Groupe Bruxelles Lambert SA

Transaction in Own Shares • Nov 25, 2024

Transactions on GBL Shares

Disclosure of transaction on GBL shares from November 18, 2024 until November 22, 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 November 18, 2024 until November 22, 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 March 14, 2025) in the central order book of a regulated market or MTF: 122,534 GBL shares

Trade date	Number of shares	Average price (EUR)	Lowest price (EUR)	Highest price (EUR)	Amount (EUR)	Market (MIC Code)
11/18/2024	1,039	64.86	65.05	64.60	67,388	AQEU
11/18/2024	4,636	64.80	65.00	64.55	300,406	CEUX
11/18/2024	1,439	64.83	65.00	64.55	93,290	TQEX
11/18/2024	8,963	64.82	65.00	64.55	581,007	XBRU
11/19/2024	966	64.59	65.20	64.20	62,397	AQEU
11/19/2024	7,305	64.54	65.25	64.10	471,495	CEUX
11/19/2024	1,471	64.47	65.20	64.10	94,841	TQEX
11/19/2024	17,802	64.54	65.30	64.10	1,148,902	XBRU
11/20/2024	983	65.00	65.35	64.70	63,900	AQEU
11/20/2024	7,462	64.96	65.40	64.70	484,723	CEUX
11/20/2024	1,984	64.94	65.35	64.65	128,849	TQEX
11/20/2024	11,565	64.98	65.40	64.65	751,519	XBRU
11/21/2024	1,043	64.61	64.75	64.40	67,390	AQEU
11/21/2024	7,047	64.63	64.85	64.40	455,453	CEUX
11/21/2024	1,963	64.64	64.80	64.40	126,883	TQEX
11/21/2024	17,992	64.60	64.85	64.45	1,162,339	XBRU
11/22/2024	1,160	65.10	65.40	64.75	75,514	AQEU
11/22/2024	7,725	64.97	65.30	64.40	501,911	CEUX
11/22/2024	1,763	65.07	65.40	64.40	114,712	TQEX
11/22/2024	18,226	65.09	65.40	64.40	1,186,290	XBRU

• The liquidity agreement: 0 GBL share

Sales

GBL, directly and through its subsidiaries, sold during the period from November 18, 2024 until November 22, 2024 included, as part of:

• The liquidity agreement: 0 GBL share

As of November 22, 2024, GBL holds directly and through its subsidiaries 12,336,748 GBL shares representing 8.9% of the issued capital and holds no shares under the liquidity agreement. On that date, 51.1% 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