SGAM Malakoff Humanis signed an agreement to acquire an unknown minority stake in Sienna AM France and Sienna Gestion from Groupe Bruxelles Lambert SA (ENXTBR:GBLB) on December 24, 2025. The sale also includes GBL's commitments (called and uncalled) in the funds managed by Sienna Gestion and Sienna Private Credit1 (?185m as of November 30, 2025).
The transaction is subject to approval by regulatory board / committee. The expected completion of the transaction is January 1, 2026 to June 30, 2026.
Centerview Partners LLC acted as financial advisor to Groupe Bruxelles Lambert SA.
SGAM Malakoff Humanis completed the acquisition of an unknown minority stake in Sienna AM France and Sienna Gestion from Groupe Bruxelles Lambert SA (ENXTBR:GBLB) on June 02, 2026.
Groupe Bruxelles Lambert SA is an investment holding company. The portfolio value (EUR 12.8 billion at the end of 2025) breaks down by type of assets as follows:
- listed assets (54,3%): including SGS (inspection, audit, testing and certification services ; No.1 worldwide), Pernod Ricard (production of spirits ; No. 1 worldwide), adidas (production and sales of sporting goods ; No.1 in Europe), and Imerys (mining extraction and production ; No. 1 worldwide);
- direct private assets (32,2%): including Affidea (pan-European provider of advanced diagnostics and outpatient services ; No.1 in Europe), Sanoptis (a European leader in ophthalmology services ; No. 2 in Europe) and Canyon (production and sales of sporting goods ; No.1 worldwide);
- indirect private assets (13%);
- other (0,5%).
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