Senior Management

Mr. Rocca is chairman of the Company's board of directors and our chief executive officer. He is a grandson of Agostino Rocca. He is also chairman of the board of directors of Tamsa. He is also chairman of the board of directors of Ternium, director and vice president of San Faustin and director of Techint Financial Corporation N.V. Mr. Rocca is the Chairman of the World Steel Association and member of the International Advisory Committee of the NYSE Euronext (New York Stock Exchange). Mr. Rocca is an Italian citizen.

Mr. Soler currently serves as our chief financial officer, a position that he assumed in October 2007. Previously he served as chief executive officer of Hydril and from 1999 until November 2006 served as managing director of our welded pipe operations in South America and as executive vice-president of Confab and Siat. He started his career in the Techint group in 1973 as a planning analyst at Siderar. He served as Siderca's financial director from 1993 until 1995. Mr. Soler is an Argentine citizen.

Mr. González currently serves as our Technology Director. He began his career within the Techint group in 1986 in the Industrial Research Center of Siderca and has held many positions within Tenaris, including Quality Manager of Dalmine. In 1998, he was appointed Product Development Director. He assumed his current position in July 2009. Mr. González is an Argentine citizen.

Mr. Lammertyn currently serves as our commercial director. Previously he served as supply chain director. He began his career with Tenaris in 1990 as special projects analyst in Siderca. In 2000, he was assistant to the CEO for marketing, organizational model and mill allocation matters. He assumed his current position in August 2007. Mr. Lammertyn is an Argentine citizen.

Mr. Catallini currently serves as our supply chain director, with responsibility for the execution of all contractual deliveries to customers. He joined Tenaris in 2001 in the supply management area, as a general manager of Exiros Argentina. In July 2002, he was appointed operations director and subsequently, in January 2005, became managing director of Exiros. Before joining Tenaris, he worked for ten years in the energy sector, working for TGN, Nova Gas Internacional, TransCanada Pipelines and TotalFinaElf, among others. He assumed his current position in August 2007. Mr. Catallini is an Argentine citizen.

Mr. Radnic currently serves as our human resources director. He began his career within the Techint group in the Industrial Engineering Department of Siderar in 1975. Later he held several positions in the technical departments of Siderca and various companies within the Techint group. After holding several positions in the marketing and procurement areas in Europe, in 1996 he became commercial director of Dalmine. In 1998, he became the director of our Process and Power Services business unit. In 2001, he was appointed chief of staff for Paolo Rocca in Buenos Aires. He assumed his current position in December 2002. Mr. Radnic is an Argentine citizen.

Mr. Ramos currently serves as our quality director. Previously he served as managing director of NKKTubes and our Japanese operations. He joined the Techint group in 1987 and has held various positions within Tenaris including quality control director at Siderca. He assumed his current position in 2006. Mr. Ramos is an Argentine citizen.

Mr. Tosato currently serves as our industrial coordination director. He first joined Dalmine in 1974 in the personnel organization area, and has held many positions within Tenaris, including director of operations in Siderca and manufacturing director in Dalmine, before assuming his current position in 2003. Mr. Tosato is an Italian citizen.

Mr. Curá currently serves as our North American area manager. He is a marine engineer and was first employed with Siderca in 1988. Previously, he served as Siderca's exports director, Tamsa's exports director and commercial director, sales and marketing manager of our Middle East office, president of Algoma Tubes, director of our Oilfield Services business unit and commercial director. He is also a member of the board of directors of the American Petroleum Institute (API). He assumed his current position in October 2006. Mr. Curá is an Argentine citizen.

Mr. de la Maza currently serves as our Central American area manager and also serves as a director and executive vice-president of Tamsa. Previously he served as our Mexican area manager. He first joined Tamsa in 1980. From 1983 to 1988, Mr. de la Maza worked in several positions in Tamsa and Dalmine. He then became manager of Tamsa's new pipe factory and later served as manufacturing manager and quality director of Tamsa. Subsequently, he was named manufacturing director of Siderca. He assumed his current position in 2006. Mr. de la Maza is a Mexican citizen.

Mr. Noriega currently serves as our South American area manager and also serves as managing director of Siderca. He began his career at Siderca as an industrial engineer in 1981. Previously, he served as Siderca's commercial director for the Argentine market. He assumed his current position with Siderca in 2000. Mr. Noriega is an Argentine citizen.

Mr. Crapanzano currently serves as our European area manager and also serves as managing director of Dalmine. Previously he served as our Mexican area manager and executive vice president of Tamsa. Prior to joining Tenaris, he held various positions at Grupo Falck from 1979 to 1989. When Dalmine acquired the tubular assets of Grupo Falck in 1990, he was appointed managing director of the cold drawn tubes division. He is also vice president of Centro Sviluppo Materiali S.p.A. and of Federacciai. He assumed his current position in January 2004. Mr. Crapanzano is an Italian citizen.

Mr. Pappier currently serves as our planning director, a position that he assumed in October 2006. He began his career within the Techint group in 1984 as a cost analyst in Siderar. After holding several positions within Tenaris and other Techint group companies in 2002 he became chief of staff of Tenaris. Mr. Pappier is an Argentine citizen.

Mr. Leali currently serves as managing director of our Japanese operations, a position that he assumed in November 2006. He began his career at Dalmine as a development product technician in 1976. From March 1994 to October 1995 he served as technical managing director of DMV, a joint venture between Dalmine, Vallourec and Mannesmann. Before assuming his current position he also served as quality director and as executive assistant of the technology department. Mr. Leali is an Italian citizen.