Share capital and votes

Number of issued shares: 1,180,536,830

Each share is of par value U.S.$ 1.00 per share and entitles the holder thereof to one vote at Tenaris’s general shareholders’ meetings.

Registered major holders:

The following holders have notified Tenaris of holdings in excess of 5% of its voting rights:

⁽¹⁾ San Faustin S.A. (formerly known as San Faustin N.V.) owns all of its shares in the Company through its wholly-owned subsidiary Techint Holdings S.àr.l. (formerly known as I.I.I. Industrial Investments Inc.) In connection with the 2011 redomiciliation of San Faustin from Curacao to Luxembourg, San Faustin's controlling entity Rocca & Partners S.A. organized a Dutch private foundation (Stichting) under the name of Rocca & Partners Stichting Administratiekantoor Aandelen San Faustin ("RP STAK"). RP STAK holds shares in San Faustin sufficient in number to control San Faustin. No person or group of persons controls RP STAK.

⁽²⁾ On April 27, 2011, Aberdeen Asset Management PLC's Fund Management Operating Subsidiaries informed Tenaris, pursuant to the Luxembourg Transparency Law, that as of April 26, 2011, it is deemed to be the beneficial owner of 59,184,400 ordinary shares of Tenaris, par value U.S.$ 1.00 per share, representing 5.01% of Tenaris's issued and outstanding capital and votes.

Important notice under Luxembourg law

Under Luxembourg legislation implementing the EU Transparency Directive, each investor in Tenaris’s securities should notify Tenaris and the Luxembourg securities commission (the CSSF) on an ongoing basis whenever the proportion of Tenaris's voting rights held or controlled by such investor reaches, exceeds or falls below any of the following thresholds: 5%, 10%, 15%, 20%, 25%, 33.33%, 50% and 66.66%. The number of shares and votes set forth above should be used for purposes of determining whether an investor reaches or exceeds each such threshold.

Any such notification to Tenaris under the Luxembourg Transparency Law or its regulations should be made in writing no later than six business days following the date of the transaction giving rise to the notification obligation, using a special form and sent electronically to investors@tenaris.com or by post to:

Tenaris S.A.
29 Avenue de la Porte-Neuve
3rd Floor
L-2227 Luxembourg
Att: Company Secretary

Any notification to the CSSF shall be made in accordance with CSSF regulations.

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