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Securities Transactions by Persons Discharging Managerial Responsibilities under Regulation (EU) No 596/2014 on market abuse

LUXEMBOURG, March 05, 2026 (GLOBE NEWSWIRE) -- In compliance with Regulation (EU) No 596/2014 on market abuse and applicable Luxembourg laws and regulations, Tenaris S.A. (NYSE and Mexico: TS and EXM Italy: TEN) announces that it has received a notification of a securities transaction from a person discharging managerial responsibilities (as defined in such Regulation). As required by such laws and regulations, such notification has been filed with the Luxembourg Commission de Surveillance du Secteur Financier and the Luxembourg Stock Exchange; and can be accessed through the following link: https://www.bourse.lu/oam-search

Tenaris Terminates Second Tranche of its USD 1.2 Billion Share Buyback Program

LUXEMBOURG, Feb. 23, 2026 (GLOBE NEWSWIRE) -- Tenaris S.A. (NYSE and Mexico: TS and EXM Italy: TEN) (“Tenaris”) announced today that it has decided to terminate, effective on March 3, 2026, the second tranche of its Share Buyback Program announced on May 27, 2025 (the “Program”).

Tenaris Announces 2025 Fourth Quarter and Annual Results

The financial and operational information contained in this press release is based on audited consolidated financial statements presented in U.S. dollars and prepared in accordance with International Financial Reporting Standards as issued by the International Accounting Standard Board and adopted by the European Union, or IFRS. Additionally, this press release includes non-IFRS alternative performance measures i.e., EBITDA, Free Cash Flow, Net cash / debt and Operating working capital days. See exhibit I for more details on these alternative performance measures.

Repurchased own ordinary shares reached 5% of Tenaris's voting rights; Tenaris's controlling shareholder files amendment to Schedule 13D

LUXEMBOURG, Dec. 17, 2025 (GLOBE NEWSWIRE) -- Pursuant to applicable Luxembourg Transparency Law requirements, Tenaris S.A. (NYSE and Mexico: TS and EXM Italy: TEN) (“Tenaris” or the “Company”) announces that on December 17, 2025, the proportion of own ordinary shares acquired under its share buyback program and currently held in treasury has reached 5.07% of Tenaris's voting rights. Ordinary shares repurchased under such program are being held in treasury (with their voting rights suspended) and will be cancelled in due course. Reporting of share buyback transactions in accordance with Market Abuse Regulation is available at: https://ir.tenaris.com/share-buyback-program.