Primero to Release Second Quarter 2015 Results on August 5, 2015

TORONTO, ON--(Marketwired - July 02, 2015) - Primero Mining Corp. ("Primero" or the "Company") (TSX: P) (NYSE: PPP) announced today that it plans to release its second quarter 2015 operating and financial results before the market opens on Wednesday, August 5, 2015. A conference call will also be held on the same day at 10:00 am ET to discuss second quarter operating and financial results.

Participants may join the call by dialing North America toll free 1-888-789-9572 or 416-695-7806 for calls outside Canada and the U.S., and entering the participant passcode 4302651.

A live and archived webcast of the conference call will also be available at www.primeromining.com under the News and Events section or by clicking here: http://www.gowebcasting.com/6387.

A recorded playback of the second quarter 2015 results call will be available until November 2, 2015 by dialing 1-800-408-3053 or 905-694-9451 and entering the call back passcode 4302651.

About Primero

Primero Mining Corp. is a Canadian-based precious metals producer that owns 100% of the San Dimas gold-silver mine and the Cerro del Gallo gold-silver-copper development project in Mexico and 100% of the Black Fox mine and adjoining properties in the Township of Black River‐Matheson near Timmins, Ontario, Canada. Primero offers immediate exposure to un-hedged, below average cash cost gold production with a substantial resource base in politically stable jurisdictions. The Company is focused on becoming a leading intermediate gold producer by building a portfolio of high quality, low cost precious metals assets in the Americas.

Primero's website is www.primeromining.com.

Attachment Available: http://www.marketwire.com/library/MwGo/2015/7/2/11G046532/PR11-15_Q2_Results_Date_Final-493648625748.pdf