Friday, September 18, 2026
MiningNewsTerminal
Friday, September 18, 2026 Admin

OMG.V ·

Omai Gold Intersects 7.74 g/t Au over 13.5m and 6.30 g/t Au over 9.8m at Wenot and Commences Drilling Exploration Target

Drill Results Exploration Programs

Omai Gold Intersects 7.74 g/t Au over 13.5m

and 6.30 g/t Au over 9.8m at Wenot and

Commences Drilling Exploration Target

Toronto, Ontario--(Newsfile Corp. - March 26, 2026) -

Omai Gold Mines Corp.

(TSXV: OMG) (OTCQB:

OMGGF) ("

Omai Gold

" or the "

Company

") is pleased to announce assay results from eight additional

drill holes from the recent drill program at its 100% owned Omai Gold Project in Guyana, South America.

Five of the eight holes were collared in West Wenot, two in Central Wenot and one at the east end of the

Wenot deposit.

All holes intersected multiple zones of gold mineralization. The objective of these holes

was to fill gaps within the broader Wenot deposit, to convert some mineralized areas to the higher

"indicated" confidence level and to provide further testing of the limits of the Wenot gold system.

The

holes at West Wenot showed continued significant gold mineralization within the southern sediments.

Five diamond drill rigs are now drilling on the Wenot deposit, all working on a series of holes at the

northeast portion of Wenot. These are focused on the prolific Dike Corridor at depths between -150 to -

400m (the DC holes), in areas not previously tested. As these holes are collared further to the north, they

will also explore potential northern splays. Early next week, one drill rig will be deployed to test an

intriguing geophysical anomaly known as "the Handle" that corresponds to a magnetic high trending

northeast off of the Wenot deposit. An additional drill rig will also commence an additional two holes

stepping out on the East Wenot target area.

Highlights* from the recent drilling include:

(refer to Table 1 for full assays and downhole depths):

Hole 25ODD-158

7.74 g/t Au over 13.5m

Including 28.03 g/t Au over 3.1m

1.45 g/t Au over 44.4m

Including 6.0 g/t Au over 3.6m

Hole 25ODD-162

6.30 g/t Au over 9.8m

Including 37.31 g/t Au over 1.1m

4.15 g/t Au over 6.7m

Hole 26ODD-166

10.02 g/t Au over 5.4m

2.55 g/t Au over 10.5m

1.48 g/t Au over 14.4m

Hole 25ODD-161

5.06 g/t Au over 9.4m

Including 26.96 g/t Au over 1.2m

Hole 26ODD-163

2.61 g/t Au over 15.4m

Hole 26ODD-164

2.93 g/t Au over 10.0m

2.78 g/t Au over 11.5m

Including 7.41 g/t Au over 3.0m

2.46 g/t Au over 11.0m

Elaine Ellingham, President and CEO commented:

"As these drill results continue to add to the

confidence in Omai as a Tier 1 gold asset, we are advancing many aspects of work towards the next

stages for the project. The Company is expecting the completion of its updated Mineral Resource

Estimate (MRE) within the next couple of weeks and the Preliminary Economic Assessment (PEA) is

expected a couple months following completion of the MRE. We have already set our sights on the

work that will advance us towards a Pre-Feasibility or Feasibility Study. Metallurgical work, tailings

studies and the important permitting initiatives are front and centre.

At the same time, we will continue

our very aggressive drill program with a focus on upgrading the large Wenot resource, extending the

limits and testing certain priority exploration targets."

Current Drill Results

Central Wenot

Hole 25ODD-158

was drilled from the north side of the Wenot Deposit to evaluate down-dip extensions

of mineralization across the wide Wenot shear corridor. The hole confirmed the depth continuity of the

mineralization observed earlier in holes 153 and 153W (especially within felsic dikes). Hole 158

intersected multiple visible gold occurrences associated with quartz-ankerite and quartz veining, shear

zones and altered dikes within the northern volcanic sequence, including 7.74 g/t Au over 13.5m

including 28.03 g/t Au over 3.1m. Further downhole within the Dike Corridor, 1.45 g/t Au over 44.4m

including 3.6 g/t Au over 6.0m was intersected in quartz veining within altered felsic dikes and the

enclosing volcanics. The CQFP zone assayed 1.18 g/t Au over 10.6m. Only minor gold was encountered

within the southern sediments in this area, the best being 1.79 g/t Au over 2.3m.

Hole 26ODD-164

was collared 120m in front of hole 158 on the same section line and also drilled to the

south. Hole 164 provided good evidence of the upward continuity of zones intercepted by previous holes

25ODD-153 and 25ODD-158.

In this hole, the Dike Corridor has 10 mineralized zones, the most notable

of which are 2.93 g/t Au over 10.0m with VG, 2.12 g/t Au over 9.0m with VG and 2.78 g/t Au over 11.5m

(which included 7.4 g/t Au over 3m).

The Dike Corridor is very robust in this area and with the increased

drilling density, the extent of this gold mineralization is becoming more apparent. The CQFP in hole 164

has 2 modest zones of 1.8 g/t Au over 1m and 2.7 g/t Au over 1.2m.

A couple of gold zones within the

sediments have VG and the best intercepts are 2.4 g/t Au over 10m (including 4.43 g/t Au over 4m) and

2.46 g/t Au over 11m (including 16.5 g/t Au over 1.2m).

The last intercept to the south, near the end of

hole is 1.6 g/t Au over 5.3m within the southern porphyry (SPOR) zone. This SPOR is typically a narrow

rock unit that persists along the full extent of the Wenot shear typically occurring about 125m south of the

central contact that itself hosts the typically wide and well mineralized quartz-feldspar porphyry (CQFP).

East Wenot

Hole 25ODD-160

was drilled northward at the east end of the Wenot deposit. The dip of the contact

between the volcanics and sediments is consistently steep to the north or sub-vertical along the full

Wenot deposit. However, at this eastern end, there is evidence that the dip has rotated to the south. Hole

160 illustrates this. This hole lies within a gap between holes 24ODD-82 (3.19 g/t Au over 22.8m and

3.65 g/t Au over 4.5m) and 22ODD-46 (1.85 g/t Au over 12.7m). In hole 160, a series of six gray to

reddish gray felsic dikes occur within 50m of the central contact and CQFP. In this area, the Dike

Corridor appears to converge with the central zone and it extends 50m from the CQFP to the north with

up to 1-2% disseminated pyrite and quartz veining with some VG.

Mineralized intervals within this 53m

wide Dike Corridor include 2.64 g/t Au over 2.7m, 0.59 g/t over 4.2m, 1.01 g/t over 7.0m and 7.17 g/t Au

over 1.5m.

West Wenot

Holes 25ODD-161 and -162

were drilled from the south side of the Wenot deposit.

Hole 161

was

drilled to explore the shallower extension of gold mineralization near the central contact above hole

25ODD-126 which returned 2.08 g/t Au over 18m, including 9.68 g/t Au over 1.5m in the CQFP. Hole

161 encountered the CQFP at the contact with 5.06 g/t Au over 9.4m (including 26.96 g/t Au over 1.2m)

approximately 70m updip from the zones in hole 126 that assayed 2.08 g/t Au over 18.0m. 150m updip

from the CQFP zone in hole 161, hole 20 intersected 1.28 g/t Au over 25.7m, this continuity of gold

mineralization quite typical within the CQFP zone. Further downhole in 161, several narrow mineralized

intervals occur within the volcanics with up to 0.5% disseminated pyrite, the best assaying 8.47 g/t Au

over 1.5m.

Hole 25ODD-162

, collared 200m east of Hole 161, was also drilled from the south side of the Wenot

Deposit. It intersected several discrete mineralized zones in the sediments with the best being 7.1 g/t Au

over 1.2m associated with a diorite dike. The CQFP mineralization assayed 6.3 g/t Au over 9.8m

(including 37.31 g/t Au over 1.1m) with several spots of VG. A number of gold zones within the Dike

Corridor include 4.15 g/t Au over 6.7m and 4.56 g/t Au over 3m with VG and 2.11 g/t Au over 2.2m.

Hole 26ODD-165

was drilled at the far west end of Wenot to explore the potential to extend the deposit

further to the west.

Shallow in the northern volcanics, 0.86 g/t over 10.2m was intersected before the

CQFP which assayed 0.61 g/t Au over 15.5m.

The southern sediments host six minor gold zones, the

best being 1.46 g/t Au over 3.0m. The zones clearly continue and deeper drilling may identify more

robust mineralization, as the Wenot shear continues towards the Camp Zone.

Holes 26ODD-163, 26ODD-166

were drilled on the same section line, with hole 166 being 70m in front

of (south) hole 163.

Both were collared from the north side of Wenot.

These holes tested across all of the

Wenot shear corridor. Typical of the west end of Wenot, the major gold zones have migrated to the

southern side of the contact, to be dominantly within the southern sediments. Both holes encountered

significant visible gold, typical of this area of the deposit.

Hole 166 first encountered gold mineralization

at a vertical depth of 150m with a zone running 10.02 g/t Au over 5.4m on the north side of the CQFP.

Hole 163 intersected an impressive 2.61 g/t over 15.4m at a vertical depth of 260m that may represent

the same zone as in hole 166.

Significant intercepts of gold mineralization were encountered, as expected, within the southern

sediments in both holes: Hole 163's sediment-hosted gold zones include 2.84 g/t Au over 6.4m, 1.97 g/t

Au over 6.8m and 9.07 g/t Au over 1.0m. In hole 166 updip, the sediment zones include a number of

zones along a 100m core interval including: 2.55 g/t Au over 10.5m, 1.48 g/t Au over 14.4m, 1.76 g/t Au

over 6.0m, 1.37 g/t Au over 11.1m and 1.64 g/t Au over 4.2m.

In all, hole 166 intersected over 69m of

gold mineralization within a 175m downhole interval of sedimentary rocks, or roughly 40% of this

sediment interval.

Figure 1.

Plan Map of Wenot Showing Drill Hole Locations

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

https://images.newsfilecorp.com/files/8712/290030_9acfe316f4dd4a7d_001full.jpg

Geophysics Target

One drill rig is being deployed to test a prospective geophysics anomaly known as the "Handle", that

trends NE from the Wenot deposit.

The Wenot deposit corresponds to a high magnetic anomaly related

to magnetite content and the Handle is similarly a magnetic high. Historical blast hole data suggests

northeast-trending structures play a role in the mineralization in some areas along the Wenot deposit.

This geophysics anomaly conforms to this trend and presents an interesting drill target.

Figure 2.

Airborne Magnetic Images showing the Omai "Augen", the Wenot Magnetic High, and the

"Handle" target

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

https://images.newsfilecorp.com/files/8712/290030_9acfe316f4dd4a7d_002full.jpg

Table 1. Recent Wenot Drill Results*

DDH

FROM

(m)

TO

(m)

INTERVAL

(m)

Grade

(g/t Au)

Zone

25ODD-158

54.0

55.5

1.5

0.85

Saprolite

420.0

433.5

13.5

7.74

Volcanics

including

426.1

429.2

3.1

28.03

468.0

472.5

4.5

0.54

499.7

500.9

1.2

0.98

507.8

511.2

3.4

0.50

Dike Corridor

516.1

560.5

44.4

1.45

including

547.9

551.5

3.6

6.00

585.6

586.9

1.3

0.82

Volcanics

590.0

592.7

2.7

2.57

666.1

671.8

5.7

0.62

682.3

692.9

10.6

1.18

CQFP

749.6

751.9

2.3

1.79

Sediments

25ODD-160

333.3

343.5

10.2

1.54

Dike Corridor

351.0

353.7

2.7

2.64

Volcanics

358.3

362.5

4.2

0.59

368.0

370.1

2.1

0.83

373.8

380.8

7.0

1.01

385.5

387.0

1.5

7.17

437.1

445.5

8.4

0.55

25ODD-161

226.5

228.0

1.5

0.79

Sediments

241.5

242.6

1.1

2.37

262.0

264.3

2.3

4.03

362.3

371.7

9.4

5.06

CQFP

including

370.5

371.7

1.2

26.96

436.5

440.2

3.7

1.40

Dike Corridor

470.0

473.1

3.1

2.07

Volcanics

541.0

542.0

1.0

1.21

545.5

547.0

1.5

1.52

583.5

592.5

9.0

0.31

600.0

601.5

1.5

8.47

627.0

628.5

1.5

1.41

25ODD-162

77.5

78.0

0.5

2.41

Saprolite

198.5

201.1

2.6

0.42

Sediments

288.5

289.7

1.2

7.10

403.8

413.6

9.8

6.30

CQFP

including

412.5

413.6

1.1

37.31

452.5

455.5

3.0

4.56

Volcanics

499.5

506.2

6.7

4.15

including

504.4

505.6

1.2

12.24

519.9

522.1

2.2

2.11

26ODD-163

364.9

380.3

15.4

2.61

CQFP

including

370.5

372.0

1.5

7.09

including

376.3

377.7

1.4

12.60

466.0

467.0

1.0

9.07

Sediments

484.3

491.1

6.8

1.97

556.9

563.3

6.4

2.84

including

556.9

558.0

1.1

14.51

572.4

574.0

1.6

0.70

SQFP

26ODD-164

290.5

300.5

10.0

2.93

Dike Corridor

350.0

359.0

9.0

2.12

384.5

396.0

11.5

2.78

including

386.0

389.0

3.0

7.41

477.5

478.5

1.0

1.83

Diorite, CQFP

493.3

494.5

1.2

2.71

502.5

512.5

10.0

2.40

DDH

FROM

(m)

TO

(m)

INTERVAL

(m)

Grade

(g/t Au)

Zone

Sediments

including

505.0

509.0

4.0

4.43

534.0

545.0

11.0

2.46

including

539.6

540.8

1.2

16.46

617.5

622.8

5.3

1.56

SQFP

26ODD-165

216.3

226.5

10.2

0.86

Dike Corridor

262.0

266.7

4.7

0.29

277.0

292.5

15.5

0.61

CQFP

350.0

355.0

5.0

0.34

Sediments

363.5

364.5

1.0

2.34

373.5

376.5

3.0

0.69

391.3

397.0

5.7

0.58

401.5

403.0

1.5

1.76

465.5

468.5

3.0

1.46

26ODD-166

219.2

229.4

10.2

5.61

Shear Zone

including

219.2

224.6

5.4

10.02

248.0

258.1

10.1

0.93

CQFP

263.2

267.3

4.1

0.87

Sediments

279.0

285.0

6.0

0.66

298.0

302.5

4.5

0.70

306.5

310.7

4.2

1.64

315.4

326.5

11.1

1.37

331.5

339.5

8.0

1.24

347.0

357.5

10.5

2.55

Diorite, Sediments

364.8

379.2

14.4

1.48

406.0

412.0

6.0

1.76

Sediments

437.5

438.5

1.0

5.02

446.8

449.1

2.3

0.89

SPOR

477.1

482.3

5.2

1.45

Sediments

DDH

FROM

(m)

TO

(m)

INTERVAL

(m)

Grade

(g/t Au)

Zone

*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 0.30 g/t Au with maximum 3.0m internal dilution is applied. **If indicated, a maximum 5.0m internal dilution was

applied. All grades are uncapped unless otherwise noted.

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 and surrounding samples within

deemed gold zones, 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 and approved 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 deposit, 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.

The Company completed 39,000m of diamond drilling in 2025. An updated MRE is planned for Q1 2026

to be followed by an updated Preliminary Economic Assessment ("PEA") in Q2, that will include the

Wenot open pit deposit and the adjacent Gilt underground deposit. Three drills have commenced the

2026 drill program: at Wenot the focus is 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. 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 brownfields project benefits from known metallurgical

recoveries, existing tailings facilities, and infrastructure, including an on-site airstrip, and road access,

connecting 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

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

release.

Table 2. Drill Hole Coordinates

Hole ID

Azimuth

(degrees)

Inclination

(degrees)

Easting

Northing

Length

(m)

Status

25ODD-158

174

-54

305128

602020

784.6

Reporting

25ODD-160

358

-51

306025

601209

505.0

Reporting

25ODD-161

356

-49

304580

601428

688.0

Reporting

25ODD-162

356

-52

304780

601400

644.0

Reporting

26ODD-163

175

-54

304480

601917

613.9

Reporting

26ODD-164

175

-50

305131

601902

631.5

Reporting

26ODD-165

177

-50

304281

601874

571.5

Reporting

26ODD-166

175

-51

304479

601849

496.7

Reporting

Cautionary Note Regarding Forward-Looking Statements

This news release includes certain "forward-looking statements" under applicable Canadian securities

legislation. Forward-looking statements include, but are not limited to, statements with respect to the

timing of completion of the drill program, and the potential for the Omai Gold Project to allow Omai to

build significant gold Mineral Resources at attractive grades, and forward-looking statements are

necessarily based upon a number of estimates and assumptions that, while considered reasonable,

are subject to known and unknown risks, uncertainties and other factors which may cause the actual

results and future events to differ materially from those expressed or implied by such forward-looking

statements. Such factors include, but are not limited to general business, economic, competitive,

political and social uncertainties; delay or failure to receive regulatory approvals; the price of gold and

copper; and the results of current exploration. Further, the Mineral Resource data set out in this news

release are estimates, and no assurance can be given that the anticipated tonnages and grades will

be achieved or that the indicated level of process recovery will be realized. 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, readers should

not place undue reliance on forward-looking statements. The Company disclaims any intention or

obligation to update or revise any forward-looking statements, whether as a result of new information,

future events or otherwise, except as required by law.

Cautionary Note Regarding Mineral Resource Estimates

Until mineral deposits are actually mined and processed, Mineral Resources must be considered as

estimates only. Mineral Resource Estimates that are not Mineral Reserves have not demonstrated

economic viability. The estimation of Mineral Resources is inherently uncertain, involves subjective

judgement about many relevant factors and may be materially affected by, among other things,

environmental, permitting, legal, title, taxation, socio-political, marketing, or other relevant risks,

uncertainties, contingencies and other factors described in the Company's public disclosure available

on SEDAR+ at

www.sedarplus.ca

.

The Inferred Mineral Resource in this estimate has a lower level

of confidence than that applied to an Indicated Mineral Resource and must not be converted to a

Mineral Reserve. It is reasonably expected that the majority of the Inferred Mineral Resource could be

upgraded to an Indicated Mineral Resource with continued exploration. The accuracy of any Mineral

Resource Estimates is a function of the quantity and quality of available data, and of the assumptions

made and judgments used in engineering and geological interpretation, which may prove to be

unreliable and depend, to a certain extent, upon the analysis of drilling results and statistical

inferences that may ultimately prove to be inaccurate. Mineral Resource Estimates may have to be

re-estimated based on, among other things: (i) fluctuations in mineral prices; (ii) results of drilling, and

development; (iii) results of future test mining and other testing; (iv) metallurgical testing and other

studies; (v) results of geological and structural modeling including block model design; (vi) proposed

mining operations, including dilution; (vii) the evaluation of future mine plans subsequent to the date