Orosur Mining Inc Announces Anzá Restarts With Strong Set of Drilling Results

• Assays from final three Pepas infill holes show strong results, including:

  • PEP072B - 47.60m @ 3.43g/t Au from surface

  • PEP073 - 104.45m @ 5.96g/t Au from surface

  • PEP074 - 71.35m @ 6.46g/t Au from surface

• Pepas drill database delivered to consultants, MRE modelling underway.

• Planning underway for commencement of feasibility process.

• Drilling restarts at Anzá after Christmas break.

• Area under exploration licences ("Titles") increased by 65% as two major mineral exploration applications converted to Titles - exploration plans to be developed.

LONDON, UK / ACCESS Newswire / January 8, 2026 / Orosur Mining Inc. ("Orosur" or the "Company") (TSXV:OMI)(AIM:OMI), is pleased to announce an update on the progress of exploration activities at the Company's exploration project at Anzá in Colombia ("Anzá).

Anzá - Colombia

The Anzá Project in Colombia comprises a number of granted exploration titles and applications totalling roughly 327km² within the Mid-Cauca gold belt, west of the city of Medellin.

These titles and applications are owned by two Colombian companies, Minera Anzá, and Minera Monte Aguila, both of which are wholly owned subsidiaries of the Company. The latter of these was acquired by Orosur in November 2024 from the Company's previous JV partners, Newmont Mining and Agnico Eagle Mines. Orosur thus owns 100% of the Anzá Project.

Since acquiring 100% control, the Company has focussed its attention on three prospects:

• Pepas - a shallow, high-grade body of gold mineralisation that the Company is endeavouring to move to an initial Mineral Resource Estimate in the near term.

• APTA - a high-grade body of gold mineralisation that has to date seen 38,000m of drilling, but is not yet sufficiently understood geologically to allow a MRE to be calculated. The Company plans to undertake additional drilling at APTA in 2026, with the objective of advancing it toward an MRE.

• El Cedro - a large gold porphyry system in the south of the Project area. The Company has completed a large soil sampling program and plans to undertake a maiden drill program here in early 2026.

Figure 1. Anzá Project

Pepas Drilling

As announced on 14^th July 2025, the Company had taken the formal decision to commence infill drilling at its Pepas gold prospect at Anzá, with the objective of moving Pepas to a NI43-101 compliant Mineral Resource Estimate ("MRE") as quickly as possible.

This infill drill program was completed late in December 2025, with results from the final three holes PEP072, PEP073 and PEP074 just received.

As expected, gold assay results from these three holes were exceptional, demonstrating the core of Pepas to contain very thick, high-grade zones of gold mineralisation.

Hole Number	From (m)	To (m)	Interval (m)	Au (g/t)
PEP072B	0	47.6	47.6	3.43
including	16.25	19.7	3.45	6.52
PEP073	0	104.45	104.45	5.96
including	25.45	59.6	34.15	10.3
PEP074	0	71.35	71.35	6.46
including	11.4	26.5	15.1	23.59

Table 1. Latest drill Intercepts, Pepas Prospect

Figure 2. Plan of holes

Figure 3. Section, PEP072

Figure 3. Section, PEP073, PEP074

With the receipt of these results, the gold assay database has been closed off and handed to our resource consultants so that work on the MRE modelling process can commence.

Feasibility

The Company has begun the process of assessing the economic exploitation options for Pepas in the context of the Colombian permitting regime. Discussions are currently underway with local technical consultants to map out the permitting framework, necessary environmental and social studies, and development of the required technical work plan (Programa de Trabajo y Obras - PTO), that could commence once an MRE is finalised.

Wider Exploration

Following the Christmas break and retirement of the old drill rig for much needed repairs, a new rig has arrived on site to commence a regional drill program north of Pepas. This program is reconnaissance in nature, designed to better understand the wider litho-structural environment that controls the Pepas mineralisation.

As has been previously announced, plans for drilling programs to the south at APTA and El Cedro will be progressed once airborne geophysical surveys have been undertaken over these prospects. Options for this work are being assessed.

Granting of mining exploration licences ("Titles")

The Company is constantly assessing its land package in Colombia in terms of geological potential, costs to hold, the ability of exploration work to be undertaken and any subsequent discovery exploited in light of local community sentiment.

To that end, several major adjustments were made at the end of December 2025.

Two of the larger, longer held applications, that made up the bulk of the original Anzá JV project, have now been granted, and converted to exploration licences (Figure 1). The Company thus now has three large contiguous granted Titles, totalling 173km2, all within the mining friendly Anzá municipality, an increase of some 65%.

Reconnaissance surface work has previously been undertaken on these new licences by the Company's previous JV partners. These data will now be re-assessed and exploration plans developed accordingly now that drilling is able to be undertaken.

In addition, several smaller applications have been dropped for various reasons, including geological prospectivity, or likely inability to able to be explored as they fall outside Anzá municipality in less receptive areas.

The Company thus currently now has 154km2 under application.

Orosur CEO Brad George commented:

"The Company starts 2026 in a very different position to a year ago. One deposit (hopefully) soon to enter feasibility, two rigs turning in two countries and an increasing list of high-quality targets lining up to be next. Exciting times".

For further information, visit www.orosur.ca, follow on X @orosurm or please contact:

Orosur Mining Inc
Louis Castro, Chairman,
Brad George, CEO
[e-mail]
Tel: [phone]

SP Angel Corporate Finance LLP - Nomad & Joint Broker
Jeff Keating / Jen Clarke / Devik Mehta
Tel: [phone]

Turner Pope Investments (TPI) Ltd - Joint Broker
Andy Thacker/Guy McDougall
Tel: [phone]

Flagstaff Communications and Investor Communications
Tim Thompson Alison Allfrey
Fergus Mellon
[e-mail]
Tel: [phone]

The information contained within this announcement is deemed by the Company to constitute inside information as stipulated under the Market Abuse Regulations (EU) No. 596/2014 ('MAR') which has been incorporated into UK law by the European Union (Withdrawal) Act 2018. Upon the publication of this announcement via Regulatory Information Service ('RIS'), this inside information is now considered to be in the public domain.

Neither TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this release.

Drill Hole Details - Pepas prospect 2022/2024 Programme*

Hole ID	Easting (m)	Northing (m)	Elevation asl (m)	Dip (°)	Azimuth (°)
PEP-001	403384	705000	1001	-50	150
PEP-002	403384	705000	1001	-60	290
PEP-003	403240	705142	1001	-49.60	95.2
PEP-004	403508	705671	838	-59.8	99.8
PEP-005	403373	704990	1008	-49.8	94.6
PEP-007	403374	704990	1008	-69.9	170
PEP-008	403232	704803	971	-50	60
PEP-009	403032	705057	1055	-50	80
PEP-010	403375	705106	982	-50.31	190.4
PEP-011	403573	704939	1001	-50.3	255
PEP-012	403415	704890	997	-56	352
PEP-013	403413	704887	997	-50	43
PEP-014	403400	704910	1007	-50	43
PEP-015	403375	704938	1017	-50	43
PEP-016	403326	704912	999	-50	43
PEP-017	403365	704848	976	-40	47
PEP-018	403345	704851	977	-45	43
PEP-019	403446	704890	991	-45	43
PEP-020	403446	704890	991	-75	43
PEP-021	403424	704935	1012	-62	223
PEP-022	403424	704935	1012	-42	223
PEP-023	403245	704927	969	-50	43
PEP-024	403245	704927	969	-78	43
PEP-025	403369	704888	1001	-45	43
PEP-026	403339	704955	1008	-63	50
PEP-027	403468	704909	1003	-46	228
PEP-028	403398	704957	1012	-58	223
PEP-029	403311	705018	1011	-50	50
PEP-030	403311	705018	1011	-50	000
PEP-031B*	403486	704901	998	-52	220
PEP-032	403431	704861	982	-60	15
PEP-033	403431	704861	982	-65	100
PEP-034	403431	704861	982	-45	315
PEP-035	403369	704882	996	-45	223
PEP-036	403311	705152	989	-45	30
PEP-037	403354	705227	958	-50	210
PEP-038	403332	705219	967	-45	128
PEP-039	403411	704798	957	-45	73
PEP-040	403369	704882	995	-80	212
PEP-041	403373	704936	1008	-50	3
PEP-042	403396	705038	716	-50	82
PEP-043	403298	704942	981	-50	43
PEP-044	403402	704948	1011	-62	33
PEP-045	403406	704949	1011	-60	223
PEP-046	403420	704933	1007	-53	43
PEP-047	403414	704927	1008	-74	223
PEP-048	403448	704922	1005	-54	043
PEP-049	403447	704920	1005	-55	223
PEP-050	403459	704905	1003	-45	43
PEP-051	403391	704928	1011	-61	43
PEP-052	403391	704928	1011	-87	43
PEP-053	403391	704929	1012	-60	223
PEP-054	403380	704954	1011	-52	43
PEP-055	403380	704954	1011	-86	223
PEP-056	403371	704970	1012	-61	43
PEP-057	403371	704970	1012	-71	223
PEP-058	403371	704970	1012	-85	223
PEP-059	403384	704976	1007	-59	43
PEP-060	403372	704908	1005	-55	43
PEP-061	403361	704988	1010	-80	223
PEP-062	403361	704988	1010	-61	43
PEP-063	403345	705005	1009	-50	80
PEP-064	403356	704923	1005	-51	43
PEP-065	403359	704949	1008	-59	43
PEP-065B*	403359	704949	1008	-50	43
PEP-066	403423	704938	1009	-64	223
PEP-067	403400	704870	990	-53	43
PEP-068	403342	704989	1010	-56	43
PEP-069	403342	704987	1010	-80	218
PEP-070	403260	705071	1013	-50	30
PEP-071	403333	705005	1009	-51	90
PEP-072B*	403435	704879	989	-70	43
PEP-073	403423	704917	1006	-50	307
PEP-074	403423	704917	1006	-60	127

* Redrill of holes abandoned due to technical problems.

Drill Hole Details, El Pantano Project 2025 onward

Hole ID	Easting (m)	Northing (m)	Elevation asl (m)	Dip (°)	Azimuth (°)
ELP-001	527906	4697061	285	-50	190
ELP-002	527970	4697238	266	-50	190
ELP-003	528007	4697338	266	-50	190
ELP-004	528044	4697438	266	-50	190
ELP-005	527831	4697342	266	-55	010
ELP-006	527831	4697342	266	-50	010
ELP-007	529162	4696630	320	-50	010
ELP-008	530497	4695922	285	-55	020

* Coordinates WGS84, UTM Zone 18

About Orosur Mining Inc.
Orosur Mining Inc. (TSXV:OMI)(AIM:OMI) is a minerals explorer and developer currently operating in Colombia and Argentina.

Qualified Persons Statement
The information in this news release was compiled, reviewed, verified and approved by Mr. Brad George, BSc Hons (Geology and Geophysics), MBA, Member of the Australian Institute of Geoscientists (MAIG), CEO of Orosur Mining Inc. and a qualified person as defined by National Instrument 43-101.

Orosur Mining Inc. staff follow standard operating and quality assurance procedures to ensure that sampling techniques and sample results meet international reporting standards.

Drill core is split in half over widths that vary between 0.3m and 2m, depending upon the geological domain. One half is kept on site in the Minera Anzá core storage facility in the case of the Anza Project, or on site in temporary racks in the case of the El Pantano Project, with the other sent for assay.

Industry standard QAQC protocols are put in place with approximately 10% of total submitted samples being blanks, repeats or Certified Reference Materials (CRMs).

Samples for holes PEP-001 to PEP-011 were sent to the Medellin preparation facility of ALS Colombia Ltd, and then to the ISO 9001 certified ALS Chemex laboratory in Lima, Peru.

Samples from PEP-012 onwards are sent to Medellin laboratory of Actlabs for preparation and fire assay, with some sample then sent to the Canadian Actlabs facility for multi element assay

Samples from the EL Pantano project are sent to the preparation facility and fire assay laboratory of Alex Stewart Laboratories in Perito Moreno to be assayed for gold. Pulps are then sent to the larger Alex Stewart facility in Mendoza for multi-element analysis.

30 gram nominal weight samples are then subject to fire assay and AAS analysis for gold with gravimetric re-finish for overlimit assays of >5 g/t. ICP-MS Ultra-Trace level multi-element four-acid digest analyses may also undertaken for such elements as silver, copper, lead and zinc, etc.

Gold intersections are reported using a lower cut-off of 0.3g/t Au over 3m.

Intersections are quoted as downhole thicknesses. True thicknesses are unknown.

Forward Looking Statements

All statements, other than statements of historical fact, contained in this news release constitute "forward looking statements" within the meaning of applicable securities laws, including but not limited to the "safe harbour" provisions of the United States Private Securities Litigation Reform Act of 1995 and are based on expectations estimates and projections as of the date of this news release.

Forward-looking statements include, without limitation, the continuing focus on the Pepas prospect, the exploration plans in Colombia and the funding of those plans, and other events or conditions that may occur in the future. There can be no assurance that such statements will prove to be accurate. Actual results and future events could differ materially from those anticipated in such forward-looking statements. Such statements are subject to significant risks and uncertainties including, but not limited to, those described in the Section "Risks Factors" of the Company's MD&A for the year ended May 31, 2025. The Company's continuance as a going concern is dependent upon its ability to obtain adequate financing. This material uncertainty may cast significant doubt upon the Company's ability to realize its assets and discharge its liabilities in the normal course of business and accordingly the appropriateness of the use of accounting principles applicable to a going concern. The Company disclaims any intention or obligation to update or revise any forward-looking statements whether as a result of new information, future events and such forward-looking statements, except to the extent required by applicable law.

This information is provided by RNS, the news service of the London Stock Exchange. RNS is approved by the Financial Conduct Authority to act as a Primary Information Provider in the United Kingdom. Terms and conditions relating to the use and distribution of this information may apply. For further information, please contact [e-mail] or visit www.rns.com.

SOURCE: Orosur Mining Inc

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https://www.accessnewswire.com/newsroom/en/metals-and-mining/orosur-mining-inc-announces-anz%c3%a1-restarts-with-strong-set-of-drilling-results-1125399