Tenaris S.A.

Transaction in Own Shares • Mar 29, 2024

Informazione Regolamentata n. 0602-13-2024	Data/Ora Inizio Diffusione 29 Marzo 2024 00:10:31		Euronext Milan
Societa'	:	TENARIS
Identificativo Informazione Regolamentata	:	188258
Utenza - Referente	:	TENARISN02 - Sardagna
Tipologia	:	2.4
Data/Ora Ricezione	:	29 Marzo 2024 00:10:31
Data/Ora Inizio Diffusione	:	29 Marzo 2024 00:10:31
Oggetto	:	Weekly Report (March 25, 2024 - March 28, 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 (March 25, 2024 - March 28, 2024) on the Second Tranche of Tenaris Share Buyback Program

Luxembourg, March 28, 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 March 25 to (and including) March 28, 2024:

Date	Trading Venue	Shares Purchased	Weighted Average Price (EUR)	Purchases in EUR	Reference FX	Purchases in USD
25-mar-24	MTAA	10,000	18.2418	182,418	1.0838	197,705
26-mar-24	MTAA	9,862	18.3562	181,029	1.0827	196,000
27-mar-24	MTAA	9,701	18.3544	178,056	1.0820	192,657
28-mar-24	MTAA	10,000	18.3150	183,150	1.0803	197,848
		39,563	18.3164	724,653		784,209

From March 25, 2024 to (and including) March 28, 2024, the Company has purchased a total of 39,563 ordinary shares for a total consideration of €724,653, equivalent to USD784,209.

As of March 28, 2024, the Company held in treasury 29,816,152 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.