Primero to Release Second Quarter 2017 Results on August 10, 2017

TORONTO, ON--(Marketwired - July 11, 2017) - Primero Mining Corp. ("Primero" or the "Company") (TSX: P) (NYSE: PPP) announced today that it plans to release its second quarter 2017 operating and financial results before the market opens on Thursday, August 10, 2017. 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 1-800-806-5484 or 416-340-2217 for calls outside Canada and the U.S., and entering the participant passcode 7470837.

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/8564.

A recorded playback of the second quarter 2017 results call will be available until November 26, 2017 by dialing 1-800-408-3053 or 905-694-9451 and entering the call back passcode 4072756.

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/2017/7/11/11G142530/PR15-17_Q2_Results_Date_Final-6bb5df9d527ebafb8583cead9da27055.pdf