Osisko Development Corp. Announces an Initial Grant of Stock Options TSX Venture Exchange:ODV

MONTREAL, Dec. 23, 2020 (GLOBE NEWSWIRE) — Osisko Development Corp. (“Osisko Development” or the “Corporation”) (ODV: TSX-V) is pleased to announce that incentive stock options have been granted to officers, employees and consultants to purchase 1,199,100 common shares at a price of $7.62 per share for five years and the vesting terms are one third (1/3) two (2) years after the date of grant, one third (1/3) three (3) years after the date of grant and one third (1/3) four (4) years after the date of grant. These options have been granted in accordance with the Corporation’s Stock Option Plan.

About Osisko Development Corp.

Osisko Development Corp. is well-capitalized and uniquely positioned as a premier gold development company in North America to advance the Cariboo Gold Project and other Canadian and Mexican properties, with the objective of becoming the next mid-tier gold producer. The Cariboo Gold Project, located in central British Columbia, is Osisko Development’s flagship asset with measured and indicated resource of 21.44 Mt at 4.6 Au g/t for a total of 3.2 million ounces of gold and inferred resource of 21.69 Mt at 3.9 Au g/t for a total of 2.7 million ounces of gold. The considerable exploration potential at depth and along strike distinguishes the Cariboo Gold Project relative to other development assets as does the historically low, all-in discovery costs of US $19 per ounce. The Cariboo Gold Project is advancing through permitting as a 4,750 tonnes per day underground operation with a feasibility study on track for completion in the second half of 2021. Osisko Development’s project pipeline is complemented by potential near-term production targeted from the San Antonio gold project, located in Sonora Mexico and early exploration stage properties including the Coulon Project and James Bay Properties located in Québec as well as the Guerrero Properties located in Mexico.

Cautionary Note Regarding Forward-Looking Information

Certain statements contained in this news release may be deemed “forward‐looking statements” within the meaning of applicable Canadian securities laws. These forward‐looking statements, by their nature, require Osisko Development to make certain assumptions and necessarily involve known and unknown risks and uncertainties that could cause actual results to differ materially from those expressed or implied in these forward‐looking statements. Forward‐looking statements are not guarantees of performance. Words such as “may”, “will”, “would”, “could”, “expect”, “believe”, “plan”, “anticipate”, “intend”, “estimate”, “continue”, or the negative or comparable terminology, as well as terms usually used in the future and the conditional, are intended to identify forward‐looking statements. Information contained in forward‐looking statements, including with respect to the development and exploration potential of the Cariboo Gold Project and other Canadian and Mexican properties, Osisko Development becoming the next mid-tier gold producer and the timely completion and outcome of the Cariboo Gold Project feasibility study, is based upon certain material assumptions that were applied in drawing a conclusion or making a forecast or projection, including management’s perceptions of current market conditions, the future prospects of Osisko Development, historical trends, current conditions and expected future developments, as well as other considerations that are believed to be appropriate in the circumstances. Osisko Development considers its assumptions to be reasonable based on information currently available, but cautions the reader that their assumptions regarding future events, many of which are beyond the control of Osisko Development, may ultimately prove to be incorrect since they are subject to risks and uncertainties that affect Osisko Development, and its business.

For additional information with respect to these and other factors and assumptions underlying the forward‐looking statements made in this news release concerning Osisko Development, see the Filing Statement available electronically on SEDAR (www.sedar.com)under Osisko Development’s issuer profile. The forward‐looking statements set forth herein concerning Osisko Development reflect management’s expectations as at the date of this news release and are subject to change after such date. Osisko Development disclaims any intention or obligation to update or revise any forward-looking statements, whether as a result of new information, future events or otherwise, other than as required by law.

Neither the TSX-V nor its Regulation Services Provider (as that term is defined in the policies of the TSX-V) accepts responsibility for the adequacy or accuracy of this news release. No stock exchange, securities commission or other regulatory authority has approved or disapproved the information contained herein.