Osisko Development Corp.

Osisko Development Corp. is pleased to announce the appointment of Ms. Sarah Harrison as Vice President, Permitting and Compliance, effective February 2, 2026. Ms. Harrison joins Osisko Development from JDS Energy & Mining Inc., where she most recently held the position of Project Manager within its Environmental Division. Ms. Harrison is a permitting and regulatory compliance professional with over 13 years of experience [...]

Osisko Development is pleased to announce that it has completed the previously announced sale of its 100% interest in the San Antonio Gold Project located in Sonora State, Mexico, to Axo Copper through the sale of all of the issued and outstanding equity interests of Sapuchi Minera. At closing, Osisko Development received 15,325,841 common shares of Axo, representing 9.99% of the issued and outstanding common shares of [...]

Osisko Development is pleased to announce that it has entered into an agreement with National Bank Capital Markets, RBC Capital Markets and Cantor, as co-lead underwriters and co-bookrunners, on behalf of a syndicate of underwriters, pursuant to which the Underwriters have agreed to purchase, on a "bought deal" basis, 35,311,000 common shares of the Company, at a price of US$3.54 per Share, for gross proceeds of [...]

Osisko Development regrets to report that on Jan 22, 2026, a contractor working at surface suffered a fatal injury following an isolated incident at the Cariboo Gold Project. The Company promptly notified appropriate authorities, and an investigation of the incident is underway. Sean Roosen, Chairman and CEO, stated: "We are deeply saddened by this tragic accident and extend our heartfelt condolences and support to our [...]

Osisko Development announces that, on Dec 18, 2025, Osisko Development acquired, indirectly through its wholly-owned subsidiary, Barkerville Gold Mines, 8,571,429 units of Niobay Metals at a price of $0.14 per unit for an aggregate subscription price of $1,200,000.06, pursuant to a private placement completed by Niobay. Each unit consisted of one common share of Niobay and one Common Share purchase warrant of Niobay [...]

5,983 m of infill drilling completed on 10-m drill spacing in 62 drill holes from August 2025, representing ~44% of the total planned 13,000-m infill program Highlights include: 8.56 g/t Au over 8.5m from 60.5m depth, 16.95 g/t Au over 4.0m from 80m depth, and 9.32 g/t Au over 6.0m from 58m depth Results to date continue to be broadly consistent with modelled reserve stopes, indicate potential for upside mineralization in [...]

HIGHLIGHTS1 Fully-funded 70,000-meter exploration drill program launched with two drill rigs already operating at the Cariboo Gold Project site, and ramping up to six drill rigs as the program advances through the end of 2026 Priority exploration targets and initial planned drilling: Cariboo Deep - targeting areas at depth beneath the existing deposit within the permitted Cariboo Gold Project mine plan boundary. Total [...]

Osisko Development Corp. is pleased to announce that it has entered into a securities purchase agreement dated November 21, 2025 with Axo Copper Corp. to sell its 100% interest in the San Antonio Gold Project located in the Sonora State, Mexico. Pursuant to the Purchase Agreement, Axo will acquire Sapuchi Minera S.A. de R.L. de C.V. , which holds a 100% interest in the mineral concessions comprising San Antonio, subject [...]

HIGHLIGHTS Q3 2025 ~$401.4 million in cash and cash equivalents Drawn ~$137.2 million under the US$450 million Appian financing facility executed during the quarter Completed private placements for ~$280.4 million in gross proceeds Advanced pre-construction activities and underground mine development activities, and announced results of ore sorting and drilling programs at the permitted Cariboo Gold Project Sold 877 [...]

Osisko Development Corp. is pleased to announce the appointment of Mr. Scott Smith as Vice President, Exploration effective November 1, 2025. Mr. Smith joins from Prime Mining Corp. where he most recently served as Executive Vice President, Exploration until its acquisition by Torex Gold Resources Inc. in October 2025. "We are delighted to bolster our exploration team with Scott's appointment. He brings over 30 years of [...]