Tenaris Files Annual Report 2011 and Convenes General Meetings of Shareholders

LUXEMBOURG--(Marketwire - Mar 30, 2012) - Tenaris S.A. (NYSE: TS) (BAE: TS) (BVM: TS) (MILAN: TEN), filed today with its securities regulators its annual report for the year ended December 31, 2011. Tenaris also published the convening notice to the Annual General Meeting of Shareholders that will be held at Tenaris's registered office located at 29, avenue de la Porte-Neuve, 3rd Floor, L-2227 Luxembourg on May 2, 2012, at 11:00 a.m. (Luxembourg time) and the Extraordinary General Meeting of Shareholders that will be held immediately thereafter. The annual report and the convening notice (including the agendas for both meetings) can be downloaded from the Luxembourg Stock Exchange's website at www.bourse.lu. In addition, these documents, together with the proxy materials for the meetings, may be obtained free of charge from Tenaris's website at www.tenaris.com/investors, at the Company's registered office in Luxembourg, or upon request (by calling +352 26-47-89-78, +1-800-555-2470, or +1-267-468-0786 or sending an electronic message to the following electronic address: investors@tenaris.com).

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