File: Attachment 2025-08-19_ORE_bombore_drill_results_final.pdf

OREZONE GOLD CORPORATION

450-505 Burrard Street Vancouver, BC, V7X 1M3

T: 778-945-8977 info@orezone.com

OREZONE INTERCEPTS FURTHER HIGH-GRADE MINERALIZATION BELOW LIFE OF MINE PITS INCLUDING 1.59 G/T GOLD OVER 48.00M AND 1.09 G/T GOLD OVER 45.00M

August 19, 2025 Vancouver, BC - Orezone Gold Corporation (TSX: ORE | ASX: ORE | OTCQX: ORZCF) (the "Company" or "Orezone") is pleased to provide additional drill results from its ongoing multi-year exploration campaign at its flagship Bombore Gold Mine. The latest results are from the North and P8P9 zones, targeting the down plunge continuity of higher-grade sub-zones beneath the current life of mine pits.

Selected Drill Highlights1: dot 1.59g/t Au over 48.00m, including 4.86g/t Au over 9.00m (BBD1358)

dot 1.09g/t Au over 45.00m, including 2.56g/t Au over 8.00m (BBD1370), within a broader mineralized intercept of 0.64g/t Au over 157.00m2

dot 1.97g/t Au over 16.10m, including 2.74g/t Au over 10.10m (BPC7217)

dot 2.01g/t Au over 14.00m (BPC7216)

dot 2.67g/t Au over 7.40m (BBD1367)

dot 1.63g/t Au over 11.00m (BPC7216)

dot 1.48g/t Au over 8.75m (BBD1369)

dot 1.82g/t Au over 6.40m (BPC7210)

dot 1.16g/t Au over 9.00m (BBD1369)

dot 1.47g/t Au over 6.50m (BBD1368)

dot 1.01g/t Au over 9.00m (BPC7217)

Patrick Downey, President and CEO stated, "These latest drill results confirm the down plunge continuity of multiple higher-grade sub-zones, with mineralized traces extending beneath the current resource pits, and remaining open at depth. The targeted drilling at the North and P8P9 zones further underscores the near-term potential at Bombore to selectively pull higher-grade reserve pits to depth across the greater 14km long reserve defined trend. Of particular significance is the very broad sub-zone of mineralization at depth in P8P9. This zone does not appear at surface and is the broadest zone of continuous mineralization that has been intercepted at Bombore, demonstrating significant exploration potential.

1. Please see Table 1 for estimated true widths. 2. Composite includes below cut-off dilution.

- 1 - The results of this concentrated drilling serve to complement the ongoing wider spaced step-out drill program, which is focused on identifying new higher-grade centers of mineralization both at depth and near-surface along strike.

In H1-2025, approximately 30,000m of exploration drilling was completed at Bombore. We are extremely pleased with the results and success of the program to date, which includes 1) extending North Zone footwall mineralization up to 200m below the current reserve pits along an 800m strike length (including 2.55g/t Au over 23.00m and 1.14g/t Au over 29.50m), 2) extending mineralization of the P17S high-grade sub-zone a further 300m down plunge (7.40g/t Au over 6.70m) and 3) identifying multiple broad near surface strike extensions (including 2.22g/t Au over 14.00m, 1.12g/t Au over 10.00m and 0.92g/t Au over 14.35m).3

Drilling will continue in H2-2025 on multiple fronts in support of the Company's long-term goal of increasing Bombore's current stated global resource from 5 million ounces4 to a targeted 7 to 10 million ounces longer term.5 This is truly an exciting prospect with the ongoing hard rock expansions positioned to increase Bombore's overall production to 220,000-250,000 ounces per annum.6"

North & North Hill Zone

The ongoing drilling program continues to define and expand mineralized trends along the 3km strike length of the North Zone. Mineralization in the shear-hosted "Footwall Zone" is associated with rheological and chemical differences between siltstones and shales and the volcaniclastic footwall sediments. Gold grades are correlated with quartz veinlets with disseminated pyrite and arsenopyrite as accessory minerals. Ore shoots are developed where north-northeast trending steep-dipping shears intersect the northeast trending and easterly dipping footwall shear. Fold hinge and stretching lineation measurements confirm the moderate north to north-northeast plunging mineralization.

The North Hill Zone, which sits east of the Footwall Zone, continues to deliver promising grades and widths with higher grades corresponding to increased extensional quartz veining. These veins occur between two steep-dipping north-northeast trending mineralized deformation zones suggesting on-going deformation has resulted in sites of dilation orthogonal to the steeper shears.

The recent drilling was successful in confirming 1) the down plunge continuity of the higher-grade North Hill sub-zone beneath the life of mine reserve pit (including intercepts of 1.59g/t Au over 48.00m and 1.97g/t Au over 16.10m), and 2) further delineating higher-grade mineralization within the west dipping footwall shear (2.01g/t Au over 14.00m). Both of these higher-grade trends remain open to depth, and will be the focus of future follow-up drilling.

3. The drill results were previously disclosed in the Company's press releases dated June 10, 2025 and January 26, 2025. See also Table 2. 4. Refer to the Company's prospectus dated and lodged with ASIC on July 11, 2025 (the "ASX Prospectus"), a copy of which is available on the Company's website for the Company's Mineral Resource Estimate: 27,530kt at 0.78g/t Au for 692koz Au Measured Mineral Resources, 151,735kt at 0.78g/t Au for 3,814koz Au Indicated Mineral Resources and 20,015kt at 0.95g/t Au for 610koz Inferred Mineral Resources. The Company confirms it is not aware of any new information or data that materially affects the information included in the Prospectus and that all material assumptions and technical parameters unde rpinning the mineral resources in the Prospectus continue to apply and have not materially changed. 5. This statement of the Company's goal of increasing the current stated 5 million global resource base to a targeted 7 to 10 million ounces longer term is an aspirational statement, and the Company does not yet have reasonable grounds to believe the statement can be achieved. 6. Refer to the ASX Prospectus. The Company confirms it is not aware of any new information or data that materially affects the information included in the ASX Prospectus and that all material assumptions and technical parameters underpinning the forecasted gold production targets in the Prospectus continue to apply and have not materially changed.

- 2 - North Hill Zone: selected high-grade sub-zone intercepts (previously reported7): dot 5.35g/t Au over 21.00m (BBD1220) dot 3.14 g/t Au over 18.00m (BBD1285) dot 3.30g/t Au over 20.00m (BBD1219) dot 2.55 g/t Au over 23.00m (BBD1324)

P8P9 Zone The north-northeast trending P8P9 Zone is separated from the North Zone by an ephemeral drainage channel. Mineralization is defined over a 1.6km strike length with a width of 1.4km at its widest point. Discrete north-northeast higher-grade lenses occur within wide low-grade pyrite rich zones dipping steeply to the east. Similar to North Hill, zones of flatter lying extensional quartz veining are also present. Mineralization intersected in holes BBD1368, BBD1369 and BBD1370 demonstrate the potential for wide zones of mineralization with no significant expression near surface. Mineralization is hosted within a granodiorite unit with abundant disseminated pyrite with above background gold levels throughout. Of note is hole BBD1370 which returned 1.09g/t Au over 45.00m, within one of the widest mineralized intercepts on the property to date of 0.64g/t Au over 157.00m8. Overall, this step-out drilling at P8P9 was successful in extending this zone of higher-grade mineralization by a further 100m down plunge. P8P9 Zone: selected high-grade sub-zone intercepts (previously reported9): dot 2.04g/t Au over 35.00m (BBD0483) dot 1.95g/t Au over 45.00m (BBD0522) dot 1.72g/t Au over 40.40m (BBD1294) dot 1.06g/t Au over 44.00m (BBD1312)

7. The drill results were previously disclosed in the Company's press releases dated December, 21, 2022; March 6, 2023; December 21, 2022; and January 26, 2025, respectively. See also Table 2. 8. Composite includes below cut-off dilution. 9. The drill results were previously disclosed in the Company's press release dated March 6, 2023. See also Table 2.

- 3 - Figure 1 Bombore Plan Map Highlighting Selected Intercepts

- 4 - Figure 2 North Hill Zone Composite Long Section Highlighting Selected Intercepts (Looking Southeast)

- 5 - Figure 3 P8P9 Zone Composite Long Section Highlighting Selected Intercepts (Looking Southeast)

- 6 - Figure 4 P8P9 Zone Composite Cross Section Highlighting Selected Zone (Looking Northwest)

- 7 - Table 1 Drill Results Table

Hole Zone Easting Northing Elv. Dip Azi. EOH From To Length* Grade Type

(m) (m) (m) (m) (g/t Au)

BBC7203 P11 728012 1349498 285 -50 268 150 74.00 75.00 1.00 7.70 OX and 134.00 135.00 1.00 P11 727922 1349498 291 -50 268 7.00 1.58 HR BBC7204 101 0.00 7.00 3.00 and P11 728108 728108 279 -50 268 79.00 82.00 2.00 0.54 OX and Siga E 728104 1347980 293 -49 248 93.00 95.00 Siga E 728222 1348027 291 -49 248 1.00 1.07 HR BBC7205 Siga E 728313 728313 283 -49 248 120 1.00 BBC7206 Siga E 728311 1347894 283 -50 250 142 89.00 90.00 2.22 HR BBC7207 North Zone 728639 1353346 276 -50 312 140 136.00 137.00 1.00 BBC7208 100 5.00 NSR BBC7209 North Zone 728548 1353361 273 -50 132 60 13.00 14.00 17.00 BBC7220 100 23.00 28.00 3.00 6.65 HR Siga E 728360 1347861 280 -50 250 1.00 and Siga S 728277 1345068 270 -50 250 32.00 49.00 4.00 2.12 HR and Siga S 728229 1345049 270 -50 250 75.00 78.00 3.00 BBC7221 Siga S 728182 728182 269 -50 249 130 75.00 76.00 3.00 NSR and Siga S 728340 728340 266 -50 250 80.00 84.00 4.00 and Siga S 728294 728294 266 -50 250 95.00 98.00 8.00 1.49 OX and Siga S 728247 728247 266 -50 250 112.00 115.00 12.00 BBC7222 P16 729521 1344797 261 -50 270 111 36.00 40.00 0.38 OX BBC7223 72 31.00 39.00 12.00 BBC7224 P16 729370 729370 261 -50 268 81 12.00 24.00 4.00 0.65 OX BBC7225 P16 729281 1344447 260 -50 268 80 5.00 BBC7226 P13 726320 726320 275 -50 269 80 3.00 0.55 HR BBC7227 P13 726403 726403 274 -50 270 80 BBC7228 P13 726350 726350 275 -50 268 80 2.00 3.05 HR BBC7231 P13 726352 726352 273 -50 270 72 19.00 31.00 Incl. P13 726163 726163 273 -50 270 27.00 31.00 1.00 0.38 HR and P13 726145 1343997 271 -50 270 59.00 64.00 3.00 and P13 726145 1343799 269 -49 271 69.00 72.00 0.49 HR BBC7232 P13 726132 726132 270 -49 269 76 1.00 BBC7233 P13 726127 1343749 268 -50 267 92 90.00 92.00 1.16 HR BBC7234 P13 725743 725743 273 -50 114 140 6.00 BBC7235 P13 726214 726214 269 -50 268 130 0.33 OX BBC7236 P13 726095 1342692 273 -50 116 130 4.00 BBC7237 P13 725896 725896 275 -50 115 80 4.00 0.35 OX BBC7238 P13 724776 1341625 272 -50 117 120 13.00 BBC7239 P13 724840 1341594 273 -50 115 100 96.00 97.00 3.00 0.51 OX BBC7240 P13 724739 1341505 271 -50 115 150 87.00 90.00 7.00 BBC7241 100 2.00 NSR BBC7242 P13 724787 1341481 271 -50 113 100 59.00 60.00 BBC7243 90 1.00 NSR BBC7244 P13 724558 724558 273 -50 114 120 BBC7245 P13 724506 1340954 273 -49 117 84 36.00 42.00 3.00 NSR BBC7246 P13 724605 724605 273 -52 116 108 1.00 BBC7247 Siga S 727790 727790 266 -50 249 114 21.00 25.00 3.00 NSR BBC7248 Siga S 728280 728280 267 -49 249 60 19.00 23.00 BBC7249 P11 728053 728053 281 -50 270 120 24.00 37.00 1.06 OX and P11 728043 728043 280 -50 270 91.00 94.00 BBC7250 P11 727638 1349521 288 -50 270 60 31.00 38.00 1.86 OX Incl. P16 729412 1344361 259 -50 268 31.00 33.00 BBC7251 80 0.50 HR BBC7252 108 0.00 1.00 BBC7253 98 0.68 HR BBC7254 80 BBC7255 80 NSR BBC7256 120 BBC7257 120 0.89 HR BBC7258 120 67.00 70.00 BBD1350 201 49.00 50.00 NSR and 126.00 128.85 NSR

NSR

NSR

NSR

2.44 HR

8.81 HR

NSR

2.26 HR

NSR

NSR

0.66 OX

NSR

0.70 OX

0.21 OX

0.41 OX

1.90 HR

1.10 OX

3.16 OX

NSR

1.06 OX

NSR

NSR

NSR

NSR

NSR

1.22 HR

4.15 OX

0.84 HR

- 8 - Hole Zone Easting Northing Elv. Dip Azi. EOH From To Length* Grade Type

(m) (m) (m) (m) (g/t Au)

and 132.00 135.00 3.00 0.77 HR BBD1351 213 BBD1352 P16 728970 728970 258 -50 270 210 1.60 NSR BBD1353 P16 730374 730374 260 -51 270 390 294.80 296.40 2.00 P17 730410 1343174 261 -55 270 11.50 NSR and Siga S 728617 1345349 269 -51 250 344.00 346.00 1.00 BBD1354 240 37.00 48.50 2.60 2.98 HR Siga E 728706 1347108 273 -52 249 13.00 and 115.00 116.00 15.00 0.73 HR and Siga E 728599 1347236 274 -50 250 163.50 166.10 6.00 and 194.00 207.00 11.00 0.39 OX BBD1355 North Zone 729017 1353650 279 -50 312 174 22.00 37.00 2.00 Incl. North Zone 728937 1353652 280 -52 310 22.00 28.00 4.00 18.77 HR and 47.50 58.50 3.00 and North Zone 729094 1353643 276 -54 312 76.50 78.50 3.00 0.65 HR and North Zone 728275 1353337 270 -50 312 93.50 97.50 12.00 and 113.50 116.50 4.00 0.53 HR and P17 S 729160 729160 258 -51 270 137.50 140.50 9.00 and P17 S 730584 730584 266 -51 270 145.50 157.50 3.00 0.94 OX BBD1356 P17 S 730488 730488 267 -50 89 297 112.00 116.00 1.00 and Siga S 728917 1344927 262 -50 250 173.00 182.00 6.80 1.68 OX Incl. 173.00 176.00 4.00 and Siga S 728635 1344983 266 -53 252 199.00 200.00 9.15 0.63 OX and Siga S 728608 1345400 270 -50 249 257.00 263.80 1.60 BBD1357 270 224.00 228.00 48.00 1.37 HR BBD1358 P8P9 728505 1351717 272 -52 310 270 63.00 72.15 9.00 and 126.00 127.60 15.36 0.64 HR and P8P9 727963 1351598 269 -52 310 137.00 185.00 3.00 Incl. 165.00 174.00 1.00 0.60 HR and 234.00 259.36 3.00 Incl. 234.00 237.00 4.00 1.26 HR BBD1359 381 65.00 66.00 4.00 BBD1360 258 11.00 14.00 8.80 0.57 HR and 43.00 47.00 7.30 and 120.00 124.00 0.90 HR and 162.00 170.80 3.00 and 199.00 206.30 2.00 1.90 HR BBD1361 204 21.10 BBD1362 135 5.00 4.74 HR BBD1363 81 6.65 BBD1364 135 23.00 26.00 6.00 1.65 HR and 34.00 36.00 1.85 and 49.90 71.00 3.00 0.97 HR and 75.00 80.00 12.10 BBD1365 192 36.00 42.65 4.00 0.59 HR and 79.00 85.00 2.00 and 104.00 105.85 1.00 0.49 OX BBD1366 251 42.00 45.00 2.80 and 163.90 176.00 7.40 6.09 HR and 191.00 195.00 18.00 and 202.00 204.00 8.30 1.59 HR BBD1367 465 81.00 82.00 25.00 and 231.00 233.80 14.00 4.86 HR and 313.00 320.40 3.10 and 327.00 345.00 4.00 0.63 HR Incl. 334.70 343.00 11.00 and 424.00 449.00 6.50 1.35 HR Incl. 428.80 443.00 3.10 BBD1368 567 11.00 14.10 8.00 5.37 OX and 74.00 78.00 3.00 and 113.00 124.00 0.26 OX and 141.00 147.50 and 194.00 197.10 1.51 OX and 275.00 283.00 and 287.00 290.00 0.81 HR

0.38 HR

0.60 HR

NSR

NSR

NSR

0.62 OX

0.99 HR

0.62 HR

1.22 HR

0.72 OX

0.50 HR

2.90 HR

1.41 OX

0.57 HR

0.57 HR

1.42 HR

4.25 OX

1.39 HR

2.67 HR

0.89 HR

0.92 HR

0.68 HR

0.84 HR

0.43 OX

1.11 HR

0.43 HR

1.47 HR

0.67 HR

0.53 HR

0.76 HR

- 9 - Hole Zone Easting Northing Elv. Dip Azi. EOH From To Length* Grade Type

(m) (m) (m) (m) (g/t Au)

and 308.00 330.00 22.00 0.69 HR Incl. 310.00 317.00 7.00 and 389.00 406.00 17.00 0.97 HR Incl. 396.00 400.00 4.00 and 414.00 424.00 10.00 0.62 HR and 428.00 431.00 3.00 BBD1369 496 11.00 12.00 1.00 1.03 HR and 29.40 32.70 3.30 and 83.50 84.50 1.00 0.62 HR and 103.00 110.00 7.00 and 119.00 122.00 3.00 0.60 HR and 140.00 141.00 1.00 and P8P9 727935 1351556 269 -51 315 193.00 198.00 5.00 1.67 OX and 270.40 277.20 6.80 and P8P9 727903 1351453 272 -51 312 285.00 293.75 8.75 1.12 HR Incl. 291.00 293.75 3.00 and North Zone 728928 1353759 281 -50 313 300.00 309.00 9.00 3.55 HR and North Zone 729368 1354172 283 -51 310 315.00 318.00 3.00 and North Zone 729437 729437 286 -50 312 327.00 338.00 11.00 0.96 HR and North Zone 729485 1354333 290 -50 311 378.00 383.00 5.00 North Zone 728906 1353474 277 -49 311 3.20 1.35 HR BBD1370 North Zone 728927 1353525 278 -50 311 537 32.00 35.20 1.00 and 95.00 96.00 0.85 2.85 HR and North Zone 728943 1353675 280 -50 312 211.15 212.00 45.00 and 238.00 283.00 8.00 1.94 HR Incl. 271.00 279.00 37.00 and 288.00 325.00 5.85 0.83 HR and 352.00 357.85 13.00 and 376.00 389.00 8.00 1.48 HR and 395.00 403.00 19.00 12.00 3.65 HR BPC7210 437 1.00 20.00 3.00 and 37.00 49.00 23.00 1.16 HR Incl. 43.00 46.00 6.00 and 161.00 184.00 22.00 0.61 HR Incl. 168.00 174.40 6.00 and 277.00 299.00 12.00 0.48 HR and 354.00 360.00 14.00 4.00 0.76 HR BPC7211 349 37.00 49.00 4.00 and 277.00 291.00 0.61 HR and 295.00 299.00 3.00 and 313.00 317.00 7.00 3.64 HR 15.00 BPC7213 105 2.00 7.45 HR BPC7214 263 52.00 55.00 7.00 5.00 1.09 HR and 189.00 196.00 4.00 BPC7215 342 10.00 25.00 2.00 2.56 HR 14.00 and 208.00 210.00 6.00 0.64 HR BPC7216 343 18.00 25.00 11.00 6.00 0.89 HR and 51.00 56.00 15.00 and 69.00 73.00 11.00 0.70 HR and 183.00 185.00 2.00 and 189.00 203.00 4.00 0.58 HR Incl. 197.00 203.00 6.00 and 287.00 298.00 14.00 0.52 OX Incl. 291.00 297.00 16.10 BPC7217 294 2.00 17.00 10.10 0.30 OX and 21.00 32.00 8.00 and 36.00 38.00 9.00 1.61 OX and 42.00 46.00 and 50.00 56.00 0.78 HR and 135.00 149.00 and 186.90 203.00 1.82 HR Incl. 186.90 197.00 and 207.00 215.00 0.63 HR and 225.50 234.00 1.57 HR

0.30 OX

0.60 HR

1.22 HR

0.65 HR

NSR

1.51 OX

1.02 HR

0.48 OX

3.07 HR

0.50 OX

1.27 OX

0.55 OX

1.33 HR

2.01 HR

3.03 HR

1.63 HR

2.43 HR

0.33 OX

0.48 OX

0.86 OX

0.60 OX

0.68 OX

0.58 HR

1.97 HR

2.74 HR

0.65 HR

1.01 HR

- 10 - Hole Zone Easting Northing Elv. Dip Azi. EOH From To Length* Grade Type

(m) (m) (m) (m) (g/t Au)

Incl. 225.50 229.40 3.90 1.72 HR BPC7218 207 31.00 34.00 10.00 BPC7219 North Zone 728728 1353402 277 -50 310 158 1.00 55.00 54.00 0.48 OX North Zone 728687 1353304 276 -51 313 0.39 OX

* Mineralized intervals are reported as downhole lengths. True widths of mineralization are between 75-85% of drilled lengths.

Table 2 Referenced Reported Historic Intervals

Hole Zone Easting Northing Elv. Dip Azi. EOH From To Length* Grade Type

(m) (m) (m) (m) (g/t Au)

BBD1220 North Zone 728901 1353648 279 -56 312 229 150.00 170.00 21.00 5.35 OX BBC7141 North Zone 730390 1354301 278 -45 315 100 27.00 41.00 14.00 BBD0483 727790 1351420 282 -52 311 302 167.00 202.00 35.00 2.22 OX BBD0522 P8P9 727819 1351528 281 -51 309 351 207.00 252.00 45.00 BBD1124 P8P9 730425 1343375 261 -49 274 495 459.00 465.70 6.70 2.04 HR BBD1219 P17S 728971 1353652 279 -52 314 211 166.00 186.00 20.00 BBD1285 North Zone 728942 1353545 278 -55 313 295 199.00 215.00 18.00 1.95 HR BBD1294 North Zone 727740 1351448 280 -58 313 257 99.00 140.50 40.40 BBD1312 P8P9 727905 1351520 282 -53 307 377 260.00 304.00 44.00 7.40 HR BBD1320 P8P9 729492 1354296 289 -56 314 321 259.00 288.50 29.50 BBD1324 North Zone 728995 1353667 280 -52 312 312 193.00 216.00 23.00 3.30 HR BBD1334 North Zone 730483 1343350 261 -54 273 519 488.50 498.50 10.00 BBD1348 P17S 729566 1344413 259 -50 273 303 214.00 228.35 14.35 3.14 HR P16 1.72 HR

1.06 HR

1.14 HR

2.55 HR

1.12 HR

0.92 HR

About Orezone Gold Corporation

Orezone Gold Corporation (TSX: ORE, ASX: ORE, OTCQX: ORZCF) is a West African gold producer engaged in mining, developing, and exploring its 90%-owned flagship Bombore Gold Mine in Burkina Faso. Construction of the stage 1 hard rock expansion is well underway, with first gold expected in Q4-2025. Combined production from the oxide and stage 1 hard rock operations is forecasted to total between 170,000 and 185,000 ounces in 2026.10 The Company is also advancing the stage 2 hard rock expansion, which is forecasted to increase annual production to between 220,000 and 250,000 ounces.11

The technical report entitled Bombore Phase II Expansion, Definitive Feasibility Study is available on SEDAR+ and the Company's website.

Contact Information

Patrick Downey President and Chief Executive Officer

Kevin MacKenzie Vice President, Corporate Development and Investor Relations

Tel: 1 778 945 8977 info@orezone.com / www.orezone.com

10. Refer to footnote 6. 11. Refer to footnote 6.

- 11 - For further information please contact Orezone at +1 (778) 945 8977 or visit the Company's website at www.orezone.com.

This announcement is authorised for ASX release by Patrick Downey, President, CEO and Director.

The Toronto Stock Exchange neither approves nor disapproves the information contained in this news release.

Qualified Person and Competent Persons Statement

Alastair Gallaugher (CGeol), Exploration Manager for Orezone, is the Qualified Person under NI 43-101 and has reviewed and approved the scientific and technical information contained in this news release.

Information in this press release that relates to exploration results is based on, and fairly represents, information and supporting documentation prepared by Mr. Gallaugher, a Competent Person who is a Member of the Geological Society of London. Mr. Gallaugher has sufficient experience that is relevant to the style of mineralisation and type of deposit under consideration and to the activity which he is undertaking to qualify as a `Competent Person' as defined in the 2012 Edition of the `Australasian Code for Reporting of Exploration Results, Mineral Resources and Ore Reserves' (JORC Code). Mr. Gallaugher is an employee of the Company and consents to the inclusion in this announcement of all technical statements based on his information in the form and context in which it appears.

QA/QC

The mineralized intervals are based on a lower cut-off grade of 0.28g/t in the Oxide+Upper Transition zone, and 0.45g/t Au in the Lower Transition+Hard Rock zone. The half-core drilling samples were cut using a diamond saw by Orezone employees. The samples were prepared by BIGS Global Burkina s.a.r.l. ("BIGS Global") and then split by Orezone to 1 kg using Rotary Sample Dividers ("RSDs"). A 1kg aliquot was analyzed for leachable gold at BIGS Global in Ouagadougou, by bottle-roll cyanidation using a LeachWellTM catalyst. The leach residues from all samples with a leach grade greater than or equal to 0.25g/t Au were prepared by BIGS Global and then split by Orezone to 50g using RSDs. A 50g aliquot was analyzed by fire assay at BIGS Global.

Orezone employs a rigorous Quality Control Program including a minimum of 10% standards, blanks and duplicates. The composite width and grade include the final leach residue assay results for most of the drill intercepts reported.

Cautionary Note Regarding Forward-Looking Statements

This press release contains certain information that constitutes "forward-looking information" within the meaning of applicable Canadian Securities laws and "forward-looking statements" within the meaning of applicable U.S. securities laws (together, "forward-looking statements"). Forward-looking statements are frequently characterized by words such as "plan", "expect", "project", "intend", "believe", "anticipate", "estimate", "potential", "possible" and other similar words, or statements that certain events or conditions "may", "will", "could", or "should" occur.

Forward-looking statements in this press release include, but are not limited to statements with respect to the exploration program and the significant exploration upside at Bombore including that the broader system remains open at depth, along strike and outside of the currently delineated mineralized trends; the potential to materially expand the project's resource base from the current global 5 million gold ounces, to a targeted 7 to 10 million gold ounces longer term (as an aspirational statement, being a forward-looking statement for Canadian and U.S. securities laws and not a forward-looking statement for Australian purposes) and the ongoing production expansion to 220,000 to 250,000 ounces per annum; evidence that the hanging wall and footwall of the broader 14km long

- 12 - reserve defined system are prospective for additional near-surface discoveries; the initial step-out results support the interpretation that P16 is a sub-parallel trend to the P17 Trend, which significantly expands the exploration model and potential within this region of the project; and significant potential remains to extend resources to the north of the existing open pit designs in the North Zone. Forward-looking statements are not guarantees of future performance and involve known and unknown risks, uncertainties, assumptions and other important factors, many of which are beyond the control of the Company, its Directors, and management, and which could cause actual results or events to differ materially from those expressed or implied. Past performance is not a guide to future performance. Such risks and uncertainties include, but are not limited to, terrorist or other violent attacks, the failure of parties to contracts to honour commitments, unexpected changes in laws, rules or regulations or their enforcement, social or labour unrest, changes in commodity prices, failure or inadequacy of infrastructure, project cost overruns or unanticipated costs and expenses, accidents and equipment breakdowns, political risk, unanticipated changes in key management personnel, the spread of diseases, epidemics and pandemics, adverse market or business conditions, failure of exploration or drilling programs to deliver anticipated results, uncertainties relating to the availability and costs of future financing, and other factors described in the Company's most recent audited annual consolidated financial statements, annual MD&A, Annual Information Form for the year ended December 31, 2024, and in Section 4 of the Company's prospectus dated July 11, 2025, copies of which are available on SEDAR+ (www.sedarplus.ca) and the Company's website. Readers are cautioned not to place undue reliance on forward-looking statements. Forward-looking statements are based on the applicable assumptions and factors management considers reasonable as of the date hereof, based on the information available to management at such time. These assumptions and factors include, but are not limited to, assumptions and factors related to the Company's ability to carry on current and future operations, including: development and exploration activities; the timing, extent, duration and economic viability of such operations, including any mineral resources or reserves identified thereby; the accuracy and reliability of estimates, projections, forecasts, studies and assessments; the Company's ability to meet or achieve estimates, projections and forecasts; the availability and cost of inputs; the price and market for outputs, including gold; foreign exchange rates; taxation levels; the timely receipt of necessary approvals or permits; the ability to meet current and future obligations; the ability to obtain timely financing on reasonable terms when required; the current and future social, economic and political conditions; and other assumptions and factors generally associated with the mining industry. Although the forward-looking statements contained in this press release are based upon what management of the Company believes are reasonable assumptions, the Company cannot assure investors that actual results will be consistent with these forward-looking statements. These forward-looking statements are made as of the date of this press release and are expressly qualified in their entirety by this cautionary statement. Subject to applicable securities laws, the Company does not assume any obligation to update or revise the forward-looking statements contained herein to reflect events or circumstances occurring after the date of this press release.

- 13 - Table 1 JORC Code, 2012 Edition

Section 1 Sampling Techniques and Data

Criteria JORC Code Explanation Commentary

Sampling Nature and quality of sampling (e.g. cut channels, random chips, or Reverse circulation (RC) drill samples are collected every techniques specific specialised industry standard measurement tools appropriate metre for the entire length of the borehole. All material to the minerals under investigation, such as down hole gamma from each meter was sampled via conical splitter attached sondes, or handheld XRF instruments, etc.). These examples should to the RC rig cyclone. This produces a 2-3kg sub-sample not be taken as limiting the broad meaning of sampling. which is collected in a prelabelled sample bag with sequential sample numbers. Include reference to measures taken to ensure sample representivity and the appropriate calibration of any measurement tools or systems Historical RC sampling includes collecting the cyclone used. underflow sample, splitting in a rotary sample divider to generate a RC sub-sample with a mass of plus or minus2.1 kg. Aspects of the determination of mineralisation that are Material to the Public Report. HQ and NQ drill core samples are collected from half-drill core cut evenly lengthwise with a diamond saw at regular In cases where `industry standard' work has been done this would be 1 m intervals. Sampling per geological contacts is relatively simple (e.g. `reverse circulation drilling was used to obtain 1 permitted plus or minus 0.2m either side of the meter mark. Samples m samples from which 3 kg was pulverised to produce a 30 g charge are numbered and bagged before dispatch to the for fire assay'). In other cases, more explanation may be required, laboratory. Samples were consistently cut on a nominal 10 such as where there is coarse gold that has inherent sampling degree rotation from the orientation line mark on the core problems. Unusual commodities or mineralisation types (e.g. (where orientation available, otherwise a consistent cut- submarine nodules) may warrant disclosure of detailed information. line is established) and the non-orientation/cut-line marked side of the core is submitted for assay.

Samples were submitted to BIGS Laboratory in Ouagadougou after drying, the entire sample is crushed to 6 mm and pulverised to achieve 85% passing 106 m. The pulverised samples are returned to site and rotary split to 1 kg for use as original samples and duplicates. Samples are returned to BIGS for Au determination by 1kg LeachWELL with atomic absorption spectrometry (AAS) finish.

Drilling techniques Drill type (e.g. core, reverse circulation, open-hole hammer, rotary air RC drilling was undertaken using a contractor owned rig

blast, auger, Bangka, sonic, etc.) and details (e.g. core diameter, triple with auxiliary air. 4" or 4 1/2" face sampling hammers are

or standard tube, depth of diamond tails, face-sampling bit or other used.

type, whether core is oriented and if so, by what method, etc.). Diamond drill core material from both surface drilling and

pre-collars is collected from a combination of HQ and NQ

diameter diamond drilling (collaring in HQ and change over

to NQ diameter in fresh rock) obtained by wireline drilling

with standard tube.

Core orientations were completed using Reflex Act II or ACT III RD orientation tools with the orientation line marked up at the rig side and reviewed by geologists in the core shed.

Drill sample Method of recording and assessing core and chip sample recoveries Diamond core recoveries are measured in the core trays recovery and results assessed. and recorded as recovered meters and recovered % as part of the geological logging process. RC sample recovery was Measures taken to maximise sample recovery and ensure qualitatively logged with weights of bulk samples recorded representative nature of the samples. at the rig side.

Whether a relationship exists between sample recovery and grade Sample recovery and integrity was maximised by drilling and whether sample bias may have occurred due to preferential with sufficient air pressure to maintain dry samples with loss/gain of fine/coarse material. holes stopped if significant water ingress. Dry, moist or wet samples are recorded in the database.

Examination of the RC and DD composite grade distributions suggests a slight positive bias between the RC and DD composite sample populations at grades <0.15 g/t, and a negative bias between these two populations at grades higher than 0.20 g/t. These biases are not considered critical, and no correction factors were applied.

Logging Whether core and chip samples have been geologically and Logging protocols were followed to a level of detail suitable geotechnically logged to a level of detail to support appropriate for support of the Mineral Resource and Ore Reserve Mineral Resource estimation, mining studies and metallurgical estimate. Both RC chip samples and core samples include studies. quantitative analysis (Niton XRF) and photographs. Core sample logging included qualitative data such as lithology, Whether logging is qualitative or quantitative in nature. Core (or weathering intensity, competence (RQD) and costean, channel, etc.) photography. discontinuities.

The total length and percentage of the relevant intersections logged.

- 14 - Criteria JORC Code Explanation Commentary Sub-sampling techniques and All reported drilling is logged in its entirety. sample preparation If core, whether cut or sawn and whether quarter, half or all core Core samples are collected from half-drill core cut taken. lengthwise with a diamond saw. Quality of assay data and If non-core, whether riffled, tube sampled, rotary split, etc. and RC samples representing a 1/8 split of each meter drilled laboratory tests whether sampled wet or dry. are collected from a rig-mounted cone splitter. Drilling is discontinued if dry sample is unable to be maintained. Verification of For all sample types, the nature, quality and appropriateness of the sampling and sample preparation technique. Field duplicates are collected from the RC rig splitter and assaying inserted into the regular sample stream every 50 samples. Quality control procedures adopted for all sub-sampling stages to Mineralised RC field duplicates for 2025 drilling are within 1 maximise representivity of samples. % of the original split. Lab-aware pulp duplicates a inserted every 25 samples for diamond core samples. Measures taken to ensure that the sampling is representative of the in-situ material collected, including for instance results for field For both RC and DD samples, the entire sample is crushed duplicate/second-half sampling. and pulverised with >85% passing 75microns.

Whether sample sizes are appropriate to the grain size of the The 2-3 kg sample size is deemed appropriate given that material being sampled. the gold occurs as fine grained electrum.

The nature, quality and appropriateness of the assaying and Reviews of the sampling, analytical, and quality assurance

laboratory procedures used and whether the technique is considered and quality control (QA/QC) protocols used on the RC and

partial or total. core programs have been completed and acceptable levels

For geophysical tools, spectrometers, handheld XRF instruments, of accuracy have been achieved.

etc., the parameters used in determining the analysis including No geophysical tools, spectrometers, or handheld XRF

instrument make and model, reading times, calibrations factors instruments have been used in the reported exploration

applied and their derivation, etc. results to determine chemical composition at a semi-

Nature of quality control procedures adopted (e.g. standards, blanks, quantitative level of accuracy. Assaying for gold is by the duplicates, external laboratory checks) and whether acceptable levels LeachWELL bottle roll cyanide leach method. Gold content of accuracy (i.e. lack of bias) and precision have been established. in the solution is determined using atomic absorption analysis. For all the samples having liquor grade

>0.2 g/t Au, the tail is washed, dried and a 50 g charge is

split and submitted for assaying using a conventional fire

assay procedure on 50 g sub-sample.

The QA/QC protocol since 2011 is to submit 2% Blind Field Duplicates, 3% Blind Pulp Duplicates, 5% Lab Aware Pulp Duplicates, 2% Blind Blanks and 3% Blind Standards.

The laboratory inserted commercial standards and completed repeat assays. Repeat or duplicate analysis for samples shows that the precision of samples is within acceptable limits, and a review of results from both laboratory and Company inserted commercial standards indicate acceptable levels of accuracy have been established.

The verification of significant intersections by either independent or The Competent Person has confirmed the sample alternative company personnel. preparation, security, analytical procedures and QA/QC undertaken are adequate for the purposes of Mineral The use of twinned holes. Resource estimation and that there are no factors that Documentation of primary data, data entry procedures, data materially impact the reliability or accuracy of the dataset employed in the calculation. verification, data storage (physical and electronic) protocols. Data acquisition is completed on a combination of paper Discuss any adjustment to assay data. log sheets, and entry into a self-validating data entry software package (LogChief). Integrated datasets have been uploaded to the Company's SQL hosted database and archived on physical back-up drives.

There are no twinned holes.

Below detection limit values (negatives) have been replaced by background values.

Location of data Accuracy and quality of surveys used to locate drill holes (collar and The borehole collars are spotted in the field and pegged points down-hole surveys), trenches, mine workings and other locations using a differential global positioning system (DGPS) set to used in Mineral Resource estimation. achieve sub-metre accuracy. Post drilling, the completed holes are surveyed by Bombore mine surveyors using Specification of the grid system used. Trimble GNSS with correction by real time kinematic (RTK) to ensure sub decimeter accuracy. Quality and adequacy of topographic control. Grid system is based on the UTM30N grid on the WGS84 ellipsoid. Down hole surveys were undertaken by the Company using a Reflex Ez-Trac tool and Reflex OMNI Gyro with readings measured in continuous and multishot mode

- 15 - Criteria JORC Code Explanation Commentary

with readings taken between 10-30m. Holes are validated in IMDEX Hub prior to inclusion in the drillhole database. Azimuths measured using magnetic fields are converted to a geographic azimuth using the declination applicable at the time of the survey.

Data spacing and Data spacing for reporting of Exploration Results. Data spacing is variable across the deposit, ranging from distribution 50x50m at the periphery to 25x25m in the more densely Whether the data spacing and distribution is sufficient to establish drilled core. the degree of geological and grade continuity appropriate for the Mineral Resource and Ore Reserve estimation procedure(s) and The oxide resources have been defined along 50 m-spaced classifications applied. drill sections with 25 m between the drill collars. The hard rock resources have been defined generally along 50 m- Whether sample compositing has been applied. spaced drill sections with 50 m between the drill collars.

Drill samples were composited to 1m for use in resource estimation. Mining at Bombore has demonstrated reasonable continuity over a strike of 10 km at a cut-off grade of 0.15 g/t Au. At this cut-off grade, the gold mineralisation forms corridors 500 m to 1,000 m in length and 10 m to 100 m in width. At a cut-off grade of 0.5 g/t Au, the higher-grade subdomains have a strike length of up to 500 m and a width typically between 5 m and 30 m.

Support of the strong continuity of mineralisation along strike has been confirmed by mining production and mapping of pit walls and floors.

Orientation of data Whether the orientation of sampling achieves unbiased sampling of In all areas, the drilling direction is opposite to the dip and in relation to possible structures and the extent to which this is known, considering orthogonal to the average strike of the lithological units, geological the deposit type. major fabrics, and wireframed mineralised domains. The structure plunge of the boreholes at the collar is generally 50degree plus or minus5degree, If the relationship between the drilling orientation and the thereby intersecting the lithological units, major fabric and orientation of key mineralised structures is considered to have wireframed mineralised domains at an angle between 65degree introduced a sampling bias, this should be assessed and reported if and 90degree. material. No sampling bias was deemed to have occurred.

Sample security The measures taken to ensure sample security. Strict security measures are applied throughout the sampling, sample preparation, and analytical stages. The RC samples and the drill core retrieved by the drillers are collected and handled at the drill site by Orezone personnel. The sample bags are transported by a dedicated driver to a secure storage area in the Bombore Gold Project area. The sample storage area at the Bombore Gold Project is fenced and a watchman provides full-time security. Finally, the samples are dispatched to the analytical laboratories under the direct control of Orezone staff, who monitor the preparation and shipment of the samples. This procedure ensures reasonable chain of custody by Orezone from the drill sites to the analytical laboratory.

Audits or reviews The results of any audits or reviews of sampling techniques and data. In 2017, Mr Yassa collected 50 samples from 15 RC boreholes and 35 cored boreholes during the site visit for independent analysis of gold content. There was a good correlation between the independently collected verification samples analysed at SGS and the Orezone data.

- 16 - Section 2 Reporting of Exploration Results

Criteria JORC Code Explanation Commentary

Mineral tenement Type, reference name/number, location and ownership including The Project covers an area of 12,963 ha and consists of one and land tenure status agreements or material issues with third parties such as joint Industrial Operating Permit (the Bombore Mining Permit)

ventures, partnerships, overriding royalties, native title interests, of 2,887 ha, surrounded by four Mining Exploration

historical sites, wilderness or national park and environmental Permits: the Bombore II Exploration Permit of 1,265 ha, the

settings. Bombore III Exploration Permit of 3,360 ha, the Bombore IV

The security of the tenure held at the time of reporting along with Exploration Permit of 833 ha and the Bombore V permit of any known impediments to obtaining a licence to operate in the area. 4,618 ha.

The Bombore Mining Permit is registered in the name of

Orezone Bombore S.A. (OBSA), a 90%-owned subsidiary of

Orezone Inc. S.A.R.L, itself a 100%-owned subsidiary of

Orezone Inc., which is 100% owned by Orezone. The

Bombore Mining Permit was granted to OBSA by way of

Decree No. 2016-1266/PRES/PM/MEMC/MINEFID/MEEVCC

dated 30 December 2016 and is valid for an initial tenure of

10.7 years but can be extended if the mine life is extended

beyond what was initially applied for.

All mining ventures in Burkina Faso are subject to a 10% free carried interest and a royalty on gold sold in favour of the Government of Burkina Faso, upon the award of an operating permit from the government.

Exploration done Acknowledgment and appraisal of exploration by other parties. Between 1989 and 2000, mineral exploration programs by other parties were completed by La Generale des Mines et des Carrieres (GMC), Channel, Solomon, and Placer Dome. A total of 1,271 core, RC and rotary air blast (RAB) boreholes were completed. Channel completed 10 diamond boreholes for approximately 1,100 m, 261 RC boreholes for approximately 20,000 m, and 1,000 RAB boreholes for approximately 34,000 m.

Geology Deposit type, geological setting and style of mineralisation. Bombore is an orogenic gold deposit, exhibiting structural control and associated hydrothermal alteration mineral assemblages. The deposit represents a large tonnage, low- grade gold mineralisation system similar to other Birimian gold deposits, such as Kiaka in Burkina Faso, Damang, Yamfo-Selwi in Ghana, and Sadiola in Mali.

The geological setting is part of a northeast southwest trending greenstone belt extending for 50 km. The permit area is underlain mainly by a metasedimentary flysch-type sequence dominated by metasandstones with subordinate carbonaceous meta-pelites and polymictic metaconglomerates.

The Bombore gold deposits occur within a major north to northeast trending structure. The gold deposits were discovered by tracing gold-in-soil anomalies to bedrock by drilling. Gold mineralisation is associated with arrays of structurally controlled quartz veins and veinlets and attendant silica, sulphide, and carbonate alteration.

Drill hole A summary of all information material to the understanding of the The Bombore mine commenced production in 2022. Information exploration results including a tabulation of the following information The Mineral Resource estimate includes a total of 6,322 RC for all Material drill holes: drill holes and 1,426 diamond drill core holes.

easting and northing of the drill hole collar The Competent Person has determined that the detailed elevation or RL (Reduced Level elevation above sea level in information on the drill holes is not material and does not detract from the understanding of the report. metres) of the drill hole collar dip and azimuth of the hole

down hole length and interception depth

hole length.

If the exclusion of this information is justified on the basis that the information is not Material and this exclusion does not detract from the understanding of the report, the Competent Person should clearly explain why this is the case.

Data aggregation In reporting Exploration Results, weighting averaging techniques, All intersections are assayed on predominantly 1 m methods maximum and/or minimum grade truncations (e.g. cutting of high intervals and no top-cuts are applied to exploration results. grades) and cut-off grades are usually Material and should be stated. Reporting of mineralised intervals is based on a lower cut- off grade of 0.28 g/t in the Oxide+Upper Transition zone,

- 17 - Criteria JORC Code Explanation Commentary

Where aggregate intercepts incorporate short lengths of high-grade and 0.45 g/t Au in the Lower Transition+Hard Rock zone, results and longer lengths of low-grade results, the procedure used with a minimal width of 1.5 m and up to a maximum of for such aggregation should be stated and some typical examples of 3.0 m of dilution being included. such aggregations should be shown in detail.

The assumptions used for any reporting of metal equivalent values should be clearly stated.

Relationship These relationships are particularly important in the reporting of The majority of the drilling was planned to intersect between Exploration Results. mineralisation in a perpendicular manner or as close as mineralisation practicable. widths and If the geometry of the mineralisation with respect to the drill hole intercept lengths angle is known, its nature should be reported. The true width of the mineralisation is approximately 75% to 85% of the drill length in the oxide zone. If it is not known and only the down hole lengths are reported, there should be a clear statement to this effect (e.g. `down hole length, true width not known').

Diagrams Appropriate maps and sections (with scales) and tabulations of Appropriate diagrams have been included for reporting of intercepts should be included for any significant discovery being significant intercepts. reported These should include but not be limited to a plan view of drill hole collar locations and appropriate sectional views.

Balanced reporting Where comprehensive reporting of all Exploration Results is not All grades, high and low, are reported accurately with practicable, representative reporting of both low and high grades `from' and `to' depths and `hole identification' shown. and/or widths should be practiced to avoid misleading reporting of Exploration Results.

Other substantive Other exploration data, if meaningful and material, should be All material exploration data including metallurgical test exploration data reported including (but not limited to): geological observations; results have been reported. geophysical survey results; geochemical survey results; bulk samples size and method of treatment; metallurgical test results; bulk density, groundwater, geotechnical and rock characteristics; potential deleterious or contaminating substances.

Further work The nature and scale of planned further work (e.g. tests for lateral In 2024 Orezone designed an initial 30,000 m first pass extensions or depth extensions or large-scale step-out drilling). exploration drill program, that will test multiple targets across the greater than 14 km long mineralised system. Diagrams clearly highlighting the areas of possible extensions, This initial program will be used to refine target priority for including the main geological interpretations and future drilling subsequent exploration drilling in this multi-year campaign, areas, provided this information is not commercially sensitive. as well as to advance the project's evolving structural framework. Phase 1 of this initial program will be centred on the North Zone and thereafter, drilling will progressively advance towards the southern half of the mining lease.

First pass drilling along the Bombore Shear Zone (BSZ) will be focused on testing the potential of the mineralised system to depths of up to 400 m. While drilling will be wide spaced in nature, the objective will be to increase pit depths longer-term, as well as to illustrate the broad continuity of multiple higher grade plunging zones of mineralisation that are well defined by shallower drilling and current mining operations. These higher-grade plunging sub-zones may further support an underground mining scenario later in the project's mine life, once high- grade near-surface open pits are depleted.

- 18 -