Osisko Development Announces Closings of Additional US$75 Million Aggregate Principal Amount of 4.125% Convertible Senior Notes Bringing Total Offering to US$300 Million

Additional Notes represent full exercise of Initial Purchasers’ Option from previously announced Offering and closing of non-brokered private placement notes with Double Zero CapitalOpportunistic capital raise with net proceeds expected to be used for the development of the Cariboo Gold Project and general corporate purposesA portion of net proceeds used to purchase cash-settled capped calls to offset potential economic dilution by effectively increasing the conversion premium to 100% (from 25%)