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Galiano GOLD Announces Discovery of New High-Grade Zone at Abore

Drill Results

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

Vancouver, British Columbia, May 5, 2025 – Galiano Gold Inc. (“Galiano” or the “Company”) (TSX, NYSE

American: GAU) is pleased to provide an update on the 2025 drilling results at the Abore deposit,

following the completion of a planned infill programme. Abore is one of the cornerstone deposits at the

Asanko Gold Mine (“AGM”), located in Ghana, West Africa, and is currently being mined by the Company.

Highlights of the infill programme include the discovery of a new high-grade zone immediately below the

designed Mineral Reserve pit shell at the Abore Main pit and multiple high-grade intercepts surrounding

the known Abore South pit high-grade zone.

The 2025 Abore infill drilling programme, consisting of 26 holes totalling 5,543 metres (“m”), had primary

objectives to:

 increase confidence in the existing Mineral Reserve model, focusing on areas throughout the

known high-grade zone at Abore South; and

 test for continuations of mineralization below the existing Mineral Reserve pit shell design.

A newly discovered zone of high-grade mineralization, highlighted by hole ABPC25-346: 50m @ 3.2

grams per tonne (“g/t”) gold (“Au”) from 100m, was intercepted immediately below the current Mineral

Reserve pit design at the southern end of the Abore Main pit. This result provides exciting new targets,

along with critical geological and structural information, to guide future drilling aimed at proving further

continuations of mineralization at depth.

Drilling in and around the Abore South pit high-grade zone yielded multiple high-grade intervals matching

or exceeding the predictions of the Mineral Resource model. These results strengthen confidence in this

key portion of the Mineral Reserve, which hosts some of the highest-grade material throughout all of the

AGM’s tenements. The drilling program examined areas both within the existing Mineral Reserve pit

design and directly beneath it, confirming that mineralization continues uninterrupted and extends

beyond the current Mineral Reserve boundaries at Abore South.

Highlights of intercepts at Abore South include (all diamond core samples):

 Hole ABPC25-315: 34 meters @ 12.0 g/t Au from 192m and 11 meters @ 7.2 g/t Au from 239m

 Hole ABPC25-316: 27 meters @ 6.7 g/t Au from 183m

 Hole ABPC25-317: 41 meters @ 3.0 g/t Au from 202m

 Hole ABPC25-324: 27 meters @ 2.9 g/t Au from 232m

 Hole ABPC25-325: 38 metres @ 6.7 g/t Au from 195m

 Hole ABPC25-328: 29 meters @ 3.8 g/t Au from 232m

 Hole ABPC25-329: 23 meters @ 3.1 g/t Au from 120m

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High-grade zones throughout the Abore deposit, including this newly discovered zone, display consistent

characteristics, with mineralization hosted primarily within the Abore granite, characterized by significant

hydrothermal alteration along with high density quartz veining, intense localized brecciation,

disseminated arsenopyrite and visible gold.

"The identification of a new high-grade zone beneath Abore Main and the extensions that have grown the

Abore South high-grade zone from 90 meters to 180 meters long, underscore the substantial growth

potential at Abore," said Chris Pettman, Galiano's Vice President of Exploration. "Mineralization remains

open at depth throughout the entire 1,600m strike length, with these latest findings suggesting the Abore

mineralizing system may be considerably more extensive than previously understood.”

Matt Badylak, Galiano’s President and CEO stated, “These results at Abore validate the robust

mineralization within our current open pit reserve, while demonstrating strong potential for transitioning

to a higher-grade underground operation through ongoing exploration along strike and at depth.

Establishing our first underground resource at the AGM is a strategic priority for 2025. These latest

findings position Abore, alongside Nkran, as promising targets for underground mine life extension and a

potential source of high-grade mill feed in the future.”

Background

Abore is located approximately 13 kilometres north of the AGM’s processing plant, directly along the haul

road, and has current Measured and Indicated Resources of 638,000 ounces @ 1.24 g/t Au and Inferred

Resources of 78,000 ounces @ 1.17 g/t Au, as published in the Company’s most recent Mineral Reserve

and Mineral Resource update 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 arrays

developed primarily along the western margin of the granite/sediment contact.

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Figure 1: Plan map showing 2025 drill traces and highlighted intercepts from 2025 drilling at the Abore deposit.

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Figure 2: Zoomed in plan map of Abore South pit showing collar locations and highlighted intercepts from 2025

drilling and new extent of South Pit high-grade zone.

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Figure 3: Cross section B-B1 showing current Abore Mineral Resource block model and newly discovered high-grade

zone below the current Mineral Reserve pit design in hole ABPC25-346 at the south end of Abore Main pit.

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Figure 4: Cross section C-C1 showing high grade intercepts below the Mineral Reserve pit design demonstrating the

northern extension of the known high-grade zone at Abore South pit in holes ABPC25-316 and ABPC25-328.

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Figure 5: Cross section D-D1 showing high grade extension in hole ABPC25-324 below the Mineral Reserve pit

design at the known Abore South high-grade zone.

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Figure 6: Cross section E-E1 showing infill hole ABPC25-314 drilled within the known high-grade zone at Abore

South pit showing continuation of high grades seen here off section.