Sean Roosen

Sean Roosen

Chief Executive Officer at OSISKO GREEN ACQUISITION LIMITED

Net worth: 852 959 $ as of 30/06/2025

61 year
Non-Energy Minerals
Energy Minerals
Miscellaneous

Profile

Sean E.
O.
Roosen
was the founder of Osisko Mining Corp.
(1982), serving as President, Chief Executive Officer & Director from 2010 to 2014; Osisko Development Corp.
(2020), previously serving as Chairman & Chief Executive Officer; and OR Royalties, Inc. (2014), serving as Non-Executive Chairman in 2023.
Current jobs include Chairman & Chief Executive Officer of Osisko Green Acquisition Ltd. since 2021 and Director of Brett Resources, Inc. since 2010.
Former jobs include Chairman of Niogold Mining Corp.
from 2015 to 2016, Non-Executive Chairman of Rio Novo Gold, Inc. from 2010 to 2012, Chairman of Falco Resources Ltd. from 2014 to 2019, Founding Chairman of Condor Energies, Inc. from 2011 to 2019, Founding Chairman of EurAsia Resource Holdings AG, Chairman of Barkerville Gold Mines Ltd. from 2015 to 2019, Chairman-Supervisory Board of EurAsia Holding AG, Director roles at ValGold Resources Ltd., Unigold, Inc., Mistango River Resources, Inc., Nevoro, Inc., Independent Director of Osisko Metals, Inc. from 2011 to 2016, Independent Director of Victoria Gold Corp.
from 2018 to 2021, and Director roles at Nighthawk Gold Corp., Highland Copper Co., Inc., Black Dragon Gold Corp.
from 2010 to 2014, Gold Terra Resource Corp., Bonterra Resources, Inc., Independent Director of Dalradian Resources, Inc. from 2010 to 2018, Director roles at Cornish Metals, Inc., Brunswick Exploration, Inc., KGL Resources Ltd. (Canada), Operations Director of IRT Interconti Trading GmbH in 2003, Director roles at Ryan Gold Corp., Independent Director of Osisko Mining, Inc. from 2020 to 2022, Director roles at EurAsia Resource Value SE, Operations Manager of Etruscan Resources, Inc., and Chief Operating Officer of Falcon Energy, Inc. Education includes an undergraduate degree from Haileybury School of Mines.

Known holdings in public companies

CompanyDateNumber of sharesValuationValuation date
13/05/2025 3,98,579 ( 0.29% ) 852 959 $ 30/06/2025

Sean Roosen active positions

CompaniesPositionStart
OR ROYALTIES INC. Founder 01/04/2014
OSISKO GREEN ACQUISITION LIMITED Chief Executive Officer 08/07/2021
OSISKO DEVELOPMENT CORP. Chief Executive Officer 25/11/2020
Director/Board Member 04/06/2010
All active positions of Sean Roosen

Former positions of Sean Roosen

CompaniesPositionEnd
OSISKO MINING INC. Chairman 16/09/2020
VICTORIA GOLD CORP. Director/Board Member 23/06/2021
FALCO RESOURCES LTD. Chairman 20/03/2019
CONDOR ENERGIES INC. Chairman 04/03/2019
BARKERVILLE GOLD MINES LTD. Chairman 01/01/2019
See the detail of Sean Roosen's experience

Training of Sean Roosen

Haileybury School of Mines
Undergraduate Degree

Experiences
Positions held

Active

Inactive

Listed companies

Private companies

See the detail of Sean Roosen's experience

Connections

100 +

1st degree connections

34

1st degree companies

Male

Female

Members of the board

Executives

See the personal network

Linked companies

Listed companies15
CONDOR ENERGIES INC.

Energy Minerals

OR ROYALTIES INC.

Non-Energy Minerals

BLACK DRAGON GOLD CORP.

Non-Energy Minerals

OSISKO METALS INCORPORATED

Non-Energy Minerals

UNIGOLD INC.

Non-Energy Minerals

OSISKO DEVELOPMENT CORP.

Non-Energy Minerals

VICTORIA GOLD CORP.

Non-Energy Minerals

KGL RESOURCES LTD.

Non-Energy Minerals

HIGHLAND COPPER COMPANY INC.

Non-Energy Minerals

BONTERRA RESOURCES INC.

Non-Energy Minerals

FALCO RESOURCES LTD.

Non-Energy Minerals

GOLD TERRA RESOURCE CORP.

Non-Energy Minerals

MISTANGO RIVER RESOURCES INC.

Non-Energy Minerals

CORNISH METALS INC.

Non-Energy Minerals

BRUNSWICK EXPLORATION INC.

Non-Energy Minerals

Private companies18

Non-Energy Minerals

Non-Energy Minerals

Non-Energy Minerals

EurAsia Resource Value SE

EurAsia Resource Holdings AG

Miscellaneous

Non-Energy Minerals

Non-Energy Minerals

Non-Energy Minerals

Non-Energy Minerals

IRT Interconti Trading GmbH

Non-Energy Minerals

Non-Energy Minerals

Finance

Non-Energy Minerals

Non-Energy Minerals

Non-Energy Minerals

Energy Minerals

See company connections