Klondex Mines Ltd.

Klondex Announces New Open Pit Mineral Resource Estimate at Fire Creek; Total Indicated of 1.1M AuEq Oz and Inferred of 1.1M AuEq Oz

Klondex Encounters High-Grade Mineralization at Hatter Graben; Midas Mill Recovery of Hollister Ore Improving

Klondex Provides Exploration Update at Fire Creek; Surface Drilling Discovers High Grade Mineralization, Including 8.25 opt Au over 1.7 ft; Underground Drilling Continues to Extend Near Mine High Grade Veins

Klondex Reports Third Quarter 2017 Financial Results; Reiterates Full-Year Total Company Production Guidance of 213,000 - 230,000 GEOs at Production Cash Cost of $675 - $700 per GEO Sold

Klondex Reports Third Quarter Operating Results; Reiterates Full-Year Total Company Production Guidance of 213,000 - 230,000 GEOs

Klondex Announces Donation of Lands to Western Shoshone

Klondex Provides Underground Drill Update at Fire Creek; Continues to Extend High Grade Vein System Along Strike

Klondex Announces the Continuation of High-Grade Mineralization at Midas

Klondex Reports Strong Second Quarter 2017 Financial Results; Improves 2017 Outlook with Increased Production at Lower Costs

Klondex Files Technical Report Relating to the Hollister Mine

Klondex Announces High Grade Exploration Results at True North; Intercepts 5.78 opt Au over 3.7 ft (198.1 g/t over 1.1 m)

Klondex Reports Record Second Quarter Operating Results Producing 66,629 GEOs, An Increase of 94% from the First Quarter

Klondex Announces Initial Mineral Reserve Estimate at Hollister

Klondex Set to Join Russell 3000(R) Index

Klondex Announces Initial Mineral Resource Estimate at Hollister; Measured & Indicated of ~217k AuEq oz, Inferred of ~78k AuEq oz

Paul Harris Spotlight

June 12, 2017

How was your experience at the International Metal Writers Conference? Very good. I met a lot of very good people and companies in a packed two days. I always get a lot out of these events. Our conference video’s will be coming out this week, so any investors that missed your talk will be...