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Altius Minerals Corporation Closes Transaction Increasing Ownership Interest in Great Bay Renewables and Announces Increased Credit Facility Altius Minerals Corporation (TSX: ALS) (OTCQX: ATUSF) (“Altius”) is pleased to announce the

Financings

TSX: ALS | OTCQX: ATUSF Altius Minerals Corporation

July 30, 2026 | St. John’s, Newfoundland

Altius Minerals Corporation Closes Transaction Increasing

Ownership Interest in Great Bay Renewables and Announces

Increased Credit Facility

Altius Minerals Corporation (TSX: ALS) (OTCQX: ATUSF) (“Altius”) is pleased to announce the

successful closing of the transaction, originally announced on July 10, 2026, to incre ase its effective

ownership interest in Great Bay Renewable Holdings, LLC and Great Bay Renewable Holdings II, LLC

(“collectively, “GBR”) to 50%.

Under the transaction, funds managed by affiliates of Apollo (NYSE: APO) sold their membership interests

in GBR to Northampton Capital Partners (“Northampton”) for total consideration of approximately US$390

million. Concurrently, Northampton sold its inte rest in Altius Renewable Royalties Corp. to Altius for

approximately US$168 million.

As a result of the tripartite transaction Altius’s effective interest in GBR has increased from 2 9% to 50%,

while Northampton’s effective interest has increased from 22% to 50%. Following the closing GBR is held

equally by Altius and Northampton, with Apollo funds no longer holding an interest in GBR. From Q3 2026

onward Altius will report its proportionate share of 50% of GBR revenues and expenses.

Amended Credit Facility

On July 24, 2026 the Corporation completed an amendment to increase its credit facility ("Credit Facility")

to C$350 million from C$225 million, being jointly led by Bank of Nova Scotia and Toronto-Dominion Bank,

with participation from National Bank of Canada, ATB Financial, Desjardins Financial Security Life

Assurance Company and Export Development Canada. Bank of Nova Scotia is the Administrative Agen t

for the Credit Facility. The previous term and revolving credit facility is replaced with a single revolving

facility with no principal repayments required. The debt balance currently outstanding of approximately

C$87 million was transferred to the amended Credit Facility with maturity being extended from August 2028

to July 2030. The Credit Facility is available for qualifying royalty acquisitions, streaming acquisitions and

other qualifying investments and will bear interest at variable rates , with pricing improvements based on

the total net debt ratio. Subsequent to the closing of this amendment the Corporation completed a draw

down on the Credit Facility of C$100 million in relation to the closing and funding of the GBR transaction.

Forward Looking Statements

This news release contains “forward -looking information” and “forward -looking statements” (collectively,

“forward-looking information”) within the meaning of applicable Canadian securities laws. This information

includes, but is not limited to, statements relating to the proposed share purchase agreement, the expected

timing of completion of the transaction, the satisfaction of closing conditions, and other statements that are

not historical facts.

In some cases, forward -looking information can be identified by the use of words such as “expects”,

“anticipates”, “believes”, “plans”, “intends”, “estimates”, “projects”, “forecasts”, “may”, “will”, “could”, “would”,

“should”, “potential”, “continue”, or similar expressions. Forward-looking information reflects management's

current expectations and is based on assumptions and factors believed by management to be reasonable

as of the date hereof.

TSX: ALS | OTCQX: ATUSF Altius Minerals Corporation

Forward-looking information is necessarily subject to known and unknown risks, uncertainties and other

factors that may cause actual results, performance or achievements to differ materially from those

expressed or implied by such forward -looking information. Such risks and uncertainties include, without

limitation: the failure to satisfy the conditions to completion of the transaction; the possibility that the

Arrangement may not be completed on the terms contemplated or at all; changes in applicable laws or

regulations; adverse market conditions; and other risks described in the Company's public disclosure

documents filed on SEDAR+.

Although the Company believes that the expectations reflected in the forward -looking information are

reasonable, there can be no assurance that such expectations will prove to be correct. Accordingly, readers

should not place undue reliance on forward-looking information. The forward-looking information contained

in this news release is made as of the date hereof and the Company undertakes no obligation to update or

revise any forward-looking information, except as required by applicable law.

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 global growth trends including increasing electricity-based market share within energy usage,

global infrastructure build and refurbishment growth, increased EAF based steelmaking, steadily increasing

agricultural fertilizer requirements and the enhanced appetite for financial asset diversification through

precious metals ownership. These macro-trends each hold the potential to cause higher demand for many

of Altius’s commodity exposures including potash, high purity iron ore, electricity, base metals, and gold. In

addition, Altius runs a successful Project Generation business that originates mineral projects for sale to

developers in exchange for royalties and that has a demonstrated track record of driving outsized direct

returns from its overall royalty investment portfolio. Altius has 58,748,220 common shares issued and

outstanding that are listed on Canada’s Toronto Stock Exchange. It is a member of the S&P/TSX Composite

and S&P/TSX Global Mining Indices and the S&P/TSX Canadian Dividend Aristocrats Index.

For further information, please contact:

Flora Wood

Email: [email protected]

Tel: 1.877.576.2209

Direct: 1.416.346.9020

Stephanie Hussey

Email: [email protected]

Tel: 1.877.576.2209