July 12, 2007 11:47 ET

Canadian Trading and Quotation System Inc.-Warrant Extension-Calstar Oil & Gas Ltd. (CALS.W.B)

TORONTO, ONTARIO--(Marketwire - July 12, 2007) -

Bulletin 2007-0705

The Class B purchase warrants issued in conjunction with a Private Placement of Calstar Oil & Gas (previously Aspire Capital) were listed on September 19, 2006. The Company has been granted an exemption to extend the term of the warrants.

The Class B warrants have an exercise price of $0.25 and were to expire on August 20, 2007.

Pursuant to the exemption, the Class B Warrants will expire on September 28, 2007.

Each warrant is exercisable into one common share. The warrants contain standard anti-dilution provisions. Listing and disclosure documents for Calstar are available in the CNQ Issuer Disclosure Hall.

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