WSP provides regulatory update on its proposed combination with Arcadis

This is a public announcement by WSP Global Inc. (“ WSP “). This press release is issued pursuant to Section 7 paragraph 1 sub a of the Dutch Decree on Public Takeover Bids (Besluit openbare biedingen Wft) in connection with the intended public offer by WSP for the entire issued and outstanding share capital of Arcadis N.V. (“ Arcadis ”). This press release does not constitute an offer, or any solicitation of any offer, to buy or subscribe for any securities. Any offer will be made only by means of an offer memorandum (the “ Offer Memorandum “) approved by the Dutch Authority for the Financial Markets (Autoriteit Financiële Markten, the “ AFM ”). This press release is not for release, publication or distribution, in whole or in part, in, into or from, directly or indirectly, in any jurisdiction in which such release, publication or distribution would be unlawful.

MONTREAL, Aug. 20, 2026 (GLOBE NEWSWIRE) — WSP Global Inc., one of the world’s leading engineering, science and infrastructure solutions firms, today reconfirms, following its announcement on July 24, 2026, its intention to pursue a combination with Arcadis through a friendly, recommended public offer for the entire issued and outstanding share capital of Arcadis. This press release constitutes the mandatory four-week update required by the Dutch public offer rules.

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WSP remains convinced that a combination of Arcadis and WSP represents a highly compelling opportunity for both companies and their stakeholders. The proposed combination would create significantly enhanced scale, increased diversification and resilience, broader capabilities across verticals, and an expanded and more balanced geographic platform across North America, Europe and Australia that is uniquely equipped to invest for growth in talent and digital innovation and to meet continuously evolving and increasingly complex client needs through deeper, more efficient and more comprehensive solutions, to the benefit of all stakeholders, including employees, customers, partners, shareholders and communities. Further, the industrial logic of a combination has only strengthened as clients increasingly seek partners with greater scale, broader technical capabilities and global delivery platforms.

Despite multiple invitations over the past several months, the Arcadis boards have not yet engaged with WSP regarding its proposals. WSP continues to seek constructive engagement to determine whether a mutually agreeable transaction can be achieved.