Groupe Bruxelles Lambert SA

Transaction in Own Shares • Jan 27, 2025

Transactions on GBL Shares

Disclosure of transaction on GBL shares from January 20, 2025, untilJanuary 24, 2025 (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 January 20, 2025 until January 24, 2025 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 March 14, 2025) in the central order book of a regulated market or MTF: 130,561 GBL shares

Trade date	Number of shares	Average price (EUR)	Lowest price (EUR)	Highest price (EUR)	Amount (EUR)	Market (MIC Code)
01/20/2025	981	66.14	65.80	66.40	64,885	AQEU
01/20/2025	6,804	66.02	65.80	66.40	449,227	CEUX
01/20/2025	2,009	66.01	65.80	66.40	132,610	TQEX
01/20/2025	14,695	66.13	65.80	66.40	971,733	XBRU
01/21/2025	1,057	66.15	66.00	66.20	69,918	AQEU
01/21/2025	7,946	66.13	66.00	66.20	525,457	CEUX
01/21/2025	2,077	66.12	66.05	66.20	137,323	TQEX
01/21/2025	14,468	66.15	66.05	66.20	957,064	XBRU
01/22/2025	810	66.55	66.45	66.65	53,907	AQEU
01/22/2025	6,215	66.54	66.35	66.75	413,564	CEUX
01/22/2025	2,246	66.53	66.35	66.60	149,422	TQEX
01/22/2025	15,619	66.54	66.35	66.75	1,039,251	XBRU
01/23/2025	1,138	66.41	66.15	66.55	75,577	AQEU
01/23/2025	8,440	66.40	66.10	66.60	560,451	CEUX
01/23/2025	2,342	66.39	66.10	66.60	155,487	TQEX
01/23/2025	17,681	66.44	66.10	66.60	1,174,796	XBRU
01/24/2025	776	66.40	66.10	66.90	51,528	AQEU
01/24/2025	6,941	66.54	66.20	66.95	461,887	CEUX
01/24/2025	1,916	66.46	66.10	66.90	127,330	TQEX
01/24/2025	16,400	66.38	66.05	66.95	1,088,635	XBRU

• The liquidity agreement: 0 GBL share

Sales

GBL, directly and through its subsidiaries, sold during the period from January 20, 2025 until January 24, 2025 included, as part of:

• The liquidity agreement: 0 GBL share

As of January 24, 2025, GBL holds directly and through its subsidiaries 13,360,918 GBL shares representing 9.7% of the issued capital and holds no shares under the liquidity agreement. On that date, 64.5% 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:

Tel: +32 2 289 17 72 Tel: +32 2 289 17 64 xlikin@gbl.com adonohoe@gbl.com

Xavier Likin Alison Donohoe

Chief Financial Officer Head of Investor Relations

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 €16.3bn at the end of September 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