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Update ON the Mosseau Drill Program and Details of New Fall, 2025 Exploration Program

Exploration Programs

UPDATE ON THE MOSSEAU DRILL PROGRAM AND DETAILS OF NEW FALL, 2025

EXPLORATION PROGRAM

Vancouver, British Columbia / October 3, 2025 - Harvest Gold Corporation (TSXV: HVG)

(“Harvest Gold” or the “Company”) is pleased to announce the latest update on the drill program

at Mosseau , its flagship property in the Urban Barry Belt in Quebec’s Abitibi region and the

commissioning of a new exploration program focused on the southern portion of Mosseau and the

100% owned Labelle property.

DRILLING UPDATE

Harvest Gold has completed three (3) additional holes totalling 654 metres in the central part of

the Mosseau property, bringing the total completed to date to 14 drill holes for 3,030 metres.

The recently completed holes targeted the central portion of the property, where historical

prospecting and diamond drilling work suggested strong potential and continuity of the gold

mineralization (See Figure 1). Samples are being sent to the laboratory as each hole is logged, and

assay results from the initial holes are expected within the next few weeks.

In addition, t he Company has temporarily paused its ongoing diamond drill program at the

Mosseau Property in recognition of the local First Nations Cultural Week, the National Day of

Truth and Reconciliation and the annual fall hunting season.

Rick Mark, President and CEO of Harvest Gold, state s: “Harvest Gold is dedicated to advancing

the Mosseau Project in a manner that is respectful of Indigenous traditions and community

activities. Temporarily halting our drill program at this time reflects our commitment to working

collaboratively with our partners and shareholders.”

The Mosseau Property straddles the Eeyou Istchee –James Bay and Abitibi territories, as well as

two hunting zones in Quebec (Zones 13 and 16). With hunting season in this area extending from

September 27 to October 26, Harvest Gold plans to resume drilling in the central part of the

Mosseau Property following the annual fall hunting season.

Harvest Gold is committed to building and maintaining positive, transparent, and mutually

beneficial relationships with local Indigenous communities. The Company believes that advancing

exploration activities with respect and understanding is fundamental t o responsible resource

development.

FALL 2025 EXPLORATION PROGRAM

Harvest Gold has engaged IOS Geosciences of Chicoutimi , Quebec to operate its fall field

exploration program, which will include soil sampling , prospecting and mapping across parts of

HARVEST GOLD CORPORATION

Suite 400 – 1681 Chestnut Street

Vancouver, BC V6CJ 4M6

T: (604) 737-2303

F: (604) 737-1140

E: [email protected]

W: www.harvestgoldcorp.com

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the Mosseau and LaBelle properties (see Figures 2 and 3). This work is designed to build on recent

high-resolution magnetic survey results and to further refine drill targets for upcoming exploration

campaigns.

The soil sampling program, to begin on October 27 , after hunting season, will include the

collection of over 1,000 samples. Sampling lines will be spaced at 200 metres, oriented

perpendicular to the known ice-flow direction and be taken at 25-metre intervals along each line.

The Company will also be undertaking a prospecting and mapping program in areas of the property

that have seen little to no previous field work. This work is designed to broaden the geological

understanding of underexplored areas and to help refine future exploration targeting.

About Harvest Gold Corporation

Harvest Gold is focused on exploring for near-surface gold deposits and copper -gold porphyry

deposits in politically stable mining jurisdictions. Harvest Gold’s board of directors, management

team and technical advisors have collective geological and financing experience exceeding 400

years.

Harvest Gold has three active gold projects focused in the Urban Barry area, totalling 377 claims

covering 20,016.87 ha, located approximately 45-70 km west of Gold Fields Limited’s - Windfall

Deposit (Figure 4).

Harvest Gold acknowledges that the Mosseau Gold Project straddles the Eeyou Istchee-James Bay

and Abitibi territories. Harvest Gold is committed to developing positive and mutually beneficial

relationships based on respect and transparency with local Indigenous communities.

Harvest Gold’s three properties, Mosseau, Urban -Barry and LaBelle, together cover over 50 km

of favorable strike along mineralized shear zones.

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Figure 1: Progress of drill holes completed – Northern and Central Target Area

Figure 2: Planned Soil samples on magnetics along the southeastern extension of the Mosseau property

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Figure 3: Planned soil samples on magnetics along the LaBelle property

Figure 4: Project Location: Urban-Barry Greenstone Belt

SAMPLING, QAQC, AND LABORATORY ANALYSIS SUMMARY

All core logging and sampling completed by Harvest Gold as part of its diamond drilling program is subject

to a strict standard for Quality Control and Quality Assurance (QAQC), which includes the insertion of

certified reference materials (standards), blank materials, and field duplicate analysis. NQ-diameter sawed

half-core samples from the drilling program at Mossseau were securely sent by Company geologists to

AGAT Laboratories Ltd. (AGAT), with sample preparation in Val -d’Or, Québec and analysis in Thunder

Bay, Ontario, where samples were processed for gol d analysis by 50 -gram fire assay with an atomic

absorption finish. Samples from selected holes were securely sent to AGAT in Calgary, Alberta, for multi-

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element analysis (including silver) by inductively coupled plasma (ICP) method with a four-acid digestion.

AGAT sample preparation and laboratory analysis procedures conform to requirements of ISO/IEC

Standard 17025 guidelines and meet the requirements und er NI 43-101 and CIM best practice guidelines.

AGAT is independent of LaFleur Minerals.

Qualified Person Statement

All scientific and technical information in this news release has been prepared and approved by

Louis Martin, P.Geo., Technical Advisor to the Company and considered a Qualified Person for

the purposes of NI 43-101.

ON BEHALF OF THE BOARD OF DIRECTORS

Rick Mark

President and CEO

Harvest Gold Corporation

For more information please contact:

Rick Mark or Jan Urata

@ 604.737.2303 or [email protected]

Neither 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.

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 Harvest Gold expects to occur, are forwa rd 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 differ materially from those in the forward-looking statements. Factors that

could cause the actual results to differ materially from those in forward looking statements include

market prices, exploitation and exploration successes, and 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

differ 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 securities laws, the Company undertakes no

obligation to update these forward -looking statements in the event that management's beliefs,

estimates or opinions, or other factors, should change.