ODV

HIGHLIGHTS 8,971 m of new surface exploration drilling designed to test near mine potential at depth and in under-drilled gap zones between defined deposit footprints. Approximately 65% of drilling transected areas outside the Cariboo Gold deposit.

MONTREAL, June 24, 2026 (GLOBE NEWSWIRE) -- Osisko Development Corp. (NYSE: ODV, TSXV: ODV) ("Osisko Development" or the "Company") announces below the results of its annual and special meeting of shareholders of the Company (the "Meeting") held on June 23, 2026. Further information regarding the business of the Meeting is contained in the Company's management information circular dated May 11, 2026 (the "Circular"), which is available on SEDAR+ (www.sedarplus.ca) under the Company's issuer profile.

HIGHLIGHTS 13,684 m of grid infill drilling completed (2,659 m new results) on 10-m drill spacing in 142 drill holes from August 2025 representing the entirety of the planned Appian infill program Highlight intercepts include: 44.68 g/t Au over 1.5 m from 27.9 m downhole (including 133.62 g/t Au over 0.5 m from 28.4 m downhole), and 25.78 g/t Au over 2.5 m from 41.3 m downhole (including 103.47 g/t Au over 0.5 m from 42.8 m downhole, and 12.51 g/t Au over 1.0 m from 41.8 m downhole) 2,995 m of additional infill and near mine exploration drilling completed as part of ongoing Lowhee zone underground diamond drilling Highlight intercepts include: 31.64 g/t Au over 2.0 m from 50.0 m downhole (including 125.24 g/t over 0.5 m from 50.5 m downhole), and 11.21 g/t Au over 4.9 m from 63.3 m downhole (including 58.19 g/t Au over 0.7 m from 65.0 m downhole, and 17.57 g/t Au over 0.7 m from 63.3 m downhole). Results to date continue to contribute to a more detailed understanding of spatial controls and local variability within Lowhee Zone and give positive indications for near mine potential MONTREAL, June 09, 2026 (GLOBE NEWSWIRE) -- Osisko Development Corp. (NYSE: ODV, TSXV: ODV) ("Osisko Development" or the "Company") is pleased to announce new infill drilling results from its completed 13,000-meter program on 10 meter drill spacing, as well as new results from additional infill and near mine exploration activities in the Lowhee Zone of the Company's permitted, 100%-owned Cariboo Gold Project (the "Project"), located in central British Columbia ("B.C.

MONTREAL, June 02, 2026 (GLOBE NEWSWIRE) -- Osisko Development Corp. (NYSE: ODV, TSXV: ODV) ("Osisko Development" or the "Company") announces its upcoming annual and special meeting (the "Meeting") of holders of common shares of the Company (the "Shareholders"), to be held on June 23, 2026 at 1:30 p.m. (Eastern time) at First Canadian Place, 100 King St. W., Suite 3400, Toronto, Ontario, M5X 1A4.

MONTREAL, June 01, 2026 (GLOBE NEWSWIRE) -- Osisko Development Corp. (NYSE: ODV, TSXV: ODV) ("Osisko Development" or the "Company") announced today the closing on May 29, 2026 of an additional US$75.0 million aggregate principal amount of 4.125% convertible senior notes due 2031 (the "Notes"), consisting of US$25.0 million aggregate principal amount of Notes sold pursuant to the full exercise of the initial purchasers' option to purchase additional notes from the Company's previously announced offering (the "Initial Purchasers' Option") and US$50.0 million aggregate principal amount of Notes sold in a concurrent private placement (the "Private Placement") with Double Zero Capital, LP ("Double Zero") (the "Double Zero Notes"). Together with the Company's closing of its offering of US$225.0 million aggregate principal amount of Notes in a private placement on May 26, 2026 (the "Base Offering," and collectively with the Initial Purchasers' Option and the Private Placement, the "Offerings") total gross proceeds from the Offerings were US$300.0 million.

MONTREAL, May 28, 2026 (GLOBE NEWSWIRE) -- Osisko Development Corp. (NYSE: ODV, TSXV: ODV) ("Osisko Development" or the "Company") announces that, in accordance with the terms of the Company's previously-completed acquisition in May 2022 of a 100% ownership interest in the Tintic Project, located in Utah, U.S.A., (the "Tintic Acquisition"), the Company intends to satisfy the fourth of five deferred payments (the "Fourth Deferred Payment") to certain sellers of the Tintic Project (the "Sellers") in common shares of the Company ("Common Shares").

Osisko Development Corp. (ODV) has been upgraded to a Zacks Rank #2 (Buy), reflecting growing optimism about the company's earnings prospects. This might drive the stock higher in the near term.

MONTREAL, May 21, 2026 (GLOBE NEWSWIRE) -- Osisko Development Corp. (NYSE: ODV, TSXV: ODV) ("Osisko Development" or the "Company") announces the pricing of US$275.0 million aggregate principal amount of 4.125% convertible senior notes due 2031 (the "Notes") in a private placement to persons reasonably believed to be qualified institutional buyers pursuant to Rule 144A under U.S. Securities Act of 1933, as amended (the "Securities Act") (the "Offering") and in a concurrent private placement (the "Private Placement") under Section 4(a)(2) of the Securities Act. The Notes priced with a conversion premium of approximately 25.0% to the last reported sale price per share of the Company's common shares, no par value (the "Common Shares") (US$2.94 per Common Share) on the NYSE on May 20, 2026.

MONTREAL, May 20, 2026 (GLOBE NEWSWIRE) -- Osisko Development Corp. (NYSE: ODV, TSXV: ODV) ("Osisko Development" or the "Company") announces its intention to offer convertible senior notes due 2031 (the "Notes") in an aggregate principal amount of US$225.0 million in a private placement (the "Offering") to persons reasonably believed to be qualified institutional buyers pursuant to Rule 144A under U.S. Securities Act of 1933, as amended (the "Securities Act").

MONTREAL, May 19, 2026 (GLOBE NEWSWIRE) -- Osisko Development Corp. (NYSE: ODV, TSXV: ODV) ("Osisko Development" or the "Company") is pleased to announce the appointment of Mr. Greg Perrins as Vice President, Sustainable Development, effective May 18, 2026.