Tessenderlo Group nv

Transaction in Own Shares • Nov 3, 2025

PRESS RELEASE

Regulated information1 November 3, 2025, 5:40 pm CET

TESSENDERLO GROUP: UPDATE REPURCHASE OF SHARES

With reference to Article 7:215 § 1 of the Companies and Associations Code and Article 8:4 of the Royal Decree of April 29, 2019, implementing the Companies and Associations Code, and as authorized by the Extraordinary General Meeting of Shareholders on May 10, 2022, Tessenderlo Group approved a new share repurchase program on May 12, 2025 for the repurchase of a maximum of 1,050,000 shares of the company for a total amount not exceeding 31,290,000 EUR. For more information regarding this share repurchase program, please refer to the press release published on May 14, 2025, accessible on our corporate website www.tessenderlo.com.

Between October 27 and October 31, 2025, Tessenderlo Group acquired 25,400 of its own shares at an average price of 26.26 EUR per share, for a total amount of 666,882.42 EUR. As a result of the repurchase transactions, the company holds 863,313 of its own shares in total, or 1.44% of the total number of issued shares as of November 3, 2025.

Overview of purchases, by day:

Date	Number of shares repurchased	Average share price (in EUR)	Minimum share price (in EUR)	Maximum share price (in EUR)	Total cost (in EUR)
Transactions on regulated market
October 27, 2025	5,000	26.58	26.40	26.85	132,880.50
October 28, 2025	5,000	26.26	26.15	26.40	131,279.50
October 29, 2025	5,000	26.26	26.05	26.45	131,297.50
October 30, 2025	5,200	26.11	25.85	26.20	135,769.40
October 3, 2025	5,200	26.09	25.85	26.20	135,655.52
TOTAL	25,400	26.26	25.85	26.85	666,882.42

An overview of the share repurchases is provided on our website (www.tessenderlo.com) at https://www.tessenderlo.com/en/investor-relations/information-shareholders/repurchase-shares.

¹ The information presented includes regulated information as defined in the Royal Decree of November 14, 2007, on the obligations of issuers of financial instruments admitted to trading on a regulated market.

About Tessenderlo Group

Tessenderlo Group is an industrial group that focuses on agriculture, valorizing bio-residuals, machinery, mechanical engineering, electronics, energy, and providing industrial solutions with a focus on water. With its headquarters in Belgium, the group is active in over 100 countries and it has a global team of more than 7,000 employees. Its belief that "Every Molecule Counts" is at the heart of the strategy of the group: Tessenderlo Group continually strives to valorize its products and processes to the maximum and to add value to everything it does. In 2024, Tessenderlo Group recorded a consolidated revenue of 2.6 billion EUR. Tessenderlo Group is listed on Euronext Brussels and is part of the Next 150 and BEL Mid indices. Financial News wires: Bloomberg: TESB BB - Reuters: TESB.BR - Datastream: B:Tes. For more information about Tessenderlo Group, its people, its brands, and its results, please visit www.tessenderlo.com.

CFO – Investor Relations

Miguel de Potter +32 2 887 09 58 ir@tessenderlo.com

This press release is available in Dutch and English on the website www.tessenderlo.com.