Tenaris S.A.

Transaction in Own Shares • Mar 1, 2024

Informazione Regolamentata n. 0602-6-2024		Data/Ora Inizio Diffusione 1 Marzo 2024 23:11:47	Euronext Milan
Societa'	:	TENARIS
Identificativo Informazione Regolamentata	:	186805
Utenza - Referente	:	TENARISN02 - Sardagna
Tipologia	:	2.4
Data/Ora Ricezione	:	1 Marzo 2024 23:11:47
Data/Ora Inizio Diffusione	:	1 Marzo 2024 23:11:47
Oggetto	:	Weekly Report (February 26, 2024 - March 1, 2024) on the Second Tranche of Tenaris Share Buyback Program
Testo del comunicato

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

Weekly Report (February 26, 2024 - March 1, 2024) on the Second Tranche of Tenaris Share Buyback Program

Luxembourg, March 1, 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 February 26 to (and including) March 1, 2024:

Date	Trading Venue	Shares Purchased	Weighted Average Price	Purchases in EUR	Reference FX	Purchases in USD
26-feb-24	MTAA	751,999	16.5735	12,463,255	1.0851	13,523,878
26-feb-24	CEUX	280,000	16.5702	4,639,656	1.0851	5,034,491
26-feb-24	TQEX	38,000	16.5726	629,759	1.0851	683,351
27-feb-24	MTAA	640,232	16.6683	10,671,579	1.0848	11,577,063
27-feb-24	CEUX	295,800	16.6684	4,930,513	1.0848	5,348,867
27-feb-24	TQEX	39,839	16.6610	663,758	1.0848	720,077
28-feb-24	MTAA	772,335	16.6300	12,843,931	1.0834	13,915,115
28-feb-24	CEUX	299,000	16.6291	4,972,101	1.0834	5,386,774
28-feb-24	TQEX	40,500	16.6218	673,183	1.0834	729,326
29-feb-24	MTAA	584,670	16.5135	9,654,948	1.0822	10,448,585
29-feb-24	CEUX	307,000	16.5126	5,069,368	1.0822	5,486,070
29-feb-24	TQEX	41,512	16.5183	685,708	1.0822	742,073
01-mar-24	MTAA	586,249	16.3802	9,602,876	1.0836	10,405,676
01-mar-24	CEUX	245,074	16.3807	4,014,484	1.0836	4,350,095
01-mar-24	TQEX	43,000	16.3831	704,473	1.0836	763,367
		4,965,210	16.5591	82,219,591		89,114,808

From February 26, 2024 to (and including) March 1, 2024, the Company has purchased a total of 4,965,210 ordinary shares for a total consideration of €82,219,591, equivalent to USD89,114,808.

As of March 1, 2024, the Company held in treasury 22,744,512 ordinary shares (including 17,779,302 ordinary shares bought in the first tranche), equal to 1.93% 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.