE="border-bottom: black 1.5pt solid; border-right: black 1.5pt solid; padding-right: 3pt; padding-left: 3pt"><FONT STYLE="font-size: 10pt">Italian</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="border-right: black 1.5pt solid; border-bottom: black 1.5pt solid; border-left: black 1.5pt solid; padding-right: 3pt; padding-left: 3pt"><FONT STYLE="font-size: 10pt">Marco Drago</FONT></TD>
    <TD STYLE="border-bottom: black 1.5pt solid; border-right: black 1.5pt solid; padding-right: 3pt; padding-left: 3pt"><FONT STYLE="font-size: 10pt">13, via Cattaneo, Novara, Italy</FONT></TD>
    <TD STYLE="border-bottom: black 1.5pt solid; border-right: black 1.5pt solid; padding-right: 3pt; padding-left: 3pt"><FONT STYLE="font-size: 10pt">Chairman of De Agostini SpA</FONT></TD>
    <TD STYLE="border-bottom: black 1.5pt solid; border-right: black 1.5pt solid; padding-right: 3pt; padding-left: 3pt"><FONT STYLE="font-size: 10pt">Italian</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="border-right: black 1.5pt solid; border-bottom: black 1.5pt solid; border-left: black 1.5pt solid; padding-right: 3pt; padding-left: 3pt"><FONT STYLE="font-size: 10pt">Giorgio Alliata di Montereale</FONT></TD>
    <TD STYLE="border-bottom: black 1.5pt solid; border-right: black 1.5pt solid; padding-right: 3pt; padding-left: 3pt"><FONT STYLE="font-size: 10pt">Carlos M. Della Paolera 299, 18<SUP>th</SUP> floor, Buenos Aires, Argentina</FONT></TD>
    <TD STYLE="border-bottom: black 1.5pt solid; border-right: black 1.5pt solid; padding-right: 3pt; padding-left: 3pt"><FONT STYLE="font-size: 10pt">Economist</FONT></TD>
    <TD STYLE="border-bottom: black 1.5pt solid; border-right: black 1.5pt solid; padding-right: 3pt; padding-left: 3pt"><FONT STYLE="font-size: 10pt">Italian</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="border-right: black 1.5pt solid; border-bottom: black 1.5pt solid; border-left: black 1.5pt solid; padding-right: 3pt; padding-left: 3pt"><FONT STYLE="font-size: 10pt">Bob Kneip</FONT></TD>
    <TD STYLE="border-bottom: black 1.5pt solid; border-right: black 1.5pt solid; padding-right: 3pt; padding-left: 3pt"><FONT STYLE="font-size: 10pt">33, rue des Puits de Romain, L-8070, Bertrange, Luxembourg</FONT></TD>
    <TD STYLE="border-bottom: black 1.5pt solid; border-right: black 1.5pt solid; padding-right: 3pt; padding-left: 3pt"><FONT STYLE="font-size: 10pt">Vice-Chairman of Kneip Communication Luxembourg</FONT></TD>
    <TD STYLE="border-bottom: black 1.5pt solid; border-right: black 1.5pt solid; padding-right: 3pt; padding-left: 3pt"><FONT STYLE="font-size: 10pt">Luxembourger</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="border-right: black 1.5pt solid; border-bottom: black 1.5pt solid; border-left: black 1.5pt solid; padding-right: 3pt; padding-left: 3pt"><FONT STYLE="font-size: 10pt">Andres Pi&ntilde;eyro</FONT></TD>
    <TD STYLE="border-bottom: black 1.5pt solid; border-right: black 1.5pt solid; padding-right: 3pt; padding-left: 3pt"><FONT STYLE="font-size: 10pt">Calle Recoletos 23, 3rd floor, 28001 Madrid, Spain</FONT></TD>
    <TD STYLE="border-bottom: black 1.5pt solid; border-right: black 1.5pt solid; padding-right: 3pt; padding-left: 3pt"><FONT STYLE="font-size: 10pt">President of Meridium S.A.</FONT></TD>
    <TD STYLE="border-bottom: black 1.5pt solid; border-right: black 1.5pt solid; padding-right: 3pt; padding-left: 3pt"><FONT STYLE="font-size: 10pt">Argentine</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="border-right: black 1.5pt solid; border-bottom: black 1.5pt solid; border-left: black 1.5pt solid; padding-right: 3pt; padding-left: 3pt"><FONT STYLE="font-size: 10pt">Lodovico Rocca</FONT></TD>
    <TD STYLE="border-bottom: black 1.5pt solid; border-right: black 1.5pt solid; padding-right: 3pt; padding-left: 3pt"><FONT STYLE="font-size: 10pt">Via Monte Rosa 93, 20149 Milan, Italy</FONT></TD>
    <TD STYLE="border-bottom: black 1.5pt solid; border-right: black 1.5pt solid; padding-right: 3pt; padding-left: 3pt"><FONT STYLE="font-size: 10pt">President of Techint E&amp;C, Uruguay</FONT></TD>
    <TD STYLE="border-bottom: black 1.5pt solid; border-right: black 1.5pt solid; padding-right: 3pt; padding-left: 3pt"><FONT STYLE="font-size: 10pt">Italian</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="border-right: black 1.5pt solid; border-bottom: black 1.5pt solid; border-left: black 1.5pt solid; padding-right: 3pt; padding-left: 3pt"><FONT STYLE="font-size: 10pt">Giovanni Sardagna</FONT></TD>
    <TD STYLE="border-bottom: black 1.5pt solid; border-right: black 1.5pt solid; padding-right: 3pt; padding-left: 3pt; text-indent: 0.75pt"><FONT STYLE="font-size: 10pt">Gravules-ch 10,<BR>
7522 La Punt chamues-ch, Switzerland</FONT></TD>
    <TD STYLE="border-bottom: black 1.5pt solid; border-right: black 1.5pt solid; padding-right: 3pt; padding-left: 3pt"><FONT STYLE="font-size: 10pt">Director of Investors&rsquo; relations of Tenaris S.A.</FONT></TD>
    <TD STYLE="border-bottom: black 1.5pt solid; border-right: black 1.5pt solid; padding-right: 3pt; padding-left: 3pt"><FONT STYLE="font-size: 10pt">Italian</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="border-right: black 1.5pt solid; border-bottom: black 1.5pt solid; border-left: black 1.5pt solid; padding-right: 3pt; padding-left: 3pt"><FONT STYLE="font-size: 10pt">Paolo Bassetti</FONT></TD>
    <TD STYLE="border-bottom: black 1.5pt solid; border-right: black 1.5pt solid; padding-right: 3pt; padding-left: 3pt"><FONT STYLE="font-size: 10pt">Strada Gheorghe Manu 7, Bucarest, Romania</FONT></TD>
    <TD STYLE="border-bottom: black 1.5pt solid; border-right: black 1.5pt solid; padding-right: 3pt; padding-left: 3pt"><FONT STYLE="font-size: 10pt">Director of BEPA Investitii Consultor SRL, Bucarest, Romania</FONT></TD>
    <TD STYLE="border-bottom: black 1.5pt solid; border-right: black 1.5pt solid; padding-right: 3pt; padding-left: 3pt"><FONT STYLE="font-size: 10pt">Italian</FONT></TD></TR>
  </TABLE>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; text-align: center">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B><U>OFFICERS</U></B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><B>&nbsp;</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><B></B></P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 10pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse">
  <TR STYLE="vertical-align: top">
    <TD STYLE="width: 25%; border: black 1.5pt solid; padding-right: 3pt; padding-left: 3pt"><FONT STYLE="font-size: 10pt"><B>Name</B></FONT></TD>
    <TD STYLE="width: 25%; border-top: black 1.5pt solid; border-right: black 1.5pt solid; border-bottom: black 1.5pt solid; padding-right: 3pt; padding-left: 3pt"><FONT STYLE="font-size: 10pt"><B>Residence or business address</B></FONT></TD>
    <TD STYLE="width: 25%; border-top: black 1.5pt solid; border-right: black 1.5pt solid; border-bottom: black 1.5pt solid; padding-right: 3pt; padding-left: 3pt"><FONT STYLE="font-size: 10pt"><B>Present principal occupation</B></FONT></TD>
    <TD STYLE="width: 25%; border-top: black 1.5pt solid; border-right: black 1.5pt solid; border-bottom: black 1.5pt solid; padding-right: 3pt; padding-left: 3pt"><FONT STYLE="font-size: 10pt"><B>Citizenship</B></FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="border-right: black 1.5pt solid; border-bottom: black 1.5pt solid; border-left: black 1.5pt solid; padding-right: 3pt; padding-left: 3pt"><FONT STYLE="font-size: 10pt"><B>Chairman of the Board<BR> </B>Gianfelice Rocca</FONT></TD>
    <TD STYLE="border-bottom: black 1.5pt solid; border-right: black 1.5pt solid; padding-right: 3pt; padding-left: 3pt"><FONT STYLE="font-size: 10pt">Via Monte Rosa 93, 20149 Milan, Italy</FONT></TD>
    <TD STYLE="border-bottom: black 1.5pt solid; border-right: black 1.5pt solid; padding-right: 3pt; padding-left: 3pt"><FONT STYLE="font-size: 10pt">Chairman of the Board of San Faustin S.A.</FONT></TD>
    <TD STYLE="border-bottom: black 1.5pt solid; border-right: black 1.5pt solid; padding-right: 3pt; padding-left: 3pt"><FONT STYLE="font-size: 10pt">Italian</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="border-right: black 1.5pt solid; border-bottom: black 1.5pt solid; border-left: black 1.5pt solid; padding-right: 3pt; padding-left: 3pt"><FONT STYLE="font-size: 10pt"><B>President<BR> </B>Paolo Rocca</FONT></TD>
    <TD STYLE="border-bottom: black 1.5pt solid; border-right: black 1.5pt solid; padding-right: 3pt; padding-left: 3pt"><FONT STYLE="font-size: 10pt">Av. Leandro N. Alem 1067, 29<SUP>th</SUP> floor, Buenos Aires, Argentina</FONT></TD>
    <TD STYLE="border-bottom: black 1.5pt solid; border-right: black 1.5pt solid; padding-right: 3pt; padding-left: 3pt"><FONT STYLE="font-size: 10pt">Chairman &amp; CEO of Tenaris S.A. </FONT></TD>
    <TD STYLE="border-bottom: black 1.5pt solid; border-right: black 1.5pt solid; padding-right: 3pt; padding-left: 3pt"><FONT STYLE="font-size: 10pt">Italian</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="border-right: black 1.5pt solid; border-bottom: black 1.5pt solid; border-left: black 1.5pt solid; padding-right: 3pt; padding-left: 3pt"><FONT STYLE="font-size: 10pt"><B>Vice-president<BR> </B>Giovanni Sardagna</FONT></TD>
    <TD STYLE="border-bottom: black 1.5pt solid; border-right: black 1.5pt solid; padding-right: 3pt; padding-left: 3pt"><FONT STYLE="font-size: 10pt">Gravules-ch 10,<BR> 7522 La Punt chamues-ch, Switzerland </FONT></TD>
    <TD STYLE="border-bottom: black 1.5pt solid; border-right: black 1.5pt solid; padding-right: 3pt; padding-left: 3pt"><FONT STYLE="font-size: 10pt">Director of Investors&rsquo; relations of Tenaris S.A.</FONT></TD>
    <TD STYLE="border-bottom: black 1.5pt solid; border-right: black 1.5pt solid; padding-right: 3pt; padding-left: 3pt"><FONT STYLE="font-size: 10pt">Italian</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="border-right: black 1.5pt solid; border-bottom: black 1.5pt solid; border-left: black 1.5pt solid; padding-right: 3pt; padding-left: 3pt"><FONT STYLE="font-size: 10pt"><B>Secretary of the Board of Directors<BR> </B>Fernando Jorge Mantilla</FONT></TD>
    <TD STYLE="border-bottom: black 1.5pt solid; border-right: black 1.5pt solid; padding-right: 3pt; padding-left: 3pt"><FONT STYLE="font-size: 10pt">Carlos M. Della Paolera 299, 16<SUP>th</SUP> floor, Buenos Aires, Argentina</FONT></TD>
    <TD STYLE="border-bottom: black 1.5pt solid; border-right: black 1.5pt solid; padding-right: 3pt; padding-left: 3pt"><FONT STYLE="font-size: 10pt">Attorney at law</FONT></TD>
    <TD STYLE="border-bottom: black 1.5pt solid; border-right: black 1.5pt solid; padding-right: 3pt; padding-left: 3pt"><FONT STYLE="font-size: 10pt">Argentine</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="border-right: black 1.5pt solid; border-bottom: black 1.5pt solid; border-left: black 1.5pt solid; padding-right: 3pt; padding-left: 3pt"><FONT STYLE="font-size: 10pt"><B>Assistant Secretary of the Board of Directors<BR> </B>Diego Fortunato</FONT></TD>
    <TD STYLE="border-bottom: black 1.5pt solid; border-right: black 1.5pt solid; padding-right: 3pt; padding-left: 3pt"><FONT STYLE="font-size: 10pt">26, Boulevard Royal, Ground Floor, L-2449 Luxembourg </FONT></TD>
    <TD STYLE="border-bottom: black 1.5pt solid; border-right: black 1.5pt solid; padding-right: 3pt; padding-left: 3pt"><FONT STYLE="font-size: 10pt">General Manager of San Faustin S.A.</FONT></TD>
    <TD STYLE="border-bottom: black 1.5pt solid; border-right: black 1.5pt solid; padding-right: 3pt; padding-left: 3pt"><FONT STYLE="font-size: 10pt">Italian</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="border-right: black 1.5pt solid; border-bottom: black 1.5pt solid; border-left: black 1.5pt solid; padding-right: 3pt; padding-left: 3pt"><FONT STYLE="font-size: 10pt"><B>Chief Financial Officer<BR> </B>Mario O. Lalla</FONT></TD>
    <TD STYLE="border-bottom: black 1.5pt solid; border-right: black 1.5pt solid; padding-right: 3pt; padding-left: 3pt"><FONT STYLE="font-size: 10pt">Av. Leandro N. Alem 1067, 28<SUP>th</SUP> floor, Buenos Aires, Argentina</FONT></TD>
    <TD STYLE="border-bottom: black 1.5pt solid; border-right: black 1.5pt solid; padding-right: 3pt; padding-left: 3pt"><FONT STYLE="font-size: 10pt">President of Sociedad An&oacute;nima de Mandatos y Administraci&oacute;n S.A.</FONT></TD>
    <TD STYLE="border-bottom: black 1.5pt solid; border-right: black 1.5pt solid; padding-right: 3pt; padding-left: 3pt"><FONT STYLE="font-size: 10pt">Argentine</FONT></TD></TR>
  </TABLE>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><B></B>&nbsp;</P>


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    <DIV STYLE="break-before: page; margin-top: 6pt; margin-bottom: 12pt"><P STYLE="margin: 0pt">&nbsp;</P></DIV>
    <!-- Field: /Page -->

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>&nbsp;</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>TECHINT HOLDINGS S.&agrave; r.l.</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>&nbsp;</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B><U>BOARD OF DIRECTORS</U></B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 42pt; text-align: center"><B>&nbsp;</B></P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 10pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse">
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-right: 3pt; width: 25%; border: Black 1.5pt solid; padding-left: 3pt"><FONT STYLE="font-family: Times New Roman, Times, Serif"><B>Name</B></FONT></TD>
    <TD STYLE="padding-right: 3pt; width: 25%; border-top: Black 1.5pt solid; border-right: Black 1.5pt solid; border-bottom: Black 1.5pt solid; padding-left: 3pt"><FONT STYLE="font-family: Times New Roman, Times, Serif"><B>Residence or business address</B></FONT></TD>
    <TD STYLE="padding-right: 3pt; width: 25%; border-top: Black 1.5pt solid; border-right: Black 1.5pt solid; border-bottom: Black 1.5pt solid; padding-left: 3pt"><FONT STYLE="font-family: Times New Roman, Times, Serif"><B>Present principal occupation</B></FONT></TD>
    <TD STYLE="padding-right: 3pt; width: 25%; border-top: Black 1.5pt solid; border-right: Black 1.5pt solid; border-bottom: Black 1.5pt solid; padding-left: 3pt"><FONT STYLE="font-family: Times New Roman, Times, Serif"><B>Citizenship</B></FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-right: 3pt; border-right: Black 1.5pt solid; border-bottom: Black 1.5pt solid; border-left: Black 1.5pt solid; padding-left: 3pt"><FONT STYLE="font-family: Times New Roman, Times, Serif">Gianfelice M. Rocca<BR>
(Chairman)</FONT></TD>
    <TD STYLE="padding-right: 3pt; border-right: Black 1.5pt solid; border-bottom: Black 1.5pt solid; padding-left: 3pt"><FONT STYLE="font-family: Times New Roman, Times, Serif">Via Monte Rosa 93, 20149 Milan, Italy</FONT></TD>
    <TD STYLE="padding-right: 3pt; border-right: Black 1.5pt solid; border-bottom: Black 1.5pt solid; padding-left: 3pt"><FONT STYLE="font-family: Times New Roman, Times, Serif">Chairman of the Board of San Faustin S.A.</FONT></TD>
    <TD STYLE="padding-right: 3pt; border-right: Black 1.5pt solid; border-bottom: Black 1.5pt solid; padding-left: 3pt"><FONT STYLE="font-family: Times New Roman, Times, Serif">Italian</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-right: 3pt; border-right: Black 1.5pt solid; border-bottom: Black 1.5pt solid; border-left: Black 1.5pt solid; padding-left: 3pt"><FONT STYLE="font-family: Times New Roman, Times, Serif">Mario O. Lalla</FONT></TD>
    <TD STYLE="padding-right: 3pt; border-right: Black 1.5pt solid; border-bottom: Black 1.5pt solid; padding-left: 3pt"><FONT STYLE="font-family: Times New Roman, Times, Serif">Av. Leandro N. Alem 1067, 28<SUP>th</SUP> floor, Buenos Aires, Argentina</FONT></TD>
    <TD STYLE="padding-right: 3pt; border-right: Black 1.5pt solid; border-bottom: Black 1.5pt solid; padding-left: 3pt"><FONT STYLE="font-family: Times New Roman, Times, Serif">President of Sociedad An&oacute;nima de Mandatos y Administraci&oacute;n S.A.</FONT></TD>
    <TD STYLE="padding-right: 3pt; border-right: Black 1.5pt solid; border-bottom: Black 1.5pt solid; padding-left: 3pt"><FONT STYLE="font-family: Times New Roman, Times, Serif">Argentine</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-right: 3pt; border-right: Black 1.5pt solid; border-bottom: Black 1.5pt solid; border-left: Black 1.5pt solid; padding-left: 3pt"><FONT STYLE="font-family: Times New Roman, Times, Serif">Alain Renard</FONT></TD>
    <TD STYLE="padding-right: 3pt; border-right: Black 1.5pt solid; border-bottom: Black 1.5pt solid; padding-left: 3pt"><FONT STYLE="font-family: Times New Roman, Times, Serif">74, Grand-Rue<BR>
L-1660 Luxembourg, Grand Duchy of Luxembourg</FONT></TD>
    <TD STYLE="padding-right: 3pt; border-right: Black 1.5pt solid; border-bottom: Black 1.5pt solid; padding-left: 3pt"><FONT STYLE="font-family: Times New Roman, Times, Serif">Member of the Executive Committee of Atalux</FONT></TD>
    <TD STYLE="padding-right: 3pt; border-right: Black 1.5pt solid; border-bottom: Black 1.5pt solid; padding-left: 3pt"><FONT STYLE="font-family: Times New Roman, Times, Serif">French</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-right: 3pt; border-right: Black 1.5pt solid; border-bottom: Black 1.5pt solid; border-left: Black 1.5pt solid; padding-left: 3pt"><FONT STYLE="font-family: Times New Roman, Times, Serif">Michele Zerbi</FONT></TD>
    <TD STYLE="padding-right: 3pt; border-right: Black 1.5pt solid; border-bottom: Black 1.5pt solid; padding-left: 3pt"><FONT STYLE="font-family: Times New Roman, Times, Serif">74, Grand-Rue<BR>
L-1660 Luxembourg, Grand Duchy of Luxembourg</FONT></TD>
    <TD STYLE="padding-right: 3pt; border-right: Black 1.5pt solid; border-bottom: Black 1.5pt solid; padding-left: 3pt"><FONT STYLE="font-family: Times New Roman, Times, Serif">General Manager of MVC (Metallurgical V.C.) S.A.</FONT></TD>
    <TD STYLE="padding-right: 3pt; border-right: Black 1.5pt solid; border-bottom: Black 1.5pt solid; padding-left: 3pt"><FONT STYLE="font-family: Times New Roman, Times, Serif">Italian</FONT></TD></TR>
  </TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 42pt">&nbsp;</P>


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    <DIV STYLE="break-before: page; margin-top: 6pt; margin-bottom: 12pt"><P STYLE="margin: 0pt">&nbsp;</P></DIV>
    <!-- Field: /Page -->

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 42pt">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><U>SIGNATURE</U></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in">After reasonable inquiry and
to the best of my knowledge and belief, I, Fernando J. Mantilla, attorney duly authorized by ROCCA &amp; PARTNERS STICHTING ADMINISTRATIEKANTOOR
AANDELEN SAN FAUSTIN to sign this statement, certify that the information set forth in this statement is true, complete and correct.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in">Pursuant to Rule 13d-1(k)(1),
the undersigned joins in the filing of this Amendment No. 4 on his own behalf and on behalf of SAN FAUSTIN S.A. and TECHINT HOLDINGS S.&Agrave;
R.L.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">June 28<SUP>th</SUP>, 2021</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 10pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse">
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-bottom: 1.5pt; width: 60%">&nbsp;</TD>
    <TD STYLE="border-bottom: Black 1.5pt solid; width: 40%"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">/s/ Fernando J. Mantilla</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">Attorney-in-fact</FONT></TD></TR>
  </TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">&nbsp;</P>


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    <DIV STYLE="break-before: page; margin-top: 6pt; margin-bottom: 12pt"><P STYLE="margin: 0pt">&nbsp;</P></DIV>
    <!-- Field: /Page -->

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><U>SIGNATURE</U></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in">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.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in">Pursuant to Rule 13d - 1(k)(1),
the undersigned joins in the filing of this Amendment No. 4 on his own behalf and on behalf of ROCCA &amp; PARTNERS STICHTING ADMINISTRATIEKANTOOR
AANDELEN SAN FAUSTIN and TECHINT HOLDINGS S.&Agrave; R.L.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">June 28<SUP>th</SUP>, 2021</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 10pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse">
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-bottom: 1.5pt; width: 60%">&nbsp;</TD>
    <TD STYLE="border-bottom: Black 1.5pt solid; width: 40%"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">/s/ Fernando J. Mantilla</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">Attorney-in-fact</FONT></TD></TR>
  </TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">&nbsp;</P>


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    <DIV STYLE="break-before: page; margin-top: 6pt; margin-bottom: 12pt"><P STYLE="margin: 0pt">&nbsp;</P></DIV>
    <!-- Field: /Page -->

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><U>SIGNATURE</U></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in">After reasonable inquiry and
to the best of my knowledge and belief, I, Fernando J. Mantilla, attorney duly authorized by TECHINT HOLDINGS S.&Agrave; R.L. to sign
this statement, certify that the information set forth in this statement is true, complete and correct.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in">Pursuant to Rule 13d-1(k)(1),
the undersigned joins in the filing of this Amendment No. 4 on his own behalf and on behalf of ROCCA &amp; PARTNERS STICHTING ADMINISTRATIEKANTOOR
AANDELEN SAN FAUSTIN and SAN FAUSTIN S.A.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">June 28<SUP>th</SUP>, 2021</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 10pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse">
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-bottom: 1.5pt; width: 60%">&nbsp;</TD>
    <TD STYLE="border-bottom: Black 1.5pt solid; width: 40%"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">/s/ Fernando J. Mantilla</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">Attorney-in-fact</FONT></TD></TR>
  </TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 2pt 0pt 27pt; text-align: justify; text-indent: 0.5in"></P>

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    <DIV STYLE="break-before: page; margin-top: 6pt; margin-bottom: 12pt"><P STYLE="margin: 0pt">&nbsp;</P></DIV>
    <!-- Field: /Page -->

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 2pt 0pt 27pt; text-align: justify; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 5pt 0pt 0; text-align: right"><A NAME="poa_01"></A>Exhibit A</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 5pt 0pt 0; text-align: right">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>POWER OF ATTORNEY</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>&nbsp;</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">The undersigned, J. de Jong, Director of Zenco
Management B.V., sole Director of ROCCA &amp; PARTNERS STICHTING ADMINISTRATIEKANTOOR AANDELEN SAN FAUSTIN, a private foundation (Stichting)
organized under the laws of the Netherlands, hereby constitutes and appoints <B>Fernando J. Mantilla, Mario O. Lalla and Michele Zerbi</B>,
each of them acting severally, as attorneys or attorney of the undersigned, to sign on its behalf a Statement on Schedule 13G or 13D relating
to the Common Stock of TENARIS S.A., including any agreements attached as exhibits thereto, and to sign any or all amendments to such
Statement, and to file the same, with all exhibits thereto, and other documents in connection therewith, with the Securities and Exchange
Commission of the United States of America, granting unto said attorneys or attorney, and each of them, full power and authority to do
and perform each and every act and thing requisite and necessary to be done in and about the premises, hereby ratifying and confirming
all that said attorneys or attorney may lawfully do or cause to be done by virtue hereof.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">By:</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 10pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse">
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-bottom: 1.5pt; width: 30%; text-align: center">&nbsp;</TD>
    <TD STYLE="border-bottom: Black 1.5pt solid; width: 40%; text-align: center"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">/s/ J. de Jong</FONT></TD>
    <TD STYLE="padding-bottom: 1.5pt; width: 30%; text-align: center">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="text-align: center">&nbsp;</TD>
    <TD STYLE="text-align: center"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">(on behalf of Zenco Management B.V.)</FONT></TD>
    <TD STYLE="text-align: center">&nbsp;</TD></TR>
  </TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">Dated: June 23<SUP>rd</SUP>, 2020</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">&nbsp;</P>


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    <DIV STYLE="break-before: page; margin-top: 6pt; margin-bottom: 12pt"><P STYLE="margin: 0pt">&nbsp;</P></DIV>
    <!-- Field: /Page -->

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: right">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: right"><A NAME="poa_02"></A>Exhibit B</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: right">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">[<I>LETTERHEAD OF SAN FAUSTIN S.A.</I>]</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>POWER OF ATTORNEY</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>&nbsp;</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">The undersigned, Alain Renard and Michele Zerbi,
Attorneys-in-fact of SAN FAUSTIN S.A., a company organized under the laws of the Grand Duchy of Luxembourg, hereby constitutes and appoints
<B>Fernando J. Mantilla, Mario O. Lalla and Michele Zerbi</B>, each of them acting severally, as attorneys or attorney of the undersigned,
to sign on its behalf a Statement on Schedule 13G or 13D relating to the Common Stock of TENARIS S.A., including any agreements attached
as exhibits thereto, and to sign any or all amendments to such Statement, and to file the same, with all exhibits thereto, and other documents
in connection therewith, with the Securities and Exchange Commission of the United States of America, granting unto said attorneys or
attorney, and each of them, full power and authority to do and perform each and every act and thing requisite and necessary to be done
in and about the premises, hereby ratifying and confirming all that said attorneys or attorney may lawfully do or cause to be done by
virtue hereof.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">By:</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 10pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse">
  <TR STYLE="vertical-align: top">
    <TD STYLE="border-bottom: Black 1.5pt solid; width: 40%; text-align: center"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">/s/ Alain Renard</FONT></TD>
    <TD STYLE="padding-bottom: 1.5pt; width: 20%; text-align: center">&nbsp;</TD>
    <TD STYLE="border-bottom: Black 1.5pt solid; width: 40%; text-align: center"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">/s/ Michele Zerbi</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="text-align: center"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">Attorney-in-fact </FONT></TD>
    <TD STYLE="text-align: center">&nbsp;</TD>
    <TD STYLE="text-align: center"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">Attorney-in-fact</FONT></TD></TR>
  </TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">Dated: June 22<SUP>nd</SUP>, 2020.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">&nbsp;</P>


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    <DIV STYLE="break-before: page; margin-top: 6pt; margin-bottom: 12pt"><P STYLE="margin: 0pt">&nbsp;</P></DIV>
    <!-- Field: /Page -->

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: right">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: right"><A NAME="poa_03"></A>Exhibit C</P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">[<I>LETTERHEAD OF TECHINT HOLDINGS S.&Agrave;R.L.</I>]</P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>POWER OF ATTORNEY</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>&nbsp;</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">The undersigned, Alain Renard and Michele Zerbi,
Directors (&ldquo;<I>g&eacute;rants</I>&rdquo;) of TECHINT HOLDINGS S.&Agrave; R.L., a company organized under the laws of the Grand Duchy
of Luxembourg, hereby constitutes and appoints <B>Fernando J. Mantilla and Mario O. Lalla and Michele Zerbi</B>, each of them acting severally,
as attorneys or attorney of the undersigned, to sign on its behalf a Statement on Schedule 13G or 13D relating to the Common Stock of
TENARIS S.A., including any agreements attached as exhibits thereto, and to sign any or all amendments to such Statement, and to file
the same, with all exhibits thereto, and other documents in connection therewith, with the Securities and Exchange Commission of the United
States of America, granting unto said attorneys or attorney, and each of them, full power and authority to do and perform each and every
act and thing requisite and necessary to be done in and about the premises, hereby ratifying and confirming all that said attorneys or
attorney may lawfully do or cause to be done by virtue hereof.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; text-align: left"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">By:</FONT></P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 10pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse">
  <TR STYLE="vertical-align: top">
    <TD STYLE="border-bottom: Black 1.5pt solid; width: 40%; text-align: center"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">/s/ Alain Renard</FONT></TD>
    <TD STYLE="padding-bottom: 1.5pt; width: 20%; text-align: center">&nbsp;</TD>
    <TD STYLE="border-bottom: Black 1.5pt solid; width: 40%; text-align: center"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">/s/ Michele Zerbi</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="text-align: center"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">Director </FONT></TD>
    <TD STYLE="text-align: center">&nbsp;</TD>
    <TD STYLE="text-align: center"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">Director</FONT></TD></TR>
  </TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 1in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">Dated: June 22<SUP>nd</SUP>, 2020</P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; text-align: center">Page 15 of
15</P>

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