• Assay results for drill holes GD-26-414, GD-26-426, GD-26-439, GD-26-450, and GD-26-478 confirm mineable widths and grades of gold-mineralization over broad intervals confirming the continuity that has significantly expanded the high-grade core of the Surebet system that remains open for expansion both laterally and to depth.
• Additionally, the recently discovered volcanic wedge zones have been renamed to Big Bulk Zones based on the broad extent of gold mineralization with confirmed intervals of 10 – 58 meters with grades ranging from 0.39 g/t AuEq up to 2.04 g/t AuEq. This demonstrates strong untapped potential of this extensive gold system for expansion, that could be amiable to low-cost bulk mining methods. The Big Bulk Zones are all located above the valley floor located between the higher grade Bonanza and Golden Gate Zones; they remain open for expansion both laterally as well as to depth.
• Drill hole GD-26-478 intersected a mineralized interval that assayed 13.81 g/t Au over 4.85 meters, including 21.45 g/t Au over 3.09 meters (Au only assays, AuEq assays pending). This volcanic-hosted interval is part of the Golden Gate Zone in the Western part of the mineralized system and is characterized by multiple quartz-sulphide veins with numerous occurrences of Visible Gold to the Naked Eye (VG-NE) associated with galena, sphalerite, pyrrhotite, and chalcopyrite; see Figures 1a, 1b and 3.
  • An accompanying infographic is available at:

https://www.globenewswire.com/NewsRoom/AttachmentNg/6ab0a93c-ab83-40bc-8956-bf256e1118de

*For reported assay intervals for Au and AuEq calculations please see QA/QC Section on page 18

• • An accompanying infographic is available at:

https://www.globenewswire.com/NewsRoom/AttachmentNg/22ce5325-20ce-44f0-b74b-2a8c1882b720

• Drill hole GD-26-414 intersected a mineralized interval that assayed 10.26 g/t AuEq over 5.00 meters, including 18.30 g/t AuEq over 2.80 meters (only Au assays previously reported, see news reported on August 10, 2026). This intercept is part of the recently discovered Golden Gate Zone vein that is part of the 480 meter Northeastern step-out expansion this year, where mineralization consists of a broad quartz-sulphide vein and associated veinlets in the surrounding host rock containing several occurrences of VG-NE associated with massive pyrrhotite, sphalerite, galena and minor chalcopyrite; see Figures 2a, 2b and 3.
  • An accompanying infographic is available at:

https://www.globenewswire.com/NewsRoom/AttachmentNg/51f401b3-ae97-4f0d-b0da-3779c4e0fc0a

*For reported assay intervals for Au and AuEq calculations please see QA/QC Section on page 18

• • An accompanying infographic is available at:

https://www.globenewswire.com/NewsRoom/AttachmentNg/8ab482aa-e7d2-48c5-b46e-81cbff64766b

• The expanded Golden Gate Zone has a strike of 1.6 km E-W and 1.5 km N-S defining an area of 1.17 Km². Based on 2025 data, the Golden Gate Zone contains 18 lodes up to 14 meters with a combined thickness of up to 49 meters and with intercepts up to 34.52 g/t AuEq (34.47 g/t Au and 3.96 g/t Ag) over 39.00 meters (drill hole GD-24-260) and remains open for expansion; see Figure 3.
  • An accompanying infographic is available at:

https://www.globenewswire.com/NewsRoom/AttachmentNg/7286b2fb-c60c-4663-bfca-11b8c6560039

• Drill hole GD-26-426 intersected an interval in the Surebet Zone that assayed 5.27 g/t AuEq over 9.85 meters, within an extensive zone of 23.50 m grading 2.55 g/t AuEq (only Au assays previously reported, see news reported on August 21, 2026). Mineralization consists of breccia and stockwork containing VG-NE associated with massive to stringer galena, sphalerite, and pyrrhotite; see Figures 4a and 4b.
  • An accompanying infographic is available at:

https://www.globenewswire.com/NewsRoom/AttachmentNg/bf860ab0-2bd6-4608-8105-081b7226139e

*For reported assay intervals for Au and AuEq calculations please see QA/QC Section on page 18

• • An accompanying infographic is available at:

https://www.globenewswire.com/NewsRoom/AttachmentNg/5bea7e4f-475b-4aed-a6dd-cef8e7b3ab6c

• Drill hole GD-26-450 intersected the Surebet Zone that assayed 4.42 g/t AuEq over 6.96 meters, including 5.32 g/t AuEq over 5.00 meters, within a wider interval of 3.06 g/t AuEq over 12.97 meters. Mineralization is present in the form of sediment-hosted quartz breccia and stockwork veins that contain VG-NE, galena, sphalerite, pyrrhotite, pyrite, and chalcopyrite; see Figure 5a, and 5b.
  • An accompanying infographic is available at:

https://www.globenewswire.com/NewsRoom/AttachmentNg/8dccee0b-0acb-4fb9-9d5e-c3356e48c245

*For reported assay intervals for Au and AuEq calculations please see QA/QC Section on page 18

• • An accompanying infographic is available at:

https://www.globenewswire.com/NewsRoom/AttachmentNg/4920743a-2176-42f8-ab14-1b8583db69d9

• Visible Gold to the Naked Eye (VG-NE) has been intersected in multiple veins and shear zones from 52 out of 92 holes drilled in 2026 continuing to confirm consistency of gold mineralization widely disseminated throughout the Surebet system that remains open laterally and at depth; see Figures 6a, 6b, 6c, 6d and 6e.
  • An accompanying infographic is available at:

https://www.globenewswire.com/NewsRoom/AttachmentNg/272149aa-0499-49bb-8395-263b812651cd

• • An accompanying infographic is available at:

https://www.globenewswire.com/NewsRoom/AttachmentNg/14dbd241-9bbc-43e1-be2e-51951f2a4c1c

• • An accompanying infographic is available at:

https://www.globenewswire.com/NewsRoom/AttachmentNg/0823284f-798f-4167-9af4-40ac0501f250

• • An accompanying infographic is available at:

https://www.globenewswire.com/NewsRoom/AttachmentNg/1c239d56-9852-4d45-a36c-d8987d787088

• • An accompanying infographic is available at:

https://www.globenewswire.com/NewsRoom/AttachmentNg/870335f4-69e7-419d-a1e7-eae57a0e511c

• All drill holes from the 2026 drill program completed to date have intersected quartz-sulphide mineralization which typically coincide with high-grade gold mineralization. 92 out of 97 drill holes have been completed with a total of 45,616 meters drilled thus far in 2026.
• Only 9 holes with complete gold equivalent (AuEq) assays have been reported to date from a total of 97 drill holes for this year’s program; many more assays to come.
• The fully funded 2026 drill program comprises approximately 50,000 meters of systematic drilling, including 7 drill rigs targeting expansion of the known gold mineralization laterally and at depth, focused on the Bonanza, Eldorado, Golden Gate, Surebet and Whopper Zones.
• The total footprint of the Surebet system is 2.01 km2, which represents a 12% increase compared to 1.8 km2 defined prior to the 2026 drilling season. The Bonanza Zone has been expanded to 1.51 km2 from 1.27 Km2 (a 19% increase) and the Golden Gate Zone has been expanded to 1.17 Km2 from 0.85 Km2 (a 38% increase); see news August 24, 2026.

Goliath Resources Limited (TSX-V: GOT) (OTCQX: GOTRF) (FSE: B4IF) is pleased to report assay results for drill holes GD-26-414, GD-26-426, GD-26-439, GD-26-450, and GD-26-478 from the Surebet Discovery on its 100% owned Golddigger Property, Golden Triangle, British Columbia. All reported holes contain substantial gold-mineralization characterized by the widespread presence of VG-NE that continues to demonstrate increased confidence in the continuity as well as the expansion potential of the Surebet System. All drill holes completed during the 2026 program have intersected quartz-sulphide mineralization, with 92 out of 97 planned holes completed for a total of 45,616 meters drilled to date.

Mr. Roger Rosmus, Founder & CEO of Goliath states: “Assay results for these announced holes from the Surebet and Golden Gate Zones confirms additional gold-mineralization over broad intervals increasing confidence in the continuity and expansion potential of the high-grade part of the Surebet system that remains open. As well, the Bonanza Zone is located at the contact between sediments above and volcanics below, where the Golden Gate Zone comes together to form a broad mineralized zone where our newly discovered volcanic Big Bulk Zone is located, previously known as the wedge zone. I would also point out that all mineralized zones have multiple occurrences of visible gold in all the three distinct rock packages. Instead of getting near the edges of the system, it continues to expand. Drilling into the system at depth is still well above the valley floor, which is leading us to believe that the magmatic feeder zone, or zones, for the entire system is at or below the valley floor. As we do exploration drilling deeper and laterally, the Surebet system keeps getting larger. We look forward to announcing several gold equivalent assay results from a further 88 holes from the 2026 drill program”.

Drill hole GD-26-478 (Pad 20, Azimuth 75, Dip 72) intersected a mineralized interval that assayed 13.81 g/t Au over 4.85 meters, including 21.45 g/t Au over 3.45 meters (Au only assays, AuEq assays pending). This interval is hosted in the volcanic package and consists of multiple quartz-sulphide veins containing numerous VG-NE occurrences associated with galena, sphalerite, pyrrhotite, and chalcopyrite. This interval is part of the Golden Gate Zone and is located in the western side of the known mineralized system.

Drill hole GD-26-414 (Pad 1, Azimuth 115, Dip 81) intersected a newly discovered Golden Gate Zone vein that is part of the 480 meter Northeastern step-out expansion this year, that assayed 10.26 g/t AuEq over 5.00 meters, including 18.30 g/t AuEq over 2.80 meters (only Au assays previously reported, see news reported on August 10, 2026). Mineralization consists of a broad quartz-sulphide vein and associated veinlets in the surrounding host rock containing several occurrences of VG-NE associated with massive pyrrhotite, sphalerite, galena and minor chalcopyrite.

Drill hole GD-26-426 (Pad 15, Azimuth 310, Dip 79) intersected a Surebet Zone interval that assayed 5.27 g/t AuEq over 9.85 meters, within an extensive zone of 23.50 m grading 2.55 g/t AuEq (only Au assays previously reported, see news reported on August 10, 2026). Mineralization includes breccia and stockwork veining containing VG-NE associated with massive to stringer galena, sphalerite, and pyrrhotite.

Drill hole GD-26-450 (Pad 11, Azimuth 310, Dip 64) intersected a Surebet Zone interval that assayed 4.42 g/t AuEq over 6.96 meters, including 5.32 g/t AuEq over 5.00 meters, within a wider interval of 3.06 g/t AuEq over 12.97 meters. Mineralization occurs in sediment-hosted quartz breccia and stockwork veins that contain VG-NE, galena, sphalerite, pyrrhotite, pyrite, and chalcopyrite.

Drill hole GD-26-439 (Pad 6, Azimuth 38, Dip 58) intersected 4.97 g/t AuEq over 2.95 meters, including 14.49 g/t AuEq over 1.00 meters in the Surebet Zone.

All drill holes completed during the 2026 drill program have intersected quartz-sulphide mineralization which typically coincides with high-grade gold mineralization. 92 out of 97 planned drill holes have been completed with a total of 45,616 meters drilled thus far in 2026.

Table 1: Gold and gold equivalent assay results.

Table 2: Collar information for drill holes reported in this news release.

Surebet Discovery Highlights

• 100% of the drill holes completed prior to the 2026 drill season have intersected gold mineralization, clearly demonstrating remarkable grade continuity and widths, with over 1,500 diamond drill hole intercepts (pierce points); ~77% have 25 – 50 meter spacings. Demonstrating the geological team has a great understanding of the system and its predictability.
• The most recent ore mineralization model incorporating all available data prior to the 2026 drill program identified five (5) stacked gold-mineralized vein systems/zones: Bonanza, Surebet, Golden Gate, Whopper, and Eldorado. Collectively these zones comprise 46 gold-rich lodes/veins and multiple subvertical Eocene-aged dyke swarms. A good analogy for the stacked veins that are gently-dipping is the Pogo Mine in Alaska. (see Table 3 and Figure 7).

Table 3: Five main modelled gold rich zones and dykes, see isometric view in Figure 7 below.

• • An accompanying infographic is available at:

https://www.globenewswire.com/NewsRoom/AttachmentNg/61a15a13-ce40-4726-8587-a0ab5e7903bf

• 355 out of 386 drill holes representing 92% of holes drilled between 2021 – 2025 at Surebet contain VG-NE (see Figure 8):
  • An accompanying infographic is available at:

https://www.globenewswire.com/NewsRoom/AttachmentNg/8e2bb485-fb8a-42ef-8fee-48863e4a6336

• High-grade gold has been identified in three distinct rock types, including: quartz-sulphide breccias and stockwork veins hosted in the sedimentary units; precious and base metals bearing veins hosted in the volcanic units; and intermediate to felsic Eocene-aged dykes. All mineralized rock types contain substantial amounts of VG-NE (from fine-grained to coarse-grained gold) and remain open for expansion.
• Metallurgical testing conducted on a composite core sample resulted in metal recoveries of 92.2% for Au, 86.5% for Ag, 94.2% for Pb and 96.9% for Zn achieved through a combination of simple gravity and flotation circuits. The gravity-only recoveries amount to 48.8% Au and 10.3% Ag with a crush size of 327 micrometer (no cyanide leaching required to recover the gold and silver). The metallurgical testing completed to date shows a benign rock composition without deleterious elements (see news release March 1, 2023).
• The consistent continuity, widths and grade of ore mineralization demonstrated by >156,000 meters of drilling in multiple stacked lodes/veins confirms that the 2.01 km² Surebet Discovery continues to demonstrate strong potential to become one of the most significant high-grade gold discoveries in British Columbia’s Golden Triangle in many years.

• The best hole drilled to date from the gold-rich stacked quartz-sulphide breccias and stockwork veins hosted in the sedimentary units is GD-23-157 that assayed 21.08 g/t AuEq (18.95 g/t Au and 95.31 g/t Ag) over 23.00 meters, including 33.75 g/t AuEq (30.39 g/t Au and 150.42 g/t Ag) over 14.00 meters, including 50.27 g/t AuEq (45.27 g/t Au and 225.42 g/t Ag) over 9.00 meters (see news release dated August 15, 2023). More details on the QA/QC protocol can be found in the section titled “QA/QC Protocol” below.
• The best hole drilled to date from the precious and base metals bearing veins hosted in the volcanic units is GD-24-260 from the Golden Gate Zone that assayed 34.52 g/t AuEq (34.47 Au and 3.96 Ag) over 39.00 meters, including 132.93 g/t AuEq (132.78 Au and 12.98 Ag) over 10.00 meters, and 166.04 g/t AuEq (165.84 Au and 16.07 Ag) over 8.00 meters (see news release dated January 13, 2025). More details on the QA/QC protocol can be found in the section titled “QA/QC Protocol” below.
• The best hole drilled to date from the Big Bulk Zone previously reported as the volcanic wedge zone is GD-24-291 that assayed 1.97.52 g/t AuEq (1.92 Au and 1.85 Ag) over 33 meters (see news release dated August 31, 2026). This zone is composed of dense networks of thin mineralized veinlets interpreted to represent distributed fractures filled by mineralized fluids within structural interaction damage zones developed around the Bonanza–Golden Gate junctions. More details on the QA/QC protocol can be found in the section titled “QA/QC Protocol” below.

• The best hole drilled to date from the Eocene-aged dykes is GD-22-58 that assayed 12.03 g/t AuEq (11.84 g/t Au and 15.61 g/t Ag) over 10.00 meters including 19.91 g/t AuEq (19.62 g/t Au and 25.61 g/t Ag) over 6.00 meters, including 23.82 g/t AuEq (23.47 g/t Au and 30.54 g/t Ag) over 5.00 meters, plus a second separate interval down hole of 8.59 g/t AuEq (8.35 g/t Au and 20.74 g/t Ag) over 5.00 meters (see news release dated March 13, 2025). More details on the QA/QC protocol can be found in the section titled “QA/QC Protocol” below.
• A study completed by the Colorado School of Mines confirms a new interpretation of the ore forming process at Surebet and suggests a common magmatic source for the high-grade gold system hosted in three distinct rock types. Until this study, researchers and explorers in the Golden Triangle had not recognized the high-grade gold discovery potential in the Eocene-aged dykes (see news release March 13, 2025), which is showing the potential that these discoveries could be a geological breakthrough in the Golden Triangle of British Columbia.
• Based on positive grassroots exploration and drill results in recent years, Goliath significantly increased its land package from 66,608 hectares to 91,518 hectares (226,146 acres) and now controls 56 kilometers of the Red Line geologic trend providing for additional discovery potential.
• The Golddigger Property is located adjacent to tidewater with a barge route to Prince Rupert (190 km south) and close to existing infrastructure including the town of Kitsault proximal to a permitted mine site on private property.

About Golddigger Property

The Golddigger Property is 100% owned and covers an area of 91,518 hectares in a highly prospective geological setting of the Eskay Rift, within 3 kilometers of the Red Line in the Golden Triangle of British Columbia. This area has hosted some of Canada’s greatest gold mines including Eskay Creek, Premier and Snip. Other significant and well-known deposits in the Golden Triangle include Brucejack, Copper Canyon, Galore Creek, Granduc, KSM, Red Chris, and Schaft Creek. Goliath controls 56 kilometers of the Red Line which is a geologic contact between Triassic age Stuhini rocks and Jurassic age Hazelton rocks used as key markers when exploring for gold-copper-silver mineralization.

The Surebet discovery has shown predictable continuity and good metallurgy with gold recoveries of 92.2% from gravity and flotation at a 327-micrometer crush, including 48.8% recovery of free gold from gravity alone (no cyanide required to recover the gold). The metallurgical testing completed to date shows no presence of deleterious elements (see news release dated March 1, 2023).

The Property is in a well positioned location in close proximity to the communities of Alice Arm and Kitsault where there is a permitted mill site on private property. It is situated adjacent to tide water with direct barge access to Prince Rupert (190 kilometers via the Observatory inlet/Portland inlet). The town of Kitsault is accessible by road (190 kilometers from Terrace, 300 kilometers from Prince Rupert) and has a barge landing, dock, and infrastructure capable of housing at least 300 people, including high-tension power.

Additional infrastructure in the area includes the Dolly Varden Silver Mine Road (only 7 kilometers to the East of the Surebet discovery) with direct road access to Alice Arm barge landing (18 kilometers to the south of the Surebet discovery) and high-tension power (25 kilometers to the east of Surebet discovery). The city of Terrace (population 16,000) provides access to railway, major highways, and airport with supplies (food, fuel, lumber, etc.), while the town of Prince Rupert (population 12,000) is located on the West Coast of British Columbia and houses an international container seaport also with direct access to railway and an airport.

Qualified Person

Mr. Rein Turna P. Geo is the qualified person as defined by National Instrument 43-101, for Goliath Resources Limited projects, and supervised the preparation of, and has reviewed and approved, the technical information in this release. Mr. Turna is an Independent Director of the Company.

About CASERM (Center to Advance the Science of Exploration to Reclamation in Mining)

Goliath Resources is a paying member and active supporter of the Center to Advance the Science of Exploration to Reclamation in Mining (CASERM), which is one of the world’s largest research centers in the mining sector. CASERM is a collaborative research venture between Colorado School of Mines and Virginia Tech that is supported by a consortium of mining and exploration companies, analytical instrumentation and software companies, and federal agencies aiming to transform the way geoscience data is acquired and used across the mining value chain. The center forms part of the I-UCRC program of the National Science Foundation. Research focuses on the integration of diverse geoscience data to improve decision making across the mine life cycle, beginning with the exploration for subsurface resources continuing through mine operation as well as closure and environmental remediation. Over the past three years, Goliath Resources’ membership in CASERM has allowed a high level of research to be performed on the Surebet Discovery.

About Goliath Resources Limited

Goliath Resources is an explorer of precious metals projects in the highly prospective Golden Triangle of Northwestern British Columbia. All of its projects are in high quality geological settings and geopolitical safe jurisdictions amenable to mining in Canada. Goliath is a member and active supporter of CASERM which is an organization that represents a collaborative venture between Colorado School of Mines and Virginia Tech. In 2025, Goliath completed its largest drill program to date for a total of 64,364 meters. It is fully funded for a similar sized drill program in 2026. The Company’s key strategic cornerstone shareholders include Crescat Capital, a Global Commodity Group (Singapore), McEwen Inc. (NYSE: MUX) (TSX: MUX), Waratah Capital Advisors, Rob McEwen, Eric Sprott and Larry Childress.