Brian Ostroff

President at ARIANNE PHOSPHATE INC.

Net worth: 1 M $ as of 2026-06-29

Non-Energy Minerals

Finance

Consumer Services

Profile

Brian Richard Ostroff is Executive Chairman at Madoro Metals Corp.
since 2021 and President & Director at Arianne Phosphate, Inc. since 2021.
Former roles include Managing Director at Windermere Capital (Canada), Inc. from 2009 to 2022 and Managing Partner at Goodrich Capital LLC.
Education includes an undergraduate degree from the University of Toronto, conferred in 1986.

Known holdings in public companies

Company	Date	Number of shares	Valuation	Valuation date
ARIANNE PHOSPHATE INC. 2.32%	2025-12-09	5,373,113 ( 2.32% )	1 M $	2026-06-29
MADORO METALS CORP 5.41%	2025-12-08	5,052,000 ( 5.41% )	161 664 $	2026-06-29

Brian Ostroff active positions

Companies	Position	Start
ARIANNE PHOSPHATE INC.	President	2021-05-04
MADORO METALS CORP.	Chairman	2021-01-20

All active positions of Brian Ostroff

Former positions of Brian Ostroff

Companies	Position	End
Windermere Capital (Canada), Inc. Windermere Capital (Canada), Inc. Investment ManagersFinance Windermere Capital focuses on building, managing and distributing investment funds and custom solutions. The firm’s Navigator Fund is an actively managed global natural resource fund that creates a core portfolio of long positions in global natural resource exploration, development and production companies. The Breakway Strategic Resource Fund is a vertically integrated mining investment fund which seeks opportunities that range from outright property acquisition to publicly traded entities.	Analyst-Equity	2022-05-31
Goodrich Capital LLC Goodrich Capital LLC Investment ManagersFinance Goodrich supports the growth and development of small- and middle-market companies through strategic and financial transactions such as growth funding, mergers and acquisitions, joint ventures, strategic partnerships, and advisory services. The firm targets the healthcare, consumer products, homeland security products and services, environmental, manufacturing, green technologies, and distribution sectors.	Corporate Officer/Principal	-

See the detail of Brian Ostroff's experience

Training of Brian Ostroff

Experiences
Positions held

Active

Inactive

Listed companies

Private companies

See the detail of Brian Ostroff's experience

Connections

1st degree connections

1st degree companies

Male

Female

Members of the board

Executives

See the personal network

Linked companies

Private companies	5
Madoro Metals Corp. Madoro Metals Corp. Precious MetalsNon-Energy Minerals Engages in the acquisition, exploration and development of mineral properties	Non-Energy Minerals
Arianne Phosphate, Inc. Arianne Phosphate, Inc. Other Metals/MineralsNon-Energy Minerals Specializes in extraction of phosphate rock	Non-Energy Minerals
University of Toronto University of Toronto Other Consumer ServicesConsumer Services Functions as a College/University	Consumer Services
Goodrich Capital LLC Goodrich Capital LLC Investment ManagersFinance Goodrich supports the growth and development of small- and middle-market companies through strategic and financial transactions such as growth funding, mergers and acquisitions, joint ventures, strategic partnerships, and advisory services. The firm targets the healthcare, consumer products, homeland security products and services, environmental, manufacturing, green technologies, and distribution sectors.	Finance
Windermere Capital (Canada), Inc. Windermere Capital (Canada), Inc. Investment ManagersFinance Windermere Capital focuses on building, managing and distributing investment funds and custom solutions. The firm’s Navigator Fund is an actively managed global natural resource fund that creates a core portfolio of long positions in global natural resource exploration, development and production companies. The Breakway Strategic Resource Fund is a vertically integrated mining investment fund which seeks opportunities that range from outright property acquisition to publicly traded entities.	Finance