A2GOLD ANNOUNCES HIGH-GRADE GOLD AND SILVER SURFACE CHANNEL RESULTS FROM BLACKROCK TARGET

CORE DRILLING ONGOING AT CASTLE ZONE (EASTSIDE)

TONOPAH, NEV., June 3, 2026 /PRNewswire/ - A2Gold Corp. ("A2Gold" or the "Company") (TSXV: AUAU) (OTCQX: AUXXF) (FRA: RR7) is pleased to announce gold and silver assay results from a recent surface channel sampling program completed at the Blackrock Target, located within the Castle Zone at the southern end of the Company's district-scale Eastside Gold-Silver Project in Esmeralda County, Nevada, within the Walker Lane Trend.

The results confirm the presence of high-grade gold and silver mineralization exposed at surface and further support the Company's interpretation that the Blackrock Target may represent a higher-grade epithermal vein system within the broader Castle Zone. Importantly, the mineralized veins identified at Blackrock are hosted in Paleozoic basement rocks, which represents a potentially important exploration opportunity in addition to the volcanic-hosted mineralization historically drilled at Castle.

Highlights

• Surface channel sampling returned assays of up to 10.5 g/t gold and 74.7 g/t silver, confirming high-grade precious metals mineralization at surface.
• The Blackrock Target is located within the Castle Zone, at the southern end of Eastside's land position, and represents an additional high-priority target area within the broader Eastside district.
• The program identified classic epithermal quartz vein textures, including banded to massive quartz veins and quartz-after-calcite blade replacement textures, which are commonly associated with productive low-sulfidation epithermal systems.
• Historical drilling at Castle primarily focused on broad zones of volcanic-hosted gold-silver mineralization. The Blackrock results suggest potential for an additional style of mineralization associated with deeper, basement-hosted vein structures.
• The Company's ongoing core drilling program is designed to evaluate both the known volcanic-hosted mineralization at Castle and the potential for higher-grade basement-hosted vein targets.

Peter Gianulis, CEO of A2Gold, commented: "The Blackrock sampling results are highly encouraging because they show high-grade gold and silver mineralization right at surface within the Castle Zone, including results of up to 10.5 g/t gold and 74.7 g/t silver. These results reinforce our view that Eastside is not simply a large gold-silver system, but a district with multiple opportunities to identify higher-grade zones within its broader mineralized footprint.

Importantly, Blackrock fits directly into the evolution of our exploration strategy at Eastside. While Eastside already hosts a significant resource base, our current focus is increasingly aimed at identifying and drilling the higher-grade feeder structures that may have driven mineralization throughout the system. Blackrock is an important example of that opportunity and gives us another compelling target within the Castle Zone. With drilling ongoing at Castle and additional targets being advanced across the district, we believe Eastside has the potential to grow not only in size, but also in quality as we continue to refine and test these higher-grade targets."

Table 1: Channel Sample Gold and Silver Assay Results
The highest-grade gold result was returned from sample 1871515, which assayed 10.50 g/t Au and 33.6 g/t Ag from a banded quartz vein hosted in Paleozoic basement rock. Additional high-grade precious metal values include sample 1871516, which returned 5.63 g/t Au and 68.7 g/t Ag, and sample 1871510, which returned 0.59 g/t Au and 74.6 g/t Ag. These results support the Company's interpretation that Blackrock may represent a higher-grade epithermal vein target within the broader Castle mineralized system.

Geological Significance
The Blackrock Target is characterized by exposed quartz veins hosted within Paleozoic basement rocks. The veins display textures commonly associated with low-sulfidation epithermal systems, including banded quartz, massive quartz, and quartz pseudomorphs after calcite blades. These textures may indicate favorable conditions for precious metals deposition and support the Company's interpretation that Blackrock could represent a structurally controlled, basement-hosted vein target within the broader Castle mineralized system.

Previous exploration within the Castle Zone has largely focused on broad zones of disseminated gold and silver mineralization hosted within volcanic rocks. The identification of basement-hosted vein mineralization at Blackrock provides an additional exploration opportunity and may help define higher-grade feeder structures within the larger Eastside system. The Company's ongoing 7-hole, 2,500 metre diamond core drilling program is designed to evaluate the extent, continuity and depth potential of these newly identified targets.

The current inferred Castle Zone resource (see Table 2 and footnote below) does not include any resource from the Blackrock Target nor does it include any silver resources.  The current inferred resource estimates 314,000 ounces of gold at an average grade of 0.49 g/t Au.

Table 2: Entire Castle Project Inferred Gold Resources

Quality Assurance / Quality Control
A2Gold follows strict QA/QC protocols on all exploration programs. The surface sampling program included the insertion of certified reference standards, blanks and duplicate samples. Samples were submitted to American Assay Laboratories in Reno, Nevada, an ISO 17025-certified analytical facility. Gold analyses were completed using a 30-gram fire assay method, while multi-element analyses were conducted using ICP-OES techniques.

Channel and surface rock samples are selective in nature and may not be representative of the grade or style of mineralization present across the target area. There can be no assurance that results from surface sampling will be indicative of mineralization encountered through drilling.

The sampling program was completed by the A2Gold geological team under the supervision of John Marma, Vice President of Exploration and the Company's Qualified Person under National Instrument 43-101.

Qualified Person
John Marma, CPG, a Certified Professional Geologist with the American Institute of Professional Geologists and a Qualified Person as defined by National Instrument 43-101, has reviewed and approved the scientific and technical information contained in this news release.

About A2Gold Corp
A2Gold Corp. owns three highly prospective gold projects in the United States all of which are in the mining-friendly jurisdiction of Nevada. A2Gold's flagship, district-scale Eastside Gold-Silver Project hosts a large and expanding gold and silver resource and is in an area of excellent infrastructure.

On Behalf of the Board
Peter Gianulis, CEO

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Certain statements and information contained in this press release constitute "forward-looking statements" within the meaning of applicable U.S. securities laws and "forward-looking information" within the meaning of applicable Canadian securities laws, which are referred to collectively as "forward-looking statements". The United States Private Securities Litigation Reform Act of 1995 provides a "safe harbor" for certain forward-looking statements. A2Gold Corp.'s ("A2Gold") exploration plans for its gold exploration properties, the drill program at A2Gold's Eastside project, the preparation and publication of an updated resource estimate in respect of the Original Zone at the Eastside project, A2Gold's future exploration and development plans, including anticipated costs and timing thereof; A2Gold's plans for growth through exploration activities, acquisitions or otherwise; and expectations regarding future maintenance and capital expenditures, and working capital requirements. Forward-looking statements are statements and information regarding possible events, conditions or results of operations that are based upon assumptions about future economic conditions and courses of action. All statements and information other than statements of historical fact may be forward-looking statements. In some cases, forward-looking statements can be identified by the use of words such as "seek", "expect", "anticipate", "budget", "plan", "estimate", "continue", "forecast", "intend", "believe", "predict", "potential", "target", "may", "could", "would", "might", "will" and similar words or phrases (including negative variations) suggesting future outcomes or statements regarding an outlook. Such forward-looking statements are based on a number of material factors and assumptions and involve known and unknown risks, uncertainties and other factors which may cause actual results, performance or achievements, or industry results, to differ materially from those anticipated in such forward-looking information. You are cautioned not to place undue reliance on forward-looking statements contained in this press release. Some of the known risks and other factors which could cause actual results to differ materially from those expressed in the forward-looking statements are described in the sections entitled "Risk Factors" in A2Gold's Listing Application, dated January 24, 2018, as filed with the TSX Venture Exchange and available on SEDAR under A2Gold's profile at www.sedar.com. Actual results and future events could differ materially from those anticipated in such statements. A2Gold undertakes no obligation to update or revise any forward-looking statements included in this press release if these beliefs, estimates and opinions or other circumstances should change, except as otherwise required by applicable law.

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SOURCE A2 Gold Corp