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Altius Reports Q1 2026 Expected Attributable Revenue(1)

Financials

Altius Minerals Corporation TSX: ALS | OTCQX: ATUSF

April 21, 2026 | St. John’s, Newfoundland

Altius Reports Q1 2026 Expected Attributable Revenue(1)

All references in thousands of Canadian dollars, except per share amounts, unless otherwise indicated

Altius Minerals Corporation (ALS: TSX) (ATUSF: OTCQX) (“Altius” or the “Corporation”) expects to report Q1 2026

attributable royalty revenue(1) of approximately $26.4 million compared to $15.0 million in Q1 2025.

Royalty Revenue Summary

Summary of attributable royalty revenue(1) Q1 2026 Q4 2025 Q1 2025

Base metals $ 9,103 $ 4,098 $ 6,789

Potash 4,506 4,972 3,894

Lithium 5,429 94 51

Iron ore# 1,562 1,803 1,870

Electricity## 3,596 6,306 1,648

Interest and other 2,162 3,610 703

$ 26,358 $ 20,883 $ 14,955

(#) Labrador Iron Ore Royalty Corporation dividends received

(##) Effective 29% interest in renewable royalty revenue

Base metals (primarily copper) revenue of $9.1 million for the quarter reflects higher realized copper prices and timing of

copper stream deliveries from Chapada, as well as higher Voisey's Bay revenue.

The Corporation's preliminary cost of sales for the Chapada copper strea m, excluding any depletion, was $2.5 million for

Q1 2026.

Potash portfolio revenue during the first quarter of $4.5 million reflects higher realized prices than Q1 2025 and slightly

lower prices than in Q4 2025. Attributable portfolio production volumes were consistent with Q1 2025.

Lithium revenue of $5.4 million grew following the Corporation's acquisition of Lithium Royalty Corp. (LRC) on March 6,

2026. There are four operating royalties in the portfolio including the Goulamina, Grota do Cirilo, Tres Quebradas and

Mariana royalties. The Finniss project is also currently in the process of restarting with first concentrate shipments expected

in Q4 of this year.

Subsequent to March 31 the Corporation received US$30.5 million as a distribution from Waratah Capital Advisors managed

Royalty Capital Funds, relating to investments made by the Corporation during the founding and early development of LRC.

Iron ore royalty revenue in the form of dividends from Labrador Iron Ore Royalty Corp.("LIORC"), which serves as a pass-

through vehicle for royalty income and equity dividends related to the operations of Iron Ore Company of Canada ("IOC"),

was $1.6 million for the quarter, being negatively impacted by lower equity dividends received by LIORC from IOC.

Electricity royalty revenue of $3.6 million for the quarter reflects the continuing ramp up of operational stage portfolio

projects, income related to the financing of interconnection deposits as well as interest and other income. The Corporation's

Q4 2025 royalty revenue included an approximate $1 million payment to Titan Solar due to a tax equity financing milestone

as well as certain project sales (both non-recurring).

Altius Minerals Corporation TSX: ALS | OTCQX: ATUSF

Interest and other revenue reflects $2.1 million of inter est income during Q1 2026 on the Corporation's increased cash

balance.

Non GAAP Financial Measures

1. Management uses the following non -GAAP financial measures: attributable revenue, attributable royalty revenue, adjusted

earnings before interest, taxes, depreciation and amortization (adjusted EBITDA), adjusted operating cash flow and adjusted net

earnings (loss). Management uses these measures to monitor the financial performance of the Corporation and its operating

segments and believes these measures enable investors and analysts to compare the Corporation’s financial performance with

its competitors and/or evaluate the results of its underlying business. These measures are intended to provide additional

information, not to replace International Financial Reporting Standards (IFRS) measures, and do not have a standard definition

under IFRS and should not be considered in isolation or as a substitute for measures of performance prepared in accordance

with IFRS. As these measures do not have a standardized meaning, they may not be comparable to similar measures provided

by other companies. Further information on the composition and usefulness of each non -GAAP financial measure, including

reconciliation to their most directly comparabl e IFRS measures, is included in the non -GAAP financial measures section of our

MD&A.

First Quarter 2026 Financial Results Conference Call and Webcast Details

Additional details relating to individual royalty performances and asset level developments will be provided with the release

of our financial results, which will occur on May 12, 2026 after the close of market, with a conference call to follow on May 13,

2026.

Date: May 13, 2026

Time: 9:00 AM ET

Toll Free Dial-In Number: +1-800-717-1738

International Dial-In Number: +1-289-514-5100

Conference Call Title and ID: Altius Minerals Q1 2026 Financial Results, ID 92311

Webcast Link: Q1 2026 Financial Results

Conference Call URL (without operator assistance)1: Conference Call Link

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 55,741,478 common shares issued and outstanding that

are listed on Canada’s 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.

Forward-looking information

1 Participants can join the call without operator assistance and will receive an automatic callback after entering personal det ails

Altius Minerals Corporation TSX: ALS | OTCQX: ATUSF

This news release contains forward ‐looking information. The statements are based on reasonable assumptions and expectations of

management and Altius provides no assurance that actual events will meet management's expectations. In certain cases, forward‐looking

information may be identified by such terms as "anticip ates", "believes", "could", "estimates", "expects", "may", "shall", "will", or "would".

Although Altius believes the expectations expressed in such forward ‐looking statements are based on reasonable assumptions, such

statements are not guarantees of future performance and actual results or developments may differ materially from those projected.

Readers should not place undue reliance on forward -looking information. Altius does not undertake to update any forward -looking

information contained herein except in accordance with securities regulations.

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