Orezone Reports Positive Drill Results at Bomboré Demonstrating Growth Potential Ahead of Mineral Resource and Reserve Update in Q1 2027
OREZONE GOLD CORPORATION
450-505 Burrard Street
Vancouver, BC, V7X 1M3
T: 778-945-8977
Orezone Reports Positive Drill Results at Bomboré Demonstrating Growth Potential Ahead of
Mineral Resource and Reserve Update in Q1 2027
August 11, 2026 – Vancouver, BC - Orezone Gold Corporation (TSX: ORE | ASX: ORE | OTCQX: ORZCF)
(the “Company” or “Orezone”) is pleased to provide additional drill results from its Bomboré Gold Mine.
The latest results are from multiple zones across the 14-kilometre-long reserve-defined Bomboré gold
system.
Selected Drill Highlights1:
• 2.97g/t over 34.0m (BBD1393) • 1.74g/t over 26.0m (BBD1437)
Incl. 4.50g/t over 7.0m Incl. 3.33g/t over 6.0m
• 4.00g/t over 11.3m (BBD1409) • 8.34g/t over 6.0m (BBD1418)
• 1.26g/t over 34.0m (BBD1430) • 1.39g/t over 19.0m (BBD1408)
Incl. 5.46g/t over 2.0m Incl. 4.97g/t over 3.0m
• 4.28g/t over 11.0m (BBD1393) • 223.25g/t over 1.0m (BBD1437)
• 9.14g/t over 3.30m (BBD1411) • 4.88g/t over 4.60m (BBD1414)
• 1.64g/t over 15.0m (BBD1394) • 1.81g/t over 13.0m (BBD1392)
• 1.28g/t over 16.6m (BBD1402) • 1.70g/t over 12.0m (BBD1430)
Patrick Downey, President and CEO, commented “These latest exploration drill results continue to
demonstrate the growth potential at Bomboré , confirming the continuity of gold mineralization beyond
the current Mineral Resources and Mineral Reserves.
Step-out drilling continues to highlight significant exploration upside along strike, demonstrated by follow-
up drilling at P16, that confirmed the zone’s 600 metre strike extension and its overall sub -parallel
orientation to the P17 high-grade trend. As with P17, the emerging P16 trend hosts notably higher-grade
zones within a broader envelope of lower grade mineralization. Ongoing structural studies and future
exploration drilling will focus on refining the controls and continuity of these higher -grade zones, which
are potentially amenable to underground mining and could significantly enhance the production profile.
In addition to our successful expansion drilling programs, the 2026 resource definition program focused
on converting Inferred Resource to the Indicated category, supporting a Mineral Resource and Mineral
Reserve update which is expected to be released in the first quarter of 2027. The updated estimate will
incorporate the results of approximately 100,000m of additional drilling, in addition to an adjusted cut-off
grade reflective of current operating costs and higher gold prices. Given Orezone’s ongoing exploration
success in extending mineralization to depth and along strike, we expect that the new estimate will yield
a material increase to both Mineral Resources and Mineral Reserves, further extending the overall life-of-
mine at Bomboré”.
1. Results are from multiple zones, are uncapped, and have variable true widths. See Section 2 of release for per zone estimated true widths.
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Exploration Drilling Results
Follow-up drilling at P16 was successful in confirming the P16 strike extension, which has now been traced
over 600 metres to the northeast of the established P16 Mineral Resource. This newly emerging trend is
subparallel to the established P17 Trend, located approximately 1 kilometre to the southeast. As with the
P17 Trend, P16 hosts notably higher-grade zones, with mineralization plunging at 25 degrees to the north-
northeast, parallel to the axes of tight folds in quartz veins. Follow-up drilling at P16 will look to both
delineate mineralization along the broader trend, as well as to further refine the continuity of the higher-
grade zones with increasingly tighter drill spacing.
The P16 strike extension is a significant discovery that has broader implications in terms of future resource
growth within the Bomboré gold system. P16 strike extension was not previously recognized as a
prospective target because of the approximately eight metres of Tertiary cover that masks the underlying
mineralization. This recent finding opens up multiple areas under cover that were not previously advanced
due to the absence of surficial geochemical anomalies.
P16 selected intercepts – 600 metres northeast of established P16 resource:
8.34g/t over 6.0m (BBD1418) 4.88g/t over 4.6m (BBD1414)
27.31g/t over 1.0m (BBD1405) 2.83g/t over 6.0m (BBD1405)
4.37g/t over 2.4m (BBD1422) 12.50g/t over 1.0m (BBC7353)
Previously reported – selected high-grade intercepts from P16 area:
10.63g/t over 14.0m (BBD0448) 16.50g/t over 5.0m (BBD0448)
9.03g/t over 12.0m (BBC3241) 6.69g/t over 15.5m (BBD0443)
5.91g/t over 15.0m (BBD0477) 7.82g/t over 9.0m (BBD0213)
58.91g/t over 3.0m (BBD0768) 25.87g/t over 1.0m (BBD0813)
Resource Definition Drill Results
For 2026 , Orezone has budgeted approximately 65,000m of drilling at Bomboré, with 45,000 metres
dedicated to resource definition drilling. The definition program follows more recent 100 metre-spaced
step-out drilling, which was successful in extending gold mineralization below several of the current life-
of-mine resource pits. Targeted infill drilling is expected to expand the existing resource base, with future
pit optimizations potentially extending pit boundaries further down depth and along strike.
Further to the planned 2026 step-out and resource definition drill programs, mineralization at Bomboré
remains open at depth and along strike. To date, the broader mineralized system has been traced across
a continuous 14-kilometre strike length, with Mineral Reserves to an average depth of less than 40 metres
and Mineral R esources to an average depth of approximately 70 metres. Future definition drilling at
Bomboré will be focused on delineating higher-grade centers of mineralization, with the potential to be
sequenced into the near -term mine plan, supporting further growth in production and operating cash
flow.
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North Zone selected intercepts:
2.97g/t over 34.0m (BBD1393) 1.64g/t over 15.0m (BBD1394)
Incl. 4.50g/t over 7.0m Incl. 2.31g/t over 4.0m
4.28g/t over 11.0m (BBD1393) 1.06g/t over 31.2m (BBD1394)
1.81g/t over 13.0m (BBD1392) Incl. 2.62g/t over 4.0m
1.05g/t over 12.4m (BBD1395) 3.27g/t over 5.0m (BBC7295)
P17 selected intercepts:
1.26g/t over 34.0m (BBD1430) 1.39g/t over 19.0m (BBD1408)
Incl. 5.46g/t over 2.0m Incl. 4.97g/t over 3.0m
4.00g/t over 11.3m (BBD1409) 9.14g/t over 3.3m (BBD1411)
1.70g/t over 12.0m (BBD1430) 4.92g/t over 3.0m (BBD1429)
Siga selected intercepts:
1.74g/t over 26.0m (BBD1437) 1.08g/t over 27.2m (BBD1438)
Incl. 3.33g/t over 6.0m Incl. 1.60g/t over 13.0m
223.25g/t over 1.0m (BBD1437) 2.96g/t over 7.0m (BBD1440)
1.09g/t over 13.4m (BBD1439)
P8P9 selected intercepts:
1.28g/t over 16.6m (BBD1402) 1.09g/t over 11.30m (BBD1401)
Incl. 3.01g/t over 3.0m 2.07g/t over 7.0m (BBC7341)
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Figure 1 – Bomboré Plan Map Highlighting Selected Intercepts
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Figure 2 – North Zone Long Section
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Figure 3 – North Zone Cross Section
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Figure 4 – Siga South Cross Section
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Figure 5 – P16 Long Section