Acquisition of Excessive-Grade Copper Undertaking Adjoining to White Cliff Minerals

• 19% enhance in confirmed and possible mineral reserves as in comparison with the 2023 estimate, together with a 24% enhance on the Santo Antônio Vein.
• Confirmed and possible mineral reserve compound annual progress charge (“CAGR”) of roughly 62% from 2018 to 2024.
• 26% enhance in measured and indicated mineral assets, inclusive of mineral reserves, as in comparison with the 2023 estimate, together with a 31% enhance on the Santo Antônio Vein.
• Extra mill capability of roughly 25% continues to supply additional growth potential within the near- and medium-term.

“Our ongoing exploration program on the Xavantina Operations continues to ship distinctive outcomes,” acknowledged David Strang, Chief Govt Officer. “Once we acquired this asset in 2016, it had no mineral reserves, no mine life, and annual manufacturing of simply 25,000 ounces. Now we have since reworked it into a sturdy operation with almost 600,000 ounces of measured and indicated assets, together with 459,000 ounces of confirmed and possible reserves. The profitable completion of our NX 60 Initiative in 2023, highlighted by first manufacturing from the Matinha Vein, was a significant milestone, positioning Xavantina to maintain annual manufacturing of roughly 55,000 to 60,000 ounces within the years forward.

“We’re equally enthusiastic about Xavantina’s untapped potential, each close to the mine and regionally. Our twin technique stays centered on extending mine life and discovering new vein buildings to increase mine and mill feed, enabling us to totally make the most of the mill’s put in capability of as much as 300,000 tonnes each year.”

Xavantina Operations Confirmed & Possible Mineral Reserve Evolution Since IPO

Observe: Mineral reserve estimates had been ready in accordance with the Canadian Institute of Mining, Metallurgy and Petroleum (“CIM”) Definition Requirements for Mineral Assets and Mineral Reserves, adopted by the CIM Council on Might 10, 2014 (the “CIM Requirements”), and the CIM Estimation of Mineral Assets and Mineral Reserves Finest Observe Tips, adopted by CIM Council on November 29, 2019 (the “CIM Tips”), utilizing geostatistical and/or classical strategies, plus financial and mining parameters acceptable for the deposit. Please confer with the Notes on Mineral Reserves and Mineral Assets part of this press launch for a dialogue on the assumptions, parameters and strategies used to estimate the mineral reserves for 2024. 2024 mineral reserve estimate efficient date of June 30, 2024. Please see the 2018 Xavantina Technical Report, the 2019 Xavantina Technical Report, the 2020 Xavantina Technical Report, the January 2022 Press Launch, the 2022 Xavantina Technical Report and the 2023 AIF, as relevant and as outlined under, for a dialogue on the assumptions, parameters and strategies used to estimate the mineral reserves for 2018, 2019, 2020, 2021, 2022 and 2023, respectively. All figures have been rounded to the relative accuracy of the estimates.

2024 MINERAL RESERVE AND RESOURCE ESTIMATE

_{Observe: 2024 mineral reserve and useful resource estimates are efficient as at June 30, 2024. 2023 mineral reserve and useful resource estimates are efficient as at December 31, 2023. Introduced mineral assets are inclusive of mineral reserves. All figures have been rounded to mirror the relative accuracy of the estimates. Summed quantities might not add as a consequence of rounding. Mineral assets that aren’t mineral reserves don’t have a demonstrated financial viability. See under notes on mineral reserve and useful resource estimates for extra technical and scientific info.}

NOTES ON MINERAL RESERVES AND RESOURCES

The 2024 mineral reserve and mineral useful resource estimates are efficient as at June 30, 2024. Mineral assets are introduced, together with mineral reserves. All figures have been rounded to the relative accuracy of the estimates. Summed quantities might not add as a consequence of rounding. Mineral assets that aren’t mineral reserves don’t have a demonstrated financial viability.

The 2024 mineral reserve and useful resource estimates for the Xavantina Operations are ready beneath the supervision of and verified by Mr. Cid Gonçalves Monteiro Filho, SME RM (04317974), MAIG (No. 8444), FAusIMM (No. 329148) and Useful resource Supervisor of the Firm who’s a “certified individual” inside the meanings of NI 43-101.

Reference herein of $ or USD is to United States {dollars} and BRL is to Brazilian reais. Mineral Reserves for the Xavantina Operations have been estimated utilizing a gold price of $1,900/oz, and the trade charge used for mineral reserve and useful resource estimates was USD/BRL 5.10.

Grade shells utilizing a worth of 1.20 gpt gold had been used to generate a 3D mineralization mannequin of the Xavantina Operations. Inside the grade shells, mineral assets had been estimated utilizing unusual kriging inside 10 meter by 10 meter by 2 meter block dimension, with a minimal sub- block dimension of 1.0 meter by 1.0 meter by 0.5 meter, and the mineral useful resource estimate was constrained utilizing a minimal stope dimension of two.0 meters by 2.0 meters by 1.5 meters, a cut-off of 1.20 gpt based mostly on underground mining and processing prices of US$72 per tonne and a gold worth of US$1,900 per ounce.

The 2024 mineral reserve estimates had been ready in accordance with the CIM Requirements and the CIM Tips, utilizing geostatistical and/or classical strategies, plus financial and mining parameters acceptable for the deposit. Mineral reserves are the financial portion of the measured and indicated mineral assets. Mineral reserve estimates embrace operational dilution of 17.4% plus deliberate dilution of roughly 8.5% inside every stope for room- and-pillar mining areas and operational dilution of three.2% plus deliberate dilution of 21.2% for cut-and-fill mining areas. Mining restoration of 92.5% and 94.7% assumed for room-and-pillar and cut-and-fill areas, respectively. Sensible mining shapes (wireframes) had been designed utilizing geological wireframes / mineral useful resource block fashions as a information.

The place relevant, for scientific and technical info on historic mineral useful resource and reserve estimates on the Xavantina Operations, please confer with the next reviews:

• The “Xavantina Operations – Replace Info with respect to the Xavantina Operations” part inside the Firm’s 2023 Annual Info Kind dated March 7, 2024, ready beneath the supervision of and verified by Mr. Cid Gonçalves Monteiro Filho, SME RM (04317974), MAIG (No. 8444), FAusIMM (No. 329148) and Useful resource Supervisor of the Firm (the “2023 AIF”) for technical info and assumptions associated to the 2023 mineral reserve and mineral useful resource estimate, with an efficient date of December 31, 2023.
• The NI 43-101 technical report entitled “Technical Report on the Xavantina Operations, Mato Grosso, Brazil” dated Might 12, 2023 with an efficient date of October 31, 2022, ready by Porfirio Cabaleiro Rodrigues, FAIG, Leonardo de Moraes Soares, MAIG and Guilherme Gomides Ferreira, MAIG, all of GE21 Consultoria Mineral Ltda. (“GE21”) for technical info and assumptions associated to the 2022 mineral reserve and mineral useful resource estimate (the “2022 Xavantina Technical Report”).
• The Firm’s Press Launch dated January 6, 2022, for technical info and assumptions associated to the 2021 mineral reserve and mineral useful resource estimate, with an efficient date of September 30, 2021 ready by or beneath the supervision of and verified by Mr. Emerson Ricardo Re, MSc, MBA, MAusIMM (CP) (No. 305892), Registered Member (No. 0138) (Chilean Mining Fee) and Useful resource Supervisor of the Firm as on the date of the press launch, who was a Certified Individual as such time period is outlined beneath NI 43-101 (the “January 2022 Press Launch”).
• The NI 43-101 technical report entitled “Mineral Useful resource and Mineral Reserve Estimate of the NX Gold Mine, Nova Xavantina” dated January 8, 2021, with an efficient date of September 30, 2020, ready by Porfirio Cabaleiro Rodriguez, MAIG, Leonardo de Moraes Soares, MAIG, Bernardo Horta Cerqueira Viana, MAIG, Paulo Roberto Bergmann, FAusIMM, all of GE21 for technical info and assumptions associated to the 2020 mineral reserve and mineral useful resource estimate (the “2020 Xavantina Technical Report”).
• The NI 43-101 technical report entitled “Mineral Useful resource and Mineral Reserve Estimate of the NX Gold Mine, Nova Xavantina” dated February 3, 2020 with an efficient date of September 30, 2019, ready by Porfirio Cabaleiro Rodrigues, FAIG, Leonardo de Moraes Soares, MAIG and Paulo Roberto Bergmann, all of GE21 for technical info and assumptions associated to the 2019 mineral reserve and mineral useful resource estimate (the “2019 Xavantina Technical Report”).
• The NI 43-101 technical report entitled “Mineral Useful resource and Mineral Reserve Estimate of the NX Gold Mine, Nova Xavantina” dated January 21, 2019 with an efficient date of August 31, 2018, ready by Porfirio Cabaleiro Rodrigues, FAIG, Leonardo Apparicio da Silva, MAIG and Leonardo de Moraes Soares, MAIG, all of GE21 for technical info and assumptions associated to the 2018 mineral reserve and mineral useful resource estimate (the “2018 Xavantina Technical Report”).

QUALIFIED PERSONS

Mr. Cid Gonçalves Monteiro Filho, SME RM (04317974), MAIG (No. 8444), FAusIMM (No. 329148) has reviewed, verified and permitted the scientific and technical info contained on this press launch, together with the sampling, analytical and check knowledge underlying the knowledge contained on this press launch. Mr. Monteiro is Useful resource Supervisor of the Firm and is a “certified individual” inside the meanings of NI 43-101.

QUALITY ASSURANCE & QUALITY CONTROL

Present QA/QC Program

On the Xavantina Operations, the Firm is at present drilling underground with third-party contracted core drill rigs. Throughout the interval from October 2022 to June 2024, third get together drill rigs had been operated by Belief Drilling Options and Servitec Foraco Sondagem S.A. who’re unbiased of the Firm. Drill core is logged, photographed and break up in half utilizing a diamond core noticed at our safe core logging and storage amenities. Half of the drill core is retained on website and the opposite half-core is used for evaluation, with samples collected on a minimal of 0.2 meters and a most of two.0 meters with a median size of 0.5 meters. Sampling commences not less than 1.0 meter earlier than the beginning of the mineralized zone and continues not less than 1.0 meter past the restrict of the mineralized zone. Pattern assortment is carried out at our core logging amenities with all pattern preparation carried out at ALS Brasil Ltda.’s laboratory or SGS Geosol – Laboratórios Ltda’s laboratory, each of that are positioned in Goiânia, Brazil. Samples are analyzed by the licensed laboratories of ALS Peru S.A. or SGS Geosol – Laboratórios Ltda, each of whom are unbiased of the Firm. Gold content material is preferentially decided utilizing display screen fireplace assay. If the pattern is not sufficiently weighted, fireplace assay is used. All pattern outcomes used within the preparation of the 2024 up to date mineral useful resource and reserve estimate have been monitored by way of a high quality assurance and high quality management (“QA/QC”) program that features the insertion of licensed requirements, blanks and area duplicates at a charge of 1 commonplace, one clean, and one area duplicate pattern per each 20 samples for a blended charge of roughly 5%.

QA/QC Validation

The QA/QC validation course of undertaken for the 2024 up to date mineral useful resource and reserve estimates for the Xavantina Operations is in line with the method set out within the 2022 Xavantina Technical Report.

ABOUT ERO COPPER CORP

Ero Copper is a high-margin, high-growth copper producer with operations in Brazil and company headquarters in Vancouver, B.C. The Firm’s main asset is a 99.6% curiosity within the Brazilian copper mining firm, Mineração Caraíba S.A. (“MCSA”), 100% proprietor of the Firm’s Caraíba Operations, that are positioned within the Curaçá Valley, Bahia State, Brazil, and the Tucumã Operation, an open pit copper mine positioned in Pará State, Brazil. The Firm additionally owns 97.6% of NX Gold S.A. (“NX Gold”) which owns the Xavantina Operations, an working gold and silver mine positioned in Mato Grosso State, Brazil. In July 2024, the Firm signed a definitive earn-in settlement with Vale Base Metals for a 60% curiosity within the Furnas Copper-Gold Undertaking, positioned within the Carajás Mineral Province in Pará State, Brazil. For extra info on the earn-in settlement, please see the Firm’s press releases dated October 30, 2023 and July 22, 2024. Extra info on the Firm and its operations, together with technical reviews on the Caraíba Operations, Xavantina Operations, Tucumã Operation and the Furnas Copper-Gold Undertaking, could be discovered on the Firm’s web site ( www.erocopper.com), on SEDAR+ ( www.sedarplus.ca/landingpage/) and on EDGAR ( www.sec.gov). The Firm’s shares are publicly traded on the Toronto Inventory Change and the New York Inventory Change beneath the image “ERO”.

FOR MORE INFORMATION, PLEASE CONTACT

Courtney Lynn, SVP, Company Improvement, Investor Relations & Sustainability (604) 335-7504
info@erocopper.com

CAUTION REGARDING FORWARD LOOKING INFORMATION AND STATEMENTS

This press launch comprises “forward-looking statements” inside the that means of america Personal Securities Litigation Reform Act of 1995 and “forward-looking info” inside the that means of relevant Canadian securities laws (collectively, “forward-looking statements”). Ahead-looking statements embrace statements that use forward-looking terminology resembling “might”, “may”, “would”, “will”, “ought to”, “intend”, “goal”, “plan”, “count on”, “finances”, “estimate”, “forecast”, “schedule”, “anticipate”, “consider”, “proceed”, “potential”, “view” or the adverse or grammatical variation thereof or different variations thereof or comparable terminology. Ahead-looking statements might embrace, however will not be restricted to, statements with respect to the Firm’s anticipated manufacturing on the Xavantina Operations; the estimation of mineral reserves and mineral assets; the invention of extra mineralized veins and the related constructive affect on throughput charges; the importance of any specific exploration program or consequence and the Firm’s expectations for present and future exploration plans together with, however not restricted to, deliberate areas of extra exploration and the potential to transform any portion of the inferred mineral useful resource base to economically viable mineral reserves; and every other assertion which will predict, forecast, point out or indicate future plans, intentions, ranges of exercise, outcomes, efficiency or achievements.

Ahead-looking statements will not be a assure of future efficiency. There could be no assurance that forward-looking statements will show to be correct, as precise outcomes and future occasions may differ materially from these anticipated in such statements. Ahead-looking statements contain statements concerning the future and are inherently unsure, and the Firm’s precise outcomes, achievements or different future occasions or situations might differ materially from these mirrored within the forward-looking statements as a consequence of quite a lot of dangers, uncertainties and different components, together with, with out limitation, these referred to herein and within the Firm’s most up-to-date Annual Info Kind beneath the heading “Threat Elements”.

The Firm’s forward-looking statements are based mostly on the assumptions, beliefs, expectations and opinions of administration on the date the statements are made, lots of which can be tough to foretell and past the Firm’s management. In reference to the forward-looking statements contained on this press launch and within the AIF, the Firm has made sure assumptions about, amongst different issues: beneficial fairness and debt capital markets; the flexibility to lift any vital extra capital on cheap phrases to advance the manufacturing, growth and exploration of the Firm’s properties and property; future costs of copper, gold and different steel costs; the timing and outcomes of exploration and drilling packages; the accuracy of any mineral reserve and mineral useful resource estimates; the geology of the Caraíba Operations, the Xavantina Operations, the Tucumã Operation and the Furnas Copper-Gold Undertaking being as described within the respective technical report for every property; manufacturing prices; the accuracy of budgeted exploration, growth and building prices and expenditures; the worth of different commodities resembling gas; future forex trade charges and rates of interest; working situations being beneficial such that the Firm is ready to function in a secure, environment friendly and efficient method; work pressure persevering with to stay wholesome within the face of prevailing epidemics, pandemics or different well being dangers, political and regulatory stability; the receipt of governmental, regulatory and third get together approvals, licenses and permits on beneficial phrases; acquiring required renewals for present approvals, licenses and permits on beneficial phrases; necessities beneath relevant legal guidelines; sustained labour stability; stability in monetary and capital items markets; availability of kit; constructive relations with native teams and the Firm’s potential to satisfy its obligations beneath its agreements with such teams; and satisfying the phrases and situations of the Firm’s present mortgage preparations. Though the Firm believes that the assumptions inherent in forward-looking statements are cheap as of the date of this press launch, these assumptions are topic to vital enterprise, social, financial, political, regulatory, aggressive and different dangers and uncertainties, contingencies and different components that would trigger precise actions, occasions, situations, outcomes, efficiency or achievements to be materially completely different from these projected within the forward-looking statements. The Firm cautions that the foregoing checklist of assumptions is just not exhaustive. Different occasions or circumstances may trigger precise outcomes to vary materially from these estimated or projected and expressed in, or implied by, the forward-looking statements contained on this press launch. There could be no assurance that forward-looking statements will show to be correct, as precise outcomes and future occasions may differ materially from these anticipated in such statements. Accordingly, readers shouldn’t place undue reliance on forward-looking statements.

Ahead-looking statements contained herein are made as of the date of this press launch and the Firm disclaims any obligation to replace or revise any forward-looking assertion, whether or not because of new info, future occasions or outcomes or in any other case, besides as and to the extent required by relevant securities legal guidelines.

CAUTIONARY NOTES REGARDING MINERAL RESOURCE AND MINERAL RESERVE ESTIMATES

Except in any other case indicated, all reserve and useful resource estimates included on this press launch and the paperwork integrated by reference herein have been ready in accordance with Nationwide Instrument 43-101, Requirements of Disclosure for Mineral Tasks (“NI 43-101”) and the Canadian Institute of Mining, Metallurgy and Petroleum (the “CIM”) — CIM Definition Requirements on Mineral Assets and Mineral Reserves, adopted by the CIM Council, as amended (the “CIM Requirements”). NI 43-101 is a rule developed by the Canadian Securities Directors that establishes requirements for all public disclosure an issuer makes of scientific and technical info regarding mineral initiatives. Canadian requirements, together with NI 43-101, differ considerably from the necessities of america Securities and Change Fee (the “SEC”), and reserve and useful resource info included herein might not be akin to comparable info disclosed by U.S. firms. Particularly, and with out limiting the generality of the foregoing, this press launch and the paperwork integrated by reference herein use the phrases “measured assets,” “indicated assets” and “inferred assets” as outlined in accordance with NI 43-101 and the CIM Requirements.

Additional to current amendments, mineral property disclosure necessities in america (the “U.S. Guidelines”) are ruled by subpart 1300 of Regulation S-Okay of the U.S. Securities Act of 1933, as amended (the “U.S. Securities Act”) which differ from the CIM Requirements. As a overseas personal issuer that’s eligible to file reviews with the SEC pursuant to the multi-jurisdictional disclosure system (the “MJDS”), Ero is just not required to supply disclosure on its mineral properties beneath the U.S. Guidelines and can proceed to supply disclosure beneath NI 43-101 and the CIM Requirements. If Ero ceases to be a overseas personal issuer or loses its eligibility to file its annual report on Kind 40-F pursuant to the MJDS, then Ero will likely be topic to the U.S. Guidelines, which differ from the necessities of NI 43-101 and the CIM Requirements.

Pursuant to the brand new U.S. Guidelines, the SEC acknowledges estimates of “measured mineral assets”, “indicated mineral assets” and “inferred mineral assets.” As well as, the definitions of “confirmed mineral reserves” and “possible mineral reserves” beneath the U.S. Guidelines at the moment are “considerably comparable” to the corresponding requirements beneath NI 43-101. Mineralization described utilizing these phrases has a higher quantity of uncertainty as to its existence and feasibility than mineralization that has been characterised as reserves. Accordingly, U.S. buyers are cautioned to not assume that any measured mineral assets, indicated mineral assets, or inferred mineral assets that Ero reviews are or will likely be economically or legally mineable. Additional, “inferred mineral assets” have a higher quantity of uncertainty as to their existence and as as to whether they are often mined legally or economically. Below Canadian securities legal guidelines, estimates of “inferred mineral assets” might not type the idea of feasibility or pre-feasibility research, besides in uncommon circumstances. Whereas the above phrases beneath the U.S. Guidelines are “considerably comparable” to the requirements beneath NI 43-101 and CIM Requirements, there are variations within the definitions beneath the U.S. Guidelines and CIM Requirements. Accordingly, there is no such thing as a assurance any mineral reserves or mineral assets that Ero might report as “confirmed mineral reserves”, “possible mineral reserves”, “measured mineral assets”, “indicated mineral assets” and “inferred mineral assets” beneath NI 43-101 can be the identical had Ero ready the reserve or useful resource estimates beneath the requirements adopted beneath the U.S. Guidelines.

A photograph accompanying this announcement is accessible at https://www.globenewswire.com/NewsRoom/AttachmentNg/e58950c7-9d23-4393-8b31-68d25a1628f6