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Omai Gold Drills 20.33 g/t Au over 5.3m and 2.72 g/t Au over 16.3m from Exploration Targets and Drilling Continues at Wenot with 5 Rigs

Drill Results

Omai Gold Drills 20.33 g/t Au over 5.3m and

2.72 g/t Au over 16.3m from Exploration

Targets and Drilling Continues at Wenot with 5

Rigs

Toronto, Ontario--(Newsfile Corp. - November 3, 2025) -

Omai Gold Mines Corp.

(TSXV: OMG)

(OTCQB: OMGGF) ("

Omai Gold

" or the "

Company

") is pleased to announce assay results from the

next phase of drilling at its 100% owned Omai Gold Project in Guyana, South America. The current

positive drilling results are from two near-surface exploration targets that were identified from trenching,

geophysics and historical data. Assays are reported for 11 drill holes totalling 2,615m with 6 holes on the

BBH target and 5 holes from the Camp Zone (Table 1).

A total of 64 drill holes have been completed to

date this year on the Omai property, totalling 30,297m.

The deep hole 25ODD-122, testing the blue-sky potential at depth below the Wenot deposit, ended at a

downhole depth 2,014m. It was successful in intersecting approximately 280m of the Wenot shear

corridor at a depth of approximately 1,120m from surface or 600 m below the known Wenot gold

deposit. Assays are pending.

Five rigs are currently drilling on the Wenot deposit with the goal of completing an additional 8,000m

before year end.

Highlights from the recent exploration holes include:

BBH Target

Hole 25ODD-131

20.33 g/t Au over 5.30m

Including 35.61 g/t Au over 3m

Camp Zone Target

Hole 25ODD-135

2.72 g/t Au over 16.30m

Including 9.05 g/t Au over 4m

Hole 25ODD-136

2.05 g/t Au over 7.50m

Including 11.32 g/t Au over 1m

Hole 25ODD-138

0.85 g/t Au over 12.70m

Including 1.32 g/t Au over 6m

Elaine Ellingham, President & CEO commented,

"We are pleased to provide these exciting results

from two of our exploration targets, both nearby the Wenot and Gilt Creek gold deposits.

Although we

have kept our focus on expanding the Wenot open pit deposit and driving forward to an updated

Preliminary Economic Study with a much expanded Omai mine plan, we still believe that identifying

and working to define additional satellite deposits will create further value to the project. A few of our

exploration targets have evidence of higher grade mineralization and present possibilities for satellite

pits that could positively impact early cash flow and overall NPV. With today's results, we will further

model these targets to guide additional drilling in these clearly prospective areas."

"

We are also pleased to announce that the deep hole 25ODD-122, drilled to test the blue sky potential

of the Wenot deposit at depth successfully reached 2,014m (Photo 1). The hole flattened significantly,

not unexpectedly but this allowed us to cross over 280m of the Wenot shear corridor at a vertical depth

of about 1,120m, which is at least 600m below the deepest known extent of the Wenot deposit.

Since

we have identified the Wenot deposit along a 2.5 km strike length, this potential depth extension

bodes well for the long-term potential of the project. Proving the shear extends this far to depth is a

great win. We await assay results. Although the Omai Mineral Resource Estimate is quite sizeable, the

geological extension to depth of the shear corridor that hosts the gold mineralization in the upper part

of Wenot provides the possibility for an even longer mine life. Large-scale mine developments

support long-term employment and sustainable communities. Omai is located 10km from the only

road from Georgetown, the capital city of Guyana, to Brazil. Paving is well underway on this road and

there are longer-term plans to establish this as an access to a major deep-water port planned on the

coast of Guyana, east of Georgetown. This infrastructure would further benefit the Omai project."

BBH Target Drill Results

(Map 1)

A series of trenches and historical and recent drill holes identified significant near-surface high-grade

gold mineralization. A series of flat-lying, saprolite-hosted ladder veins have also been observed in fresh

rock within a nearby old adit (likely Anaconda, circa 1948). These ladder veins appear to occur between

two northeast-trending structures. Drilling in 2021 intersected 1.7 g/t Au over 7.5m, and 3.15 g/t Au over

3.0m and six of eleven 2022 trench samples assayed over 6 g/t Au, including three that assayed over 10

g/t Au

(News Release Dated February 24, 2022).

Seven drill holes were recently completed along the

interpreted 600m trend of this zone.

Results for five of the seven holes have been received and results

for the additional two holes are pending.

Most successful, hole 25ODD-131 tested the continuity of the shallow gold mineralization within a series

of flat-lying quartz veins and veinlets identified in trenches located 100m to the west and also 300m to

the northeast. Hole 131, drilled vertically, intersected a near-surface, high-grade zone of 20.33 g/t Au

over 5.30m that included 35.61 g/t Au over 3.0m, at a depth of -50m. Another zone, although lower

grade, returned 0.31 g/t Au over 6m at a depth of -86m.

Hole 25ODD-133, an inclined hole collared 100m to the northeast of hole 131, intersected several

intervals of anomalous gold with best results of 1.24 g/t Au over 1.5m and 0.76 g/t Au over 1.5m.

Hole 25ODD-129, located 400m northeast of hole 131, tested the broader trend of the targeted zone

with an inclined hole. It intersected a sequence of chlorite-altered basalt cut by a couple of diorite dikes.

Assays include 0.41 g/t Au over 10.50m, within the basalt.

These inclined holes are proving less effective

for exploration of the known flat-lying gold zones in this area.

Hole 25ODD-137, another inclined hole, is located 550m ENE of hole 131. It intersected shallow

mineralization, including 0.53 g/t Au over 4.5m, 0.38 g/t Au over 4.5m, and 0.78 g/t Au over 3.0m. All of

these intersections are at a vertical depth of less than -52m. Nearby, an historic drill hole intersected

0.74 g/t Au over 94m near surface.

Given the proximity to surface and being hosted within

unconsolidated material, it is possible that with further drilling these could contribute to a future Mineral

Resource Estimate.

Hole 25ODD-134 was a vertical hole testing over 600m east of hole 131, along the projected strike. It

intersected only 0.75 g/t Au over 1.5m which is surprising since a nearby historical drill hole intersected

multiple gold-bearing zones, including 0.72g/t Au over 15m, 0.82 g/t Au over 9m, 1.24 g/t over 3m, and

0.72 g/t Au over 9m. The orientation of these ladder veins between two structures can prove challenging

to model but with these additional holes, the orientations are becoming better understood.

This exploration further demonstrates significant near-surface gold mineralization in this area and

additional drilling is warranted. These holes proved useful in better understanding the orientation and

distribution of gold zones. A small near-surface high-grade resource in this area could be beneficial as a

smaller, higher grade, satellite pit to a future mine plan for the larger Omai project.

Results from an

additional two holes in this area are pending.

Camp Zone Target

The Camp Zone Target is located approximately 300-500m west of the Wenot deposit. The Wenot

shear corridor extends through this area, with the expected Central Quartz Feldspar Porphyry ('CQFP')

occurring at the volcano-sedimentary contact, as usual. In this area, the shear corridor and CQFP

appear slightly offset or splayed off the otherwise straight-line projection of the main Wenot shear.

Most significant new results from the Camp Zone include 2.72 g/t Au over 16.3m in hole 25ODD-135 at

a depth of -115m, 6.81 g/t Au over 1m and 2.05 g/t Au over 7.5m in hole 25ODD-136 at a depth of -

180m, and 0.85 g/t Au over 12.70m in hole 25ODD-138, also above -200m depth.

In all of these cases,

the mineralization occurred within the felsic dikes, believed to be correlated to the preferentially

mineralized "Dike Corridor" seen at the main Wenot deposit, and to previously drilled gold-bearing felsic

dikes along strike in the Camp Zone.

Hole 25ODD-130, located in the center of Camp Zone, returned several intercepts of anomalous gold,

0.78g/t Au over 5.1m and 1.38 g/t Au over 4m, at a vertical depth of less than -82m.

Hole 25ODD-132, collared approximately 100m north, behind hole 25ODD-130, returned narrow

intercepts of anomalous gold, including 1.98 g/t Au over 2.1m, 0.69 g/t Au over 2.2m, and 0.77 g/t Au

over 1.5m. These intersections are further north than the intercepts in hole 130 and are at depths of less

than -50m.

Drilling in the Camp Zone area has now identified mineralization occurring along a 450m strike. The best

historical intersections include 1.56 g/t Au over 10.5m, 1.57 g/t Au over 7.5m, 3.0 g/t Au over 10.5m, and

5.75 g/t Au over 9.9m. More recently, the Company intersected 2.53 g/t Au over 9.9m in hole 22ODD-

047, and early this year hole 25ODD-098 intersected 0.59 g/t Au over 10.5m and 0.42 g/t Au over 18.4m

within the same horizon

(News Release Dated March 27, 2025).

Most of these intersections are at a

depth of less than -150m, so attractive as a potential satellite pit. However, it is possible that with further

drilling the Camp Zone may prove to be a continuation of the Wenot West gold mineralization, with a

minor offset or deflection. Seven close-spaced holes were drilled in this area in September and assays

are pending for two holes. Additional drilling will be planned once all results are received and reviewed.

Deep Hole 25ODD-122

Hole 122 ended at a downhole depth of 2,014m. It was successful in identifying the depth extension of

the Wenot shear corridor at a depth of 1120m or approximately 600m below the deepest known parts of

the Wenot gold deposit.

This hole also supports the model that the Wenot shear and the central contact

dip almost vertically, with an estimated 85° dip to the north, based on the visually distinctive CQFP that

persistently occurs at the contact between the volcanic rocks on the north and the sedimentary rocks on

the south. Hole 122 did not continue beyond 2,014m due to physical drilling limitations, and although it

tested a wide portion of the Wenot shear, it did not reach the southern limit.

Assays are pending.

Figure 1. Map Showing BBH Drill Hole Results and Compilation of Trenching and Sampling

Results

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

https://images.newsfilecorp.com/files/8712/272925_f9c00b1744c5fa66_001full.jpg

Table 1. Recent Wenot Drill Results*

DDH

From

To

Interval

Grade g/t Au)

25ODD-129 (BBH)

211.0

221.5

10.5

0.41

25ODD-130

(CZ)

85.5

90.6

5.1

0.78

103.0

107.0

4.0

1.38

172.5

174.0

1.5

0.42

25ODD-131 (BBH)

45.7

51.0

5.3

20.33

Including

46.5

49.5

3.0

35.61

80.0

86.0

6.0

0.31

167.5

169.0

1.5

0.31

25ODD-132 (CZ)

4.5

6.6

2.1

1.98

33.0

35.2

2.2

0.69

54.0

55.5

1.5

0.77

25ODD-133 (BBH)

48.0

49.5

1.5

0.32

66.2

67.7

1.5

0.40

157.5

159.0

1.5

1.24

178.5

180.0

1.5

0.76

25ODD-134 (BBH)

113.5

115.0

1.5

0.75

25ODD-135 (CZ)

75.0

75.6

0.6

0.52

79.5

81.0

1.5

0.51

138.9

155.2

16.3

2.72

Including

141.5

145.5

4.0

9.05

25ODD-136

(CZ)

225.0

226.0

1.0

6.81

241.5

249.0

7.5

2.05

Including

244.0

245.0

1.0

11.32

25ODD-137 (BBH)

16.5

21.0

4.5

0.53

41.5

46.0

4.5

0.38

52.0

55.0

3.0

0.78

25ODD-138

(CZ)

178.0

179.5

1.5

0.43

262.0

274.7

12.7

0.85

Including

263.0

269.0

6.0

1.32

347.5

349.0

1.5

0.46

*True widths vary as mineralization at Wenot is generally hosted within stockwork vein systems with alteration halos, with an estimated true width

range of 70-90%. Cut-off grade of 0.30 g/t Au with maximum 3.0m internal dilution is applied. Grades are uncapped unless otherwise noted.

Figure 2. Map Showing Camp Zone Drill Hole Results

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

https://images.newsfilecorp.com/files/8712/272925_f9c00b1744c5fa66_002full.jpg

Figure 3. Cross-Section DDH 25ODD-135 and DDH 25ODD-136 (Camp Zone)

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

https://images.newsfilecorp.com/files/8712/272925_f9c00b1744c5fa66_003full.jpg

Table 2. Drill Hole Coordinates

Hole ID

Azimuth

Inclination

Easting

Northing

Length

Status

(degrees)

(degrees)

(m)

25ODD-122

142

-60

304648

602870

2013.6

Pending

25ODD-129

147

-52

304160

602829

256.5

Reporting

25ODD-130

178

-51

303677

602020

250.6

Reporting

25ODD-131

0

-90

303923

602486

208.7

Reporting

25ODD-132

178

-55

303681

602114

403.6

Reporting

25ODD-133

148

-65

303981

602546

220.5

Reporting

25ODD-134

20

-88

304442

602812

152.4

Reporting

25ODD-135

177

-48

303728

602034

259.2

Reporting

25ODD-136

178

-48

303731

602106

334.7

Reporting

25ODD-137

178

-60

304406

602731

170.1

Reporting

25ODD-138

180

-48

303780

602095

358.7

Reporting

Quality Control

Omai maintains an internal QA/QC program to ensure sampling and analysis of all exploration work is

conducted in accordance with best practices. Certified reference materials, blanks and duplicates are

entered at regular intervals. Samples are sealed in plastic bags.

Drill core samples (halved-core) were shipped to Act Labs and some batches to MSALABS, both

certified laboratories in Georgetown Guyana, respecting the best chain of custody practices. At the

laboratory, samples are dried, crushed up to 80% passing 2 mm, riffle split (250 g), and pulverized to

95% passing 105 μm, including cleaner sand. Fifty grams of pulverized material is then fire assayed by

atomic absorption spectrophotometry (AA). Initial assays with results above 3.0 ppm gold are re-

assayed using a gravimetric finish. For samples with visible gold, two separate 250g or 500g pulverized

samples are prepared, with 50 grams of each fire assayed by atomic absorption spectrophotometry,

with assays above 3.0 ppm gold being re-assayed using a gravimetric finish. Certified reference

materials and blanks meet with QA/QC specifications.

Qualified Person

Elaine Ellingham, P.Geo., is a Qualified Person (QP) under National Instrument 43-101 "Standards of

Disclosure for Mineral Projects" and has reviewed the technical information contained in this news

release. Ms. Ellingham is a director and officer of the Company and is not considered to be independent

for the purposes of National Instrument 43-101.

ABOUT OMAI GOLD

Omai Gold Mines Corp. is a Canadian gold exploration and development company focused on rapidly

expanding the two orogenic gold deposits at its 100%-owned Omai Gold Project in mining-friendly

Guyana, South America. The Company has established the Omai Gold Project as one of the fastest

growing and well-endowed gold camps in the prolific Guiana Shield. In August 2025, the Company

announced a 96% increase to the Wenot Gold Deposit NI 43-101 Mineral Resource Estimate

1

(MRE) to

970,000 ounces of gold (Indicated) averaging 1.46 g/t Au, contained in 20.7 Mt and 3,717,000 ounces of

gold (Inferred MRE) averaging 1.82 g/t Au, contained in 63.4 Mt. This brings the global MRE at Omai,

including the Wenot and adjacent Gilt Creek deposits, to 2,121,000 ounces of gold (Indicated MRE)

averaging 2.07 g/t Au in 31.9 Mt and 4,382,000 ounces of gold (Inferred MRE) averaging 1.95 g/t Au in

69.9 Mt. A baseline PEA announced in April 2024, contemplated an open pit-only development scenario

and included less than 30% of the new Mineral Resource Estimate for Omai. Five drills are currently

active on the property: at Wenot the focus is to optimize the upcoming PEA, to further test the limits of

the deposit, including both east and west, and to commence upgrading the large Inferred MRE to

Indicated. Additional drilling will continue to explore certain known gold occurrences for possible near-

surface higher-grade satellite deposits. An updated PEA is planned for H1 2026 to include the

expanded Wenot open pit deposit and the adjacent Gilt Creek underground deposit. The Omai Gold

Mine produced over 3.7 million ounces of gold from 1993 to 2005

2

, ceasing operations when gold was

below US$400 per ounce. The Omai site significantly benefits from existing infrastructure and is

connected to the two largest cities in Guyana, Georgetown and Linden.

1

NI 43-101 Technical Report dated October 9, 2025 titled "UPDATED MINERAL RESOURCE ESTIMATE AND TECHNICAL REPORT ON THE

OMAI GOLD PROPERTY, POTARO MINING DISTRICT NO.2, GUYANA" was prepared by P&E Mining Consultants Inc. and is available on

www.sedarplus.ca

and on the Company's website.

2

Past production at the Omai Mine (1993-2005) is summarized in several Cambior Inc. documents available on

www.sedarplus.ca

, including

March 31, 2006 AIF and news release August 3, 2006.

For further information, please see our website

www.omaigoldmines.com

or contact:

Elaine Ellingham, P.Geo.

President & CEO

[email protected]

+1.416.473.5351

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