Deceuninck : Important message to the shareholders 2020 04 17

Press Release

Friday 17 April 2020 at 18:00h CET

IMPORTANT NOTICE TO SHAREHOLDERS RE. TO THE PARTICIPATION TO THE EXTRAORDINARY GENERAL MEETING AND GENERAL MEETING OF 28TH APRIL 2020

The company considers the health of its shareholders, employees, directors and the public of crucial importance and cannot guarantee that it will be able to comply with the measures imposed due to the Covid-19 pandemic and which are in force at the time of the General Meetings on 28thApril. Therefore the board of directors has decided to hold the General Meetings behind closed doors on 28thApril 2020.

In accordance with the provisions of the Belgian Royal Decree n°4 (published on 9thApril 2020), shareholders can exercise their rights at the General Meetings of 28thApril 2020 by voting prior to General Meetings by means of a voting form or by giving a proxy with voting instructions to the Secretary of the Board (General Counsel).

The voting forms and new proxy forms are available on the company's website http://www.deceuninck.com/en/shareholder-meetings.aspx.It is recommended to send an e-mail with a scanned or photographed copy of the completed and signed voting forms or the completed and signed proxy forms as an attachment to [e-mail].

The voting forms and proxy must be received by the Company before or on 24thApril 2020 at midnight CEST at the latest.

Shareholders can exercise their right to ask questions at the General Meetings of 28thApril 2020 exclusively in writing. These questions must reach the company at the latest on 24thApril 2020. The company will publish the answers in writing on the company's website. The questions will be answered in writing only and will be published on company's website (http://www.deceuninck.com/en/shareholder- meetings.aspx) no later than 28thApril 2020, before the voting during the General Meetings.

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 15 vertically integrated manufacturing facilities, which together with 21 warehousing and distribution facilities 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 [phone] • [e-mail]

www.deceuninck.com