Abacus Announces Appointment of Niina Makela as Chief Financial Officer

Press Release

Vancouver, BC. Abacus Mining & Exploration Corporation (“Abacus” or the “Company”) (TSXV:AME) is pleased to announce the appointment of Niina Makela as Chief Financial Officer (“CFO”) of the Company, effective June 1, 2025.

Ms. Makela is a Vancouver-based accountant with over 15 years of experience in the resource sector, including serving as Senior Accountant to the Company since 2012. In the past, she has served as CFO for Maritime Resources Corp. and as Controller/Senior Accountant to various private and public mineral exploration companies.

“On behalf of Abacus and its Board of Directors, I am very pleased to continue working with Ms. Makela in her new capacity of CFO.” stated Paul Anderson, President and CEO of Abacus.

The Company would also like to sincerely thank Jeannine Webb for her valuable contributions and dedication to the Company over the past 11 years. Ms. Webb will continue with the Company as an advisor to management and to the Board.

On Behalf of the Board,

ABACUS MINING & EXPLORATION CORPORATION

Paul G. Anderson, P.Geo. President, CEO and Director

About Abacus

Abacus is a mineral exploration and mine development company currently focused on copper and gold in B.C. and Nevada. The Company’s main asset is a 20% ownership interest, together with KGHM Polska Miedź S.A. (80%), in the proposed copper-gold Ajax Mine located southwest of Kamloops, B.C., which has undergone a joint provincial and federal environmental assessment process. On December 14, 2017, a decision was made by the B.C. Minister of Environment and Climate Change Strategy and the Minister of Energy, Mines and Petroleum Resources to decline to issue an environmental assessment certificate for the Project. KGHM have recently reopened an office in Kamloops, B.C. to facilitate First Nation, community and governmental engagement in order to advance the project towards a potential resubmission of the environmental application.

Abacus also owns a 100% interest in the Willow copper-gold property located near Yerington, Nevada, and it controls the contiguous Nev-Lorraine claims subject to a ten-year lease agreement.

For the latest reports and information on Abacus’ projects, please refer to the Company’s website at www.amemining.com.

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