MARCH 2026 GEARING UP TO BUILD CANADA'S NEXT MAJOR GOLD MINE INVESTOR PRESENTATION ODV NYSE TSXV | osiskodev.com Osisko Development used in this Presentation, certain non-IFRS measures including, "all-in sustaining cost" or "AISC" and "total cash cost" and "free cash flow". All-in sustaining cost per gold ounce is defined as production costs less silver sales plus general and administrative, exploration, other expenses and sustaining capital expenditures divided by gold ounces. Cash costs are a non-IFRS mea ...

MONTREAL, March 16, 2026 (GLOBE NEWSWIRE) -- Osisko Development Corp. (NYSE: ODV, TSXV: ODV) ("Osisko Development" or the "Company") is pleased to announce its inclusion in the VanEck Junior Gold Miners ETF ("GDXJ") pursuant to the GDXJ's semi-annual review and rebalancing announced on March 13, 2026, effective at the close of markets on March 20, 2026. "We are very pleased to be included in the widely followed GDXJ index, which we believe will further elevate our market visibility and trading liquidity pro ...

Core Viewpoint - Osisko Development Corp. has raised approximately C$24.9 million through the exercise of common share purchase warrants by Appian Capital Advisory Limited, which supports the funding of its Cariboo Gold Project [1][2]. Group 1: Financial Details - The company received C$24.9 million from the exercise of 5,625,031 common share purchase warrants [1]. - The warrants were issued at an exercise price of C$4.43 per common share [2]. - The funds are part of a senior secured project loan credit facility totaling US$450 million for the development of the Cariboo Gold Project [2]. Group 2: Company Overview - Osisko Development Corp. is focused on gold development in North America, particularly in past producing mining camps with district-scale potential [3]. - The company's flagship project is the fully permitted, 100%-owned Cariboo Gold Project located in central British Columbia, Canada [3]. - The project pipeline also includes the Tintic Project in Utah, which has significant exploration potential and access to established infrastructure [3]. - The company aims to develop long-life mining assets while maintaining a disciplined approach to capital allocation and risk management [3].

Core Viewpoint - Osisko Development Corp. has resumed activities at its Cariboo Gold Project in British Columbia after a temporary suspension due to a tragic incident, indicating a recovery phase for the company and its operations [1][2]. Group 1: Project Resumption - The Cariboo Gold Project was temporarily suspended in January 2026, but management has worked with regulators to ensure safety and has resumed both surface and underground activities in phases [2]. - More than 250 personnel are currently working at the site, reflecting the normal operating level at this stage of the project [2]. Group 2: Development Progress - The Bonanza Ledge water treatment plant is nearing full operation, and underground development has progressed to 2.1 kilometers from the Cow Portal [3]. - The Cariboo Gold Project is Osisko Development's flagship project, covering approximately 192,000 hectares and is fully owned by the company [3]. Group 3: Company Overview - Osisko Development Corp., founded in 2006 and headquartered in Montreal, focuses on acquiring, exploring, and developing precious metals properties across North America, positioning itself to benefit from favorable commodity prices as it advances toward production [3].

Company Overview - Osisko Development Corp. is a Canadian gold mining company focused on the exploration and development of large-scale mining projects, with its flagship Cariboo Gold project being a significant asset in British Columbia [5][7] - The company operates in both Canada and Mexico, leveraging a strategy aimed at advancing high-quality mineral properties through the project development lifecycle to unlock resource value and future production potential [5][7] - As of February 17, 2026, Osisko's stock price was $4.28, with a market capitalization of $1.3 billion and a revenue of $11.3 million over the trailing twelve months (TTM) [4] Recent Developments - Equinox Partners Investment Management reduced its position in Osisko Development by 1,032,596 shares, valued at approximately $3.55 million based on average quarterly pricing [1][2] - Following this transaction, Osisko's shares represented 1.02% of the fund's reportable U.S. equity assets under management [6] - The company has raised about $143.8 million through a bought deal offering priced at $3.54 per share to support drilling and exploration at the Cariboo Gold project [11] Project Progress - The Cariboo Gold Project is progressing through underground development and a large-scale infill drilling campaign aimed at converting mineral resources into mineable reserves [10] - Osisko has secured significant capital, including a $450 million project financing facility tied to the construction timeline of the Cariboo project [10] Market Performance - Osisko Development's shares have increased nearly 230% over the past year, significantly outperforming the S&P 500's approximately 16% gain during the same period [6]

Core Viewpoint - Osisko Development Corp. has resumed planned site activities at its Cariboo Gold Project in British Columbia after a temporary suspension due to a tragic incident, implementing a phased reopening plan to ensure the health and safety of all personnel [1][2]. Group 1: Project Activities - The site currently has over 250 personnel, reflecting normal operating levels for the current phase, which includes pre-construction, early works, and exploration drilling activities [2]. - The Bonanza Ledge water treatment plant is nearing full operational status, with upgrades in the final stages of commissioning [4]. - Approximately 2.1 kilometers of underground development has been completed, with challenges encountered in the Lowhee fault area, but development rates are expected to improve as work progresses [4]. - Infill drilling has resumed, with 1.6 kilometers remaining in the final drill fan of the ongoing 13-kilometer underground program [4]. - Six drill rigs are currently operating on surface exploration programs, with 5,000 meters of drilling completed to date and assays pending [4]. - Construction of critical surface infrastructure, including the waste rock storage facility and sediment control pond, is ongoing [4]. - The site camp has been upgraded and expanded to 266 rooms to accommodate peak construction manpower requirements [4]. Group 2: Company Overview - Osisko Development Corp. is focused on developing the Cariboo Gold Project, a fully permitted and 100%-owned asset, with the goal of becoming an intermediate gold producer [6]. - The company also has a project pipeline that includes the Tintic Project in Utah, which has significant exploration potential and access to established infrastructure [6]. - The company aims to develop long-life mining assets in mining-friendly jurisdictions while maintaining a disciplined approach to capital allocation and risk management [6].

Company Overview - Osisko Development Corp. (NYSE:ODV) was founded in 2006 and is headquartered in Montreal, focusing on the acquisition, exploration, and development of precious metals properties across North America [4] Recent Developments - On January 27, Osisko announced a bought deal financing with National Bank Capital Markets, RBC Capital Markets, and Cantor, issuing 35.31 million common shares at $3.54 per share for gross proceeds of approximately $125 million. The net proceeds will be used for infill conversion drilling, deeper exploration at the Cariboo Gold Project, and general working capital [3] - Stifel raised its price target on Osisko Development Corp. to C$10 from C$8 while maintaining a Buy rating, indicating confidence in the company's development progress and the advancing fundamentals of its core assets [2] Project Highlights - The Cariboo Gold Project is highlighted as Osisko's flagship project, moving toward a value-creation inflection point, supported by improving project visibility and strengthening gold market dynamics [2]

Core Insights - Osisko Development Corp. has announced new infill drilling results from its ongoing 13,000-meter program at the Cariboo Gold Project, with a total of approximately 11,025 meters completed, representing about 80% of the planned drilling [2][4]. Drilling Program Details - The infill drilling program commenced in August 2025 and involves 10-meter drill spacing in the Lowhee Zone of the Cariboo Gold Project [2][3]. - A total of approximately 12.1 kilometers (km), or about 88% of the planned drill meters, has been completed to date, with full assay results pending for the remaining holes [3][4]. Assay Highlights - The latest results include significant gold intercepts such as: - 596.40 grams per tonne (g/t) Au over 2.0 meters from 6.1 meters downhole, including 2,293.56 g/t Au over 0.5 meters [4][5]. - 21.67 g/t Au over 3.5 meters from 96.5 meters downhole, including 135.44 g/t Au over 0.5 meters [5][6]. - 21.97 g/t Au over 2.5 meters from 48.7 meters downhole, including 88.08 g/t Au over 0.5 meters [5][6]. Implications of Results - The results are expected to enhance the understanding of spatial controls and local variability within the Lowhee Zone, which may lead to refinements in the infill drill requirements and production designs [3][9]. - Observations of above cut-off assays in previously unmodeled areas suggest potential for additional mineralization, which will be incorporated into the updated local block model [9][10]. Future Outlook - Infill drilling activities are anticipated to conclude in early Q2 2026, following a temporary suspension due to an incident reported on January 23, 2026 [3][4].

Core Viewpoint - Osisko Development Corp. has entered into a Project and Construction Management Services Agreement with JDS Energy & Mining Inc. for the development of the Cariboo Gold Project in British Columbia, indicating a strategic partnership aimed at enhancing project delivery and execution [1][2]. Company Overview - Osisko Development Corp. is focused on developing past-producing mining camps with district-scale potential, aiming to become an intermediate gold producer through its flagship Cariboo Gold Project, which is fully permitted and 100%-owned [3]. - The company also has a project pipeline that includes the Tintic Project in Utah, which has significant exploration potential and access to established infrastructure [3]. - Osisko Development emphasizes developing long-life mining assets in mining-friendly jurisdictions while maintaining disciplined capital allocation and development risk management [3]. JDS Energy & Mining Inc. Overview - JDS Energy & Mining Inc. is a mining services company based in Western Canada, founded in 2004, known for its skilled team and proven track record in delivering projects on budget and schedule [2]. - The company has experience in managing projects from concept through operations and reclamation, with past projects including the Minto Mine, Gahcho Kue Mine, and Silvertip Mine [2].

Core Viewpoint - Osisko Development Corp. has successfully completed a prospectus offering of common shares, raising approximately US$143.75 million to fund drilling and exploration activities at its Cariboo Gold Project, which is seen as a pivotal moment for the company in 2026 [1][2]. Group 1: Offering Details - The company issued a total of 40,607,650 common shares at a price of US$3.54 per share, resulting in gross proceeds of US$143,751,081, including the full exercise of the underwriters' over-allotment option [1]. - The offering was conducted on a "bought deal" basis with underwriters including National Bank Capital Markets, RBC Capital Markets, and Cantor as co-lead underwriters [1]. - A cash commission of 4.5% of the aggregate gross proceeds was paid to the underwriters in connection with the offering [3]. Group 2: Use of Proceeds - The net proceeds from the offering will be utilized for infill conversion drilling and at-depth exploration at the Cariboo Gold Project, as well as for general working capital purposes [3]. - The company aims to accelerate infill conversion drilling to upgrade existing mineral resources to mineral reserves, potentially enhancing annual gold production [2]. Group 3: Insider Participation - Double Zero Capital LP, an insider of the company, purchased 8,080,000 common shares for gross proceeds of US$28,603,200, exercising its pre-emptive rights under an investor rights agreement [5]. - The transaction is classified as a "related party transaction" under Multilateral Instrument 61-101, and the company is relying on exemptions from formal valuation and minority shareholder approval requirements [5]. Group 4: Regulatory and Compliance - The offering is subject to final approval from the TSX Venture Exchange [6]. - The offering was completed in Canada and the United States through respective prospectus supplements filed with the appropriate regulatory authorities [4]. Group 5: Company Overview - Osisko Development Corp. is focused on developing its flagship Cariboo Gold Project in British Columbia, aiming to become an intermediate gold producer [8]. - The company also has a project pipeline that includes the Tintic Project in Utah, which has significant exploration potential [8].