Aura Minerals releases Almas, MSG and Borborema NI 43-101 Technical Reports

ROAD TOWN, British Virgin Islands, June 23, 2026 – Aura Minerals Inc. (NASDAQ: AUGO) (B3: AURA33) (“Aura” or the “Company”) is pleased to announce that, in connection with a review by staff of the Ontario Securities Commission, it has filed updated technical reports (the "Reports") for its mines of Almas, MSG (Mineração Serra Grande) and Borborema. The Reports can be found on the Company's website at www.auraminerals.com or under the Company's issuer profile at www.sedarplus.ca. The Reports have been prepared in accordance with the disclosure and reporting requirements set forth in the Canadian Securities Administrators' National Instrument 43-101 – Standards of Disclosure for Mineral Projects ("NI 43-101"), Companion Policy 43-101CP to NI 43-101 and Form 43-101F1 Technical Report, as well as the Canadian Institute of Mining, Metallurgy and Petroleum (CIM) Definition Standards for Mineral Resources and Mineral Reserves.

Qualified Persons

The Borborema Technical Report, entitled “Technical Report (NI 43-101) on the Feasibility Study for the Borborema Gold Project, Currais Novos Municipality, Rio Grande do Norte, Brazil” and dated March 15, 2026, with an effective date of December 31, 2025, was prepared for Aura by B. Tomaselli B.Sc., FAusIMM (Deswik, Belo Horizonte, Brazil), SRK Consulting (U.S.), Inc., Denver, USA., F. Ghazanfari, P. Geo. (Aura Minerals), and H. Delboni Jr. Ph.D. (MAusIMM – CP Metallurgy).

The Almas Technical Report, entitled “NI 43-101 Almas Project, Tocantins State, Brazil” and dated March 30, 2026, with an effective date of December 31, 2025, was prepared for Aura by Rosmery J. Cárdenas Barzola, P.Eng. Priscila Artioli, MAusIMM (CP(Min)), Allan W. Read, P.Eng, Linda Dufour, P.Eng., and Derek J. Riehm, M.A.Sc., P.Eng, all from SLR Consulting (Canada & Brazil) Ltd.

The MSG Technical Report, entitled “NI 43-101 Technical Report on Mineral Resource and Mineral Reserve Mineração Serra Grande Project Goiás, Brazil” and dated May 13, 2026, with an effective date of November 30, 2025, was prepared for Aura by Branca Horta de Almeida Abrantes, MAIG (B.Sc. Geog.), Guilherme Gomides Ferreira, MAIG (B.Sc. Min. Eng.), Hugo Ribeiro de Andrade Filho, FAusIMM (B.Sc. Min. Eng.), Leonardo de Moraes Soares, MAIG (B.Sc. Geo.), Luiz Carlos Pinheiro Clerot, MAIG (B.Sc. Geo.), Paulo Roberto Bergmann Moreira, FAusIMM (B.Sc. Min. Eng.),Porfirio Cabaleiro Rodriguez, FAIG, FAusIMM (B.Sc. Min. Eng.) all from GE21 Consultoria Mineral Ltda.

About Aura 360° Mining

Aura is focused on mining in complete terms – thinking holistically about how its business impacts and benefits every one of our stakeholders: our company, our shareholders, our employees, and the countries and communities we serve. We call this 360° Mining.

Aura is a company focused on the development and operation of gold and base metal projects in the Americas. The Company's six operating assets include Minosa gold mine in Honduras; Almas, Apoena, Borborema and MSG gold mines in Brazil; and Aranzazu, a copper, gold, and silver mine in Mexico. Additionally, the Company owns Era Dorada, a gold project in Guatemala; Tolda Fria, a gold project in Colombia; and three projects in Brazil: Matupá, which is under development; and the Carajás copper project in the Carajás region, in the exploration phase.

For further information, please visit Aura’s website at www.auraminerals.com or contact:

Investor Relations [email protected]

Caution Regarding Mineral Resource and Mineral Reserve Estimates

The figures for mineral resources and reserves contained herein are estimates only and no assurance can be given that the anticipated tonnages and grades will be achieved, that the indicated level of recovery will be realized or that the mineral resources and reserves could be mined or processed profitably. Actual reserves, if any, may not conform to geological, metallurgical or other expectations, and the volume and grade of ore recovered may be below the estimated levels. There are numerous uncertainties inherent in estimating mineral resources and reserves, including many factors beyond the Company’s

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control. Such estimation is a subjective process, and the accuracy of any reserve or resource estimate is a function of the quantity and quality of available data and of the assumptions made and judgments used in engineering and geological interpretation. Short-term operating factors relating to the mineral resources and reserves, such as the need for orderly development of the ore bodies or the processing of new or different ore grades, may cause the mining operation to be unprofitable in any particular accounting period. In addition, there can be no assurance that metal recoveries in small scale laboratory tests will be duplicated in larger scale tests under on-site conditions or during production. Lower market prices, increased production costs, the presence of deleterious elements, reduced recovery rates and other factors may result in revision of its resource and reserve estimates from time to time or may render the Company’s resources and reserves uneconomic to exploit. Resource and reserve data is not indicative of future results of operations. If the Company’s actual mineral resources and reserves are less than current estimates or if the Company fails to develop its resource base through the realization of identified mineralized potential, its results of operations or financial condition may be materially and adversely affected.

Caution Regarding Forward-Looking Information and Statements

All statements other than statements of historical fact are forward-looking statements. Forward-looking statements relate to future events or future performance and reflect the Company’s current estimates, predictions, expectations or beliefs regarding future events and include, without limitation, statements with respect to future production, life of mine and mineral and resource and mineral reserve estimates on the Almas Mine, MSG Mine and Borborema Mine. Often, but not always, forward-looking statements may be identified by the use of words such as “expects”, “anticipates”, “plans”, “projects”, “estimates”, “assumes”, “intends”, “strategy”, “goals”, “objectives” or variations thereof or stating that certain actions, events or results “may”, “could”, “would”, “might” or “will” be taken, occur or be achieved, or the negative of any of these terms and similar expressions.

Forward-looking information is based upon estimates and assumptions of management in light of management’s experience and perception of trends, current conditions and expected developments, as well as other factors that management believes to be relevant and reasonable in the circumstances, as of the date of this news release including, without limitation, assumptions about: exploration development, and production from the Company’s Aranzazu Mine, Almas Mine and Minosa; future prices of gold and other metal prices; the timing and results of exploration and drilling programs, and technical and economic studies; completion of its drilling programs; the accuracy of any Mineral Reserve and Mineral Resource estimates; the geology of Almas Mine, MSG Mine and Borborema Mine being as described in the applicable technical reports; production costs; the accuracy of budgeted exploration and development costs and expenditures; the price of other commodities such as fuel; future currency exchange rates and interest rates; operating conditions being favourable such that the Company is able to operate in a safe, efficient and effective manner; political and regulatory stability; the receipt of governmental, regulatory and third party approvals, licenses and permits on favourable terms; obtaining required renewals for existing approvals, licenses and permits on favourable terms; requirements under applicable laws; sustained labour stability; stability in financial and capital goods markets; inflation rates; availability of labour and equipment; positive relations with local groups, and the Company’s ability to meet its obligations under its agreements with such groups; and satisfying the terms and conditions of the Company’s current loan arrangements. While the Company considers these assumptions to be reasonable, the assumptions are inherently subject to significant business, social, economic, political, regulatory, competitive and other risks and uncertainties, contingencies and other factors that could cause actual actions, events, conditions, results, performance or achievements to be materially different from those projected in the forward-looking information. Many assumptions are based on factors and events that are not within the control of the Company and there is no assurance they will prove to be correct. For further information of these and other risk factors, please see the “Risk Factors” section of the Company’s most recent annual information form, available on SEDAR+ at www.sedarplus.ca.

The Company cautions that the foregoing lists of important assumptions and factors are not exhaustive. Other events or circumstances could cause actual results to differ materially from those estimated or projected and expressed in, or implied by, the forward-looking information contained herein. There can be no assurance that forward-looking information will prove to be accurate, as actual results and future events could differ materially from those anticipated in such information. Accordingly, readers should not place undue reliance on forward-looking information.

Forward looking information contained herein is made as of the date of this news release and the Company disclaims any obligation to update or revise any forward-looking information, whether as a result of new information, future events or results or otherwise, except as and to the extent required by applicable securities laws