Galiano Gold Inc. (TSX: GAU) (NYSE: GAU)  announced positive results from a deep step-out drilling program at the Abore deposit, with mineralization intercepted in all four holes across a 1,200 meters strike length. This drilling campaign reinforces Abore’s expansion potential at depth and provides a foundation for future deep drilling programs to further test for mineralization below the boundaries of the current Mineral Reserve and Mineral Resource. Abore is a cornerstone deposit at the Asanko Gold Mine, located in Ghana, West Africa, and is currently being mined by the Company.

Abore Deep Drilling Results

The completed Abore deep step-out drilling program consisted of four holes totalling 1,907m and was designed to test for continuity of mineralization significantly below the current Abore Mineral Reserve and Mineral Resource and to demonstrate the blue-sky potential for future Mineral Resource and Mineral Reserve expansion. The program confirmed the Abore granite and mineralizing system continues 200m below the current Mineral Reserve pit shell over a strike length of at least 1,200m and remains open in all directions. Notably, the system appears to carry grades and widths at these depths sufficient to support the potential development of bulk underground mining.

Highlights of intercepts from the Abore deep drilling program include (all diamond core samples):

• Hole ABDD25-350: 36m @ 2.5 grams per tonne (“g/t”) gold (“Au”) from 370m including 22m @ 3.8 g/t Au
• Hole ABDD25-352: 18m @ 1.9 g/t Au from 415m and 12m @ 1.5 g/t Au from 439m
• Hole ABPC25-356: 16m @ 3.1 g/t Au from 412m and 5m @ 2.3 g/t Au from 433m

“Intersecting mineralized granite in all four deep holes of this program is an important step in advancing our understanding of the blue-sky underground expansion potential at Abore,” stated Matt Badylak, Galiano’s President and CEO. “These results continue to build on the success from our previous drilling campaigns and confirm that the controlling structures and host lithologies that characterize the Abore mineralizing system are present and fertile well below any areas previously drilled to date.”

Abore Infill Drilling Phase 2 Program

Following the positive results of a Phase 1 drilling program reported in Q1 2025, which targeted mineralization within and directly below the Mineral Reserve pit (see press release “Galiano Gold Announces Discovery of New High-Grade Zone at Abore with Intercept of 50m @ 3.2 g/t Au & Results of Infill Drilling Program” dated May 5, 2025), the Company is pleased to announce that a Phase 2 infill drilling program has commenced at Abore. This infill program will continue to test for further extensions of mineralization immediately below the boundaries of Abore’s Mineral Reserve and Mineral Resource.

Background

Abore is located approximately 13 kilometers north of the AGM’s processing plant, directly along the haul road, and has current Measured and Indicated Mineral Resources of 638,000 ounces at 1.24 g/t Au and Inferred Mineral Resources of 78,000 ounces at 1.17 g/t Au, as published in the Company’s most recent Mineral Reserve and Mineral Resource estimates effective December 31, 2024 (see press release “Galiano Gold Announces 2025 Guidance And Provides Mineral Reserve And Mineral Resource Update” dated January 28, 2025).

The Abore deposit sits along the Esaase shear corridor, which also hosts the Esaase deposit, and forms part of the northeast striking Asankrangwa gold belt. The geology of Abore is characterized by a sedimentary sequence composed primarily of siltstones, shales and thickly bedded sandstones that has been intruded by a granite, which lies parallel to the shear and dipping steeply to the northwest. The majority of mineralization is constrained to the granite, hosted in west dipping quartz vein areas developed primarily along the eastern margin of the granite/sediment contact.

Table 1: Abore deep drilling intercepts table^1,2

^Notes:

1. ^{Intervals reported are hole lengths with true width estimated to be 80%-90%
   2. Intervals are not top cut and are calculated with the assumptions of > 0.5 g/t and < 3m of internal waste.}

Qualified Person and QA/QC

Chris Pettman, P. Geo, Vice President Exploration of Galiano, is a Qualified Person as defined by National Instrument 43-101, Standards of Disclosure for Mineral Projects, and has supervised the preparation of the scientific and technical information that forms the basis for this news release. Mr. Pettman is responsible for all aspects of the work, including the Data Verification and Quality Control/Quality Assurance programs and has verified the data disclosed, by reviewing all data and supervising its compilation. There are no known factors that could materially affect the reliability of data collected and verified under his supervision. No quality assurance/quality control issues have been identified to date. Mr. Pettman is not independent of Galiano.

Certified Reference Materials and Blanks are inserted by Galiano into the sample stream at the rate of 1:14 samples. Field duplicates are collected at the rate of 1:30 samples. All samples have been analyzed by Intertek Minerals Ltd. (“Intertek”) in Tarkwa, Ghana with standard preparation methods. A combination of fire assay with atomic absorption finish and photon analyses were undertaken.  Photon assays used 500g samples and fire assays used 50g samples. ChrysosTM Photon assay uses high energy X-ray to activate gold nuclei in a large sample ca. 500g. Photon assay uses a larger sample, thus the variance on the sampling error is less. Crushing the sample to 2-3mm is required in many cases. Photon assay tends to have a higher detection limit than fire assay (0.02ppm). Intertek does its own introduction of QA/QC samples into the sample stream and reports them to Galiano for double checking. Higher grade samples are re-analysed from pulp or reject material or both. Intertek is an international company operating in 100 countries and is independent of Galiano. It provides testing for a wide range of industries including the mining, metals, and oil sectors.

About Galiano Gold Inc.

Galiano is focused on creating a sustainable business capable of value creation for all stakeholders through production, exploration and disciplined deployment of its financial resources. The Company owns and operates the Asanko Gold Mine, which is located in Ghana, West Africa. Galiano is committed to the highest standards for environmental management, social responsibility, and the health and safety of its employees and neighbouring communities.

Figure 1: Abore plan map showing current drilling locations and highlighted intercepts (CNW Group/Galiano Gold Inc.)

Figure 2: Cross Section A-A1 showing hole ABPC25-356 (CNW Group/Galiano Gold Inc.)

Figure 3: Cross Section C-C1 showing hole ABDD25-350 (CNW Group/Galiano Gold Inc.)

Figure 4: Cross Section A-A1 showing hole ABDD25-352 (CNW Group/Galiano Gold Inc.)

Figure 5: Long section through the Abore deposit showing Gram Meter contours of Au intercepts with current intercepts highlighted (CNW Group/Galiano Gold Inc.)