Tenaris S.A.

Director's Dealing • Nov 29, 2022

Giovanni Sardagna Tenaris 1-888-300-5432 www.tenaris.com

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

Luxembourg, November 28, 2022 –Tenaris S.A. (NYSE and Mexico: TS and EXM Italy: TEN) announces that, in compliance with Regulation (EU) No 596/2014 on market abuse and applicable Luxembourg laws and regulations, the company has received a notification of a securities transaction from a person discharging managerial responsibilities (as defined in such Regulation). The information on reported transactions is publicly available in the section of Share capital and votes/Share transactions of Tenaris's website at: https://www.tenaris.com/en/sustainability/governance-and-ethics/.

In addition, the notice received by Tenaris has been filed with the Commission de Surveillance du Secteur Financier and can be downloaded from https://www.bourse.lu/oam-search.

Tenaris is a leading global supplier of steel tubes and related services for the world's energy industry and certain other industrial applications.