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Core Points - Tenaris S.A. announced that its controlling shareholder, San Faustin S.A., has crossed a voting rights threshold due to the company's share buyback program [1] - San Faustin owns 713,605,187 shares, representing 66.82% of Tenaris's voting rights following share repurchases from June 9 to June 13, 2025 [2] - The control structure of Tenaris remains unchanged as confirmed by San Faustin [2] Company Overview - Tenaris is a leading global supplier of steel tubes and related services for the energy industry and other industrial applications [3]