Osisko Mining
Osisko Mining was a Canadian gold exploration and development company focused on its flagship Windfall Project in Quebec's Urban-Barry greenstone belt. Acquired by Gold Fields Limited in October 2024 for C$2.16 billion, it was delisted from the TSX.
- Company typePrivate
- Founded2010
- HeadquartersToronto, Canada
- Headcount101–250
- GTM typeB2B
- OfferingHardware or Manufacturing
What Osisko Mining does
Osisko Mining Inc. was a Canadian gold exploration and development company headquartered in Toronto, Ontario. Founded in 2010 and previously listed on the Toronto Stock Exchange (TSX:OSK), the company's primary focus was advancing its flagship Windfall Project, a significant high-grade gold deposit located in Quebec's Urban-Barry greenstone belt within the Abitibi region. Osisko's project portfolio also included interests in the Quévillon and Urban-Barry properties in Quebec, positioning the company as a single-commodity (gold) junior miner concentrated in a tier-one Canadian mining jurisdiction.
The company generated no commercial revenue during the analyzed period, operating as a pre-production explorer and developer. Its business model relied on equity financings — including a C$100 million private placement completed in February 2023 and cumulative funding rounds exceeding C$970 million since 2015 — to fund drilling, resource definition, feasibility studies, and permitting activities. Osisko pursued growth through strategic land acquisitions, including the 2016 Niogold Mining acquisition and the 2018 Beaufield Mews acquisition, to consolidate its footprint around the Windfall Project.
In August 2024, Gold Fields Limited announced its agreement to acquire Osisko Mining for approximately C$2.16 billion (~$1.57 billion) at C$4.90 per share. The transaction was completed in October 2024, resulting in Osisko's delisting from the TSX and its absorption as a wholly-owned subsidiary of Gold Fields Windfall Holdings Inc. Post-acquisition, the Windfall Project and related assets operate under Gold Fields' Canadian subsidiary, and Osisko's independent executive team resigned as part of the concluded arrangement.
Osisko Mining firmographics
Firmographics- Name
- Osisko Mining
- Legal name
- Osisko Mining Inc.
- Website
- https://osiskomining.com
- Company type
- Private
- Founded year
- 2010
- Operating status
- Acquired
- Headcount range
- 101–250 employees
- Short description
- Osisko Mining was a Canadian gold exploration and development company focused on its flagship Windfall Project in Quebec's Urban-Barry greenstone belt. Acquired by Gold Fields Limited in October 2024 for C$2.16 billion, it was delisted from the TSX.
- Ownership category
- akta.pro rank
Osisko Mining industry classification
Industry- Product category
- Gold Mining
- NAICS
- Gold Ore and Silver Ore Mining (21222)
- SIC
- Gold And Silver Ores (1040)
- akta.pro primary industry
- Gold Mining (IMAKAEAA)
- akta.pro secondary industry
- Precious Metals Exploration & Project Development (IMAKAEAI)
Keywords
Where Osisko Mining is headquartered
LocationHeadquarters
- HQ city
- Toronto
- HQ country
- Canada
- HQ region
- North America
Markets served
Osisko Mining business model
Business model- GTM type
- B2B
- Offering type
- Hardware or Manufacturing
- Cost components
- Operations, Infrastructure, Personnel, Technology or R&D, Supply Chain
Distribution channels1 record
Marketing channels2 records
Osisko Mining product offering
Product offeringCore offering
Osisko Mining explored for and developed gold mineral resources, principally through its flagship Windfall Project in Quebec's Urban-Barry greenstone belt, alongside the Quévillon and Urban-Barry projects. The company planned to produce and sell gold from these deposits into global commodity markets, deriving revenue from extracted precious metals sales to refineries and traders. Following the October 2024 acquisition by Gold Fields Limited, the assets continue to be advanced by Gold Fields Windfall Holdings Inc.
Product overview
Osisko Mining was a gold exploration and development company focused on its flagship Windfall Project in Quebec, Canada. The company operated primarily in the Urban-Barry greenstone belt and was acquired by Gold Fields Limited in October 2024 for approximately C$2.16 billion (~$1.57 billion). Post-acquisition, the Windfall Project is now operated by Gold Fields Windfall Holdings Inc., with Osisko having been delisted from the Toronto Stock Exchange. Osisko's project portfolio included the Windfall, Quévillon, and Urban-Barry projects in Quebec's Abitibi Greenstone Belt.
Differentiator
Problem solved
Functional benefit
Products and services
- Windfall Project Flagship high-grade underground gold deposit located in the Urban-Barry belt of Quebec, Canada, developed by Osisko Mining as the centerpiece of its gold production pipeline and now operated by Gold Fields Windfall Holdings Inc.
- Quévillon Project Gold exploration project located in Quebec, part of Osisko Mining's broader portfolio of precious metals assets within the Abitibi Greenstone Belt.
- Urban-Barry Project Gold exploration project within the Urban-Barry greenstone belt of Quebec, forming part of Osisko Mining's portfolio of gold assets in the Abitibi region.
Companies that use Osisko Mining
Customer profileSegments1 record
Ideal customer profiles1 record
Osisko Mining technology and API
TechnologyTechnology focussed No
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Osisko Mining partnerships and signals
Strategic signalScale indicators3 records
Recent moves7 records
Expansion highlights3 records
Osisko Mining competitors and assessment
Company assessmentDirect peers
- IAMGOLD Corporation: Canadian mid-tier gold producer with exploration and development assets in Quebec and West Africa. Comparable to Osisko as a publicly listed Canadian gold company with both producing and development-stage assets in tier-one jurisdictions.
- Bonterra Resources Inc. Quebec-focused gold exploration and development company advancing projects in the Urban-Barry area. Closely comparable to Osisko as a junior developer operating in the same greenstone belt and competing for the same local talent and capital.
- Probe Metals Inc. Canadian gold exploration company with a flagship project in the Val-d'Or area of Quebec. Directly comparable to Osisko as a Quebec-focused gold developer with district-scale exploration optionality.
- Wallbridge Mining Company Limited: Exploration and development company advancing the Martiniere gold project in Quebec's Urban-Barry and Detour-Fenelon gold trends. Directly comparable given geographic overlap and similar development-stage profile.
- Wesdome Gold Mines Ltd. Canadian gold producer with operations in Ontario and Quebec. Comparable to Osisko as a mid-tier Canadian gold company transitioning projects from exploration into production in eastern Canada.
Broad incumbents
- Agnico Eagle Mines Limited: Senior Canadian gold producer with a long-standing Quebec footprint including the Canadian Malartic mine. Operates as a major incumbent across the Abitibi region and represents the type of large operator that would value a Quebec development asset like Windfall.
- Eldorado Gold Corporation: Intermediate gold producer with operations across Canada, Turkey, and Greece. Comparable as a mid-tier gold operator with a portfolio that includes both producing and development-stage assets.
- New Gold Inc. Canadian intermediate gold producer with producing assets in Canada (Rainy River) and Chile. Comparable to Osisko as a Canada-headquartered gold company with capital-intensive development experience.
- Equinox Gold Corp. Multi-asset gold producer with operations across the Americas, including Canada. Comparable as a growth-oriented mid-tier gold company built through acquisitions and project development.
- Pan American Silver Corp. Major precious metals producer with diversified gold and silver operations across the Americas. Comparable to Osisko as a senior acquirer in the Canadian precious metals space following its acquisition of Yamana Gold.
Market position
Strengths4 records
Weaknesses4 records
Competitive moat3 records
Key risks5 records
Key highlights5 records
Customer concentration
Osisko Mining social profiles
Digital presenceOsisko Mining financial estimates
Financial estimateRevenue estimate
Valuation estimate
Osisko Mining leadership team
Management profileNumber of profiles
Profiles3 records
Osisko Mining funding detail
Funding detailFunding overview
Funding rounds16 records
Investors2 records
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Osisko Mining M&A and investment
M&A and investmentM&A2 records
Investments2 records
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about Osisko Mining
What does Osisko Mining do?
Osisko Mining explored for and developed gold mineral resources, principally through its flagship Windfall Project in Quebec's Urban-Barry greenstone belt, alongside the Quévillon and Urban-Barry projects. The company planned to produce and sell gold from these deposits into global commodity markets, deriving revenue from extracted precious metals sales to refineries and traders. Following the October 2024 acquisition by Gold Fields Limited, the assets continue to be advanced by Gold Fields Windfall Holdings Inc.
Is Osisko Mining a public or private company?
Osisko Mining is a private company. It is classified as corporate owned and is currently acquired.
When was Osisko Mining founded?
Osisko Mining was founded in 2010. It employs 101 to 250 people.
Where is Osisko Mining based?
Osisko Mining is headquartered in Toronto, Canada, in the North America region.
Who are Osisko Mining's main competitors?
Direct peers on record are IAMGOLD Corporation, Bonterra Resources Inc., Probe Metals Inc., Wallbridge Mining Company Limited and Wesdome Gold Mines Ltd.. Broad incumbents are Agnico Eagle Mines Limited, Eldorado Gold Corporation, New Gold Inc., Equinox Gold Corp. and Pan American Silver Corp..
Does Osisko Mining have an API?
No public API is recorded for Osisko Mining.
What industry is Osisko Mining in?
Osisko Mining's product category is Gold Mining. Its primary akta.pro industry code is IMAKAEAA, Gold Mining, with a secondary code of IMAKAEAI, Precious Metals Exploration & Project Development. Its NAICS code is 21222 and its SIC code is 1040.