Altius Announces Board and Management Renewal Measures Altius Minerals Corporation (ALS:TSX) (ATUSF: OTCQX) (“Altius” or the “Corporation”) congratulates two members of its senior management team on their retirements and wishes to report on senior

TSX: ALS | OTCQX: ATUSF Altius Minerals Corporation

September 30, 2025 | St. John’s, Newfoundland and Labrador

Altius Announces Board and Management Renewal Measures

Altius Minerals Corporation (ALS:TSX) (ATUSF: OTCQX) (“Altius” or the “Corporation”) congratulates

two members of its senior management team on their retirements and wishes to report on senior

management and board re-alignments.

Ben Lewis, Chief Financial Officer and Chad Wells, Vice President - Corporate Development (Project

Generation) will be retiring effective today, but will each continue in advisory roles to support related

succession initiatives and ongoing business activities. Mr. Wells also steps down as Corporate Secretary

to the Board.

Stephanie Hussey, currently Vice President Finance, has been appointed as the Corporation’s new Chief

Financial Officer.

Also effective today, John Baker, who has served as a director of the Corporation since its founding, and

since 2014 as its Executive Chairman, has stepped down from the Board and been appointed President

of the Corporation, while current lead independent director Fred Mifflin has assumed the role of

independent Chair of the Board. Flora Wood, Vice-President Investor Relations & Sustainability, has

added the Corporate Secretary role to her responsibilities. Brian Dalton has also committed to a minimum

five year extension of his contract to serve as Chief Executive Officer, subject to the ongoing discretion of

the board as it relates to appointing its senior executive officers.

Speaking on behalf of the board and management, Brian Dalton and John Baker commented that “Ben

and Chad have been wonderful members of the Altius team and family for 20 and 23 years respectively

and while we will all miss them in their current roles we wish them the very best in their retirements and

ongoing personal endeavours. Moreover, we are all grateful that both have agreed to take on consulting

advisory roles to help support the transition of those that they have mentored to succeed them and to

continue to provide bench depth, knowledge and experience to the entire Altius team.”

They then added, “We are all excited to have Stephanie step into the role of our CFO and are looking

forward to working with and supporting her as she takes on this increased responsibility. Stephanie has

demonstrated remarkable growth and development throughout her 12 years with Altius and we have

every confidence that her technical depth and positive and collaborative nature will see her continue to

excel in her new role.”

About Altius

Altius’s strategy is to create per share growth through a diversified portfolio of royalty assets that relate to

long life, high margin operations. This strategy further provides shareholders with exposures that are well

aligned with sustainability-related global growth trends including the electricity generation transition from

fossil fuel to renewables, transportation electrification, reduced emissions from steelmaking and increasing

agricultural yield requirements. These macro-trends each hold the potential to cause increased demand for

many of Altius’s commodity exposures including copper, renewable based electricity, several key battery

metals (lithium, nickel and cobalt), clean iron ore, and potash. In addition, Altius runs a successful Project

Generation business that originates mineral projects for sale to developers in exchange for equity positions

and royalties. Altius has 46, 276,054 common shares issued and outstanding that are listed on Canada’s

TSX: ALS | OTCQX: ATUSF Altius Minerals Corporation

Toronto Stock Exchange. It is included in each of the S&P/TSX Small Cap, the S&P/TSX Global Mining,

and the S&P/TSX Canadian Dividend Aristocrats indices.

For further information, please contact:

Flora Wood

Email: [email protected]

Tel: 1.877.576.2209

Direct: 1.416.346.9020