Tenaris S.A (NYSE:TS) Q1 2019 Earnings Conference Call May 3, 2019 8:30 AM ET Company Participants Giovanni Sardagna – Investor Relations Paolo Rocca – Chairman and Chief Executive Officer Luca Zanotti – President of our U.S. Operations Gabriel Podskubka – President of our Eastern Hemisphere Operations Guillermo Vogel – Vice Chairman and member of our Board of Directors Edgardo Carlos – Chief Financial Officer German Cura – Vice Chairman and member of our Board of Directors Conference Call Participants Igor ...

WHEN: Friday May 3rd 2019 MARK YOUR CALENDAR Dear Financial Community Member: Tenaris S.A. would like to invite you to participate in a conference call to discuss the Company's First Quarter 2019 results. Please note that the press release will be issued after market close on Thursday, May 2nd 2019. Representing Tenaris will be Paolo Rocca, Chairman and Chief Executive Officer; Germán Curá, Board member and Vice Chairman, Guillermo Vogel, Board member and Vice Chairman; Edgardo Carlos, Chief Financial Offic ...

Financial Risks - The company is exposed to foreign exchange rate risk due to operations in multiple currencies, which could adversely affect financial condition and results of operations[66]. - The company's ability to pay dividends is dependent on the financial health of its subsidiaries and may be restricted by legal and contractual limitations[78]. - Cyberattacks pose a significant risk, potentially leading to operational disruptions and financial losses[77]. Regulatory Compliance - Compliance with anti-corruption laws is critical, as violations could lead to governmental investigations, fines, and impact sales and profitability[67]. - Environmental regulations are becoming more stringent, potentially increasing operating costs and negatively impacting financial condition and results of operations[69]. - Compliance with local procedural requirements is necessary for the enforceability of judgments[88]. Operational Risks - The company’s oil and gas products are subject to inherent risks, including well failures and environmental liabilities, which could result in significant damages[72]. - Defects in specialty tubing products may lead to claims for damages, impacting financial condition and operational performance[74]. Intellectual Property - Limitations on intellectual property rights could result in revenue loss and diminished competitive advantage[76]. Shareholder Rights - The controlling shareholder holds 60.45% of shares, which may lead to decisions that do not align with the interests of minority shareholders[82]. - Holders of ADSs may face challenges in exercising certain shareholder rights, which could limit their influence over corporate actions[84]. Jurisdictional Challenges - The Company is organized under the laws of Luxembourg, complicating enforcement of judgments against it outside this jurisdiction[88]. - Most of the Company's assets and directors are located in different jurisdictions, impacting investors' ability to serve process[88]. - Investors may face challenges in enforcing judgments based on civil liability provisions of their home countries' laws against the Company and its officers[88]. - There is uncertainty regarding the enforceability of civil liability actions based on securities laws outside the jurisdiction where judgments are rendered[88]. - The Company may not be subject to the civil liability provisions of U.S. federal securities laws in Luxembourg courts[88]. - Investors not domiciled in Luxembourg may find it difficult to initiate original actions in Luxembourg courts[88]. - The public policy of the applicable jurisdiction may affect the enforceability of judgments[88].

Tenaris S.A. (NYSE:TS) Q4 2018 Earnings Conference Call February 21, 2019 9:00 AM ET Company Participants Giovanni Sardagna – Investor Relations Officer Paolo Rocca – Chairman and Chief Executive Officer Gabriel Podskubka – President of our Eastern Hemisphere Operations Luca Zanotti – President of our U.S. Operations German Cura – Vice Chairman Edgardo Carlos – Chief Financial Officer Conference Call Participants Igor Levi – BTIG Frank McGann – Bank of America Ian MacPherson – Simmons Michael Rae – Redburn ...