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Osisko Development Announces Non-Brokered Private Placement and Proposed NYSE Listing

Financings Listings & Exchange

NOT FOR DISTRIBUTION TO U.S. NEWS WIRE SERVICES OR FOR DISSEMINATION IN THE UNITED STATES

OSISKO DEVELOPMENT ANNOUNCES

NON-BROKERED PRIVATE PLACEMENT AND PROPOSED NYSE LISTING

Montréal, February 2, 2022 – Osisko Development Corp. ("Osisko Development") (ODV: TSX-V)

is pleased to announce that it has received expressions of interest in connection with a non-brokered

private placement of up to 2,857,142 subscription receipts of Osisko Development ("Subscription

Receipts") at a price of US$ 3.50 per Subscription Receipt for aggregate gross proceeds of up to

US$10 million (the "Offering"). Osisko Development may elect to increase the size of the Offering

by issuing additional Subscription Receipts, subject to approval of the TSX Venture Exchange.

Each Subscription Receipt issued pursuant to the Offering will entitle the holder thereof to receive,

upon the satisfaction of the Escrow Release Condition (as defined below) and without payment of

additional consideration, one unit of Osisko Development (each, a "Unit"). Each Unit will comprise of

one common share in the capital of Osisko Development (each, a " Common Share") and one

Common Share purchase warrant (each whole warrant, a "Warrant"), with each Warrant entitling the

holder thereof to purchase one additional Common Share at a price of US$6.00 per Common Share

for a period of five years following the date of issue.

The gross proceeds of the Offering will be held in escrow pending, among other things, the

completion of the listing of the Common Shares on the New York Stock Exchange ("Escrow Release

Condition"), which is contingent upon Osisko Development meeting the listing requirements of the

New York Stock Exchange (" NYSE") and may involve, among other things, a consolidation of the

Common Shares. If the Escrow Release Condition is met, Osisko Development anticipates that the

proceeds of the Offering will be used to advance the development of Osisko Development's mineral

assets and for general corporate purposes.

The Offering is subject to regulatory approvals, including conditional listing approval of the TSX

Venture Exchange for the Common Shares and Warrants. The securities issued pursuant to the

Offering will be subject to applicable hold periods, including the typical four month hold period from

the date of closing of the Offering. The Offering may be closed in multiple tranches and is not subject

to a minimum offering.

This news release does not constitute an offer to sell or a solicitation of an offer to buy any securities

in the United States or any other jurisdiction in which such offer, solicitation or sale would be unlawful.

No securities may be offered or sold in the United States or in any other jurisdiction in which such

offer or sale would be unlawful absent registration under the U.S. Securities Act of 1933, as amended,

or an exemption therefrom or qualification under the securities laws of such other jurisdiction or an

exemption therefrom.

About Osisko Development Corp.

Osisko Development Corp. is 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, Canada, is Osisko Development 's flagship asset with measured and indicated

resource of 21.44 million tonnes at 4.6 g/t Au for a total of 3.2 million ounces of gold and inferred

resource of 21.69 million tonnes at 3.9 g/t Au 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 U S$19 per ounce. The

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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 first half of 2022. 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, Canada as well as the Guerrero Properties

located in Guerrero, Mexico.

For further information about Osisko Development Corp., please contact:

Sean Roosen, CEO

Telephone: (514) 940-0685

Email: [email protected]

Jean Francois Lemonde, VP Investor Relations

Telephone: (514) 299-4926

Email: [email protected]

Follow us on our Social Media Platforms:

Facebook:

https://www.facebook.com/osiskodev

Linked In:

http://www.linkedin.com/company/osisko-dev

Youtube:

https://www.youtube.com/channel/UC-1LPPhZ9WZnOuWsf6mRWhw

Twitter:

https://twitter.com/OsiskoDev

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 expected size of the Offering, the use of proceeds of the Offering, the

jurisdictions in which the Subscription Receipts will be offered or sold, the number of Subscription Receipts

offered or sold, the ability of Osisko Development to close the Offering on terms announced (if at all), the

timing and ability of Osisko Development to satisfy the customary listing conditions of the TSX Venture

Exchange (if at all), the timing and ability of Osisko Development to complete the listing on the NYSE, meet

the minimum listing requirements of the NYSE and satisfy the Escrow Release Condition (if at all), the

timing and ability of Osisko Development to obtain all necessary approvals, future production of mines, is

based upon certain material assumptions that were applied in drawing a conclusion or making a forecast

or projection, including management 's perceptions of historical trends, current conditions and expected

future developments, public disclosure from operators of the relevant mines, 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 concer ning Osisko Development, see t he filing statement

dated November 20, 2020, which is available electronically under Osisko Development 's issuer profile on

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SEDAR ( www.sedar.com). 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 Venture Exchange nor its Regulation Services Provider (as that term is defined in

the policies of the TSX Venture Exchange ) 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.