Mitel Closes $91 Million Bought Deal Secondary Offering of Common Shares

May 28, 2014

Mitel Networks Corporation (Nasdaq:MITL) (TSX:MNW), a global leader in business communications, announced today that it has closed the bought deal secondary offering previously announced on May 13, 2014 (the "Offering").  Under the Offering, Arsenal Holdco I, S.a.r.l., Arsenal Holdco II, S.a.r.l., Kanata Research Park Corporation and Shen Capital Corporation (collectively, the "Selling Shareholders") sold 7,400,000 common shares of Mitel at a price of CDN$12.30 per share for total gross proceeds of $91,020,000. The Offering was underwritten by a syndicate of underwriters led by CIBC and Cormark Securities Inc.

Mitel did not receive any proceeds from the sale of the common shares by the Selling Shareholders.

Mitel's headquarters are located at 350 Legget Drive, Kanata, Ontario, Canada, K2K 2W7.

This news release does not constitute an offer to sell or a solicitation of an offer to buy any securities for sale in the United States or Canada.

About Mitel

A global market leader in business communications powering more than two billion business connections, Mitel helps businesses and service providers connect, collaborate and provide innovative services to their customers. Our innovation and communications experts serve more than 70 million business users in more than 100 countries. For more information, go to www.mitel.com and follow us on Twitter @Mitel.

Mitel is the registered trademark of Mitel Networks Corporation

All other trademarks are the property of their respective owners

Contact Information

Camille Beasley, Media

Tel: 469-212-0433

Email: camille.beasley@mitel.com

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