LOT.V · 2026-06-30 12:00:00

TomaGold Continues to Expand Berrigan Mine at Depth with a New Major 204.25 m Intersection in the Berrigan Deep Zone

Exploration Programs

TSXV: LOT OTCPK: TOGOF PRESS RELEASE

TomaGold Continues to Expand Berrigan Mine at Depth with a New Major

204.25 m Intersection in the Berrigan Deep Zone

Highlights

• Major intersection of 204.25 m grading 2.05% ZnEq (0.48 g/t AuEq) (from 553.90 m to 758.15 m) in

extension hole TOM-25-011EXT, underscoring the scale of the mineralized system within the Berrigan

Deep Zone, including:

o 31.31% ZnEq (7.38 g/t AuEq) over 2.40 m (from 554.40 m to 556.80 m)

o 5.93% ZnEq (1.38 g/t AuEq) over 4.60 m (from 681.55 m to 686.15 m)

o 5.90% ZnEq (1.38 g/t AuEq) over 7.45 m (from 697.05 m to 704.50 m)

o 4.62% ZnEq (1.08 g/t AuEq) over 14.40 m (from 591.00 m to 605.40 m)

• Additional high-grade intersections: Prior to reaching the Berrigan Deep Zone, the hole extension

also intersected a zone grading 3.02% ZnEq over 12.45 m (from 498.30 m to 510.75 m), including

16.23% ZnEq over 1.40 m. In addition, the original hole TOM-25-011 had previously identified several

higher-level zones of interest, including 14.14% ZnEq over 2.00 m (from 307.50 m to 309.50 m).

• Results pending for holes TOM-25-009EXT, TOM-25-010EXT, TOM-25-012EXT and TOM-25-013EXT:

Mineralization was consistently observed in drill core recovered from the four other extension holes,

for which assay results are pending.

• Geological model validation: These results conﬁrm the vertical continuity of the Berrigan Mine

Project's polymetallic hydrothermal system and validate the modeled extensions at depth. Preliminary

3D model viewer: https://www.mininghub.com/3d/v/4zxSrVUh.

Montréal, Québec, June 30, 2026 ‒ TOMAGOLD CORPORATION (TSXV: LOT; OTCPK: TOGOF)

(“TomaGold” or the “Company”) is pleased to announce assay results from the ﬁrst of ﬁve extension holes,

TOM-25-011EXT, completed as part of Phase 2 of its drilling program at the Berrigan Mine Project, located

in the Chibougamau Mining Camp of Québec. The extension of hole TOM-25-011 was designed to test

modeled conductive plates at depth within the Berrigan Deep Zone. The hole, which reached a ﬁnal depth

of 834.70 m, intersected a 204.25 m mineralized envelope (see Figures 1 and 2), as well as several gold-

and zinc-rich lenses within the broader mineralized structure.

David Grondin, President and CEO of TomaGold, said: “The extension of hole TOM-25-011EXT, which

intersected 2.05% ZnEq (0.48 g/t AuEq) over 204.25 m (including 31.31% ZnEq over 2.40 m), has

conﬁrmed the continuity and extent of the Berrigan Deep mineralized system following its discovery by hole

TOM-25-015 in December last year, which returned 5.08% ZnEq (1.19 g/t AuEq) over 98.50 m (including

23.20% ZnEq over 4.90 m). The interception of a mineralized envelope spanning more than 224 metres

underscores the scale of this hydrothermal system. Beyond the high-grade zones already delineated in its

upper portion, this broad mineralized interval at depth demonstrates the persistence of mineralization and

increases our conﬁdence in the system’s potential for further expansion. These results support the

continuation of exploration, drilling and geological modelling activities across the project.”

Figure 1 : Vertical section of Berrigan Deep Zone, looking west

Figure 2: Horizontal section of Berrigan Deep Zone, looking southwest

The Company is also encouraged by the consistent mineralization observed in drill core recovered from the

four remaining extension holes, TOM-25-009EXT, TOM-25-010EXT, TOM-25-012EXT and TOM-25-013EXT.

Samples have been prepared and submitted for laboratory analysis, with complete assay results expected

over the coming weeks.

Geological Context and District-Scale Potential

The results from hole TOM-25-011EXT further validate the Company's geological interpretation of the

Berrigan Deep Zone, conﬁrming a deeply rooted polymetallic hydrothermal system (zinc, gold, silver and

copper) beneath the historic Berrigan Mine.

Lithological and structural controls: The 204.25-metre mineralized envelope intersects a sequence of

ultramaﬁc to maﬁc rocks composed primarily of alternating serpentinitized peridotites, komatiites,

pyroxenites and gabbros. Technical data indicate that the mineralization is strongly controlled by regional

structures. It is concentrated along shear zones and is localized within contact breccias between diferent

lithological units, which act as physical barriers favouring the accumulation of mineralizing ﬂuids.

Mineralization styles and geochemical signature: Mineralization at Berrigan Deep is characterized by

host-rock replacement and occurs as stockwork vein and veinlet networks, sheared undulating veins, and

coarse semi-massive to massive sulphide masses. The sulphide assemblage is dominated by abundant

sphalerite (zinc) and pyrrhotite.

Detailed analysis of the drilling data reveals a distinctive metallogenic signature. Although copper (in the

form of chalcopyrite) represents a relatively minor component of the overall mineralized envelope, it

exhibits a spatial correlation with higher gold grades. For example, the interval that returned 5.89 g/t Au

(31.31% ZnEq) is directly associated with a copper peak of 1.28% Cu. This geochemical correlation

suggests the presence of speciﬁc hydrothermal conduits or a distinct, higher-temperature mineralizing

event, opening new exploration opportunities within the system itself.

Alteration and next geophysical steps: The system reﬂects prolonged and recurrent hydrothermal ﬂuid

circulation, marked by pervasive alteration of the host rock that has transformed the original pyroxenites

and peridotites into massive assemblages of chlorite, talc and carbonates (dolomite/calcite).

This sulphide geometry and pervasive alteration produce a distinct electrical signature. Downhole (BHEM)

and surface (UTEM) geophysical surveys currently underway will enable more precise mapping of these

structural conductors. These 3D vector datasets will be critical in guiding future drilling toward the core of

the Berrigan Deep Zone and potentially toward additional zones of gold and copper enrichment.

Table 1: Results from Hole TOM-25-011EXT

Hole ID From

(m)

Length

(m)

ZnEq

(%)

AuEq

(g/t)

(%)

TOM-25-011EXT 498.30 510.75 12.45 3.02 0.71 0.52 1.30 0.02 1.10

Including 498.30 499.70 1.40 16.23 3.78 2.28 5.60 0.07 7.94

Including 507.85 510.75 2.90 4.52 1.06 1.02 1.51 0.02 0.76

and 522.25 524.20 1.95 3.26 0.76 0.27 5.81 0.04 1.97

and 553.90 758.15 204.25 2.05 0.48 0.35 2.43 0.04 0.58

and 553.90 605.40 51.50 3.26 0.77 0.58 6.11 0.09 0.65

Including 554.40 556.80 2.40 31.31 7.38 5.89 98.21 1.28 1.75

Including 560.60 561.75 1.15 4.06 0.94 0.15 2.50 0.06 3.39

Including 574.65 576.90 2.25 3.17 0.74 0.60 1.62 0.04 0.85

Including 591.00 605.40 14.40 4.62 1.08 0.84 3.44 0.05 1.35

Including 639.25 645.00 5.75 3.20 0.74 0.43 1.27 0.02 1.61

Including 655.50 665.50 10.00 3.29 0.77 0.41 1.67 0.02 1.77

Including 681.55 686.15 4.60 5.93 1.38 0.85 1.64 0.02 2.88

Including 697.05 704.50 7.45 5.90 1.38 0.88 3.24 0.04 2.56

Including 715.50 722.00 6.50 4.17 0.97 0.61 1.70 0.02 1.93

Including 730.60 732.30 1.70 1.25 0.29 0.26 0.61 0.01 0.29

Including 739.50 758.15 18.65 3.72 0.88 0.95 2.31 0.03 0.10

and 774.00 778.40 4.40 1.78 0.42 0.44 0.87 0.01 0.11

Notes:

• The reported widths represent core lengths. True width is estimated to be approximately 80-85% of the core

length, depending on the deviation angles.

• ZnEq and AuEq are calculated using the Company’s standard parameters.

• AuEq calculation was based on US$4,150/oz Au, $51.34/oz Ag, US$5.023/lb Cu and $1.392/lb Zn. AuEq = Au g/t

+ (Ag g/t × 0.01237) + (Cu ppm × 0.000083) + (Zn ppm × 0.000023), applying metallurgical recovery factors of 95%

for zinc, 85% for gold and silver, and 90% for copper, based on a metallurgical report on Berrigan Mine zinc

material prepared by Process Research Associates Ltd. in February 2002 and on recoveries from nearby deposits

for gold, silver and copper.

• ZnEq calculation was based on US$4,047/oz Au, $50.22/oz Ag, US$4.796/lb Cu and $1.390/lb Zn. ZnEq =

Zn ppm + (Ag g/t × 527) + (Au g/t x 42466) + (Cu ppm × 3.45) / 10,000, applying metallurgical recovery factors of

95% for zinc, 85% for gold and silver, and 90% for copper, based on a metallurgical report on Berrigan Mine zinc

material prepared by Process Research Associates Ltd. in February 2002 and on recoveries from nearby deposits

for gold, silver and copper.

Table 2: Drill Hole Collar

Hole ID Azimuth Dip Length UTM - East UTM - North Elevation

TOM-25-011EXT 130.49 -55.03 834.7 542320 5532728 390

About the Berrigan Mine Project

The Berrigan Mine property consists of 16 claims totalling 483 hectares located 4 km north-northwest of

the town of Chibougamau. TomaGold has an option to acquire 100% of the property from Chibougamau

Independent Mines Inc.

The property has been the subject of more than one historical estimate. Met-Chem Canada Inc. prepared

the most recent of these in April 2001 in a report titled: “Pre-feasibility study: Etude Conceptuelle, Projects

Berrigan and Tortigny” by Chuinard et al. In the report, a resource estimate completed using polygonal

estimation techniques stated 1.39 Mt grading 3.17% Zn and 1.77 g/t Au on the main Berrigan Mine zone.

No resource classiﬁcations were given for the resource (GM61359).

The mineral resource estimate presented above is historical in nature and was not prepared in accordance

with National Instrument 43-101 standards. Accordingly, the reader is cautioned not to rely on this

estimate, as the Company is not treating the estimate as a current mineral resource. The qualiﬁed person

has not done suficient work to make the resource current. Substantial data compilation, veriﬁcation, and,

potentially, additional drilling and resampling would be required by a qualiﬁed person before the historical

estimate could be classiﬁed as a current mineral resource. There can be no assurance that any portion of

the historical mineral resource will ultimately be conﬁrmed or demonstrated to be economically viable.

For further information regarding the Berrigan Mine Project, please consult the press release dated

September 13, 2023.

Technical Disclosure

The drilling program was managed by Explo-Logik of Val-d’Or, Québec. Drill core was split in half, with one

half submitted to AGAT Laboratories at Val-d’Or for analysis. Gold was analyzed by ﬁre assay (50 g) with

atomic absorption ﬁnish, while base metals were analyzed by four-acid digestion with ICP-OES ﬁnish.

Samples with gold grades greater than 10 g/t are reprocessed using metallic screening with a 106 µm

cutof. The processed material is split and analyzed by ﬁre assay with ICP -OES ﬁnish to extinction. A

separate split is prepared to independently analyze mineralized intervals with a target grade greater than

1.00% Cu-Zn using a Na₂O₂ fusion with ICP-OES or ICP-MS ﬁnish. Sample preparation duplicates, certiﬁed

reference standards, and blanks are inserted into the sample stream.

The technical content of this press release has been reviewed and approved by Jean Laﬂeur, P .Geo., Vice

President of Exploration of the Company, and Suzie Tremblay, P .Geo., Vice President of Operations at Explo-

Logik Inc. and a consultant to TomaGold, each acting as a Qualiﬁed Person under National Instrument 43-

101.

About TomaGold

TomaGold Corp. (TSXV: LOT, OTCPK: TOGOF) is a Canadian junior mining company focused on the

acquisition, exploration, and development of high-potential precious and base metal projects, with a

primary focus on gold and copper in Québec and Ontario. The Company’s core assets are located in the

Chibougamau Mining Camp in northern Québec, where it owns the Obalski gold-copper-silver project and

holds options to acquire 12 additional properties, including the Berrigan Mine, Brosnan, Radar and Dufault

projects. TomaGold also holds a 24.5% joint venture interest in the Baird gold property near the Red Lake

Mining Camp in Ontario. In addition, the Company has lithium and rare earth element (REE) projects in the

James Bay region, strategically positioned near significant recent discoveries.

Contact:

David Grondin

President and Chief Executive Officer

(514) 583-3490

www.tomagoldcorp.com

Follow TomaGold:

YouTube: h*ps://www.youtube.com/@tomagoldcorpora:on

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Facebook: https://www.facebook.com/TomaGoldCorporation

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Cautionary Statement on Forward-Looking Information

This news release includes certain statements that may be deemed “forward -looking statements” . All

statements in this news release, other than statements of historical facts, that address events or

developments that the Company expects to occur, are forwar d-looking statements. Forward-looking

statements are statements that are not historical facts and are generally, but not always, identiﬁed by the

words “expects” , “plans” , “anticipates” , “believes” , “intends” , “estimates” , “projects” , “potential” and

similar expressions, or that events or conditions “will” , “would” , “may” , “could” or “should” occur. Although

the Company believes the expectations expressed in such forward -looking statements are based on

reasonable assumptions, such statements are not guarantees of future performance and actual results

may diMer materially from those in the forward-looking statements. Factors that could cause the actual

results to diMer materially from those in forward -looking statements include the potential results of

exploration and drilling activities, market prices, continued availability of capital and ﬁnancing, and general

economic, market or business conditions. Investors are cautioned that any such statements are not

guarantees of future performance and actual results or developments may diMer materially from those

projected in the forward-looking statements. Forward-looking statements are based on the beliefs,

estimates and opinions of the Company's management on the date the statements are made. Except as

required by applicable securities laws, the Company undertakes no obligation to update these forward-

looking statements in the event that management’s beliefs, estimates, opinions, or other factors should

change.

Neither TSX Venture Exchange nor its Regulations 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.

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