Brazilian Court Orders Tenaris to Pay an Indemnification in Connection with its Acquisition of a Participation in Usiminas in 2012

The Company continues to believe that all of CSN's claims and allegations are groundless and without merit, as confirmed by several opinions of Brazilian legal counsel, two decisions issued by the Brazilian securities regulator in February 2012 and December 2016, the first and second instance court decisions and the March 7, 2023 SCJ decision referred to above. The Company also believes that today's SCJ decision on CSN's motion for clarification is contrary to applicable substantive and procedural law. Acco ...