- Osisko Development Corp. announced an **upsized "bought deal" financing** totaling **C$60 million** due to excess demand.  **[1431852_0001171843-25-006383_exh_991.htm:0]** 
- The **LIFE Offering** will generate **C$49,999,980** through the issuance of: **2,990,000 National Flow-Through Shares** at C$6.69 each (C$20,003,100), **1,444,000 British Columbia Flow-Through Shares** at C$6.93 each (C$10,006,920), and **4,182,000 Common Shares** at C$4.78 each (C$19,989,960).  **[1431852_0001171843-25-006383_exh_991.htm:0]** 
- A **Concurrent Private Placement** will raise an additional **C$10,000,238** by issuing **2,092,100 Common Shares** at C$4.78 per share.  **[1431852_0001171843-25-006383_exh_991.htm:0]** 
- The company intends to use the **net proceeds of approximately C$30 million** from the Common Shares issued in the LIFE Offering and Concurrent Private Placement to contribute to the capital required for the **Cariboo Gold Project** and related pre-construction activities.  **[1431852_0001171843-25-006383_exh_991.htm:0]** 
- Closing of both the LIFE Offering and Concurrent Private Placement is expected on or about **October 29, 2025**.  **[1431852_0001171843-25-006383_exh_991.htm:0]**

Osisko Development Corp. Upsizes Bought Deal LIFE Offering and Announces Concurrent Private Placement

- Osisko Development Corp. has increased its "bought deal" financing to **C$60 million** due to excess demand.  **[1431852_bf5483788ef34b9ca021fada354cca2d_0]** 
- The financing consists of a **LIFE Offering** for **C$49,999,980** and a **Concurrent Private Placement** for **C$10,000,238**.  **[1431852_bf5483788ef34b9ca021fada354cca2d_0]** **[1431852_bf5483788ef34b9ca021fada354cca2d_1]** 
- The net proceeds from the Common Shares, approximately **C$30 million**, are intended to fund the **Cariboo Gold Project** and related pre-construction activities.  **[1431852_bf5483788ef34b9ca021fada354cca2d_1]** 
- Closing for both offerings is anticipated on or about **October 29, 2025**.  **[1431852_bf5483788ef34b9ca021fada354cca2d_1]**

Osisko Development announces increased financing to C$60 million

- Osisko Development Corp. (ODV) has announced an **upsized "bought deal" financing** totaling **C$60 million** due to excess demand.  **[1431852_05c7cef1c6c4461bb34397e761796aac_0]** 
- This financing comprises a LIFE Offering for gross proceeds of **C$49,999,980** through the issuance of National Flow-Through Shares, British Columbia Flow-Through Shares, and Common Shares, along with a concurrent private placement of **C$10,000,238** from Common Shares.  **[1431852_05c7cef1c6c4461bb34397e761796aac_0]** **[1431852_05c7cef1c6c4461bb34397e761796aac_1]** 
- Approximately **C$30 million** of the net proceeds from the Common Shares issued will be allocated to the construction and pre-construction activities for the **Cariboo Gold Project**.  **[1431852_05c7cef1c6c4461bb34397e761796aac_1]** 
- The closing of both the LIFE Offering and the Concurrent Private Placement is anticipated on or about **October 29, 2025**, contingent upon receiving all necessary regulatory approvals.  **[1431852_05c7cef1c6c4461bb34397e761796aac_1]**

Osisko Development Upsizes Financing to C$60 Million

- Osisko Development Corp. announced a **C$30,010,020 bought deal private placement** of flow-through shares.  **[1431852_0001171843-25-006362_exh_991.htm:0]** 
- The offering includes **2,990,000 National Flow-Through Shares** at **C$6.69 per share** and **1,444,000 British Columbia Flow-Through Shares** at **C$6.93 per share**.  **[1431852_0001171843-25-006362_exh_991.htm:0]** 
- The gross proceeds will be used to fund eligible **Canadian exploration expenses** and **BC flow-through mining expenditures** for exploration activities on the Company's properties in British Columbia.  **[1431852_0001171843-25-006362_exh_991.htm:0]** 
- The offering is expected to close on or about **October 29, 2025**.  **[1431852_0001171843-25-006362_exh_991.htm:0]**

Osisko Development Corp. announces C$30 million bought deal offering

- **Osisko Development Corp.** (ODV) has entered into a **bought deal private placement** agreement with underwriters for aggregate gross proceeds of **C$30,010,020**.  **[1431852_dced20082969492b91451b58a92d8abb_0]** 
- The offering includes **2,990,000 National Flow-Through Shares** at **C$6.69** per share and **1,444,000 British Columbia Flow-Through Shares** at **C$6.93** per share.  **[1431852_dced20082969492b91451b58a92d8abb_0]** 
- The proceeds will be used to incur eligible **Canadian exploration expenses** and **BC flow-through mining expenditures** for exploration activities on the Company's British Columbia properties, to be incurred by **December 31, 2026**, and renounced by **December 31, 2025**.  **[1431852_dced20082969492b91451b58a92d8abb_1]** 
- The offering is expected to close on or about **October 29, 2025**, and the underwriters will receive a **4.50% cash commission**.  **[1431852_dced20082969492b91451b58a92d8abb_1]** **[1431852_dced20082969492b91451b58a92d8abb_2]**

Osisko Development Announces C$30 Million Flow-Through Share Offering

- Osisko Development Corp. has completed **2,279 meters** of infill drilling, representing **~17.5%** of its **13,000-meter** program, at the Lowhee Zone of the Cariboo Gold Project since **August 2025**.  **[1431852_048224eb01854141ad8c5124a625e1de_0]** **[1431852_048224eb01854141ad8c5124a625e1de_1]** 
- Highlight intercepts from the **24 drill holes** include **45.24 g/t Au over 3.0 m**, which contains **233.92 g/t Au over 0.5 m**.  **[1431852_048224eb01854141ad8c5124a625e1de_0]** **[1431852_048224eb01854141ad8c5124a625e1de_2]** 
- Initial results show good continuity consistent with modelled vein zones and planned stopes, with high-grade intercepts reinforcing the potential for delineating new zones and expanding existing ones.  **[1431852_048224eb01854141ad8c5124a625e1de_0]** 
- The Cariboo Gold Project, a **100%-owned** feasibility-stage project, received its _Mines Act_ and _Environmental Management Act_ permits in **late 2024**, solidifying its shovel-ready status.  **[1431852_048224eb01854141ad8c5124a625e1de_8]**

Osisko Development Provides Update on Cariboo Gold Project Infill Drilling

- Osisko Development Corp. secured a **$450 million** senior secured project loan facility and completed a private placement raising approximately **$203 million** for the development and construction of its Cariboo Gold Project.  **[1431852_e0e70ca97894438ea12601752f73cd8e_2]** 
- The Cariboo Gold Project is fully-permitted, with first gold production targeted as early as the **second half of 2027**, assuming construction commences in the **second half of 2025**.  **[1431852_e0e70ca97894438ea12601752f73cd8e_3]** 
- An Optimized Feasibility Study (OFS) for Cariboo outlined a Probable Mineral Reserve of **17.8 million tonnes** grading **3.62 g/t Au** for **2.071 million ounces** contained Au, with a planned ramp-up to **4,900 tonnes per day**.  **[1431852_e0e70ca97894438ea12601752f73cd8e_3]** 
- Following the private placement, OR Royalties' interest in Osisko Development was reduced to **13.97%** of total shares outstanding.  **[1431852_e0e70ca97894438ea12601752f73cd8e_2]**

Osisko Development Provides Updates on Cariboo Gold Project and Financing

- **Carcetti Capital Corp.** is set to acquire the **Hemlo Gold Mine** from **Barrick Mining Corporation** for **$875 million in cash, 34.6 million Carcetti shares, and up to $165 million in contingent cash payments**.  **[1431852_9c97533efd8d4166b936b33bff1d594e_0]** 
- The acquisition is fully funded by a **$1.0 billion financing package**, which includes a **$400 million gold stream** with Wheaton Precious Metals Corp., **$225 million in senior secured credit facilities**, and a **$415 million private placement**.  **[1431852_9c97533efd8d4166b936b33bff1d594e_0]** **[1431852_9c97533efd8d4166b936b33bff1d594e_5]** 
- The **Hemlo Gold Mine** is characterized by a **14-year mine life** with **average annual gold production of 154,000 ounces** at under **$1,550/oz All-in Sustaining Costs (AISC)**.  **[1431852_9c97533efd8d4166b936b33bff1d594e_1]** **[1431852_9c97533efd8d4166b936b33bff1d594e_3]** 
- Upon closing, expected in the **fourth quarter of 2025**, Carcetti will be renamed **Hemlo Mining Corp.** and led by an experienced management team, aiming to become a new mid-tier Canadian gold producer.  **[1431852_9c97533efd8d4166b936b33bff1d594e_0]** **[1431852_9c97533efd8d4166b936b33bff1d594e_1]** **[1431852_9c97533efd8d4166b936b33bff1d594e_4]**

Carcetti Capital to Acquire Hemlo Gold Mine from Barrick

- Osisko Development Corp. entered into an Investor Rights Agreement with Double Zero Capital LP on **August 15, 2025**.  **[1431852_0001104659-25-085647_tm2524668d1_ex99-1.htm:0]** 
- This agreement was a condition of Double Zero Capital LP's subscription for **36,600,000 units**  **[1431852_0001104659-25-085647_tm2524668d1_ex99-1.htm:0]** , with each unit comprising **one Common Share** and **one-half of one Common Share purchase warrant**.  **[1431852_0001104659-25-085647_tm2524668d1_ex99-4.htm:1]** 
- Each whole warrant entitles Double Zero Capital LP to purchase one additional Common Share at **US$2.56** per share for a period of **24 months** from the issuance date.  **[1431852_0001104659-25-085647_tm2524668d1_ex99-1.htm:0]** **[1431852_0001104659-25-085647_tm2524668d1_ex99-4.htm:1]** 
- Following the completion of the offering and an investment fee payment, Double Zero Capital LP holds **38,064,000 Common Shares** and **18,300,000 Warrants**, representing approximately **16.0%** of the issued and outstanding Common Shares on a non-diluted basis.  **[1431852_0001104659-25-085647_tm2524668d1_ex99-4.htm:2]** 
- The agreement grants Double Zero Capital LP certain rights, including **Board Nomination Rights**.  **[1431852_0001104659-25-085647_tm2524668d1_ex99-1.htm:0]**

Osisko Development (ODV)