Orla Confirms Two-Kilometre Gold Development Extension at Musselwhite

Excessive grade drilling outcomes strengthen confidence in vital useful resource development and mine life extension

Orla Mining Ltd. (TSX: OLA; NYSE: ORLA) (“ORLA” or the “Firm”) is happy to offer an replace on continued exploration success on the Musselwhite Mine, with drilling confirming excessive grade gold mineralization extends two kilometers past present underground operations.

Because the October 6 replace, asserting preliminary discovery of the mine development extension, the Firm’s aggressive, multifaceted drilling marketing campaign has delivered constant high-grade outcomes throughout all precedence zones, strengthening confidence in vital useful resource development potential and prolonged mine life.

New Exploration Highlights: 

• Continued Mine Development Extensions Affirmation: Vital gold mineralization intersected two kilometres down plunge of present operations, returning 5.0 metres at 5.57 g/t Au incl. 1.0 m at 8.79 g/t Au (25-NSD03-002W).
• Extra underground useful resource development: A number of high-grade underground intersections from the Redwings, Lynx, West Limb and PQE Zones proceed to assist manufacturing and development, together with 9.0 metres at 22.1 g/t Au (25-LNX-009) and 15.0 metres at 10.1 g/t Au (25-LNX-041).
• Continued near-mine satellite tv for pc drilling success: Shallow high-grade mineralization confirmed at near-mine satellite tv for pc targets, together with 1.2 metres at 43.8 g/t Au incl. 0.4 m at 129 g/t Au (25-KAZ-007).

“Since our October 2025 replace, the Musselwhite exploration program has continued delivering a gradual stream of high-grade intercepts throughout all precedence zones. These outcomes strengthen confidence in useful resource development and the outlook for prolonged mine life. We’ll carry the momentum with all precedence exploration applications initiated in 2025 persevering with by 2026.”

–       Sylvain Guerard, Orla’s Senior Vice President, Exploration

Deep Directional Drilling Confirms Two-Kilometre Mine Development Extension, Potential Higher and Decrease Zones

The 2025–2026 deep directional floor drill program is focusing on the northwest down-plunge extension of the Mine Development, testing roughly one to 2 kilometres past present operations by a deliberate 30-hole program. Thus far, 11,744 metres have been accomplished, with assay outcomes obtained from eight holes. Deliberate drill metres have elevated from 11,000 metres to roughly 12,500 metres by year-end 2025. This information launch reviews outcomes from 4 further holes accomplished because the October 6, 2025, outcomes press launch.

Mom Gap #3, Daughter-Gap #1: Confirms Excessive Grade Two-Kilometres from Present Operations

Assays from Mom Gap #3 and its first daughter gap affirm the Mine Development continues two kilometres past present operations, with a 400 metre step out from the beforehand reported 4.1 metres at 15.1 g/t Au (October 6, 2025, launch).

• 5.0 metres at 5.57 g/t Au incl. 1.0 m at 8.79 g/t Au (25-NSD03-002W)

Mom Gap #2, Daughter Holes #1-2: Deep drilling suggests stacked mineralized zones

As beforehand reported in October, gap 25-NSD02-001 intersected high-grade gold, returning 4.1 metres at 15.1 g/t Au. Primarily based on drill orientation and geological interpretation, this preliminary intersection is now believed to signify an extension of the Lynx Zone, relatively than the PQ Zone. Each zones happen within the deeper portion of the mine, with the Lynx Zone representing an higher mineralized horizon and the PQ Zone occurring beneath.

Subsequent drilling since October included the completion of first and second daughter holes drilled deeper on the identical part. These holes intersected lower-grade gold mineralization, returning 0.18 to 0.47 g/t Au over 2.0 to three.5 metres, which is interpreted to signify a lower-grade interval located between the higher Lynx Zone and the decrease PQ Zone.

Additional down-dip drilling deliberate by 2026 will goal wider, higher-grade mineralization typical of the PQ Zone at depth. This evolving interpretation of stacked higher and decrease mineralized zones stays below analysis, but when confirmed, may signify materials new info and significant upside potential for the broader extension space.

Mom Gap #1, Daughter Gap #2: 1.0 metre at 8.06 g/t Au incl. 0.4 m at 13.4 g/t Au (25-NSD01-003W)

Underground Drilling Outcomes Reinforce Continuity and Establish Extra Extensions

The underground program has remained centered on the Redwings, Lynx, and PQE zones, with choose drilling on the West Limb. The high-grade outcomes assist ongoing efforts to exchange and broaden assets and reserves. In 2025, 30,250 metres of drilling and 107 holes have been accomplished, with assays obtained for 63 of the holes. Notable intercepts embody:

Lynx Zone:

• 9.0 metres at 22.1 g/t Au (25-LNX-009)
• 15.0 metres at 10.1 g/t Au incl. 3.3 m at 37 g/t Au (25-LNX-041)
• 2.8 metres at 13.2 g/t Au (25-LNX-048)

Redwings Zone:

• 6.2 metres at 15.8 g/t Au (25-RDW-049)

PQE Zone:

• 1.0 metres at 75.5 g/t Au (25-PQE-031)

West Limb Zone:

• 1.0 metres at 283 g/t Au (25-WEL-007)
• 0.9 metres at 94.6 g/t Au (25-WEL-003)

Close to-Mine Floor Drilling Identifies Satellite tv for pc Alternatives Proximal to Mill

The 6,500-metre near-mine floor program, accomplished in October, returned encouraging shallow intercepts throughout 5 targets, together with a slender high-grade intersection. Comply with up drilling deliberate in early 2026 will advance the Camp Bay mineralized zone and a four-kilometre strike development alongside the Musselwhite SE extension also called “Karl Zeemal”. Mixed historic and new outcomes assist the potential for added mill feed sources. Notable new outcomes from these targets embody:

Karl Zeemal:

• 1.2 metres at 43.8 g/t Au incl. 0.4 m at 129.0 g/t Au from 28.8 m downhole (25-KAZ-007)
• 3.1 metres at 2.56 g/t Au incl. 1.0 m at 6.34 g/t Au from 25 m downhole (25-KAZ-001)

Camp Bay:

• 1.2 metres at 4.78 g/t Au incl. 0.5 m at 7.64 g/t Au from 18.5 m downhole (25-CMP-005)
• 3.8 metres at 0.64 g/t Au from 12 m downhole (25-CMP-004)

2026 Planning to Goal Continued Mine Development Extension and Useful resource Growth

Orla plans to advance the second 12 months of its aggressive two-year exploration technique in 2026, constructing on applications initiated in 2025. Efforts will goal the Mine Development Extension, underground useful resource and reserve development, and selective near-mine satellite tv for pc alternatives, supporting potential mine life extensions and future operational expansions. Additional particulars on the 2026 exploration applications can be offered in early 2026.

Desk 1: Deep Directional Intersection Detailed Highlights

Desk 2: Underground Drill Intersection Detailed Highlights

Desk 3: Close to Mine Drill Intersection Detailed Highlights

Extra Technical Info

All mineralized interval lengths reported are down-hole intervals, with true width estimates starting from 30-100% for the reported interval. True widths are usually not estimated in circumstances the place there may be inadequate geological management on gold mineralization. See Tables 1 to three within the Appendix of this information launch for estimated true widths of particular person composites. A minimal sampling size of 0.30 m is used for each underground and floor drilling. The reported composites weren’t topic to “capping” of excessive grades. Orla believes that making use of a prime lower would have a negligible impact on general grades.

Certified Individuals Assertion         

The scientific and technical info on this information launch has been reviewed and accredited by Mr. Sylvain Guerard, P Geo., SVP Exploration of the Firm, who’s the Certified Individual as outlined below the definitions of Nationwide Instrument 43-101 (“NI 43-101”).

To confirm the data associated to the 2025 drilling program at Musslewhite Mine, Mr. Guerard has visited the property in October 2025, mentioned logging, sampling, and pattern transport processes with accountable website workers, mentioned and reviewed assay and QA/QC outcomes with accountable personnel, and reviewed supporting documentation, together with drill gap location and orientation and vital assay interval calculations.

High quality Assurance / High quality Management – 2025 Drill Program and Historic Drilling

Gold outcomes at Musselwhite had been obtained at ALS Canada Inc. (“ALS”) or SGS Canada Inc. (“SGS”) utilizing fireplace assay fusion and an atomic absorption spectroscopy end (ALS: Au-AA23, SGS: GE_FAA30V5). If samples returned gold values higher than 10 ppm, samples are re-run with gold by fireplace assay and gravimetric end (ALS: Au-GRA21, SGS: GO_FAG30V). Gold outcomes had been additionally obtained at ALS utilizing PhotonAssay^TM on two aliquots of 500g of crushed pattern (ALS: Au-PA01).

Drill program design, High quality Assurance/High quality Management (QAQC) and interpretation of outcomes had been carried out by certified individuals using a QAQC program in keeping with NI 43-101 and trade finest practices. For Hearth Assay analyses, requirements had been inserted at a frequency of 4 in each 100 samples, and blanks had been inserted at a frequency of 4 in each 100 samples.

ALS and SGS are each unbiased of Orla. ALS is an ISO-17025 accredited laboratory for photon assay strategies. There are not any recognized drilling, sampling, restoration, or different components that might materially have an effect on the accuracy or reliability of the drilling knowledge at Musselwhite.  

For extra info on Musslewhite, see the Musselwhite Report (as outlined beneath) and the Firm’s press releases dated October 6, 2025 (Orla Mining Discovers Potential Two-Kilometre Extension at Musselwhite) and April 1, 2025 (Orla Mining Launches $25M Exploration Drilling Program to Broaden Reserves and Assets and Lengthen Musselwhite Mine Development).

Historic drill outcomes at Musselwhite had been accomplished by Goldcorp. Inc. (“Goldcorp”) and/or Newmont, the prior house owners of the challenge. The Firm’s unbiased certified particular person, DRA Americas, Inc. was of the opinion that the drilling and sampling procedures for Musselwhite drill samples by Goldcorp and Newmont had been cheap and ample for the needs of the Musselwhite Report, and that the Goldcorp and Newmont QA/QC program met or exceeded trade requirements. See the Firm’s NI 43-101 technical report for the challenge entitled “Technical Report – Musselwhite Mine Mission, Ontario, Canada” with an efficient date of November 18, 2024 (the “Musselwhite Report”) for added info.

About Orla Mining Ltd.

Orla’s company technique is to amass, develop, and function mineral properties the place the Firm’s experience can considerably improve stakeholder worth. The Firm has three materials initiatives, consisting of two working mines and one growth challenge, all 100% owned by the Firm: (1) Camino Rojo, in Zacatecas State, Mexico, an working gold and silver open-pit and heap leach mine. The property covers over 139,000 hectares which incorporates a big oxide and sulphide mineral useful resource, (2) Musselwhite Mine, in Northwestern Ontario, Canada, an underground gold mine that has been in operation for over 25 years and produced over 6 million ounces of gold, with an extended historical past of useful resource development and conversion, and (3) South Railroad, in Nevada, United States, a feasibility-stage, open pit, heap leach gold challenge situated on the Carlin development in Nevada. The technical reviews for the Firm’s materials initiatives can be found on Orla’s web site at www.orlamining.com, and on SEDAR+ and EDGAR below the Firm’s profile at www.sedarplus.ca and www.sec.gov, respectively.

For additional info, please contact:

Jason Simpson
President & Chief Govt Officer

Andrew Bradbury
Vice President, Investor Relations & Company Growth

www.orlamining.com
information@orlamining.com

Ahead-looking Statements

This information launch incorporates sure “forward-looking info” and “forward-looking statements” throughout the that means of Canadian securities laws and throughout the that means of Part 27A of the USA Securities Act of 1933, as amended, Part 21E of the USA Trade Act of 1934, as amended, the USA Non-public Securities Litigation Reform Act of 1995, or in releases made by the USA Securities and Trade Fee, all as could also be amended on occasion, together with, with out limitation, statements concerning: the Firm’s exploration program at Musselwhite and the timing and objectives thereof, together with the potential for reserve and useful resource development, mine life extension, operational enlargement, upside potential, the potential for satellite tv for pc deposits and longer-term development and operational flexibility; and the Firm’s objectives and aims. Ahead-looking statements are statements that aren’t historic info which deal with occasions, outcomes, outcomes or developments that the Firm expects to happen. Ahead-looking statements are primarily based on the beliefs, estimates and opinions of the Firm’s administration on the date the statements are made they usually contain plenty of dangers and uncertainties. Sure materials assumptions concerning such forward-looking statements had been made, together with with out limitation, assumptions concerning: the longer term worth of gold and silver; anticipated prices and the Firm’s capability to fund its applications; the Firm’s capability to hold on exploration, growth, and mining actions; the Firm’s capability to efficiently combine the Musselwhite Mine; tonnage of ore to be mined and processed; ore grades and recoveries; decommissioning and reclamation estimates; forex alternate charges remaining as estimated; costs for vitality inputs, labour, supplies, provides and companies remaining as estimated; the Firm’s capability to safe and to satisfy obligations below property agreements, together with the layback settlement with Fresnillo plc; that every one situations of the Firm’s credit score facility can be met; the timing and outcomes of drilling applications; mineral reserve and mineral useful resource estimates and the assumptions on which they’re primarily based; the invention of mineral assets and mineral reserves on the Firm’s mineral properties; that political and authorized developments can be in keeping with present expectations; the well timed receipt of required approvals and permits, together with these approvals and permits required for profitable challenge allowing, building, and operation of initiatives; the timing of money flows; the prices of working and exploration expenditures; the Firm’s capability to function in a secure, environment friendly, and efficient method; the Firm’s capability to acquire financing as and when required and on cheap phrases; that the Firm’s actions can be in accordance with the Firm’s public statements and said objectives; and that there can be no materials hostile change or disruptions affecting the Firm or its properties. Consequently, there could be no assurances that such statements will show to be correct and precise outcomes and future occasions may differ materially from these anticipated in such statements. Ahead-looking statements contain vital recognized and unknown dangers and uncertainties, which may trigger precise outcomes to vary materially from these anticipated. These dangers embody, however are usually not restricted to: uncertainty and variations within the estimation of mineral assets and mineral reserves; dangers associated to the Firm’s indebtedness and gold prepayment; dangers associated to exploration, growth, and operation actions; international nation and political dangers, together with dangers regarding international operations; tailings dangers; reclamation prices; delays in acquiring or failure to acquire governmental permits, or non-compliance with permits; environmental and different regulatory necessities; lack of, delays in, or failure to get entry from floor rights house owners; uncertainties associated to title to mineral properties; water rights; dangers associated to pure disasters, terrorist acts, well being crises, and different disruptions and dislocations; financing dangers and entry to further capital; dangers associated to steerage estimates and uncertainties inherent within the preparation of feasibility research; uncertainty in estimates of manufacturing, capital, and working prices and potential manufacturing and value overruns; the fluctuating worth of gold and silver; dangers associated to the Cerro Quema Mission; unknown labilities in reference to acquisitions; world monetary situations; uninsured dangers; local weather change dangers; competitors from different firms and people; conflicts of curiosity; dangers associated to compliance with anti-corruption legal guidelines; volatility available in the market worth of the Firm’s securities; assessments by taxation authorities in a number of jurisdictions; international forex fluctuations; the Firm’s restricted working historical past; litigation dangers; the Firm’s capability to determine, full, and efficiently combine acquisitions; intervention by non-governmental organizations; outdoors contractor dangers; dangers associated to historic knowledge; dangers associated to the Firm’s international subsidiaries; dangers associated to the Firm’s accounting insurance policies and inner controls; the Firm’s capability to fulfill the necessities of Sarbanes–Oxley Act of 2002; enforcement of civil liabilities; the Firm’s standing as a passive international funding firm (PFIC) for U.S. federal revenue tax functions; info and cyber safety; the Firm’s vital shareholders; gold trade focus; shareholder activism; different dangers related to executing the Firm’s aims and methods; in addition to these threat components mentioned within the Firm’s most just lately filed administration’s dialogue and evaluation, in addition to its annual info type dated March 18, 2025, which can be found on www.sedarplus.ca and www.sec.gov. Besides as required by the securities disclosure legal guidelines and rules relevant to the Firm, the Firm undertakes no obligation to replace these forward-looking statements if administration’s beliefs, estimates or opinions, or different components, ought to change.

Appendix: Drill Outcomes  

Desk 1: MSW Deep Directional Drill Outcomes

Desk 2: MSW Underground Drill Outcomes

Desk 3: MSW Close to-Mine Drill Outcomes

Desk 4: MSW Underground, Deep Directional and Close to-Mine Drill Gap Collars

SOURCE Orla Mining Ltd.

View authentic content material to obtain multimedia: http://www.newswire.ca/en/releases/archive/December2025/18/c8632.html