<SEC-DOCUMENT>0001144204-15-066843-index.html : 20151119
<SEC-HEADER>0001144204-15-066843.hdr.sgml : 20151119
<ACCEPTANCE-DATETIME>20151119060259
ACCESSION NUMBER:		0001144204-15-066843
CONFORMED SUBMISSION TYPE:	SC 13D/A
PUBLIC DOCUMENT COUNT:		1
FILED AS OF DATE:		20151119
DATE AS OF CHANGE:		20151119
GROUP MEMBERS:		ROCCA & PARTNERS STICHTING ADMINISTRATIEKANTOOR AANDELEN SAN
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:		151242309

	BUSINESS ADDRESS:	
		STREET 1:		29 AVENUE DE LA PORTE-NEUVE
		STREET 2:		3RD FLOOR
		CITY:			LUXEMBOURG
		STATE:			N4
		ZIP:			L 2227
		BUSINESS PHONE:		212-376-6500

	MAIL ADDRESS:	
		STREET 1:		29 AVENUE DE LA PORTE-NEUVE
		STREET 2:		3RD FLOOR
		CITY:			LUXEMBOURG
		STATE:			N4
		ZIP:			L 2227

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:			0630

	FILING VALUES:
		FORM TYPE:		SC 13D/A

	BUSINESS ADDRESS:	
		STREET 1:		3B, BOULEVARD PRINCE HENRI
		CITY:			LUXEMBOURG
		STATE:			N4
		ZIP:			L- 1471
		BUSINESS PHONE:		(41-91) 913-7979

	MAIL ADDRESS:	
		STREET 1:		VIA EMILIO BOSSI,1
		CITY:			LUGANO
		STATE:			V8
		ZIP:			6900

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	San Faustin N.V.
		DATE OF NAME CHANGE:	20080312
</SEC-HEADER>
<DOCUMENT>
<TYPE>SC 13D/A
<SEQUENCE>1
<FILENAME>v425153_sc13da.htm
<DESCRIPTION>SC 13D/A
<TEXT>
Document 1 - file: v425153_sc13da.htm

</DOCUMENT>
</SEC-DOCUMENT>