DPM Metals Expands Brevene Porphyry South Discovery With New High-Grade Intercepts
| HOLEID | EAST | NORTH | RL | AZ | DIP | FROM | TO | LENGTH | AuEq | Au | Cu | Mo |
| (m) | (m) | (m) | (g/t) | (g/t) | (%) | g/t | ||||||
| EX_BRES_555_02A* | 6639 | 30079 | 558 | 170 | -60 | 1357 | 2073.6 | 716.6 | 3.30 | 1.63 | 1.58 | 17.09 |
| including | 1643 | 1929 | 286 | 3.54 | 1.80 | 1.64 | 12.41 | |||||
| including | 1935 | 2073.6 | 138.6 | 5.71 | 2.83 | 2.72 | 9.99 | |||||
| EX_BRES_555_02B | 6639 | 30079 | 558 | hole ongoing | ||||||||
| EX_BRESPO_03* | 7192 | 28742 | 682 | 310 | -72 | 1172 | 2226 | 1054 | 2.49 | 1.20 | 1.20 | 43.46 |
| including | 1487 | 1952 | 465 | 3.02 | 1.49 | 1.44 | 20.70 | |||||
| EX_BRESPO_04A | 8037 | 29951 | 704 | 250 | -58 | no significant intervals | ||||||
| EX_BRESPO_03A | 7192 | 28743 | 682 | 310 | -72 | 1175 | 1882 | 707 | 1.08 | 0.56 | 0.48 | 40.18 |
| including | 1191 | 1202 | 11 | 1.51 | 0.99 | 0.49 | 14.49 | |||||
| including | 1252 | 1270 | 18 | 2.04 | 1.22 | 0.78 | 9.05 | |||||
| including | 1284 | 1324 | 40 | 1.66 | 0.81 | 0.81 | 10.25 | |||||
| EX_BRESPO_03B | 7192 | 28743 | 682 | hole ongoing | ||||||||
| EX_BRESPO_05 | 6566 | 28819 | 689 | 54 | -80 | 1176 | 1504 | 328 | 3.28 | 1.97 | 1.24 | 4.82 |
| hole ongoing | ||||||||||||
| EX_BRESPO_06 | 6558 | 28823 | 689 | 350 | -77 | 1143 | 1683 | 540 | 1.31 | 0.69 | 0.57 | 32.93 |
| including | 1313 | 1325 | 12 | 2.14 | 1.38 | 0.70 | 25.33 | |||||
| including | 1355 | 1413 | 58 | 2.11 | 1.13 | 0.92 | 18.75 | |||||
| including | 1445 | 1481 | 36 | 2.14 | 1.49 | 0.61 | 17.53 | |||||
| including | 1657 | 1683 | 26 | 2.35 | 1.10 | 1.17 | 23.26 | |||||
| EX_BRESPO_06A | 6558 | 28823 | 689 | 20 | -73 | hole ongoing | ||||||
| EX_BRESPO_07 | 6356 | 28433 | 679 | 14 | -78 | 1455 | 1597 | 142 | 1.42 | 0.72 | 0.65 | 29.60 |
| including | 1553 | 1597 | 44 | 2.49 | 1.32 | 1.10 | 11.35 | |||||
| hole ongoing | ||||||||||||
| EX_BRESPO_08 | 7184 | 28741 | 682 | 300 | -75 | hole ongoing | ||||||
| EX_BRESPO_09 | 6313 | 27982 | 657 | 30 | -61 | hole ongoing | ||||||
| EX_BRESPO_10 | 7432 | 30285 | 730 | 233 | -75 | hole ongoing | ||||||
| EX_BRESPO_250_01 | 5756 | 29833 | 250 | 124 | -60 | 1310 | 1408 | 98 | 0.78 | 0.37 | 0.38 | 38.49 |
| hole ongoing |
1) Coordinates are reported in the Chelopech mine-grid.
2) AuEq is calculated using the following formula: Au g/t + 1.056 x Cu% + Mo g/t * 0.00043, based on a gold price of US$2,500 per ounce, a copper price of US$3.85 per pound and a molybdenum price of US$15 per pound. The calculation assumes metallurgical recoveries of 90% for all metals and is based on testing of other porphyry mineralization styles at the Chelopech Camp.
3) Significant intercepts are reported using a minimum downhole width of 20 metres, a maximum internal dilution of 10 metres at a 0.7 g/t AuEq cut-off, whilst including intervals are reported using a minimum downhole width of 10 metres, a maximum internal dilution of 5 metres at a 1.5 g/t AuEq cut-off. No upper cuts were applied.
4) Daughter holes identified with“A” (e.g., EX_BRESPO_03A) are navigational holes with collar coordinates as of the parent hole.
5) Holes marked with (*) were partially reported in the Company`s news release from June 3, 2026, available on SEDAR+ at and the Company's website.
6) For holes identified as“in progress,” reported intervals reflect assay results received as of September 20, 2026. Drilling and/or assay results for the remaining portions of these holes are pending.
7) Reported intercepts are downhole lengths. True widths have not been determined.
Preliminary metallurgical testwork results
Metallurgical testing of three Brevene Porphyry South composite samples is ongoing on three representative composite samples at the SLR Consulting laboratory in the United Kingdom. Table 2 presents the head-assay values for the three selected composite samples, that represent the different Cu-Au-Mo mineralization styles at the Brevene Porphyry South target.
Table 2. Geologic description and head assays
| Met composite sample ID | Geological Description | Cu (%) | Au (g/t) | Mo (g/t) |
| MET_BSP26_01 | Potassic alteration with chlorite-anhydrite overprint with hematite-magnetite, Pyrite>chalcopyrite | 0.77 | 0.92 | 19.70 |
| MET_BSP26_02 | Potassic alteration with strong silica flooding, dominant vein-hosted chalcopyrite-pyrite | 2.08 | 1.67 | 22.85 |
| MET_BSP26_03 | Potassic alteration with phyllic and strong anhydrite overprint; chalcopyrite-pyrite-molybdenite disseminations and veins | 1.34 | 0.76 | 195.50 |
Rougher grind-size optimization tests were carried out at P80 grind sizes of 75 μm, 106 μm and 125 μm. The rougher grade-recovery results indicated that the optimum grind size for copper, gold and molybdenum was P80 75 μm. Open-cycle cleaner tests were carried out on each of the metallurgical composites at the optimum primary grind size of P80 75 μm, using a promoter and 3-stage cleaning (FCT1). The conditions for FCT2 was completed at an elevated cleaner pH of 10.0–10.5, while FCT3 included regrinding of the combined rougher concentrate to P80 25 μm. A summary of the selected rougher stage and third-stage cleaner concentrate testwork results are presented in table 3 below.
Table 3. Preliminary results of selected rougher and open cycle cleaner tests
| Met composite sample ID | Test Stage | Mass Pull % | Product / Concentrate Assay | Metal Distribution, % | ||||
| Cu % | Mo % | Au g/t | Cu | Mo | Au | |||
| MET_BSP26_01 | Rougher - FT1 | 17.4 | 4.1 | - | 5.5 | 97.0 | - | 89.1 |
| Cleaner - FCT1 | 7.5 | 8.7 | - | 11.9 | 88.1 | - | 85.0 | |
| Cleaner - FCT2 | 7.7 | 8.3 | - | Pending | 90.0 | - | Pending | |
| Cleaner - FCT3 | 6.5 | 10.0 | - | Pending | 90.2 | - | Pending | |
| MET_BSP26_02 | Rougher - FT1 | 16.4 | 12.3 | - | 10.1 | 97.9 | - | 89.0 |
| Cleaner - FCT1 | 8.0 | 21.5 | - | 20.6 | 85.7 | - | 83.9 | |
| Cleaner - FCT2 | 8.7 | 20.2 | - | Pending | 87.0 | - | Pending | |
| MET_BSP26_03 | Rougher - FT1 | 12.1 | 10.3 | 0.14 | 5.6 | 98.2 | 88.7 | 86.0 |
| Cleaner - FCT1 | 4.6 | 25.0 | 0.4 | 15.3 | 90.5 | 84.1 | 80.6 |
1)“-” indicates not assayed / not applicable.
2)“Pending” indicates assay results are pending.
Based on this early stage of testwork, the results indicate that Brevene Porphyry South mineralization is amenable to conventional rougher-cleaner flotation at relatively standard grind sizes. Preliminary cleaner testwork has produced Cu-Au concentrate grades ranging from 10.0% to 25.0% Cu and approximately 12 g/t to 20 g/t Au.
Detailed multi-element analyses of the cleaner-concentrate products are pending. However, exploration assay data indicate that deleterious elements, such as arsenic, occur at trace levels in all three composites and are not currently expected to reach penalty thresholds in the final concentrates.
The remainder of the current testwork program will focus on reagent optimization and improving the flotation selectivity of chalcopyrite over pyrite, particularly for MET_BSP26_01. The preliminary molybdenum response from MET_BSP26_03 is encouraging, and future testwork will evaluate the potential to produce a separate molybdenum concentrate.
Next Steps
The Company remains highly encouraged by these results, which further support the presence of a significant porphyry system southeast of the Chelopech mine, with drilling to date indicating elevated gold and copper grades relative to those typically associated with porphyry-style mineralization.
The latest drilling extends mineralization onto the Chelopech mine concession, further enhancing its potential to support future mine-life extension given the target's proximity to existing infrastructure. Based on current data and geological interpretation, the mineralized system remains open to the north, south and west and is open at depth, where it is interpreted to plunge slightly to the southwest.
Drilling activities within the Brevene exploration licence are planned to continue until the end of September, at which point the exploration licence period concludes. The Company will shift drilling to the existing Chelopech mine concession, where the latest results have confirmed the Brevene Porphyry South target extends north onto the concession. Up to eight high-capacity drill rigs will be dedicated to the Brevene Porphyry South target, with approximately 15,000 additional metres of drilling is planned through the end of 2026. This expanded program is focused on delineating the northern and western extensions of the porphyry system, as well as testing the depth potential, where mineralization remains open. Further delineation drilling will continue in 2027, to support the Company's internal Mineral Resource estimates and technical evaluations.
In addition, scout drilling is also continuing on the Chelopech mine concession, with two underground drill rigs targeting additional telescoped high-sulphidation mineralization similar to the Wedge Zone, which remains a high-priority for the Company given the Wedge Zone's life of mine and near-term production potential within the Chelopech mining camp. Refer to the Company's news release dated May 20, 2026, for additional information regarding the Wedge Zone Deep discovery.
In parallel with the drilling program, the Company continues to advance activities in support of converting the Brevene exploration licence to a mining concession. In late August, the final geology report, which includes technical and economic assessment, was submitted to the Ministry of Energy, with regulatory review ongoing.
The key milestones in this regulatory process include recognition of a Commercial Discovery; submission of a mining concession application; environmental and other permitting requirements; and ultimately, granting of a concession contract, all of which is subject to regulatory review and approval. As the Company advances through this regulatory process, DPM's near-term exploration updates regarding the Chelopech camp will be focused on results from within the mine concession area, with further Brevene exploration results to resume once the regulatory milestones are achieved.
Figure 1. Broad plan view of the Chelopech area showing deep drill intercepts below -200 mRL, including all reported holes at the Brevene Porphyry South in bold, the interpreted footprint of mineralization as well as the projected silica alteration envelope associated with the high-sulphidation mineralization type. The projected extent of porphyry related phyllic and potassic alteration zones is estimated from drill core logging and geochemical indicators, including elevated Mo, paragonitic muscovite and high Zr/Ti ratios in the phyllic zone, and elevated K/Al and/or magnetite in the potassic zone.
Figure 2. Detailed plan view of the Brevene Porphyry South prospect showing all drillhole intercepts and the interpreted mineralization footprint below -200 mRL, together with the projected silica alteration envelope associated with the high-sulphidation mineralization type.
Figure 3. Northwest-southeast long section (6000 E, 500 metres thick) showing the location of the Brevene Porphyry South intercepts as well as the Wedge Zone Deep (“WZD”) prospect, the existing high-grade domains and mine infrastructure.
Figure 4. Northeast-southwest cross section (6770, 500 metres thick) showing the location of the Brevene Porphyry South intercepts as well as a projection of the existing high-grade domains and mine infrastructure, located approximately one kilometre northwest from the target.
Figure 5. Images showing (a) the core photos from hole EX_BRES_555_02A between 1,978.20 m to 1,991.10 m downhole depth, (b) close-up views of porphyry style of mineralization within the interval. (Cpy – chalcopyrite, Py – pyrite, Chl – chlorite; Mt - magnetite)
Figure 6. Northeast-southwest cross section displaying existing constrained 3D magnetic inversion model on the top of the geology interpretation at the Brevene Porphyry South target.
Sampling, Analysis and QAQC of Exploration Drill Core Samples
Most surface exploration diamond drill holes are collared with PQ size, continued with HQ, and are sometimes finished with NQ and BQ diameters. Underground exploration diamond drill holes are collared with HQ size, continued and finished with NQ, in isolated cases due to technical reasons with BQ. Triple tube core barrels and short runs are used whenever possible to improve recovery. Directional drilling techniques were utilized to facilitate target testing where appropriate. Within competent rock formations, a navigational curve (“NAVI curve”) was established and multiple daughter holes were branched from the same parent trajectory prior to completing the mother hole to its final depth. This method enabled efficient testing of multiple target positions from a single drill platform while improving drilling efficiency.
All drill core is cut lengthwise into two halves using a diamond saw; one half is sampled for assaying, and the other half is retained in core trays. The common length for sample intervals is two meters within mineralized zones, except drillholes EX_BRESPO_03 and EX_BRES_555_02A, where PQ, HQ and NQ diameter are sampled at one meter length. Weights of drill core samples range from three to eight kilograms, depending on the size of core, rock type, and recovery. A numbered tag is placed into each sample bag, and the samples are grouped into batches for laboratory submissions.
Drill core samples are shipped to the Company's own exploration laboratory in Bor, Serbia, which is managed by SGS Minerals (“SGS”). SGS is independent of the Company. Quality control samples, comprising certified reference materials, blanks, and field duplicates, are inserted into each batch of samples and locations for crushed duplicates and pulp replicates are specified. All drill core and quality control samples are tabulated on sample submission forms that specify sample preparation procedures and codes for analytical methods. For internal quality control, the laboratory includes its own quality control samples comprising certified reference materials, blanks and pulp duplicates. All quality assurance and quality control (“QAQC”) monitoring data are reviewed and signed off by an independent QAQC geologist. Chain of custody records are maintained from sample shipments to the laboratory until analyses are completed and remaining sample materials are returned to the Company. The chain of custody is transferred from the Company to SGS at the laboratory door.
At the SGS Bor laboratory, the submitted drill core samples are dried at 105°C for a minimum of 12 hours and then jaw crushed to about 80% passing 4 millimetres. Sample preparation duplicates are created by riffle splitting crushed samples on a 1 in 20 basis. Larger samples are riffle-split prior to pulverizing, whereas smaller samples are pulverized entirely. Pulverizing specifications are 90% passing 75 microns. Gold analyses are done using a conventional 50-gram fire assay and atomic absorption spectrometry (“AAS”) finish. Multi-element analyses for 49 elements, including Ag, Cu, Mo, As, Bi, Pb, Sb, and Zn, are done using a four-acid digestion and an ICP-MS finish. Samples returning over 10 ppm for Ag and 1% for Cu, Pb and Zn are re-analyzed using high grade methods with AAS. Sulphur is analyzed using an Eltra Analyzer equipped with an induction furnace.
Technical Information
Ross Overall, Director, Corporate Technical Services of the Company, who is a Qualified Person as defined under NI 43-101, and Stefan Metodiev, General Manager, Exploration Department have reviewed and approved the scientific and technical content of this news release. Mr. Overall has verified the accuracy of the information presented in this disclosure. This included verification to ensure all results reported in the disclosure have passed QAQC protocols, drill core inspection and review of assay data with geology, alteration and mineralization logging data. No limitations were imposed on Mr. Overall's verification process.
About DPM Metals Inc.
DPM Metals Inc. is a Canadian-based international gold mining company with operations and projects located in Bulgaria, Bosnia and Herzegovina, Serbia and Ecuador. Our strategic objective is to become a mid-tier precious metals company, which is based on sustainable, responsible and efficient gold production from our portfolio, the development of quality assets, and maintaining a strong financial position to support growth in mineral reserves and production through disciplined strategic transactions. This strategy creates a platform for robust growth to deliver above-average returns for our shareholders. DPM trades on the Toronto Stock Exchange (symbol: DPM) and the Australian Securities Exchange as a Foreign Exempt Listing (symbol: DPM).
For further information please contact:
Jennifer Cameron
Director, Investor Relations
Tel: (416) 219-6177
...
Cautionary Note Regarding Forward Looking Statements
This news release contains“forward looking statements” or“forward looking information” (collectively,“Forward Looking Statements”) that involve a number of risks and uncertainties. Forward Looking Statements are statements that are not historical facts and are generally, but not always, identified by the use of forward looking terminology such as“plans”,“expects”,“is expected”,“budget”,“scheduled”,“estimates”,“forecasts”,“outlook”,“intends”,“anticipates”,“believes”, or variations of such words and phrases or that state 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 or similar expressions. The Forward Looking Statements in this news release relate to, among other things, the Company's strategic objectives and associated returns to shareholders, including DPM's strategy to become a mid-tier precious metals Company; anticipated future exploration drilling activities at Chelopech and the Brevene exploration licence area and the results thereof; anticipated permitting activities, including steps to be taken to convert the Brevene exploration licence into a mining concession, key milestones in the regulatory approval process, and the receipt of all applicable approvals in respect thereof. Forward Looking Statements are based on certain key assumptions and the opinions and estimates of management and the QPs, as of the date such statements are made, and they involve known and unknown risks, uncertainties and other factors which may cause the actual results, performance or achievements of the Company to be materially different from any other future results, performance or achievements expressed or implied by the Forward Looking Statements. In addition to factors already discussed in this news release, such factors include, among others, fluctuations in metal prices and foreign exchange rates; risks arising from the current economic environment and the impact on operating costs and other financial metrics, including risks of recession; the speculative nature of mineral exploration, development and production, including changes in mineral production performance, exploitation and exploration results; changes in tax, tariff, and royalty regimes in the jurisdictions in which the Company operates, sells its concentrates. or which are otherwise applicable to the Company's business, operations, or financial condition; possible inaccurate estimates relating to future production, operating costs and other costs for operations; possible variations in grade and recovery rates; inherent uncertainties in respect of conclusions of economic evaluations, economic studies and mine plans; risks related to the possibility that future exploration results will not be consistent with the Company's expectations, that quantities or grades of reserves will be diminished, and that resources may not be converted to reserves; risks related to the financial results of operations, changes in interest rates, and the Company's ability to finance its operations; the impact of global liquidity and credit availability on the timing of cash flows and the values of assets and liabilities based on projected future cash flows; uncertainties inherent with conducting business in foreign jurisdictions where corruption, civil unrest, political instability and uncertainties with the rule of law may impact the Company's activities; the effects of international economic and trade sanctions; accidents, labour disputes and other risks inherent to the mining industry; failure to achieve certain cost savings; risks related to the Company's ability to manage environmental and social matters; risks related to climate change, including extreme weather events, resource shortages, emerging policies and increased regulations relating to related to greenhouse gas emission levels, energy efficiency and reporting of risks; the commencement, continuation or escalation of geopolitical crises and armed conflicts, including Iran and the broader Middle East region, and their direct and indirect effects on the operations of DPM; opposition by social and non-governmental organizations to mining projects; uncertainties with respect to realizing the anticipated benefits from the development of the Company's exploration and development projects; cyber-attacks and other cybersecurity risks; competition in the mining industry; claims or litigation; limitations on insurance coverage; changes in laws and regulations applicable to the Company and its business operations, and judicial interpretations thereof; the Company's ability to successfully obtain all necessary permits and other approvals required to conduct its operations; employee relations, including unionized and non-union employees, and the Company's ability to retain key personnel and attract other highly skilled employees; unanticipated title disputes; volatility in the price of the common shares of the Company; potential dilution to the common shares of the Company; damage to the Company's reputation due to the actual or perceived occurrence of any number of events, including negative publicity with respect to the Company's handling of environmental matters or dealings with community groups, whether true or not; risks related to holding assets in foreign jurisdictions; as well as those risk factors discussed or referred to in any other documents (including without limitation the Company's most recent Annual Information Form) filed from time to time with the securities regulatory authorities in all provinces and territories of Canada and available on SEDAR+ at . The reader has been cautioned that the foregoing list is not exhaustive of all factors which may have been used. Although the Company has attempted to identify important factors that could cause actual actions, events or results to differ materially from those described in Forward Looking Statements, there may be other factors that cause actions, events or results not to be anticipated, estimated or intended. There can be no assurance that Forward Looking Statements will prove to be accurate, as actual results and future events could differ materially from those anticipated in such statements. The Company's Forward-Looking Statements reflect current expectations regarding future events and speak only as of the date hereof. Unless required by securities laws, the Company undertakes no obligation to update Forward Looking Statements if circumstances or management's estimates or opinions should change. Accordingly, readers are cautioned not to place undue reliance on Forward Looking Statements.
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