Sanu Gold Reports That Drilling Has Defined a Broad Mineralized Corridor at Its Daina Property in the Siguiri Basin in Guinea

2025-12-11

HIGHLIGHTS

Sanu drilled 17,802m in FY-2025 mainly focused on its highly attractive Daina property.

At the Daina property, 12,896m were completed in FY-2025, with results continuing to reveal significant near-surface and deeper gold mineralized zones extending over multiple kilometres and remaining open

Daina 2 Target: Step out Air Core ("AC") drilling to the south along the identified geophysics trend has expanded the trend to over 4km, with best intercepts including:

16m at 1.81 g/t Au from 44m, including 2m at 12.24 g/t Au from 48m

12m at 1.71 g/t Au from 12m, including 2m at 3.90 g/t Au from 20m

12m at 1.32 g/t Au from 54m, including 4m at 3.02 g/t Au from 62m

6m at 1.26 g/t Au from 36m, including 2m at 3.23 g/t Au

Salat East Target: Reverse Circulation ("RC") drilling and Diamond Drilling ("DD") targeted the down dip extension of the granodiorite hosted structure, with significant intercepts including:21m at 1.02 g/t Au from 17m, including 5m at 1.80 g/t Au & 3m at 1.92 g/t Au

20m at 0.66 g/t Au from 175m, including 1m at 15.41 g/t Au from 281m

Daina 1 South Target: Follow up RC and AC drilling over an extensively interpreted geophysical trend, with best intercepts including:9m at 1.22 g/t Au from 175m, including 1m at 9.56 g/t Au

24m at 0.72 g/t Au from 34m, including 1m at 7.03 g/t Au

10m at 0.83 g/t Au from 46m, including 1m at 1.92 g/t Au

At the Bantabaye property, 601m of DD drilling were completed in FY-2025 on the at Target 2 along soil, auger, and IP results from the southern part of the permit confirming the presence of large structural trends with strong gold anomalies, while high-grade artisanal zones are drill-ready for further testing.

At the Diguifara property, 4,305m of drilling were completed in FY-2025 across Targets 1, 2 and 3 identifying wide mineralized zones which have been intersected along multiple fault-controlled targets, demonstrating a robust and extensive gold system.

Sanu Gold is well funded to continue advancing exploration activities in FY-2026 with a strong continued focus on its Daina property, given its current cash and cash equivalents position of approx. CAD 22 million.

Vancouver, British Columbia--(Newsfile Corp. - December 11, 2025) - Sanu Gold Corporation (CSE: SANU) (OTCQB: SNGCF) ("Sanu Gold" or the "Company") is pleased to announce drill results from its continued exploration program across its three exploration permits located in the prolific gold producing Siguiri Basin of Guinea, West Africa.

Martin Pawlitschek, President and CEO of Sanu Gold commented: "These latest results further confirm the strength and potential scale of the Daina gold system, underscoring its geological similarities to other well-established deposits in the district. The consistent intersections of significant gold mineralization across multiple targets—particularly at Daina 2, Daina 1 South and Salat East—continue to expand the footprint of this emerging mineralized trend. With mineralization remaining open along strike and at depth, and with both shallow oxide and deeper structurally controlled zones now well established, Daina presents an increasingly compelling opportunity for systematic follow-up and infill drilling beginning in Q1-2026.

We are also very encouraged by the ongoing progress at Bantabaye and Diguifara, where recent drilling, sampling and geophysical programs continue to outline broad gold-bearing structures with strong continuity and highly prospective grades. With the Company now fully funded to continue advancing and de-risking its exploration portfolio through FY-2026, we are excited to further explore and unlock the significant potential across our district-scale land package in the Siguiri Basin."

As shown in Table 1 below, the majority of the FY-2025 exploration efforts have focused on the Daina property and were conducted between January and late August. All assays have now been received and are informing the next drilling programme set to begin in early 2026. In the meantime, fieldwork and drilling preparations are currently underway.

At the Daina property, drilling has expanded both near-surface oxide and deeper structurally controlled gold mineralized zones over multiple kilometres, with all key targets remaining open for further growth. At Bantabaye, diamond drilling at Bantabaye 2 Target and continued soil, auger and IP work in the southern portion of the permit are defining broad structural corridors with strong gold anomalies, while high-grade historical workings are advancing toward targeted drill testing. While at Diguifara, drilling across several fault-controlled targets continues to return wide mineralized intervals, confirming a robust and extensive gold system.

Table 1: Sanu Gold Drilling Summary from January to August 2025

TargetHoles (#)Meters (m)

ACRCDDTotalACRCDDTotal

Daina 2 962561274,7362,8451,2858,866

Daina 1 South 11121247201,2183002,238

Salat East29213851,1175901,792

Total Daina property1094691645,5415,1802,17512,896

Diguifara 1 Target1062187768437002,319

Diguifara 2 Target 54110353371200924

Diguifara 3 Target541103574852201,062

Total Diguifara property20144381,4861,6991,1204,305

Bantabaye 2 TargetNilNil33NilNil601601

Total Bantabaye propertyNilNil33NilNil601601

Grand Total 12960162057,02712,8793,89617,802

Given the current cash and cash equivalents position of approximately CAD 22 million, Sanu Gold is well funded to continue advancing exploration activities in FY-2026, with a continued strong focus on the Daina property.

DAINA PROPERTY

Daina is the Company's most advanced property, with ongoing drilling continuing to outline a large, multi-kilometre gold system across several closely spaced targets. Gold mineralization consistently intercepted at shallow depths and within deeper structural zones that remain wide open for expansion. The latest results have further strengthened the continuity of mineralization at Daina 2, Daina 1 South and Salat East, demonstrating well-defined structural controls and highlighting the potential for higher-grade shoots within a broader mineralized corridor. Multiple targets only partially drilled and several additional areas yet to be tested, Daina continues to present considerable upside opportunity as systematic exploration advances. Full set of results for all new drill intercepts are provided in Appendix 1.

As shown in Figure 1, a total 12,896 metres have been drilled at the Daina targets in FY-2025. This work was completed across 164 holes, including 109 AC holes totalling 5,541 metres, 46 RC holes totalling 5,180 metres, and 9 DD holes totalling 2,175 metres. The ongoing drill program remains focused on evaluating the lateral and downdip extensions of the gold-bearing structures previously identified at Daina 2, Daina 1 South, and Salat East.

Figure 1: Daina Keys Targets and drill hole locations

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Daina 2 Main Target

At the Daina 2 Main Target, diamond drilling has extended known mineralization to a vertical depth of approximately 245 metres and provided important geological and structural data to guide future targeting. Mineralized zones ranging from 5 to 50 metres in width now defined along more than 4-kilometres of a north-northwest-trending structure that remains open along strike and at depth, with several untested gaps offering clear opportunities for further expansion. As shown in Figure 2, recent drilling has continued to trace the mineralized trend to the south, confirming the continuity of the Daina 2 structure. Several significant new intercepts were returned, including intervals ending in End-of-Hole ("EOH"), highlighting the potential for additional mineralization at depth.

DAI-AC-130: 16m of 1.81 g/t Au (EOH) from 44m, including: 2m of 12.24 g/t Au from 48m

DAI-AC-116: 12m of 1.71 g/t Au from 12m, including: 2m of 3.9 g/t Au from 20m

DAI-AC-136: 6m of 1.26 g/t Au (EOH) from 36m, including: 2m of 3.23 g/t Au from 38m

DAI-RC-090: 12m of 1.32 g/t Au from 54m, including: 4m of 3.02 g/t Au from 62m

Figure 2: Daina 2 South Zone with new drill results (gold boxes)

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Lithologies consist of sedimentary rocks composed of turbidites sequences of alternating layers of sandstone, siltstone and shale and mineralized zones consisting of a deformed and altered greywacke layer immediately in the hanging wall of the shear zone. Mineralization consists of quartz and quartz-carbonate veinlets, fine disseminated pyrite and rare arsenopyrite. The style of mineralization is typical to what is described from other deposits in the district.

Structural measurements on oriented diamond core demonstrate the main structure controlling the gold mineralization is a north northwest-striking reverse brittle-ductile shear zone, moderately dipping southwest. These measurements are consistent with previous structural interpretations obtained from outcrops and exposed rocks from historical workings. The footwall side of the shear zone is occupied by a sequence of black shale.

Daina 1 South Target

At the Daina 1 South Target, diamond, RC and AC drilling has further tested the southern depth extensions of the Daina Property to a vertical depth of 200 meters with variable widths ranging from 50 meters to 200 meters. The Daina 1 South Target is defined as a 1.3-kilometre north-northwest trending structure which remains open for significant expansion along strike and at depth.

As shown in Figure 3 below, the drill program has followed the strike of the Daina deposit to the south to continue to define the structure, with significant new interceptions shown below:

DAI-DD-004: 9m of 1.22 g/t Au from 175m including: 1m of 9.56 g/t Au from 175m

DAI-AC-092: 24m of 0.72 g/t Au from 34m including: 1m of 7.03 g/t Au from 44m

DAI-RC-089: 50m of 0.31 g/t Au from 28m including: 1m of 1.21 g/t Au from 28m

DAI-AC-093: 22m of 0.40 g/t Au from 18m including: 1m of 1.21 g/t Au from 28m

DAI-AC-094: 10m of 0.83 g/t Au from 46m, including: 1m of 1.92 g/t Au from 52m

The gold structure at the Daina 1 South Target forms multiple parallel mineralized structures, partly exposed in large and active historical workings. Oriented diamond core shows the gold structures are hosted in a hydrothermally altered greywacke unit. Structural measurements revealed multiple northwest-striking moderately northeast-dipping brittle-ductile sheared zone systems at the contact between the greywacke in the hanging wall of the fault and a high chargeability graphitic siltstone layer in the footwall. The host greywacke is crosscut by a system of steeply dipping and highly mineralized quartz carbonate veins and stockworks that host the gold mineralization.

Figure 3: Daina 1 South Target, new drill hole locations and new drill results (gold boxes)

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Salat East Target

At the Salat East Target, diamond drilling tested a 500-meter segment of north-northeast striking, gold-bearing structures hosted in a hydrothermally altered and sheared granodiorite. Mineralized zones have been identified from surface to a depth of at least 150 meters with widths varying between 50 meters to 100 meters, remaining open along strike and at depth, and near one of AngloGold Ashanti's mining permit.

The intrusive at the Salat East Target is cut by a north northeast-striking and moderately northwest dipping gold-bearing shear. The host granodiorite is extensively sheared and hydrothermally altered; it is associated with a zone of elevated chargeability and resistivity and coincides with a well-defined line of surface artisanal workings. Gold mineralization at the Salat East Target is controlled by a network of steeply dipping cm-scale and closely spaced quartz carbonate veins and veinlets associated with disseminated pyrite and fine-grained arsenopyrites within the altered and sheared granodiorites.

As shown in Figure 4 below, new drilling results have followed the strike of the Salat structure, with significant new intercepts shown below:

DAI-RC-095: 21m of 1.02 g/t Au from 17m, including: 5m of 1.80 g/t Au from 20m, 3m of 1.92 g/t Au from 29m

DAI-DD-005: 20m of 0.66 g/t Au from 175m, including: 1m of 1.18 g/t Au from 181m, 1m of 1.42 g/t Au from 186m, 1m of 1.56 g/t Au from 190m, 1m of 1.87 g/t Au from 194m, and 1m of 15.41 g/t Au from 281m

Figure 4: Salat East Target drill hole locations and latest results over chargeability image

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Daina Next Steps

Follow-up work has already begun at Daina to refine targets ahead of the 2026 drill program, which is set to resume in Q1-2026, and expected to focus on expanding the extensive shallow and deeper gold zones discovered to date:

At Daina 2 Target, infill AC and RC drilling is planned on the remaining gaps of the defined structure.

At Salat East Target, an IP Survey is planned to follow the identified strike to the northwest where it remains open, followed by further RC and AC drilling

At Daina 1 Target, an IP Survey is planned over the 9km gap between Daina 1 South and Daina 1 North followed by further RC and AC drilling

A program of additional target definition consisting of IP survey lines and auger sampling lines followed by AC and RC drill lines is planned for a series of surface gold anomalies that so far remain untested.

BANTABAYE PROPERTY

At the Bantabaye property encouraging drill results are emerging from both the northern and southern parts of the permit. At the Bantabaye 2 Target in the north, oriented diamond drilling has confirmed that the gold-bearing structure extends to depth and remains open, adding confidence that the system has meaningful scale potential, given its 4-kilometre overall strike length that has so far only been partially drill tested. In the south, a combination of soil and auger sampling, rock-chip results from active artisanal workings, and 93 kilometres of IP geophysics have outlined multiple well-structured gold anomalies extending over more than 8 kilometres of strike, defining new high-priority drill targets. Full set of results for all new drill intercepts are provided in Appendix 1.

Bantabaye 2 Target

At the Bantabaye 2 Target, the drill program prioritized depth extensions of previously intercepted near surface gold mineralization. A total of 601 meters has been drilled on the Bantabaye 2 Target in FY-2025, completed across three DD holes. As shown in Figure 5 below, new drilling results continue to define the depth of the structure, with significant new intercepts shown below:

BANT-DD-001: 4m of 3.00 g/t Au from 169m, including: 1m of 8.12 g/t Au from 170m

BANT-DD-003: 14m of 0.87 g/t Au from 62m, including: 4m of 2.39 g/t Au from 64m

Figure 5: Bantabaye 2 Target new drill hole locations and new drill results (gold boxes)

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As shown in Figure 6 below, new drilling results have confirmed high-grade extensions of mineralization at Bantabaye at depths of 300m.

Figure 6: Bantabaye 2 Target cross section

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Bantabaye South Target

At Bantabaye South, a target definition exploration was undertaken in FY-2025 utilizing an array of exploration techniques including induced IP survey, soil sampling, infill termite mound and auger drilling campaigns to plan drilling for Q1-2026.

IP Survey

A ground geophysical survey was completed at the Bantabaye South area, covering Target 9 and Target 10 and consisting of 93 kilometres of IP survey.

The objective of the ground geophysical survey program was the mapping of geophysical features, including chargeability and resistivity, to identify bedrock structures that display potential associations with bedrock gold mineralization to inform follow up drill testing. Most of the southern part of the Bantabaye permit is covered by thick laterite plateaus lacking any outcrop of the bedrock, requiring the use of geophysical survey methods to inform exploration. The IP survey consisted of 36 east-west oriented and 200m spaced lines that varied from 1,250m to 3,000m in length, as shown in Figure 7 below.

Figure 7: Bantabaye South Target gold in soil anomalies

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The IP data was collected, processed, and interpreted by SAGAX Afrique of Ouagadougou, Burkina Faso, using the standard induced polarization resistivity method. Interpretation of the IP survey results indicates the presence of strong resistivity, chargeability and conductivity lineaments parallel to known geology and structures. Structural interpretation of geophysics features defines structures parallel to the termite mound and auger gold geochemistry trends that will be followed up with future drill testing.

Termite Mound and Soil Sampling

In parallel to the IP survey and infill termite mound and soil sampling program, was conducted, at Bantabaye South totalling 911 samples on a 50 meter by 100-meter grid pattern, with 21 samples returning values between 0.1 g/t and 1.4 g/t Au, as shown on Figure 7 above.

The results of the soil sampling program better define the high-priority anomalies previously outlined by surface sampling, auger, and IP survey, highlighting prominent and well-structured northwest trending gold anomalies along a north trending corridor, interpreted to represent the Bantabaye thrust fault system, with the gold mineralization trends mapped over a 10-kilometre strike length. High-grade gold samples were obtained from rock chip sampling in extensive and active artisanal mining zone at Target 10 including 48.2 g/t, 7.58 g/t and 5 g/t Au.

Auger Drilling

An auger drill program was conducted on Bantabaye South, designed to sample the weathered bedrock below the surface gold anomalies at Targets 9 and 10, to then aid with the design of an RC drill testing program. A total of 220 auger holes totalling 3,552 meters were completed in FY-2025.

Assay results from the program confirm gold lineaments previously interpreted from termite mound anomalies at Target 9 and Target 10. Significant gold-in-auger anomalies with broad widths of anomalous gold results in the weathered bedrock and in the very thick (20-30m) laterite cap, were defined with this program. The auger defined gold trends are located within the surface gold anomalies and align with the interpreted structural trends, and in some places coincide with the trends of the artisanal mining areas.

Bantabaye Next Steps

At Bantabaye, newly defined, high-priority targets on the southern structures will undergo their first drill test in Q1-2026, following up on high-priority areas targeted through soil anomalies and artisanal workings:

At Bantabaye South, RC and AC drill testing is planned on Targets 9 and 10 to follow up on the strong geochemical and geophysical results interpreted thus far while additional IP lines will be completed on the existing grid

At Bantabaye North, an auger sampling campaign is planned to begin in Q1-2026 to further refine the interpretation of gold trends along the main Bantabaye thrust to inform a further RC and DD programme for later in the year

DIGUIFARA PROPERTY

The drilling completed during 2025 at Diguifara continues to demonstrate the presence of a broad and persistent gold system across multiple parallel structures that extend for hundreds of metres along strike. Drilling has outlined wide zones of gold mineralization from surface and at depth at three separate targets, indicating strong scale potential within this emerging structural corridor. With the mineralized trends remaining open in all directions and only sparsely drilled to date, follow-up work is focused on identifying higher-grade zones and expanding the overall footprint of the system. Diguifara represents an attractive pipeline opportunity within Sanu Gold's project portfolio, with substantial upside remaining as exploration advances. Full set of results for all new drill intercepts are provided in Appendix 1.