Groupe Bruxelles Lambert : Transactions on GBL shares from May 27, 2024 until May 31, 2024 (included)

June 3, 2024 - After 5:45pm CET

Regulated information

Delivering meaningful growth

Transactions on GBL Shares

Disclosure of transaction on GBL shares from May 27, 2024 until May 31, 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 27, 2024 until May 31, 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: 132,316 GBL shares

Trade date	Number of	Average	Lowest	Highest	Amount	Negotiation method / market
shares	price (EUR)	price (EUR) price (EUR)	(EUR)
						Stock Exchange
05/27/2024	21,778	70.94	70.50	71.15	1,545,001	Acquis, CBOE, Turquoise,
						Euronext
						Stock Exchange
05/28/2024	13,522	70.78	70.35	71.40	957,057	Acquis, CBOE, Turquoise,
						Euronext
						Stock Exchange
05/29/2024	33,639	69.31	69.00	70.20	2,331,650	Acquis, CBOE, Turquoise,
						Euronext
						Stock Exchange
05/30/2024	28,000	69.68	68.70	69.95	1,950,967	Acquis, CBOE, Turquoise,
						Euronext
						Stock Exchange
05/31/2024	35,377	70.13	69.70	70.60	2,481,024	Acquis, CBOE, Turquoise,
						Euronext
Total	132,316	70.03			9,265,702

• The liquidity agreement: 0 GBL share

Regulated information of June 3, 2024 // Page 1 / 2 // For more information: www.gbl.com

Sales

GBL, directly and through its subsidiaries, sold during the period from May 27, 2024 until May 31, 2024 included, as part of:

• The liquidity agreement: 0 GBL share

As of May 31, 2024, GBL holds directly and through its subsidiaries 9,669,606 GBL shares representing 7.0% of the issued capital, and holds no shares under the liquidity agreement. On that date, 14.8% of the seventh share buyback program is executed1.

Following GBL's decision 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.

For more information, please contact:
Xavier Likin	Alison Donohoe
Chief Financial Officer	Head of Investor Relations
Tel: [phone]	Tel: [phone]
[e-mail]	[e-mail]

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 June 3, 2024 // Page 2 / 2 // For more information: www.gbl.com