Group 1 - Tenaris S.A. filed its 2025 Annual Report with the Luxembourg Stock Exchange and the U.S. Securities and Exchange Commission (SEC) [1] - The 2025 Annual Report is available for download on both the Luxembourg Stock Exchange's website and Tenaris's website [2] - Tenaris will file its annual report on Form 20-F for the year ended December 31, 2025, with the SEC on March 31, 2026 [2] Group 2 - Holders of Tenaris's shares and ADSs can request a hard copy of the reports free of charge through the company's website [3] - The 2025 Annual Report includes a consolidated management report, consolidated financial statements, annual accounts, and management certifications [3] - Tenaris is recognized as a leading global supplier of steel tubes and related services for the energy industry and other industrial applications [3]

Group 1 - Tenaris S.A. has received a notification of a securities transaction from a person discharging managerial responsibilities, in compliance with Regulation (EU) No 596/2014 and applicable Luxembourg laws [1] - The notification has been filed with the Luxembourg Commission de Surveillance du Secteur Financier and the Luxembourg Stock Exchange, and is accessible online [1] - Information on transactions reported by persons discharging managerial responsibilities in Tenaris is publicly available on the company's website [1] Group 2 - Tenaris is a leading global supplier of steel tubes and related services for the energy industry and certain other industrial applications [2]

Core Viewpoint - Tenaris S.A. has decided to terminate the second tranche of its Share Buyback Program effective March 3, 2026, due to market volatility and potential financial implications [1][3]. Group 1: Share Buyback Program Details - The second tranche of the Share Buyback Program was initially announced on May 27, 2025, with a total value of USD 600 million [2]. - This tranche commenced on November 3, 2025, and was scheduled to conclude by April 30, 2026 [2]. - As of the announcement, Tenaris has repurchased 29,295,219 ordinary shares at an aggregate cost of approximately USD 583.6 million, nearing the completion of its targeted repurchases [2]. Group 2: Rationale for Termination - The decision to terminate the buyback program was influenced by high market volatility, which could lead to significant additional payouts to the counterparty under the existing buyback agreement [3]. - The termination was executed following the expiration of the blackout period related to the company's annual earnings release on February 20, 2026 [3]. Group 3: Future Considerations - The board of directors of Tenaris will evaluate the possibility of pursuing additional buyback programs in the future [4].

Core Viewpoint - Tenaris S.A. has announced significant developments regarding its share buyback program and the actions of its controlling shareholders, indicating ongoing strategic management of its equity structure [1][2]. Share Buyback Program - As of December 17, 2025, Tenaris has repurchased ordinary shares amounting to 5.07% of its voting rights, which will be held in treasury and subsequently cancelled [1]. - The share buyback transactions are reported in compliance with Market Abuse Regulation [1]. Shareholder Actions - On December 17, 2025, San Faustin S.A. and Techint Holdings S.à r.l. filed an amendment to their beneficial ownership report, indicating that Techint Holdings sold 2,600,000 Tenaris ordinary shares between December 9 and December 12, 2025 [2]. - Techint Holdings has entered into a non-discretionary accelerated share disposal agreement to sell up to 21,000,000 ordinary shares of Tenaris from December 15, 2025, to May 19, 2026 [2]. - The sales under the accelerated share disposal program will be conducted independently by a European financial institution, ensuring compliance with applicable regulations [2]. Future Amendments - The Reporting Persons may amend their beneficial ownership report as required, and such amendments will be publicly accessible through the SEC's EDGAR database [3][4].

Group 1 - Tenaris S.A. announced a USD 1.2 billion Share Buyback Program, with the second tranche covering up to USD 600 million starting on November 3, 2025, and ending by April 30, 2026 [1][2] - The buyback will be executed by a primary financial institution independently, adhering to applicable regulations, including the Market Abuse Regulation [2] - Shares purchased under the Program will be cancelled in due course, authorized by the shareholders' meeting held on May 6, 2025 [3] Group 2 - Tenaris is recognized as a leading global supplier of steel tubes and related services for the energy industry and other industrial applications [5]

Group 1 - Tenaris S.A. has completed the first tranche of its USD1.2 billion Share Buyback Program, amounting to USD600 million [1][2] - During this tranche, Tenaris purchased 33,059,955 ordinary shares, which is 3.08% of its total issued share capital, for approximately €516,588,880 [2] - The shares acquired in this tranche will be held in treasury and Tenaris plans to cancel all treasury shares purchased under the Program in the future [2] Group 2 - Tenaris is recognized as a leading global supplier of steel tubes and related services for the energy industry and other industrial applications [5]

Core Points - Tenaris S.A. announced that its controlling shareholders, San Faustin S.A. and Techint Holdings S.à r.l., filed an amendment to their Schedule 13D with the SEC regarding their ownership stake in Tenaris [1] - The board of directors of San Faustin authorized Techint Holdings to sell a portion of its ordinary shares in Tenaris, ensuring that their ownership does not fall below 67% of the total outstanding shares [1] - The timing, amount, and manner of any potential sales will depend on market conditions, and there is no guarantee that any sales will occur [1] - The Reporting Persons do not currently plan to reduce their ownership below 67% but may buy or sell additional shares depending on market conditions [1] Company Overview - Tenaris is a leading global supplier of steel tubes and related services for the energy industry and other industrial applications [3]

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]

Group 1 - Tenaris S.A. announced a share buyback program of up to $1.2 billion, representing approximately 74 million shares or 6.9% of its outstanding shares [1] - The buyback program is driven by significant cash flow generation and a strong balance sheet, with a maximum limit of 10% of the company's shares [2] - The program is expected to launch in June 2025 and will be executed through a primary financial institution [2] Group 2 - The buybacks may be paused or ceased at any time, subject to compliance with applicable laws and regulations [3] - Updates on the buyback program will be provided via press releases and on the Investors section of Tenaris's corporate website [3] - The buybacks will be conducted in compliance with the Market Abuse Regulation and other relevant regulations [3] Group 3 - Tenaris is a leading global supplier of steel tubes and related services for the energy industry and other industrial applications [5]