Vancouver, British Columbia--(Newsfile Corp. - September 24, 2026) - GREAT ATLANTIC RESOURCES CORP. (TSXV: GR) (the "Company" or "Great Atlantic") is pleased to announce its wholly-owned subsidiary, Golden Promise Mines Inc. ("Golden Promise Mines"), has received gold assays for rock samples collected during the 2025 trenching program at the Company's 100% owned Golden Promise Property, central Newfoundland.

2025 Trench No. 2 — Southwest Region of Golden Promise Property

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"The occurrence of highly anomalous gold across multiple trench locations, together with the associated copper geochemistry, demonstrates additional areas for us to target beyond the current defined resource at Golden Promise," states Anderson, President and CEO of Great Atlantic Resources. "With numerous gold-bearing occurrences across the property and land package, systemic work in these areas remains an important part of our resource expansion and discovery strategy."

Five rock grab samples from a section of 2025 Trench No. 2 returned gold values of 0.531 grams/ tonne (g/t) to 1.004 g/t (excavated rubble, subcrop and bedrock). These results plus gold assays for rock grab samples from three other nearby 2024 and 2025 trenches confirm sporadic gold mineralization over a northeast – southwest corridor at least 135 meters in length.

Four trenches were excavated during the 2025 trenching program by Golden Promise Mines within the southwest region of the Golden Promise Property (in Licence 036105M). Two of the trenches (2025 Trench Nos. 1 and 2) were excavated near two 2024 trenches (2024 Trench Nos. 1 and 2) with these four subparallel trenches covering a northeast to southwest distance of approximately 130 meters. Rock samples containing copper mineralization and highly anomalous levels for gold were previously collected by Golden Promise Mines during 2024 and 2025 at these 2024 trench sites including bedrock grab samples exceeding 1% copper and up to 1.008 g/t gold in a narrow zone in 2024 Trench No. 1 (see Great Atlantic news releases of February 12, 2025; September 4, 2025; and September 10, 2026, for details of this sampling).

Figure 1: 2024–2025 Trenches – Southwest Region of Golden Promise Property (Lic. 036105M)

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Rock samples were collected during 2025 at the four 2025 trenches, with samples collected from rubble excavated from the trenches and from subcrop and bedrock within the trenches.

Seven rock grab samples collected within an approximately 17 meters long section in the southern half of 2025 Trench No. 2 returned highly anomalous values for gold (0.289 – 1.004 g/t), these samples collected from pieces of highly oxidized (some crumbly) and altered rubble and similar material in subcrop and bedrock. Most of these samples contain pyrite in variable amounts. Chalcopyrite was noted in one sample from this material. These samples are:

• 36105-25-66: 830 ppb gold (0.830 g/t) (collected from a piece of highly oxidized and altered rubble within the trench (float or subcrop) with pyrite)

• 36105-25-67: 572 ppb gold (0.572 g/t) (collected from a piece of highly oxidized and silicified excavated rubble (possible float) with quartz veining and pyrite)

• 36105-25-73: 667 ppb gold (0.667 g/t) (collected from a piece of highly oxidized, crumbly and silicified excavated rubble (possible float) with abundant pyrite and some chalcopyrite)

• 36105-25-74: 471 ppb gold (0.471 g/t) (collected from a piece of highly oxidized and crumbly excavated rubble (possible float))

• 36105-25-76: 1,004 ppb gold (1.004 g/t) (collected from multiple pieces of highly oxidized and silicified subcrop with abundant pyrite at the bottom of the trench)

• 36105-25-77: 531 ppb gold (0.531 g/t) (collected from bedrock at the bottom of the trench consisting of highly oxidized and crumbly rock (possible fault) with abundant pyrite)

• 36105-25-78: 289 ppb gold (0.289 g/t) (collected from multiple pieces of highly oxidized, pyrite-bearing excavated rubble (possible float))

Of note sample 36105-25-61, a grab sample collected from bedrock of siliceous or silicified metasediment with pyrite, returned an anomalous gold value of 119 ppb. This sample was collected within the northern region of 2025 Trench No. 2.

Figure 2: 2025 Trench No. 2 – Golden Promise Property (Lic. 036105M)

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Some rock samples from 2025 Trench Nos. 1, 3 and 4 returned anomalous gold values. Trench No. 1 was excavated approximately 75 meters northeast of 2025 Trench No. 2 and between 2024 Trench Nos. 1 and 2. Four samples from 2025 Trench No. 1 exceeded 200 ppb gold (>0.2 g/t Au). These samples are:

• 36105-25-53: 252 ppb gold (0.252 g/t) (collected from metasediment subcrop within the trench with pyrite-bearing quartz veins)

• 36105-25-54: 269 ppb gold (0.269 g/t) (collected from a piece of rubble excavated from the trench (possible float) consisting of dark grey – black shale with pyrite-bearing quartz veins)

• 36105-25-55: 315 ppb gold (0.315 g/t) (collected from subcrop in bottom of the trench consisting of partially silicified metasediment with pyrite bearing quartz veins). Located approximately 3 meters south of 36105-25-53

• 36105-25-60: 203 ppb gold (0.203 g/t) (collected from highly oxidized, crumbly and partially silicified metasediment subcrop with pyrite in northeast wall of the trench)

Figure 3: 2025 Trench No. 1 – Golden Promise Property (Lic. 036105M)

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Trench No. 3 and 4 of the 2025 program were excavated approximately 120 to 210 meters south-southwest of 2025 Trench No. 2. Three grab samples from these trenches exceeded 100 ppb for gold (>0.1 g/t). A grab sample of silicified metasediment bedrock with pyrite from Trench No. 3 returned 149 ppb gold (0.149 g/t) while a subcrop grab sample of similar material at the same location returned 132 ppb gold (0.132 g/t). A grab sample of metasediment subcrop with quartz veining from Trench No. 4 returned 110 ppb gold (0.110 g/t).

The 2025 rock samples from the 2025 trench sites discussed in this news release were analyzed by Eastern Analytical Ltd., a certified laboratory independent of Golden Promise Mines and Great Atlantic. The samples were analyzed for gold by fire assay – AA (30-gram subsamples from - 150mesh pulverized fractions). These samples were also analyzed for 34 elements. This involved total dissolving of 200mg subsamples from the pulverized fractions and analysis by ICP-OES. The multielement analytical results for most of the samples are pending.

Figure 4: Golden Promise Property with Gold Occurrences

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Management of Golden Promise Mines are planning additional exploration work within the area of the 2024 and 2025 trenches discussed in this news release including geophysical surveys and additional trenching to assist in planning a diamond drilling program for this target area.

The Golden Promise Property hosts gold bearing quartz veins in various regions of the property, including the Jaclyn Zone quartz vein systems, Shawn's Shot quartz vein, Otter Brook occurrence, Linda / Snow White quartz vein system and the Gabbro Zone occurrence. The property is located within the Exploits Subzone of the Newfoundland Dunnage Zone. It is located approximately 50 kilometers northeast of the Valentine Gold Mine of Equinox Gold Corp. which is also located within the Exploits Subzone. The Golden Promise Property is the largest and most advanced of seven central Newfoundland gold properties owned by Golden Promise Mines. One of these properties (Golden Trust) is located within one kilometer of the Valentine Gold Mine of Equinox Gold Corp. Readers are warned that mineralization at the Valentine Gold Mine is not necessarily indicative of mineralization at the Golden Promise Property or any of the other central Newfoundland gold properties of Golden Promise Mines.

Readers are warned that pre-2017 historic results stated in Figure 4 have not been verified by Great Atlantic or Golden Promise Mines.

Figure 5: Golden Promise and Golden Trust Properties within the Central Newfoundland Gold Belt

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David Martin, P.Geo., (New Brunswick and Newfoundland and Labrador), a Qualified Person as defined by NI 43-101 and VP Exploration for Great Atlantic, reviewed and approved the technical information contained in this News Release.

On Behalf of the board of directors

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About Great Atlantic Resources Corp.: Great Atlantic Resources Corp. is a Canadian exploration company focused on the discovery and development of mineral assets in the resource-rich and sovereign risk-free realm of Atlantic Canada, one of the number one mining regions of the world. Great Atlantic is currently surging forward building the company utilizing a Project Generation model, with a special focus on the most critical elements on the planet that are prominent in Atlantic Canada, Gold, Copper, Zinc, Nickel, Cobalt, Antimony and Tungsten.

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This press release includes certain statements that may be deemed "forward-looking statements". All statements in this release, other than statements of historical facts, that address future exploration drilling, exploration activities and events or developments that the Company expects, are forward looking statements. 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 or developments may differ materially from those in forward-looking statements. Factors that could cause actual results to differ materially from those in forward-looking statements include exploitation and exploration successes, continued availability of financing, and general economic, market or business conditions.

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.

Great Atlantic Resources Corp.
888 Dunsmuir Street - Suite 888, Vancouver, B.C., V6C 3K

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Source: Great Atlantic Resources Corp.