IIROC; Resumption: Chieftain Metals Inc.; Sierra Wireless, Inc.

| Source: Investment Industry Regulatory Organization of Canada (IIROC) Investment Industry Regulatory Organization of Canada (IIROC)

TORONTO, ONTARIO--(Marketwire - May 5, 2011) -

Company / CompagnieChieftain Metals Inc. Sierra Wireless, Inc.
TSX Symbol / SymboleCFBSW
Resumption / RepriseMarket OpenMarket Open

Contact Information:

Investment Industry Regulatory Organization of Canada-IIROC
416-646-7299
inquiries@iiroc.ca
www.iiroc.ca