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Eldorado Gold Releases Updated Mineral Reserve and Mineral Resource Statement; Offsetting Depletion and Increasing Mineral Reserves at Key Operations

VANCOUVER, British Columbia, Nov. 26, 2025 (GLOBE NEWSWIRE) -- Eldorado Gold Corporation (TSX:ELD) (NYSE:EGO) (“Eldorado” or “the Company”) today releases its updated Mineral Reserve and Mineral Resource (“MRMR”) estimates as of September 30, 2025.

“Our commitment to exploration continues to unlock long-term value, driving another increase in Mineral Reserves,” said George Burns, Chief Executive Officer. “We successfully offset depletion at key operations, including the Lamaque Complex, Kisladag and Olympias. Overall, Mineral Reserves increased by approximately 5%, primarily driven by a 25% increase at the Lamaque Complex. This strengthens our foundation and supports a robust production outlook for the next decade, underpinned by an average mine life of 13 years. Importantly, this update reflects a higher but conservative gold price assumption of $1,700 per ounce compared to last year’s gold price assumption of $1,450 per ounce, reinforcing the resilience of our portfolio.

Exploration success also increased Inferred Mineral Resources by nearly 21%, primarily from additions of Inferred Mineral Resources in the sulfide zone at Perama Hill in Greece and at Bonnefond in the vicinity of the Lamaque Complex (25 km from the Sigma Mill), reinforcing our strategy to extend mine life and advance near-mine opportunities.

At the Lamaque Complex, we more than replaced depletion through successful resource conversion at Ormaque and in the Lower Triangle zones. This represents the highest reserve estimate since acquisition in 2017 and positions the Lamaque Complex for long-term growth with two underground mines offering significant conversion potential and exploration upside.

In 2026, we will continue to invest in organic growth through exploration, prioritizing mine life extension at existing operations and advancing near-mine opportunities, while also pursuing new discoveries across our highly prospective early-stage exploration portfolio in Canada and Turkiye. It’s shaping up to be an exciting year, and you can expect more news and updates as we advance these initiatives.”

Mine Life

(Based on Mineral Reserves) Mine Life (years)
Efemcukuru Mine 8
Kisladag Mine 13
Lamaque Complex 8
Olympias Mine 16
Skouries Project 20
Average Mine Life 13


Mineral Reserves Update

The Company’s Proven and Probable gold Mineral Reserves totalled 12.5 million ounces as of September 30, 2025, representing an increase of approximately 5% compared to the previous MRMR statement dated September 30, 2024. The complete MRMR table and notes can be found at the end of this release.

  Ore Tonnes (t x 1,000) Gold Grade (g/t) Total Mineral Reserves (Gold Ounces) x 1,000)
Mineral Reserves as of September 30, 2024(1) 344,733 1.07 11,911
Depletion(1) (14,351) 1.55 (713)
Adjustments for metal prices, cut-off value, mine plan optimization, additions due to new drilling and conversion of Resources 41,326 1.02 1,327
Mineral Reserves as of September 30, 2025 371,708 1.05 12,525


(1) Depletion declared here are in-situ ounces. Depletion includes the 12-month period of October 1, 2024, through September 30, 2025.


The increase in gold Mineral Reserves is primarily attributable to additions at the Lamaque Complex, Kisladag and Olympias.

  • Lamaque Complex: Mineral Reserves increased 25%, driven by conversion at Ormaque and Triangle, in addition to declaring initial Mineral Reserves at Plug #4.
    • Ormaque: Processing the second bulk sample and increasing drilling density improved confidence in the deposit, enabling an increase in reserve grade and ounces.
    • Triangle: New drilling platforms accelerated drilling in the lower levels of the Triangle deposit (C6-C10), significantly increasing the Mineral Reserves.
  • Kisladag: Mineral Reserves increased 11%, supported by the higher gold price assumption and mine optimization, including improved pit design.
  • Olympias: Mineral Reserves increased slightly beyond depletion, driven by the higher gold price assumption, updated resource modelling and improved concentrate marketing terms. Additional drilling allowed for refinements to the geologic model.
  • Efemcukuru: Mineral Reserves decreased due to depletion, partially offset by the addition of Mineral Reserves from Kokarpinar 63.
  • Skouries: Mineral Reserves increased slightly following minor design modifications.
  • Perama Hill Oxides: Mineral Reserves decreased slightly due to block model changes and mine design updates.

The following table summarizes the period-over-period changes to the Company’s Mineral Reserves:

Gold Mineral Reserves
  2024 2025 Change(1)
Change excluding depletion
Contained Gold Oz (x 1,000)
Lamaque Complex        
Triangle + Plug #4 658 743 85 284
Ormaque & Parallel 619 848 229 254
Lamaque Complex Total 1,277 1,591 314 538
Efemcukuru 678 630 (48) 44
Kisladag 3,559 3,946 414 674
Olympias 1,770 1,780 10 121
Perama Hill 997 912 (85) (85)
Skouries 3,630 3,666 36 36
Total 11,911 12,525 642 1,328


NOTES:
(1) The Company reports its MRMR as of September 30, 2025. As such, the change year over year is from October 1, 2024 to September 30, 2025.
(2) Totals may not sum due to rounding.


Mineral Resources Update

Eldorado’s Measured and Indicated Mineral Resources (“M&I Mineral Resources”) totalled 17.4 million ounces gold, as of September 30, 2025. The Company’s M&I Mineral Resources decreased 5% compared to the previous MRMR statement. The decrease was primarily driven from depletion at Kisladag and Perama Hill as a result of reclassification of a portion of the oxides to Inferred Mineral Resources.

Eldorado’s Inferred Mineral Resources totalled 8.2 million ounces as of September 30, 2025, reflecting a 21% increase from the previous MRMR statement. This increase was primarily driven by new Inferred Resources at Bonnefond located in the vicinity of the Lamaque Complex and at Perama Hill with the addition of resources in the sulfide zone.

Detailed MRMR disclosure tables are included at the end of this news release.

  • Lamaque Complex: The increase in total M&I Mineral Resources was primarily driven by conversion from Inferred Mineral Resources.
    • Ormaque: M&I Mineral Resources increased through conversion of Inferred Mineral Resources. Inferred Mineral Resources decreased due to this conversion, partially offset by updated estimation parameters.
    • Triangle: M&I Mineral Resources increased through expansion and conversion of Inferred Mineral Resources. Inferred Mineral Resources decreased as a result of this conversion.
  • Bonnefond: The increase in M&I Mineral Resources and Inferred Mineral Resources reflects the addition of initial estimates for each category.
  • Kisladag: The decrease in M&I Mineral Resources was primarily due to depletion, while Inferred Mineral Resources remained relatively unchanged period-over-period.
  • Efemcukuru: M&I Mineral Resources decreased due to depletion, partially offset by conversion from Inferred Mineral Resources. A slight increase in Inferred Mineral Resources reflects new depth extensions in the Kokarpinar zones.
  • Olympias: Both M&I Mineral Resources and Inferred Mineral Resources increased, driven by the higher gold price assumption and improved resource modelling, partially offset by depletion.
  • Skouries: M&I Mineral Resources decreased due to block model updates and reclassification to Inferred Mineral Resources. Inferred Mineral Resources also decreased from block model updates, partially offset by reclassification from M&I Mineral Resources.
  • Perama Hill:
    • Oxides: M&I Resources decreased due to reclassification to Inferred Mineral Resources, reflecting boundary limitations near the closest village.
    • Sulfides: Initial Inferred Mineral Resources were declared for the sulfide zone.

The following table summarizes the period-over-period changes to the Company’s Mineral Resources:

Measured and Indicated Gold Mineral Resources(1) Inferred Gold Mineral Resources
  2024(2) 2025 Change(3)
2024(2) 2025 Change(3)
Contained Gold ounces (x 1,000) Contained Gold ounces (x 1,000)
Lamaque Complex            
Triangle & Plug #4 1,424 1,524 100 1,731 1,398 (333)
Ormaque & Parallel 748 1,153 405 837 602 (235)
Lamaque Complex Total 2,172 2,677 505 2,568 2,000 (568)
Bonnefond 0 74 74 0 423 423
Efemcukuru 1,155 1,074 (81) 168 178 10
Kisladag 5,816 5,359 (457) 100 91 (9)
Olympias 2,663 2,677 14 457 714 257
Perama Hill – Oxide 1,374 908 (466) 59 392 333
Perama Hill – Sulfide 0 0 0 0 1,025 1,025
Perama South 0 0 0 728 728 0
Piavitsa 0 0 0 1,025 1,025 0
Sapes 0 0 0 820 820 0
Skouries 5,030 4,613 (417) 814 770 (44)
Total 18,210 17,382 (902) 6,739 8,166 1,427


NOTES:
(1) Mineral Resources are inclusive of Mineral Reserves.
(2) For comparative purposes, 2024 excludes the Mineral Resources at Certej which was sold in October 2025.
(3) The Company Reports on its MRMR as of September 30, 2025. As such, the change year-over-year is from October 1, 2024 to September 30, 2025.
(4) Totals may not sum due to rounding.


About Eldorado

Eldorado is a gold and base metals producer with mining, development and exploration operations in Türkiye, Canada and Greece. The Company has a highly skilled and dedicated workforce, safe and responsible operations, a portfolio of high-quality assets, and long-term partnerships with local communities. Eldorado's common shares trade on the Toronto Stock Exchange (TSX: ELD) and the New York Stock Exchange (NYSE: EGO).

Contact

Investor Relations

Lynette Gould, VP, Investor Relations, Communications & External Affairs
647 271 2827 or 1 888 353 8166
lynette.gould@eldoradogold.com

Media

Chad Pederson, Director, Communications and Public Affairs
236 885 6251 or 1 888 353 8166
chad.pederson@eldoradogold.com

Eldorado Gold Mineral Reserves as of September 30, 2025
Project Proven Mineral Reserves Probable Mineral Reserves Total Proven and Probable
Gold Tonnes Au Contained Au Tonnes Au Contained Au Tonnes Au Contained Au
  (x1000) g/t ounces (x1000) (x1000) g/t ounces (x1000) (x1000) g/t ounces (x1000)
Efemcukuru 929 4.04 120 3,361 4.72 510 4,290 4.57 630
Kisladag 175,742 0.65 3,645 18,702 0.50 301 194,444 0.63 3,946
Triangle, Plug #4 1,243 5.55 222 2,829 5.73 521 4,072 5.68 743
Ormaque, Parallel 42 12.49 17 2,759 9.37 831 2,801 9.41 848
Lamaque Complex 1,285 5.78 239 5,588 7.53 1,352 6,873 7.20 1,591
Olympias 3,791 7.38 899 5,400 5.07 881 9,191 6.02 1,780
Perama Hill 3,000 4.36 421 5,909 2.59 491 8,910 3.18 912
Skouries 72,536 0.85 1,992 75,465 0.69 1,674 148,001 0.77 3,666
TOTAL GOLD 257,283 0.88 7,316 114,425 1.42 5,209 371,708 1.05 12,525
Silver Tonnes Ag Contained Ag Tonnes Ag Contained Ag Tonnes Ag Contained Ag
  (x1000) g/t ounces (x1000) (x1000) g/t ounces (x1000) (x1000) g/t ounces (x1000)
Efemcukuru 929 13.5 404 3361 11.1 1202 4,290 11.6 1606
Olympias 3,791 122 14,929 5,400 112 19,427 9,191 116 34,356
Perama Hill 3,000 3.88 374 5,909 4.78 909 8,910 4.48 1,283
TOTAL SILVER 7,720 63 15,707 14,670 46 21,538 22,391 52 37,245
Copper Tonnes Cu Contained Cu Tonnes Cu Contained Cu Tonnes Cu Contained Cu
  (x1000) % tonnes (x1000) (x1000) % tonnes (x1000) (x1000) % tonnes (x1000)
Skouries 72,536 0.51 366 75,465 0.50 375 148,001 0.50 741
TOTAL COPPER 72,536 0.51 366 75,465 0.50 375 148,001 0.50 741
Lead Tonnes Pb Contained Pb Tonnes Pb Contained Pb Tonnes Pb Contained Pb
  (x1000) % tonnes (x1000) (x1000) % tonnes (x1000) (x1000) % tonnes (x1000)
Olympias 3,791 3.9 149 5,400 3.9 211 9,191 3.9 360
TOTAL LEAD 3,791 3.9 149 5,400 3.9 211 9,191 3.9 360
Zinc Tonnes Zn Contained Zn Tonnes Zn Contained Zn Tonnes Zn Contained Zn
  (x1000) % tonnes (x1000) (x1000) % tonnes (x1000) (x1000) % tonnes (x1000)
Olympias 3,791 4.9 185 5,400 5.4 290 9,191 5.2 475
TOTAL ZINC 3,791 4.9 185 5,400 5.4 290 9,191 5.2 475


Eldorado Gold Mineral Reserves as of September 30, 2024
Project Proven Mineral Reserves Probable Mineral Reserves Total Proven and Probable
Gold Tonnes Au Contained Au Tonnes Au Contained Au Tonnes Au Contained Au
  (x1000) g/t ounces (x1000) (x1000) g/t ounces (x1000) (x1000) g/t ounces (x1000)
Efemcukuru 985 5.13 162 3,436 4.67 515 4,421 4.77 678
Kisladag 151,878 0.68 3,296 15,688 0.52 263 167,566 0.66 3,559
Triangle, Parallel 1,357 5.70 249 1,956 6.50 409 3,313 6.19 658
Ormaque 3 7.76 1 2,661 7.22 618 2,664 7.22 619
Lamaque Complex 1,360 5.72 250 4,617 6.92 1,027 5,977 6.65 1,277
Olympias 3,411 7.90 868 5,930 4.70 903 9,341 5.89 1,770
Perama Hill 3,116 4.08 409 7,196 2.54 587 10,312 3.01 997
Skouries 73,101 0.87 2,053 74,015 0.66 1,576 147,116 0.77 3,630
TOTAL GOLD 233,851 0.94 7,038 110,882 1.37 4,871 344,733 1.07 11,911
Silver Tonnes Ag Contained Ag Tonnes Ag Contained Ag Tonnes Ag Contained Ag
  (x1000) g/t ounces (x1000) (x1000) g/t ounces (x1000) (x1000) g/t ounces (x1000)
Efemcukuru 985 14.19 449 3436 11.29 1247 4,421 11.93 1696
Olympias 3,411 118 12,979 5,930 116 22,046 9,341 117 35,024
Perama Hill 3,116 4.02 403 7,196 5.37 1,241 10,312 4.96 1,644
TOTAL SILVER 7,512 57 13,831 16,562 46 24,534 24,074 50 38,364
Copper Tonnes Cu Contained Cu Tonnes Cu Contained Cu Tonnes Cu Contained Cu
  (x1000) % tonnes (x1000) (x1000) % tonnes (x1000) (x1000) % tonnes (x1000)
Skouries 73,101 0.52 381 74,015 0.49 359 147,116 0.50 740
TOTAL COPPER 73,101 0.52 381 74,015 0.49 359 147,116 0.50 740
Lead Tonnes Pb Contained Pb Tonnes Pb Contained Pb Tonnes Pb Contained Pb
  (x1000) % tonnes (x1000) (x1000) % tonnes (x1000) (x1000) % tonnes (x1000)
Olympias 3,411 3.7 128 5,930 4.2 250 9,341 4.0 378
TOTAL LEAD 3,411 3.7 128 5,930 4.2 250 9,341 4.0 378
Zinc Tonnes Zn Contained Zn Tonnes Zn Contained Zn Tonnes Zn Contained Zn
  (x1000) % tonnes (x1000) (x1000) % tonnes (x1000) (x1000) % tonnes (x1000)
Olympias 3,411 4.6 158 5,930 5.3 315 9,341 5.1 474
TOTAL ZINC 3,411 4.6 158 5,930 5.3 315 9,341 5.1 474


Eldorado Gold Mineral Resources as of September 30, 2025
Project Measured Resources Indicated Resources Total Measured and Indicated Inferred Resources
Gold Tonnes Au Contained Au Tonnes Au Contained Au Tonnes Au Contained Au Tonnes Au Contained Au
  (x1000) g/t ounces (x1000) (x1000) g/t ounces (x1000) (x1000) g/t ounces (x1000) (x1000) g/t ounces (x1000)
                         
Efemcukuru 1,529 6.25 307 3,625 6.58 767 5,154 6.48 1,074 1,419 3.90 178
Kisladag 238,626 0.62 4,767 38,158 0.48 593 276,784 0.60 5,359 6,594 0.43 91
Triangle, Plug #4 2,129 6.57 450 4,955 6.74 1,074 7,084 6.69 1,524 6,043 7.20 1,398
Ormaque, Parallel 56 12.77 23 3650 9.63 1,130 3,706 9.68 1,153 2,044 9.16 602
Lamaque Complex 2,185 6.73 473 8,605 7.97 2,204 10,790 7.72 2,677 8,087 7.69 2,000
Bonnefond 0 0.00 0 514 4.48 74 514 4.48 74 2,699 4.87 423
Olympias 4,760 9.32 1,426 5,864 6.63 1,251 10,624 7.84 2,677 2,693 8.25 714
Perama Hill – Oxide 2,980 4.30 412 6,194 2.49 496 9,175 3.08 908 3,959 3.08 392
Perama Hill – Sulfide 0 0.00 0 0 0.00 0 0 0.00 0 13,002 2.45 1,025
Perama South 0 0.00 0 0 0.00 0 0 0.00 0 14,870 1.52 728
Piavitsa 0 0.00 0 0 0.00 0 0 0.00 0 6,613 4.82 1,025
Sapes 0 0.00 0 0 0.00 0 0 0.00 0 3,434 7.43 820
Skouries 89,669 0.82 2,378 117,662 0.59 2,235 207,331 0.69 4,613 58,294 0.41 770
TOTAL GOLD 339,749 0.89 9,763 180,623 1.31 7,618 520,372 1.04 17,382 121,665 2.09 8,166
Silver Tonnes Ag Contained Ag Tonnes Ag Contained Ag Tonnes Ag Contained Ag Tonnes Ag Contained Ag
  (x1000) g/t ounces (x1000) (x1000) g/t ounces (x1000) (x1000) g/t ounces (x1000) (x1000) g/t ounces (x1000)
                         
Efemcukuru 1,529 22 1,096 3,625 22 2,571 5,154 22 3,666 1,419 32 1,469
Olympias 4,760 152 23,251 5,864 140 26,478 10,624 146 49,728 2,693 143 12,355
Perama Hill – Oxide 2,980 4 372 6,194 5 929 9,175 4.4 1,302 3,959 10 1,297
Perama Hill – Sulfide 0 0 0 0 0 0 0 0 0 13,002 12 4,851
Piavitsa 0 0 0 0 0 0 0 0 0 6,613 54 11,389
Stratoni 0 0 0 1,391 152 6,785 1,391 152 6,785 1,807 166 9,672
TOTAL SILVER 9,269 83 24,719 17,075 67 36,763 26,344 73 61,481 29,494 43 41,034
Copper Tonnes Cu Contained Cu Tonnes Cu Contained Cu Tonnes Cu Contained Cu Tonnes Cu Contained Cu
  (x1000) % tonnes (x1000) (x1000) % tonnes (x1000) (x1000) % tonnes (x1000) (x1000) % tonnes (x1000)
Perama Hill – Sulfide 0 0 0 0 0 0 0 0 0 13,002 0.12 15
Skouries 89,669 0.49 443 117,662 0.46 546 207,331 0.48 989 58,294 0.40 233
TOTAL COPPER 89,669 0.49 443 117,662 0.46 546 207,331 0.48 989 58,294 0.40 233
Lead Tonnes Pb Contained Pb Tonnes Pb Contained Pb Tonnes Pb Contained Pb Tonnes Pb Contained Pb
  (x1000) % tonnes (x1000) (x1000) % tonnes (x1000) (x1000) % tonnes (x1000) (x1000) % tonnes (x1000)
Olympias 4,760 4.9 233 5,864 4.8 284 10,624 4.9 517 2,693 4.7 127
Stratoni 0 0.0 0 1,391 6.0 84 1,391 6 84 1,807 6.9 124
TOTAL LEAD 4,760 4.89 233 7,255 5.1 368 12,015 5.0 601 4,500 5.6 251
Zinc Tonnes Zn Contained Zn Tonnes Zn Contained Zn Tonnes Zn Contained Zn Tonnes Zn Contained Zn
  (x1000) % tonnes (x1000) (x1000) % tonnes (x1000) (x1000) % tonnes (x1000) (x1000) % tonnes (x1000)
Olympias 4,760 6.2 293 5,864 6.7 394 10,624 6.5 687 2,693 5.7 153
Stratoni 0 0.0 0 1,391 8.4 117 1,391 8.4 117 1,807 8.3 150
TOTAL ZINC 4,760 6.2 293 7,255 7.0 511 12,015 6.7 804 4,500 6.7 303


Eldorado Gold Mineral Resources as of September 30, 2024(1)
Project Measured Resources Indicated Resources Total Measured and Indicated Inferred Resources
Gold Tonnes Au Contained Au Tonnes Au Contained Au Tonnes Au Contained Au Tonnes Au Contained Au
  (x1000) g/t ounces (x1000) (x1000) g/t ounces (x1000) (x1000) g/t ounces (x1000) (x1000) g/t ounces (x1000)
Efemcukuru 1,556 7.23 362 3,849 6.40 793 5,405 6.64 1,155 1,300 4.02 168
Kisladag 260,131 0.61 5,129 42,358 0.50 687 302,489 0.59 5,816 6,656 0.47 100
Triangle, Plug #4, Parallel 2,269 6.55 477 4,367 6.74 947 6,636 6.67 1,424 8,188 6.58 1,731
Ormaque 3 7.76 1 1414 16.44 747 1,417 16.41 748 1,750 14.87 837
Lamaque Complex 2,272 6.55 478 5,781 9.12 1,694 8,053 8.39 2,172 9,938 8.04 2,568
Olympias 4,200 9.71 1,311 6,966 6.04 1,352 11,166 7.42 2,663 2,081 6.82 457
Perama Hill 3,093 4.15 412 10,973 2.73 962 14,066 3.04 1,374 1,136 1.63 59
Perama South 0 0.00 0 0 0.00 0 0 0.00 0 14,870 1.52 728
Piavitsa 0 0.00 0 0 0.00 0 0 0.00 0 6,613 4.82 1,025
Sapes 0 0.00 0 0 0.00 0 0 0.00 0 3,434 7.43 820
Skouries 90,714 0.85 2,479 149,260 0.53 2,551 239,974 0.65 5,030 67,657 0.37 814
TOTAL GOLD 361,966 0.87 10,171 219,187 1.14 8,039 581,153 0.97 18,210 113,685 1.84 6,739
Silver Tonnes Ag Contained Ag Tonnes Ag Contained Ag Tonnes Ag Contained Ag Tonnes Ag Contained Ag
  (x1000) g/t ounces (x1000) (x1000) g/t ounces (x1000) (x1000) g/t ounces (x1000) (x1000) g/t ounces (x1000)
Efemcukuru 1,556 22 1,091 3,849 22 2,663 5,405 22 3,754 1,300 31 1,303
Olympias 4,200 147 19,846 6,966 139 31,119 11,166 142 50,965 2,081 135 9,028
Perama Hill 3,093 4 415 10,973 7 2,579 14,066 7 2,994 1,136 2 83
Piavitsa 0 0 0 0 0 0 0 0 0 6,613 54 11,389
Stratoni 0 0 0 1,391 152 6,785 1,391 152 6,785 1,807 166 9,672
TOTAL SILVER 8,849 75 21,352 23,179 58 43,146 32,028 63 64,498 12,937 76 31,475
Copper Tonnes Cu Contained Cu Tonnes Cu Contained Cu Tonnes Cu Contained Cu Tonnes Cu Contained Cu
  (x1000) % tonnes (x1000) (x1000) % tonnes (x1000) (x1000) % tonnes (x1000) (x1000) % tonnes (x1000)
Skouries 90,714 0.51 466 149,260 0.44 652 239,974 0.47 1,118 67,657 0.40 267
TOTAL COPPER 90,714 0.51 466 149,260 0.44 652 239,974 0.47 1,118 67,657 0.40 267
Lead Tonnes Pb Contained Pb Tonnes Pb Contained Pb Tonnes Pb Contained Pb Tonnes Pb Contained Pb
  (x1000) % tonnes (x1000) (x1000) % tonnes (x1000) (x1000) % tonnes (x1000) (x1000) % tonnes (x1000)
Olympias 4,200 4.7 197 6,966 5.0 350 11,166 4.9 547 2,081 5.0 105
Stratoni 0 0.0 0 1,391 6.0 84 1,391 6 84 1,807 6.9 124
TOTAL LEAD 4,200 4.69 197 8,357 5.2 434 12,557 5.0 631 3,888 5.9 229
Zinc Tonnes Zn Contained Zn Tonnes Zn Contained Zn Tonnes Zn Contained Zn Tonnes Zn Contained Zn
  (x1000) % tonnes (x1000) (x1000) % tonnes (x1000) (x1000) % tonnes (x1000) (x1000) % tonnes (x1000)
Olympias 4,200 5.9 247 6,966 6.5 451 11,166 6.3 698 2,081 5.9 123
Stratoni 0 0.0 0 1,391 8.4 117 1,391 8.4 117 1,807 8.3 150
TOTAL ZINC 4,200 5.9 247 8,357 6.8 568 12,557 6.5 815 3,888 7.0 273


Notes:
1) Certej was removed from the 2024 Mineral Resources for comparison purposes following the sale of the Company’s Romanian assets in October 2025


ADVISORIES AND DETAILED NOTES ON MINERAL RESERVES AND RESOURCES

General

Mineral Reserves and Mineral Resources are as of September 30, 2025

The Mineral Reserves and Mineral Resources were classified using logic consistent with the CIM Definition Standards for Mineral Resources & Mineral Reserves (2014) incorporated, by reference, into National Instrument 43-101 – Standards of Disclosure for Mineral Projects (“NI 43-101”). Sample preparation, analytical techniques, laboratories used, and quality assurance and quality control protocols used during exploration drilling programs are done consistently with industry standards and independent certified assay labs are used.

Mineral Reserves are included in the Mineral Resources.

The Mineral Reserves and Mineral Resources are disclosed on a total project basis.

Measured and Indicated Mineral Resources which are not Mineral Reserves, do not have demonstrated economic viability. With respect to “Inferred Mineral Resources”, there is a great amount of uncertainty as to their existence and uncertainty as to their economic and legal feasibility. It cannot be assumed that all or any part of a “Measured Mineral Resource”, “Indicated Mineral Resource” or “Inferred Mineral Resource” will ever be upgraded to a higher category.

Additional information on the Kisladag, Efemcukuru, Olympias, Skouries and Lamaque mineral properties mentioned in this news release (all of which are considered to be material mineral properties to the Company) are contained in Eldorado’s annual information form for the year ended December 31, 2024 and the following technical reports for each of those properties, all of which are available under the Company's profile at www.sedarplus.com and www.sec.gov:

  • Amended Technical report entitled “Technical Report, for the Lamaque Complex, Quebec, Canada’” with an effective date of December 31, 2024.
  • Technical report entitled “Technical Report, Olympias Mine, Greece” with an effective date of December 31, 2023.
  • Technical report entitled "Technical Report, Efemcukuru Gold Mine, Turkiye” with an effective date of December 31, 2023.
  • Technical report entitled “Technical Report, Skouries Project, Greece” with an effective date of January 22, 2022.
  • Technical report entitled "Technical Report, Kisladag Gold Mine, Turkiye” with an effective date of January 17, 2020.

Qualified Persons

Simon Hille, FAusIMM, Executive Vice President, Operations and Technical Services, is the “qualified person” under NI 43-101 responsible for preparing and supervising the preparation of the scientific or technical information contained in this news release and verifying the technical data disclosed in this document relating to our operating mines and development projects, unless otherwise noted. Additional qualified persons have approved disclosures for specific properties as detailed in “Mineral Reserve Notes” and “Mineral Resource Notes” below. Jessy Thelland, géo (OGQ No. 758), Director Technical Services Lamaque, a member in good standing of the Ordre des Géologues du Québec, is the qualified person as defined in NI 43-101 responsible for, and has verified and approved, the scientific and technical disclosure contained in this news release for the Quebec projects.

Cautionary Note to US Investors Concerning Estimates of Measured, Indicated and Inferred Resources
There are differences between the standards and terms used for reporting mineral reserves and resources in Canada, and in the United States pursuant to the United States Securities and Exchange Commission’s (the “SEC”). The terms Mineral Resource, Measured Mineral Resource, Indicated Mineral Resource and Inferred Mineral Resource are defined by the Canadian Institute of Mining, Metallurgy and Petroleum (CIM) and the CIM Definition Standards on Mineral Reserves and Mineral Resources adopted by the CIM Council, and must be disclosed according to Canadian securities regulations.

These standards differ from the requirements of the SEC applicable to domestic United States reporting companies. Accordingly, information contained in this news release with respect to mineral deposits may not be comparable to similar information made public by United States companies subject to the SEC’s reporting and disclosure requirements.

Mineral Reserve Notes

Eldorado reports Mineral Reserves in accordance with CIM Definition Standards. Mineral Reserves for the operating sites (Efemcukuru, Kisladag, Olympias, and within the Lamaque Complex – Ormaque, Triangle, Parallel and Plug #4) and the Skouries and Perama Hill projects were determined using a long-term gold price of $1,700/oz. A reserve test is undertaken every year to confirm future undiscounted cash flow from the reserve mine plan is positive.

Long-Term Metal Price Assumptions – Mineral Reserves 2024 2025
Gold price ($ per ounce) 1,450(1) 1,700
Silver price ($ per ounce) 19.00 20.00
Copper price ($ per pound) 2.75 3.50
Copper price ($ per tonne) 6,061 7,714
Lead price ($ per tonne) 2,000 2,000
Zinc price ($ per tonne) 2,500 2,500


(1) Skouries and Perama Hill used a $1,300 Au price for Mineral Reserves based on the timing of the last detailed study on each project. As both project studies have advanced with updated operating cost estimates, the same Au Reserve Price is used across the entire portfolio for 2025.


Cut-off Grades/Values – Mineral Reserves 2024 2025
Efemcukuru $130.05/t NSR (long hole stoping), $136.10/t NSR (drift and fill) $145.36/t NSR (long hole stoping), $151.76/t NSR (drift and fill)
Kisladag 0.179 g/t Au Recoverable 0.1575 g/t Au Recoverable
Lamaque Complex 4.99 g/t Au (long hole stoping), 5.67 g/t Au (drift and fill) 4.19 g/t Au (long hole stoping), 4.54 g/t Au (drift and fill)
Olympias $216.79/t NSR $223.40/t NSR
Perama Hill 0.81 g/t Au 0.85 g/t Au
Skouries $10.60/t NSR (open pit), $33.33/t NSR (underground) $15.00/t NSR (open pit), $40.00/t NSR (underground)


Qualified Persons

The following persons, all of whom are qualified persons under NI 43-101, have approved the disclosure related to the Mineral Reserves for the projects noted below contained within this release:

Asset Mining Type(s) Qualified Person Company
Lamaque Complex: Triangle, Plug #4 Underground Jessy Thelland, géo (OGQ No. 758), Technical Services Director Lamaque Eldorado Gold
Lamaque Complex: Ormaque, Parallel Underground Phillippe Groleau, Eng, (OIQ No. 5032770), Senior Strategic Planner Eldorado Gold
Kisladag Open Pit Raj Priyadarshi, P.Eng., Manager, Open Pit Mine Planning Eldorado Gold
Efemcukuru Underground Mike Tsafaras, P.Eng., Director, Mine Planning Eldorado Gold
Olympias Underground Filip Medinac, P.Eng., Technical Services Manager, Olympias Eldorado Gold
Skouries Open Pit and Underground Mike Tsafaras, P.Eng., Director, Mine Planning Eldorado Gold
Perama Hill Open Pit Mike Tsafaras, P.Eng., Director, Mine Planning Eldorado Gold


Mineral Resource Notes

Eldorado reports Mineral Resources in accordance with CIM Definition Standards. All Mineral Resources are assessed for reasonable prospects for eventual economic extraction (RPEEE). The Resource cut-off grades or values (e.g. gold equivalent) are determined using a long-term gold price ($2,100/oz) and modifying factors derived in the resource to reserve conversion process (or by comparison to similar projects for our resource-only properties). These values are then used to create constraining volumes that provide limits to the reported Resources. Resource grades are reported undiluted from within the constraining volumes that satisfy RPEEE.

Open Pit Resources used pit shells created with the long-term gold price to constrain reportable model blocks. Underground Resources were constrained by volumes whose design was guided by a combination of the reporting cut-off grade or value, contiguous areas of mineralization and mineability. Eldorado’s Mineral Resources are inclusive of Reserves.

Long-Term Metal Price Assumptions – Mineral Resources 2024 2025
Gold price ($ per ounce) 1,800 2,100
Silver price ($ per ounce) 24.00 24.00
Copper price ($ per pound) 3.25 4.15
Copper price ($ per tonne) 7,163 9,147
Lead price ($ per tonne) 2,200 2,200
Zinc price ($ per tonne) 2,800 2,800


Mineral Resource Reporting and demonstration of Reasonable Prospects for Eventual Economic Extraction:

The Mineral Resources used a long term look gold metal price of $2,100/oz for the determination of resource cut-off grades or values. This guided execution of the next step where constraining surfaces or volumes were created to control resource reporting Only material internal to these volumes were eligible for reporting. Projects with both open pit and underground Resources have the open pit Resources constrained by an open pit/underground economic crossover surface, and underground Resources constrained by a reporting shape.

Cut-off Grades/Values
Mineral Resources
2024 2025
Bonnefond 3.0 g/t Au
Efemcukuru 2.5 g/t Au(1) $104.50/t NSR
Kisladag 0.27 g/t Au (in-situ) 0.13 g/t Au recoverable
Lamaque Complex Triangle, Plug #4, Parallel, Ormaque: 3.5 g/t Au Longhole : 3.40 g/t,
Drift-and-fill (Ormaque): 3.67 g/t Au
Olympias $115/t NSR $105.50/t NSR
Perama Hill – Oxide & Sulfide 0.50 g/t Au 0.71 g/t Au
Perama South 0.50 g/t Au 0.50 g/t Au
Piavitsa 4.0 g/t Au 4.0 g/t Au
Sapes 2.5 g/t Au (underground), 1.0 g/t Au (open pit) 2.5 g/t Au (underground), 1.0 g/t Au (open pit)
Skouries 0.30 g/t Au Equivalent grade (open pit), 0.70 g/t Au Equivalent grade (underground); Au Equivalent (g/t) = (Au g/t + 1.25*Cu%) Open Pit : $15/t NSR
Underground : $40/t NSR
Stratoni $200/t NSR, based on Zn Equivalent grade of 10% $200/t NSR, based on Zn Equivalent grade of 10%


(2) Mineralized shapes based on RPEEE identified based on 2.5 g/t Au COG; within shapes material below incremental COG of 1.0 g/t have been excluded; grades are diluted by must-take material between 1.0 and 2.5 g/t Au


Qualified Persons

The following persons, all of whom are qualified persons under NI 43-101, have approved the disclosure related to the Mineral Resources for the projects noted below contained within this release:

Asset Mining Type(s) Qualified Person Company
Lamaque Complex: Triangle, Plug #4, Ormaque, Parallel Underground Jessy Thelland, géo (OGQ No. 758), Technical Services Director, Lamaque Eldorado Gold
Bonnefond Underground Karine Brousseau, Eng. (OIQ No. 121871), Senior Manager, Resource Geology Eldorado Gold
Kisladag Open Pit Karine Brousseau, Eng. (OIQ No. 121871), Senior Manager, Resource Geology Eldorado Gold
Efemcukuru Underground Karine Brousseau, Eng. (OIQ No. 121871), Senior Manager, Resource Geology Eldorado Gold
Olympias Underground Karine Brousseau, Eng. (OIQ No. 121871), Senior Manager, Resource Geology Eldorado Gold
Skouries Open Pit Sean McKinley, P.Geo., Manager, Mine Geology & Advanced Projects Eldorado Gold
Skouries Underground Sean McKinley, P.Geo., Manager, Mine Geology & Advanced Projects Eldorado Gold
Perama Hill Open Pit Karine Brousseau, Eng. (OIQ No. 121871), Senior Manager, Resource Geology Eldorado Gold
Perama South Open Pit Karine Brousseau, Eng. (OIQ No. 121871), Senior Manager, Resource Geology Eldorado Gold
Piavitsa Underground Sean McKinley, P.Geo., Manager, Mine Geology & Advanced Projects Eldorado Gold
Sapes Underground & Open Pit Sean McKinley, P.Geo., Manager, Mine Geology & Advanced Projects Eldorado Gold
Stratoni Underground Sean McKinley, P.Geo., Manager, Mine Geology & Advanced Projects Eldorado Gold


Cautionary Note about Forward-looking Statements and Information

Certain of the statements made and information provided in this news release are forward-looking statements or information within the meaning of the United States Private Securities Litigation Reform Act of 1995 and applicable Canadian securities laws. Often, these forward-looking statements and forward-looking information can be identified by the use of words such as “anticipates”, “believes”, “budget”, “continue”, “estimates”, “expects”, “forecasts”, “foresee”, “future”, “goal”, “guidance”, “intends”, “opportunity”, “outlook”, “plans”, “potential”, “strive”, “target” or “underway” or the negatives thereof or variations of such words and phrases or statements that certain actions, events or results “can”, “could”, “likely”, “may”, “might”, “will” or “would” be taken, occur or be achieved.

Forward-looking statements or information are by their nature based on a number of assumptions, that management considers reasonable. However, such assumptions involve both known and unknown risks, uncertainties and other factors which, if proven to be inaccurate, may cause actual results, activities, performance or achievements may be materially different from those described in the forward-looking statements or information. Forward-looking statements or information contained in this release include, but are not limited to, statements or information with respect to: our Mineral Reserves and Mineral Resources; our expected mine life for various assets; our long term production outlook; our strategy to extend mine life and advance near term mine opportunities; long term prospects for the Lamaque Complex;; investments in exploration in 2026; plans for additional disclosure on organic growth initiatives; the disclosed outlook on long term metal prices; and generally our strategy, plans and goals.

We have made certain assumptions about the forward-looking statements and information, including assumptions about: our ability to obtain all required approvals and permits in a timely manner and our ability to comply with all the conditions that are imposed in such approvals and permits; timing, cost and results of our construction and development activities, improvements and exploration; the future price of gold and other commodities and the global concentrate market; exchange rates; anticipated values, costs, expenses and working capital requirements; production and metallurgical recoveries; Mineral Reserves and Mineral Resources; our ability to unlock the potential of our brownfield property portfolio; our ability to address the negative impacts of climate change and adverse weather; consistency of agglomeration and our ability to optimize it in the future; the cost of, and extent to which we use, essential consumables (including fuel, explosives, cement, and cyanide); the impact and effectiveness of productivity initiatives; the time and cost necessary for anticipated overhauls of equipment; expected by-product grades; the use, and impact or effectiveness, of growth capital; the impact of acquisitions, dispositions, suspensions or delays on our business; the sustaining capital required for various projects; and the geopolitical, economic, permitting and legal climate that we operate in (including disruptions to shipping operations and related impacts).

Even though our management believes that the assumptions made and the expectations represented by such statements or information are reasonable, there can be no assurance that the forward-looking statement or information will prove to be accurate. Many assumptions may be difficult to predict and are beyond our control.

Furthermore, should one or more of the risks, uncertainties or other factors materialize, or should underlying assumptions prove incorrect, actual results may vary materially from those described in forward-looking statements or information. These risks, uncertainties and other factors include, among others, development risks at Skouries and other development projects; risks relating to our operations in foreign jurisdictions; risks related to production and processing; our ability to secure supplies of power and water at a reasonable cost; prices of commodities and consumables; our reliance on significant amounts of critical equipment; our reliance on infrastructure, commodities and consumables; inflation risk; community relations and social license; environmental matters; geotechnical and hydrogeological conditions or failures; waste disposal; mineral tenure; permits; non-governmental organizations; reputational issues; climate change; change of control; actions of activist shareholders; estimation of Mineral Reserves and Mineral Resources; regulatory reviews and different standards used to prepare and report Mineral Reserves and Mineral Resources; risks relating to any pandemic, epidemic, endemic, or similar public health threats; regulated substances; acquisitions, including integration risks; dispositions; co-ownership of our properties; investment portfolio; volatility, volume fluctuations, and dilution risk in respect of our shares; competition; reliance on a limited number of smelters and off-takers; information and operational technology systems; liquidity and financing risks; indebtedness (including current and future operating restrictions, implications of a change of control, ability to meet debt service obligations, the implications of defaulting on obligations and changes in credit ratings); total cash costs per ounce and AISC (particularly in relation to the market price of gold and the Company’s profitability); currency risk; interest rate risk; credit risk; tax matters; financial reporting (including relating to the carrying value of our assets and changes in reporting standards); the global economic environment; labour; employee misconduct, key personnel, skilled workforce, expatriates, and contractors); commodity price risk; default on obligations; current and future operating restrictions; reclamation and long-term obligations; credit ratings; change in reporting standards; the unavailability of insurance; Sarbanes-Oxley Act, applicable securities laws, and stock exchange rules; risks relating to environmental, sustainability, and governance practices and performance; corruption, bribery, and sanctions; employee misconduct; litigation and contracts; conflicts of interest; compliance with privacy legislation; dividends; and tariffs and other trade barriers. The reader is directed to carefully review the detailed risk discussion in our most recent Annual Information Form & Form 40-F filed on SEDAR+ and EDGAR under our Company name, for a fuller understanding of the risks and uncertainties that affect our business and operations.

The inclusion of forward-looking statements and information is designed to help you understand management’s current views of our near- and longer-term prospects, and it may not be appropriate for other purposes.

There can be no assurance that forward-looking statements or information will prove to be accurate, as actual results and future events could differ materially from those anticipated in such statements. Accordingly, you should not place undue reliance on the forward-looking statements or information contained herein. Except as required by law, we do not expect to update forward-looking statements and information continually as conditions change and you are referred to the full discussion of the Company’s business contained in the Company’s reports filed with the securities regulatory authorities in Canada and the United States.


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