Groupe Bruxelles Lambert : Transactions on GBL shares from May 14, 2024 until May 17, 2024 (included)

May 21, 2024 - After 5:45pm CET

Regulated information

Delivering meaningful growth

Transactions on GBL Shares

Disclosure of transaction on GBL shares from May 14, 2024 until May 17, 2024 (included)

Implementation of the authorization of the Extraordinary General Shareholders' Meeting of April 28, 2020

Purchases

GBL, directly and through its subsidiaries, acquired during the period from May 14, 2024 until May 17, 2024 included, as part of:

• The share buyback program: 0 GBL share
• The share buyback program by an independent financial institution on the basis of a discretionary mandate (until August 2, 2024) in the central order book of a regulated market or MTF: 102,039 GBL shares

• The liquidity agreement: 0 GBL share

Regulated information of May 21, 2024 // Page 1 / 2 // For more information: www.gbl.com

Sales

GBL, directly and through its subsidiaries, sold during the period from May 14, 2024 until May 17, 2024 included, as part of:

• The liquidity agreement: 0 GBL share

As of May 17, 2024, GBL holds directly and through its subsidiaries 9,395,969 GBL shares representing 6.8% of the issued capital, and holds no shares under the liquidity agreement. On that date, 10.9% of the seventh share buyback program is executed1.

Following the decision of GBL to use the safe harbour2 regime for the on-the-market share buybacks in the context of a EUR 500 million envelope, the liquidity contract with an independent financial institution has been suspended for an indefinite period.

About Groupe Bruxelles Lambert

Groupe Bruxelles Lambert ("GBL") is an established investment holding company, with seventy years of stock exchange listing and a net asset value of €17.0bn at the end of March 2024. As a leading and active investor in Europe, GBL focuses on long-term value creation with the support of a stable family shareholder base. As a responsible company and investor, GBL perceives ESG factors as being inextricably linked to value creation.

GBL aims to grow its diversified high-quality portfolio of listed, private and alternative investments.

GBL is focused on delivering meaningful growth by providing attractive returns to its shareholders through a combination of growth in its net asset value per share, a sustainable dividend and share buybacks.

GBL is listed on Euronext Brussels (Ticker: GBLB BB; ISIN code: BE0003797140) and is included in the BEL20 index.

1. cf.http://www.gbl.com/en/transactions-gbl-shares
2. Provided for in Regulation (EU) No. 596/2014 of 16 April 2014 on market abuse and Delegated Regulation (EU) No. 2016/1052 of 8 March 2016 with regard to regulatory technical standards for the terms of buyback programs and stabilization measures.

Regulated information of May 21, 2024 // Page 2 / 2 // For more information: www.gbl.com