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GoldQuest Provides Update on 2025 Drilling and Metallurgical Program at Romero Gold- Copper Project, Dominican Republic

Metallurgy & Processing

GoldQuest Provides Update on 2025 Drilling

and Metallurgical Program at Romero Gold-

Copper Project, Dominican Republic

Vancouver, British Columbia--(Newsfile Corp. - December 3, 2025) -

GoldQuest Mining Corp. (TSXV:

GQC) (OTCQX: GDQMF)

("GoldQuest" or the "Company") is pleased to provide an update on its

ongoing 2025 drilling and metallurgical testwork program at the 100%-owned Romero Gold-Copper

Project in the Dominican Republic.

Completed 5 metallurgical drillholes

totalling 1,906 metres; approximately 1,600 m of

representative core selected from all holes for advanced locked-cycle and variability testwork at

ALS Kamloops, with first results expected in March 2026 and final report anticipated by late

April/early May 2026.

Geotechnical and hydrogeological drilling advancing on schedule

: 5 dedicated geotech

holes (approximately 1,600 m) plus 12 hydrogeological holes (2 completed, 2 in progress), all

expected to be finished by February 2026 to support Feasibility Study engineering design.

One additional rig mobilizing in December and more in January to the high-priority

Cachimbo

discovery

target to initiate resource delineation drilling and test additional early-stage targets

along the Romero-Cachimbo mineralized corridor.

Once the geotechnical and hydrogeological drilling is completed, GoldQuest plans to transition

these drills to Romero resource expansion drilling and to test proximal targets including the

Romero Gap target.

Integration of new structural, geophysical and geological datasets into machine learning (AI)

targeting software now underway following completion of district-scale structural review - expected

to help refine and add additional quality exploration targets for 2026.

Since the program commenced in September 2025, the Company has successfully completed

five

metallurgical drill holes totalling 1,906 metres

(Figure 1). These holes were specifically designed to

provide fresh core from the already recognized Mineral Reserves area for advanced metallurgical testing

and obtain detailed geotechnical information and samples in support of the ongoing Feasibility Study.

All the first five holes have visually confirmed high-grade mineralization at the core of the Romero

deposit, showing multiple mineralization events, including massive sulphides, silicification, brecciation

and other favorable alteration styles. Figure 2 shows different examples at different depths and locations

of the orebody. In addition, assay results for these holes will be obtained as part of the metallurgical test

work program currently underway.

Figure 1: Drill Progress at Romero

To view an enhanced version of this graphic, please visit:

https://images.newsfilecorp.com/files/1663/276661_goldquest.jpg

Figure 2: Selected core from 2025 drilling. a) Favorable multi-event hydrothermal alteration (Hole LTP-

171 - 289 m). b) Multiple overprinting hydrothermal pulses related to Cu-Au mineralization (Hole LTP-

172 - 252 m). c) Massive Cu-Au sulfide matrix breccia within tuff sequence (LTP-173 - 159.2 m). d)

Hydrothermal quartz injection associated with favorable mineralization (LTP-174 - 192.3 m)

To view an enhanced version of this graphic, please visit:

https://images.newsfilecorp.com/files/1663/276661_goldquest3.jpg

Approximately

1,600 metres of representative core

have been selected from all five holes. Sample

distribution ensures full representativity of the mineralized body across the planned mining sequence and

different lithological and alteration domains. The sampling protocol was based on the definition of geo-

metallurgical units (GMUs) and the construction of variability and life-of-mine composites. Locked-cycle

tests and variability testing on these composites is expected to provide detailed processing parameters

throughout the life of the mine and enable accurate sizing of plant equipment.

The selected laboratory for this advanced testwork program is

ALS Kamloops

(Canada), one of the

world's most respected metallurgical facilities.

First results from the locked-cycle and variability testwork are expected in

March 2026

, with the final

metallurgical report anticipated by the end of

April or early May 2026

.

In parallel, three additional drill rigs continue with a

geotechnical and hydrogeological

drilling

program at the planned plant, waste dump, tailings facility areas, and critical infrastructure (Figure 2).

This campaign consists of

five dedicated geotechnical holes

(approximately 1,600 metres in total)

and

twelve hydrogeological holes

(2 completed and 2 ongoing) and is on schedule for completion by

February 2026

. Data from these holes will support detailed engineering design for the Feasibility Study.

One additional rig is being mobilized to Cachimbo to start the exploration program during December,

with the objective of delineating a Mineral Resource in this target, and drill test other early-stage targets

along the mineralized belt defined between Romero and Cachimbo. One additional rig is expected to be

deployed in this area by January 2026.

With the completion of an integral review of district and local structural geology, which improved the

understanding of gold-copper mineralization controls, 3D structural modelling, reprocessing and

reinterpreting historical geophysical datasets, we are now focused on integrating all the datasets

generated into a machine learning (AI) software to assist with the targeting.

Luis Santana, CEO of GoldQuest Mining Corp., commented:

"We are very pleased with the rapid

and safe progress of our 2025 program. Completing the metallurgical drilling campaign on schedule and

securing representative samples from across the deposit marks an important de-risking milestone for

the Romero Project. We now look forward to commencing greenfield exploration drilling at the Cachimbo

target, with the first rig scheduled to start in early December and a second rig expected to be mobilized

by late January 2026."

Figure 3: Drill Location and Program Detail.

To view an enhanced version of this graphic, please visit:

https://images.newsfilecorp.com/files/1663/276661_goldquest2.jpg

Qualified Person

The scientific and technical information in this news release has been reviewed and approved by

Leandro Sastre, P. Geo., VP of Exploration of GoldQuest and a Qualified Person for the technical

information in this news release under NI 43-101-

Standards of Disclosure for Mineral Projects

.

About GoldQuest

GoldQuest Mining Corp. (TSXV: GQC) (OTCQX: GDQMF) is a Canadian exploration and development

company with strong participation from Dominican investors, focused on advancing its gold and copper

assets in the Dominican Republic. With a Board and Management Team that have previously developed

a mine still operating in the country.

The Company is well funded to carry out its exploration programs and to advance the development of its

Romero gold/copper discovery, also located in the Tireo Formation of the Dominican Republic.

Additional information can be viewed at the Company's website

www.goldquestcorp.com

.

On Behalf of the Board of Directors of GoldQuest Mining Corp.,

"Luis Santana"

Director & CEO

Neither the TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the

policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this news

release.

Forward-looking statements:

Statements contained in this news release that are not historical facts are forward-looking information

that involves known and unknown risks and uncertainties. Forward-looking statements in this news

release include, but are not limited to, statements with respect to the Company's drill programs, the

results of such drill programs and the interpretation of the results of the drill programs, further drilling, the

timing of drilling and assay results, the mobilization of drill rigs, metallurgical testwork and the timing of

results thereof, the Feasibility Study and engineering studies in support thereof, mineral resources at

Romero and Romero South, the merits of the Company's mineral properties, future drill programs and

studies, the Company's plans and exploration programs for its mineral properties, including the timing of

such plans and programs, and the Company's belief that Dominican Republic authorities will support the

development of the Romero gold-copper project. In certain cases, forward-looking statements can be

identified by the use of words such as "plans", "expects" or "does not expect", "is expected", "potential",

"likelihood", "appears", "budget", "scheduled", "estimates", "forecasts", "at least", "intends",

"anticipates" or "does not anticipate", "objective", or "believes", or variations of such words and phrases

or state that certain actions, events or results "may", "could", "would", "should", "might" or "will be taken",

"occur" or "be achieved".

Forward-looking statements 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 future results, performance or achievements expressed or implied by the forward-looking

statements. Such risks and other factors include, among others, risks related to uncertainties inherent in

drill results and the estimation of mineral resources; commodity prices; changes in general economic

conditions; market sentiment; currency exchange rates; the Company's ability to continue as a going

concern; the Company's ability to raise funds through equity financings; risks inherent in mineral

exploration; risks related to operations in foreign countries; future prices of metals; failure of equipment

or processes to operate as anticipated; accidents, labor disputes and other risks of the mining industry;

delays in obtaining governmental approvals; government regulation of mining operations; environmental

risks; title disputes or claims; limitations on insurance coverage and the timing and possible outcome of

litigation. Although the Company has attempted to identify important factors that could affect the

Company and may 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 as

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. Accordingly, do not place undue reliance on forward-looking statements. All statements

are made as of the date of this news release and the Company is under no obligation to update or alter

any forward-looking statements except as required under applicable securities laws. Forward-looking

statements are based on assumptions that the Company believes to be reasonable, including

expectations regarding mineral exploration and development costs; expected trends in mineral prices

and currency exchange rates; the accuracy of the Company's current mineral resource estimates; that

the Company's activities will be in accordance with the Company's public statements and stated goals;

that there will be no material adverse change affecting the Company or its properties; that all required

approvals will be obtained and that there will be no significant disruptions affecting the Company or its

properties.

For further information, please contact:

Luis Santana, Chief Executive Officer

1 (809) 224-0629

[email protected]

To view the source version of this press release, please visit

https://www.newsfilecorp.com/release/276661