Deceuninck NV

Major Shareholding Notification • Jun 14, 2021

Press Release | Transparency declaration

Regulated Information - Notification according to the Act of 2 May 2007. Transparency declaration. Monday 14 June 2021 at 17:45h CET

Hooglede-Gits, Belgium, 14 June 2021 17.45h CET – Deceuninck NV (Euronext: DECB) announces it has received a transparency notification from Union Financière Boël NV, Société de Participations Industrielles NV, Mobilière et Immobilière du Centre NV and Sofina NV, stating that their combined holdings in Deceuninck have dropped below the 5% threshold on 8 June 2021.

Content of the notifications

Categories of notification	Results of the received form
Reason for notification	Acquisition or disposal of voting securities or voting rights
Notification by	A parent undertaking or a controlling person
Person(s) subject to the notification requirement	- Union Financière Boël NV - Société de Participations Industrielles NV - Mobilière et Immobilière du Centre NV - Sofina NV
Date on which the threshold is crossed	08/06/2021
Threshold that is crossed	5%
Denominator	137,925,108
Notified details	Previous notification: # voting rights: - Union Financière Boël NV : 0 - Société de Participations Industrielles NV : 0 - Mobilière et Immobilière du Centre NV : 0 - Sofina NV : 13,461,513 After the transaction: # voting rights: - Union Financière Boël NV : 0 - Société de Participations Industrielles NV : 0 - Mobilière et Immobilière du Centre NV : 0 - Sofina NV : 6,851,513 - Together : 6,851,513 After the transaction: % voting rights: - Union Financière Boël NV : 0% - Société de Participations Industrielles NV : 0% - Mobilière et Immobilière du Centre NV : 0% - Sofina NV : 4.97% - Together: 4.97%

Chain of controlled undertakings through which the holding is effectively held, if applicable

Sofina NV is controlled de jure by the consortium companies Union Financière Boël NV, Société de Participations Industrielles NV and Mobilière et Immobilière du Centre NV

Statutory thresholds

According to the Articles of Association of Deceuninck NV and according to article 18 of the Act of 2 May 2007 regarding the disclosure of important shareholdings, the thresholds for the disclosure of holdings have been established at 3%, subsequently at 5% and each multiple of 5%.

Notifications

Notifications should be transmitted both to Deceuninck NV and to the FSMA. The FSMA requires transmission of the notifications electronically via e-mail to trp.fin@fsma.be. Deceuninck recommends transmitting notifications per e-mail for the attention of ann.bataillie@deceuninck.com.

The abovementioned notifications will be published on the Investors pages of the website of Deceuninck NV (www.deceuninck.com) in the section Deceuninck Financial News and in the sections Deceuninck Transparency Declarations

Financial calendar

17 August 2021 Half year results 2021

End of press release

About Deceuninck

Founded in 1937, Deceuninck is a top 3 independent manufacturer of PVC and composite profiles for windows and doors. Headquartered in Hooglede-Gits (BE), Deceuninck is organized in 3 geographical segments: Europe, North America and Turkey & Emerging Markets. Deceuninck operates 18 vertically integrated manufacturing facilities, which together with 16 sales and distribution entities guarantee the necessary service and response time to Customers. Deceuninck strongly focuses on innovation, ecology and design. Deceuninck is listed on Euronext Brussels ("DECB").

Contact Deceuninck: Bert Castel • T +32 51 239 204 • bert.castel@deceuninck.com