Tenaris's controlling shareholder files an amendment to Schedule 13D in response to Tenaris's ongoing share buyback program
1. San Faustin and Techint plan to sell shares of Tenaris. 2. Techint will maintain a minimum 67% ownership in Tenaris. 3. Sales timing and amount depend on market conditions. 4. Tenaris continues share repurchase program increasing San Faustin's ownership. 5. Risks from oil and gas price uncertainties noted in the report.