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Groupe Bruxelles Lambert SA

Transaction in Own Shares Sep 15, 2025

3955_pos_2025-09-15_6373ad0c-2308-45b1-98f7-7f8b848a125f.pdf

Transaction in Own Shares

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Transactions on GBL Shares

Disclosure of transaction on GBL shares from September 8, 2025, until September 12, 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 September 8, 2025 until September 12, 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 November 7, 2025) in the central order book of a regulated market or MTF: 73,865 GBL shares
Trade date Number of
shares
Average
price (EUR)
Lowest
price (EUR)
Highest
price (EUR)
Amount
(EUR)
Market
(MIC Code)
09/08/2025 1,963 75.70 75.50 75.90 148,601 CEUX
09/08/2025 1,900 75.77 75.65 75.90 143,967 TQEX
09/08/2025 5,766 75.71 75.50 75.90 436,528 XBRU
09/09/2025 2,947 75.88 75.70 76.05 223,627 CEUX
09/09/2025 758 75.98 75.75 76.05 57,590 TQEX
09/09/2025 6,877 75.92 75.70 76.25 522,111 XBRU
09/10/2025 5,301 75.86 75.45 76.25 402,134 CEUX
09/10/2025 1,914 75.84 75.55 76.25 145,163 TQEX
09/10/2025 9,916 75.83 75.45 76.30 751,897 XBRU
09/11/2025 4,859 75.93 75.85 76.10 368,936 CEUX
09/11/2025 1,936 75.96 75.80 76.05 147,054 TQEX
09/11/2025 9,728 75.92 75.70 76.10 738,549 XBRU
09/12/2025 5,625 76.01 75.80 76.20 427,551 CEUX
09/12/2025 1,854 76.03 75.85 76.20 140,955 TQEX
09/12/2025 12,521 76.02 75.80 76.20 951,883 XBRU
  • The liquidity agreement: 0 GBL share

Sales

GBL, directly and through its subsidiaries, sold during the period from September 8, 2025 until September 12, 2025 included, as part of:

  • The liquidity agreement: 0 GBL share

As of September 12, 2025, GBL holds directly and through its subsidiaries 11,070,421 GBL shares representing 8.3% of the issued capital and holds no shares under the liquidity agreement. On that date, 6.1% of the eighth 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 598.9 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 [email protected]om [email protected]

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 €14.4bn at the end of June 2025. As a leading and active investor in Europe, GBL focuses on long-term value creation with the support of a stable family shareholder base.

GBL aims to grow its diversified high-quality portfolio of listed, direct private and indirect private 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

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