DISCLOSURE OF TRADING IN OWN SHARES

FROM 06/29/2026 TO 06/30/2026

Meudon (France), on July 6th, 2026

Share buyback program (ISIN Code:FR0013506730 implemented in accordance with the authorization given by the Shareholders' General Meeting of Vallourec SA LEI:969500P2Q1B47H4MCJ34 on May 21, 2026 (twelfth resolution).

 Day of the transaction Total daily volume (number of shares)Daily weighted average purchase price of the shares (€)Market Code 06/29/202695 72720,6284CEUX06/29/2026173 96520,6276XPAR06/29/202617 41320,6298AQEU06/29/202613 19620,6342TQEX06/30/2026174 71620,5194XPAR06/30/202694 08520,4865CEUX06/30/202613 39120,4902TQEX06/30/202617 20620,4936AQEU 599 69920,5674 

About Vallourec

Vallourec is a world leader in premium tubular solutions for the energy markets and for demanding industrial applications such as oil & gas wells in harsh environments, new generation power plants, challenging architectural projects, and high-performance mechanical equipment. Vallourec’s pioneering spirit and cutting edge R&D open new technological frontiers. With close to 13,000 dedicated and passionate employees in more than 20 countries, Vallourec works hand-in-hand with its customers to offer more than just tubes:Vallourec delivers innovative, safe, competitive and smart tubular solutions, to make every project possible.

Listed on Euronext in Paris (ISIN code:FR0013506730, Ticker VK), Vallourec is part of the CAC Mid 60, SBF 120 and Next 150 indices and is eligible for Deferred Settlement Service.

In the United States, Vallourec has established a sponsored Level 1 American Depositary Receipt (ADR) program (ISIN code:US92023R4074, Ticker:VLOWY. Parity between ADR and a Vallourec ordinary share has been set at 5:1.

For further information, please contact:

Investor relations Connor LynaghTel: +1 (713) 409-7842connor.lynagh@vallourec.comPress relations Taddeo - Romain Grière Tel: +33 (0) 7 86 53 17 29 romain.griere@taddeo.fr  Individual shareholdersToll Free Number (from France): 0 805 65 10 10 actionnaires@vallourec.com Nicolas EscoulanTel: +33 (0)6 42 19 14 74nicolas.escoulan@taddeo.fr

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