The acquisition had been announced in August (link opens in new tab).
MMM has approximately 2,000 employees and is one of the largest privately-owned engineering consultancies in Canada. WSP now has 8,500 employees in the country, bringing its global workforce to 34,000.
"I am delighted about this acquisition and that our two firms are joining forces," said David Ackert, president and chief executive officer of WSP in Canada. "The coming together of these two like-minded firms will enable us to pursue our growth strategy and strengthen our foundation across Canada by increasing our ability to deliver superior value to our clients, shareholders and employees."
MMM Chief Executive Officer Hugo Blasutta added: "We are pleased that our shareholders have expressed overwhelming support for this acquisition. On behalf of MMM's Board and management, I would like to thank them for their invaluable support throughout this process. As we join WSP, a firm with similar values to MMM and a complementary business model, we will have an opportunity to continue our journey of growth. We also look forward to providing additional value for our employees and clients through our enhanced expertise and expanded network.”