Tenaris Provides Information Required Under New...

Corporate news announcement processed and transmitted by Hugin ASA.
The issuer is solely responsible for the content of this 
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Corporate news announcement processed and transmitted by Hugin ASA.
The issuer is solely responsible for the content of this 
announcement. 
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LUXEMBOURG--(Marketwire - February 19, 2008) - Tenaris S.A. (NYSE:
TS) (BAE: TS) (MXSE: TS) (MILAN: TEN), pursuant to recently enacted
Luxembourg legislation implementing the EU Transparency Directive,
reminds investors that as of the date hereof the number of issued
shares of its capital is 1,180,536,830 ordinary shares, par value
U.S. $1.00 per share, each entitling the holder thereof to one vote
at Tenaris's general shareholders' meetings.

Under the new legislation, investors in Tenaris's securities who
directly or indirectly own or otherwise control 5% or more of the
shares of Tenaris's capital or the rights to vote such shares should
give notice thereof to Tenaris by March 19, 2008, for further
publication to the market. The number of shares and votes set forth
above should be used for purposes of determining whether an investor
reaches or exceeds such threshold. In addition, investors should
notify Tenaris and the Luxembourg securities commission (the CSSF) on
an ongoing basis whenever their direct or indirect ownership or other
control rights over shares of Tenaris's capital or rights to vote
such shares either reaches, exceeds or falls below any of the
following thresholds: 5%, 10%, 15%, 20%, 25%, 33.33%, 50% and 66.66%.

Further information is or will be made available, as appropriate, at:
www.tenaris.com/en/Investors/sharecapitalandvotes.asp.

This information does not constitute legal advice. Investors are
encouraged to seek advice of counsel in connection with their
obligations under the new legislation and the consequences of failing
to comply with any such obligations."

Tenaris is a leading global supplier of steel tubes and related
services for the world's energy industry and certain other industrial
applications.


Nigel Worsnop
Tenaris
1-888 300 5432
www.tenaris.com

Nigel Worsnop
Tenaris
1-888 300 5432
www.tenaris.com


 
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Tenaris S.A.
2200 West Loop South, 8th floor Houston  USA

WKN: 
164557; ISIN: LU0156801721; 
Listed: NEW YORK STOCK EXCHANGE, INC. in NEW YORK STOCK EXCHANGE, 
INC.;