Roberto Bonatti — Director at Tenaris

Mr. Roberto Bonatti serves as the President of Sadma Uruguay S.A. and Tecpetrol. Mr. Bonatti has been the President at San Faustin S.A., a subsidiary of Tenaris SA since 2001. He has 29 years of experience in the Techint Group. He served as Deputy Resident Engineer in Venezuela at the Techint Group since 1976. He has been involved in Techint Group businesses, specifically in the engineering and construction and corporate sectors, throughout his career. He has been a Director at Tenaris SA since 2003 and Ternium S.A. since 2005. He serves as a Director of Inverban S.A. Since 1984, he served as a Director at San Faustin S.A. Mr. Bonatti served as a Director of Siderar and Siderca.