Tenaris S.A.

Transaction in Own Shares • Apr 5, 2024

Informazione Regolamentata n. 0602-14-2024	Data/Ora Inizio Diffusione 5 Aprile 2024 23:47:00		Euronext Milan
Societa'	:	TENARIS
Identificativo Informazione Regolamentata	:	188665
Utenza - Referente	:	TENARISN02 - Sardagna
Tipologia	:	2.4
Data/Ora Ricezione	:	5 Aprile 2024 23:47:00
Data/Ora Inizio Diffusione	:	5 Aprile 2024 23:47:00
Oggetto	:	Weekly Report (April 1, 2024 – April 5, 2024) on the Second Tranche of Tenaris Share Buyback Program
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Giovanni Sardagna Tenaris 1-888-300-5432 www.tenaris.com

Weekly Report (April 1, 2024 – April 5, 2024) on the Second Tranche of Tenaris Share Buyback Program

Luxembourg, April 5, 2024. - Tenaris S.A. (NYSE and Mexico: TS and EXM Italy: TEN) ("Tenaris") announced today that pursuant to its Second Tranche of the Share Buyback Program announced on February 25, 2024, covering up to \$300 million to be executed in the open market, it has repurchased the following ordinary shares from April 1 to (and including) April 5, 2024:

Date	Trading Venue	Shares Purchased	Weighted Average Price (EUR)	Purchases in EUR	Reference FX	Purchases in USD
02-abr-24	MTAA	10,000	18.4169	184,169	1.0765	198,258
03-abr-24	MTAA	10,000	18.5389	185,389	1.0823	200,647
04-abr-24	MTAA	10,000	18.6116	186,116	1.0868	202,271
05-abr-24	MTAA	10,000	18.4992	184,992	1.0817	200,106
		40,000	18.5167	740,666		801,281

From April 1, 2024 to (and including) April 5, 2024, the Company has purchased a total of 40,000 ordinary shares for a total consideration of €740,666, equivalent to USD801,281.

As of April 5, 2024, the Company held in treasury 29,856,152 ordinary shares (including 17,779,302 ordinary shares bought in the first tranche), equal to 2.53% of the total issued share capital.

Tenaris intends to cancel all shares purchased under the Program in due course.

Details of the above transactions, are available on Tenaris's corporate website under the Share Buyback Program Section https://ir.tenaris.com/share-buyback-program.

Some of the statements contained in this press release are "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 risks include but are not limited to risks arising from uncertainties as to future oil and gas prices and their impact on investment programs by oil and gas companies.

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