Tenaris S.A.

Investor Presentation • Oct 4, 2022

Tenaris Investor Presentation September 30, 2022.

On September 30, 2022, Paolo Rocca, Chairman and Chief Executive Officer of Tenaris S.A., together with Germán Curá (Board member and Vice Chairman), Guillermo Vogel (Board member and Vice Chairman), Alicia Móndolo (Chief Financial Officer), Gabriel Podskubka (President Eastern Hemisphere), Luca Zanotti (President USA) and Giovanni Sardagna (Investor Relations Officer), gave an investors presentation at the New York Stock Exchange, at which they discussed, among other matters, the current business outlook for the Company.

The audio of the presentation and the accompanying written materials are available on the Tenaris Investor Relations website at: https://ir.tenaris.com/static-files/05cd4484-f612-48ce-b189-3cceaa6d3d62 and https://ir.tenaris.com/static-files/9aec1608-7437-434f-affc-7f8274a1e6b6.

Cautionary Statement Regarding Forward-Looking Statements

The audio of the presentation and the accompanying written materials referred to above contains "forward-looking statements." Forward-looking statements are based on management's current views and assumptions and involve known and unknown risks that could cause actual results, performance or events to differ materially from those expressed or implied by those statements. These statements include information regarding management strategy, investment plans, development and growth of the steel pipe and oil and gas industries, trends and other prospective data, including trends regarding the development of raw material costs and the levels of investment in oil and gas drilling worldwide and general economic conditions in the countries where Tenaris operates and sells its products and services. By their nature, certain disclosures relating to these and other risks are only estimates and could be materially different from what actually occurs in the future. As a result, actual future gains or losses that may affect our financial condition and results of operations could differ materially from those that have been estimated. You should not place undue reliance on the forward-looking statements, which speak only as of the date of this presentation. Except as required by law, we are not under any obligation, and expressly disclaim any obligation to, update or alter any forward-looking statements, whether as a result of new information, future events or otherwise.

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