Metalla publishes 2026 asset handbook and shareholder letter

METALLA PUBLISHES 2026 ASSET HANDBOOK AND ANNUAL LETTER TO SHAREHOLDERS PR Newswire TSXV: MTA NYSE AMERICAN:  MTA VANCOUVER, BC , June 23, 2026 /PRNewswire/ - Metalla Royalty & Streaming Ltd. (" Metalla " or the " Company ") (NYSE American: MTA) (TSXV: MTA) is pleased to announce the release of its 2026 Asset Handbook outlining the Company's high-quality gold, silver, and copper production, development, and exploration assets, as well as Mineral Reserve and Mineral Resource data. Included in the Asset Handbook is the annual letter to shareholders. The Asset Handbook is available on the Company's website at www.metallaroyalty.com .

Brett Heath, Chief Executive Officer of Metalla commented: "Metalla's 2026 Asset Handbook is designed to give shareholders a clear view of the royalty portfolio we have spent the last decade building — high-quality royalties on long-life assets, operated by strong counterparties in established jurisdictions. Many of these interests were acquired during the quiet years of the cycle, when capital was scarce and the market was not yet underwriting the future cash-flow potential of world-class deposits. Today, the shift from financial assets to tangible assets is already well underway, and we believe Metalla's portfolio is beginning to show the operating leverage, embedded optionality, and long-term compounding potential that remains underappreciated.

Our focus remains disciplined: grow cash flow per share, protect the quality of the asset base, and surface value for all Metalla shareholders." ASSET HANDBOOK The 2026 Asset Handbook offers an updated in-depth look at Metalla's diverse and high-quality gold, silver, and copper royalty portfolio and the key assets that the Company believes will be the driving force behind its growth over the coming years. In just under ten years, Metalla has built a portfolio of ~100 royalties, primarily located in the world's top mining jurisdictions on Tier-1 long-life assets managed by some of the industry's largest and most well-capitalized mining companies. The Company's operating partners have added considerable value through exploration and development, which the Company believes will continue to unlock significant potential through new discoveries, reserve and resource additions, and mine life extensions and expansions, all at no additional cost to Metalla.

ABOUT METALLA Metalla was created to provide shareholders with leveraged precious and strategic metal exposure by acquiring royalties and streams. Our goal is to increase share value by accumulating a diversified portfolio of royalties and streams with attractive returns. Our strong foundation of current and future cash-generating asset base, combined with an experienced team, gives Metalla a path to become one of the leading royalty companies.

For further information, please visit our website at www.metallaroyalty.com . ON BEHALF OF METALLA ROYALTY & STREAMING LTD. (signed) "Brett Heath" Chief Executive Officer Website: www.metallaroyalty.com   Neither the TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies of the Exchange) accept responsibility for the adequacy or accuracy of this release.  Information contained on any website or document referred to or hyperlinked in this press release shall not be deemed to be a part of this press release. Technical and Third-Party Information Metalla has limited, if any, access to the properties on which Metalla holds a royalty, stream or other interest.

Metalla is dependent on (i) the operators of the mines or properties and their qualified persons to provide technical or other information to Metalla, or (ii) publicly available information to prepare disclosure pertaining to properties and operations on the mines or properties on which Metalla holds a royalty, stream or other interest, and generally has limited or no ability to independently verify such information. Although Metalla does not have any knowledge that such information may not be accurate, there can be no assurance that such third-party information is complete or accurate. Some information publicly reported by operators may relate to a larger property than the area covered by Metalla's royalty, stream or other interests.

Metalla's royalty, stream or other interests can cover less than 100% and sometimes only a portion of the publicly reported mineral reserves, resources and production of a property. Unless otherwise indicated, the technical and scientific disclosure contained or referenced in this press release, ‎ including any ‎ references to mineral resources or mineral reserves, was prepared in accordance with Canadian ‎ National Instrument 43-101 ‎ , which differs significantly from the requirements of the U.S. Securities and ‎ Exchange Commission (the "SEC") ‎ applicable to U.S. domestic issuers. Accordingly, the scientific and technical ‎ information contained or referenced in this press ‎ release may not be comparable to similar information made ‎ public by U.S. companies subject to the reporting and ‎ disclosure requirements of the SEC. ‎ "Inferred mineral resources" have a great amount of uncertainty as to their existence and great uncertainty as to ‎ their ‎ economic and legal feasibility.

It cannot be assumed that all or any part of an inferred mineral resource will ‎ ever be ‎ upgraded to a higher category. Historical results or feasibility models presented herein are not guarantees ‎ or expectations of ‎ future performance. ‎ CAUTIONARY NOTE REGARDING FORWARD-LOOKING STATEMENTS This release contains forward-looking statements and forward-looking information (collectively, "forward-looking statements") ‎ within the meaning of applicable securities legislation.   ‎ Often, but not always, forward-looking statements can be identified by the use of words such as "plans", "expects", "is expected", "budgets", "scheduled", "estimates", "forecasts", "predicts", "projects", "intends", "targets", "aims", "anticipates" or "believes" or variations (including negative variations) of such words and phrases or may be identified by statements to the effect that certain actions "may", "could", "should", "would", "might" or "will" be taken, occur, or be achieved. Forward-looking statements include, but are not limited to, the statements that: the future cash-flow potential of Metalla's interests; the long-term compounding potential of Metalla's portfolio; that the key assets identified in the Asset Handbook are the driving force behind Metalla's growth; that the operating partners will continue to unlock significant potential through new discoveries; the expectations generally of Metalla regarding the property owners/operators and the authors of relevant technical reports and studies with respect to the mineral projects in which Metalla has an interest, including without limitation, estimates of mineral resources and mineral reserves and updates thereto, production, mine life, NPV, IRR, costs, drilling, development, permitting, water sourcing, commodity mix and prices, and the timing thereof; ‎ ‎ future opportunities and acquisitions; ‎ future exploration, financing, development, production and other anticipated developments on the properties in which the ‎ Company has or has agreed to acquire an interest; ‎ future growth, increased share value, cash generation and returns; and Metalla having a path to becoming a leading gold and silver royalty company.

Forward-looking statements and information are based on forecasts of future results, estimates of amounts not yet determinable and assumptions that, while believed by management to be reasonable, are inherently subject to significant business, economic and competitive uncertainties, and contingencies. Forward-looking statements and information are subject to various known and unknown risks and uncertainties, many of which are beyond the ability of Metalla to control or predict, that may cause Metalla's actual results, performance or achievements to be materially different from those expressed or implied thereby, and are developed based on assumptions about such risks, uncertainties and other factors set out herein, including but not limited to: that the future cash-flow potential of Metalla's interests and the long-term compounding potential of Metalla's portfolio may not be realized; that the key assets identified in the Asset Handbook will not be the driving force behind Metalla's growth; that new discoveries may not occur or unlock significant potential; the absence of control over mining operations from which Metalla will purchase precious metals or from which it will receive stream or royalty payments and risks related to those mining operations, including risks related to international operations, government and environmental regulation, delays in mine construction and operations, actual results of mining and current exploration activities, conclusions of economic evaluations and changes in project parameters as plans are refined; problems related to the ability to market precious metals or other metals; industry conditions, including commodity price fluctuations, interest and exchange rate fluctuations; interpretation by government entities of tax laws or the implementation of new tax laws; regulatory, political or economic developments in any of the countries where properties in which Metalla holds a royalty, stream or other interest are located or through which they are held; risks related to the operators of the properties in which Metalla holds a royalty or stream or other interest, including changes in the ownership and control of such operators; risks related to global pandemics,   and the spread of viruses or pathogens; influence of macroeconomic developments; business opportunities that become available to, or are pursued by Metalla; reduced access to debt and equity capital; litigation; title, permit or license disputes related to interests on any of the properties in which Metalla holds a royalty, stream or other interest; the volatility of the stock market; competition; future sales or issuances of debt or equity securities; use of proceeds; dividend policy and future payment of dividends; liquidity; market for securities; enforcement of civil judgments; and risks relating to Metalla potentially being a passive foreign investment company within the meaning of U.S. federal tax laws; and the other risks and uncertainties disclosed under the heading "Risk Factors" in the Company's most recent annual information form, annual report on Form 40-F and other documents filed with or submitted to the Canadian securities regulatory authorities on the SEDAR+ website at www.sedarplus.ca and the U.S. Securities and Exchange Commission on the EDGAR website at www.sec.gov . Metalla undertakes no obligation to update forward-looking information except as required by applicable law.

Such forward-looking information represents management's best judgment based on information currently available. No forward-looking statement can be guaranteed, and actual future results may vary materially. Accordingly, readers are advised not to place undue reliance on forward-looking statements.

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