The Mineral Resource and Mineral Reserve at 31 December 2025 for AngloGold Ashanti are reported in accordance with the SEC mining property disclosure requirements set forth in Regulation S-K 1300.
The reporting criteria, as outlined in Regulation S-K 1300, have been used in the preparation of internal documentation for each operation, from which the Mineral Resource and Mineral Reserve stated in this report have been drawn.
In compliance with Regulation S-K 1300, the Mineral Resource in this report is reported as exclusive of the Mineral Reserve before dilution and other factors are applied, unless otherwise stated.
Measured and Indicated Mineral Resource is reported separately from Inferred Mineral Resource in our reports. Mineral Resource and Mineral Reserve estimates are reported at 31 December 2025 and are net of depletion.
For additional information, refer to Table 1 (Summary Mineral Resource) and Table 2 (Summary Mineral Reserve) to Paragraph (b) of Item 1303 (Summary disclosure) of Regulation S-K below. These summary tables are also presented in AngloGold Ashanti’s annual report on Form 20-F for the financial year ended 31 December 2025 filed with the SEC. These summary tables include each class of Mineral Resource (Inferred, Indicated and Measured) together with total Measured and Indicated Mineral Resource, and each class of Mineral Reserve (Probable and Proven) together with total Mineral Reserve.
Summary of changes for gold
AngloGold Ashanti reports a 68.0Moz gold Measured and Indicated Mineral Resource, 49.3Moz gold Inferred Mineral Resource and 36.5Moz gold Mineral Reserve after revisions, acquisitions and depletion.
Mineral Resource
Over the past three years, gold Measured and Indicated Mineral Resource has increased despite the 2025 disposals of Doropo (Africa) and Serra Grande (Americas). Growth was driven by the 2024 acquisitions of Sukari and Doropo (Africa), three-year exploration success and improved economics across most African operations, AGA Mineração (Americas), and Nevada’s Arthur Gold Project, along with the 2025 acquisition of Augusta in Nevada.
Gold Inferred Mineral Resource increased in 2024, primarily reflecting the acquisition of Sukari, Doropo, and the ABC Project (Africa). In 2025, Inferred Mineral Resource decreased mainly due to the disposal of Doropo and the ABC Project (Africa) and Serra Grande (Americas), as well as the first-time declaration of a Mineral Reserve at the Merlin deposit which reduced Mineral Resource at the Arthur Gold Project, partially offset by the 2025 acquisition of Augusta in Nevada.
Gold Measured and Indicated Mineral Resource (Moz)
Gold Inferred Mineral Resource (Moz)
Mineral Reserve
Over the past three years, gold Mineral Reserve has increased considerably—driven by the 2024 acquisition of Sukari (Africa), notable three-year Mineral Reserve growth at Geita (Africa) and AGA Mineração (Americas), and the first-time declaration of a Mineral Reserve in 2025 at the Arthur Gold Project following exploration success and completion of a prefeasibility study.
Gold Mineral Reserve (Moz)
Year-on-year reconciliation
Gold
The AngloGold Ashanti gold Measured and Indicated Mineral Resource increased from 67.1Moz at 31 December 2024 to 68.0Moz at 31 December 2025. Additions included 1.3Moz from the acquisition of the Reward and Bullfrog assets from Augusta, exploration and modelling changes of 1.0Moz and economic assumptions of 0.4Moz. The additions were partially offset by reductions which included disposals of the Doropo, ABC and Serra Grande assets of 1.7Moz and other factors of 0.1Moz. As a result, the net year-on-year gold Measured and Indicated Mineral Resource addition was 0.9Moz.
The AngloGold Ashanti gold Inferred Mineral Resource decreased from 55.0Moz at 31 December 2024 to 49.3Moz at 31 December 2025. Additions included exploration and modelling changes of 3.4Moz (excluding the Arthur Gold Project) and 0.3Moz from the acquisition of the Reward and Bullfrog assets from Augusta and other factors of 0.2Moz. The additions were fully offset by exploration and modelling reductions of 5.8Moz at the Arthur Gold Project due to the development of a new Mineral Reserve, disposals of the Doropo, ABC and Serra Grande assets of 3.3Moz and economic assumptions of 0.5Moz. As a result, the net year-on-year gold Inferred Mineral Resource reduction was 5.7Moz.
On 7 March 2026, AngloGold Ashanti entered into a definitive agreement to sell AngloGold Ashanti Colombia S.A.S., which owns the La Colosa project, to Mineros S.A. At 31 December 2025, the Gold Measured and Indicated Mineral Resource at La Colosa amounted to 23.35Moz and the gold Inferred Mineral Resource at La Colosa amounted to 4.98Moz.
The gold Mineral Resource at 31 December 2025 was estimated using a gold price of $2,000/oz, unless otherwise stated (2024: $1,900/oz).
Year-on-year reconciliation Measured & Indicated Mineral Resource Gold (Moz)
Year-on-year reconciliation Inferred Mineral Resource Gold (Moz)
Year-on-year changes
| Moz | |||
|---|---|---|---|
| Measured and Indicated |
Inferred | ||
| Mineral Resource at 31 December 2024 | 67.1 | 55.0 | |
| Acquisition | Reward and Bullfrog assets from Augusta Gold, included in Nevada Regional Deposits | 1.3 | 0.3 |
| Sub-total | 68.4 | 55.3 | |
| Disposals | Doropo & ABC projects and Serra Grande Mine | (1.7) | (3.3) |
| Sub-total | 66.7 | 52.0 | |
| Notable changes | Due to: | ||
| Arthur Gold Project | The addition in Indicated was due to a successful exploration infill drilling campaign at Merlin which supported an increase in confidence in the Mineral Resource. The addition was offset by the declaration of a first-time Mineral Reserve which led to an overall reduction in the Inferred Mineral Resource. | 1.0 | (6.6) |
| Iduapriem | The addition was due to moderate gains from exploration drilling, an increase in gold price as well as methodology changes to the plant constraint for reasonable prospects, offset partially by costs. | 0.5 | 1.2 |
| AGA Mineração | The addition was due to exploration drilling at both Cuiabá and Lamego, modelling at Lamego and an increase in gold price. | 1.0 | 0.4 |
| Geita | The addition was due to ongoing exploration drilling success and modelling changes mainly in Measured and Indicated Mineral Resource, an increase in gold price, offset partially by cost. | 1.0 | 0.0 |
| Other | Combined impact of other changes less than 0.5Moz. | (2.2) | 2.3 |
| Mineral Resource at 31 December 2025 | 68.0 | 49.3 | |
Copper
The AngloGold Ashanti copper Mineral Resource remained unchanged at 1.32Mt (2,902Mlb) Measured and Indicated Mineral Resource and 1.47Mt (3,231Mlb) Inferred Mineral Resource at 31 December 2025 as compared to 31 December 2024, as a feasibility study optimisation is ongoing and no additional exploration has been completed at Quebradona.
The copper Mineral Resource at 31 December 2025 was estimated using a copper price of $3.50/lb (2024: $3.50/lb).
Year-on-year changes
| Mlb | |||
|---|---|---|---|
| Measured and Indicated |
Inferred | ||
| Mineral Resource at 31 December 2024 | 2,902 | 3,231 | |
| No changes | Due to: | ||
| Quebradona | The optimisation of the feasibility study is ongoing and no additional exploration has been completed. | — | — |
| Mineral Resource at 31 December 2025 | 2,902 | 3,231 | |
Gold
The AngloGold Ashanti gold Mineral Reserve increased from 31.2Moz at 31 December 2024 to 36.5Moz at 31 December 2025. Additions consisted of exploration and modelling changes of 7.3Moz, including the first-time reporting of the Arthur Gold Project Mineral Reserve of 4.9Moz, the acquisition of the Reward asset from Augusta of 0.4Moz, economic assumptions of 2.1Moz and other factors of 0.2Moz. The additions were partially offset by reductions that included depletion of 2.7Moz and disposals of the Doropo and Serra Grande assets of 2.0Moz. As a result, the net year-on-year gold Mineral Reserve addition was 5.3Moz.
The gold Mineral Reserve at 31 December 2025 was estimated using a gold price of $1,700/oz, unless otherwise stated (2024: $1,600/oz).
Year-on-year reconciliation Mineral Reserve Gold (Moz)
Year-on-year changes
| Moz | ||
|---|---|---|
| Mineral Reserve at 31 December 2024 | 31.2 | |
| Depletion | (2.7) | |
| Sub-total | 28.5 | |
| Acquisition | Reward asset from Augusta Gold, included in Nevada Regional Deposits | 0.4 |
| Sub-total | 28.9 | |
| Disposal | Doropo and Serra Grande | (2.0) |
| Sub-total | 26.9 | |
| Notable additions | Due to: | |
| Arthur Gold Project | The addition was due to the exploration drilling success at Merlin and the completion of the Pre-Feasibility Study (PFS) resulting in a first-time Merlin Mineral Reserve. | 4.9 |
| Geita | The addition was due to ongoing exploration drilling success and an increase in gold price, offset partially by depletion and cost. | 1.3 |
| Kibali | The addition was due to exploration drilling and an increase in gold price offset partially by depletion and cost. | 0.6 |
| Obuasi | The addition was due to an increase in gold price and improvements from geological reinterpretation and validation offset partially by depletion and cost. | 0.6 |
| Iduapriem | The addition was due to primarily due to the inclusion of Block 4 as a result of exploration drilling and improved economic parameters offset partially by depletion. | 0.5 |
| AGA Mineração | The addition was due to exploration drilling from the Cuiabá HW gallery in the Main Orebody, geological model revisions at Lamego and an increase in gold price offset partially by depletion and cost at both Cuiabá and Lamego. | 0.4 |
| Other | Combined impact of additions less than 0.3Moz. | 1.3 |
| Sub-total | 36.5 | |
| Notable reductions | Due to: | |
| Other | None | — |
| Mineral Reserve at 31 December 2025 | 36.5 | |
Copper
The AngloGold Ashanti copper Mineral Reserve remained unchanged at 1.47Mt (3,250Mlb) at 31 December 2025 as compared to 31 December 2024, as a feasibility study optimisation is ongoing and no additional exploration has been completed at Quebradona.
The copper Mineral Reserve at 31 December 2025 was estimated using a copper price of $3.10/lb (2024: $2.90/lb).
Year-on-year changes
| Mlb | ||
|---|---|---|
| Mineral Reserve at 31 December 2024 | 3,250 | |
| No changes | Due to: | |
| Quebradona | The optimisation of the feasibility study is ongoing and no additional exploration has been completed. | — |
| Mineral Reserve at 31 December 2025 | 3,250 | |
By-products
Several by-products are expected to be recovered as a result of processing of the gold Mineral Reserve and copper Mineral Reserve. These include 0.26Mt of sulphur from Brazil, 18.37Moz of silver from Argentina, 28.11Moz of silver from Colombia and 11.36Moz of silver from Nevada, USA. Molybdenum, at present, is not planned for recovery at Quebradona. The Quebradona process plant has been designed to treat underground ore and to produce copper concentrate with provision of space in the plant site for a molybdenum plant in the future.
Qualified persons
The information in this report relating to Mineral Resource and Mineral Reserve on AngloGold Ashanti’s material properties is based on information compiled by, or under the supervision of, Qualified Persons, as defined in Regulation S-K 1300.
All Qualified Persons, unless otherwise stated, were employed by AngloGold Ashanti at the time of preparing the Technical Report Summaries in respect of AngloGold Ashanti’s material properties which are filed as exhibits to the Company’s annual report on Form 20-F for the financial year ended 31 December 2025. However, the Qualified Persons who provided the information for the Technical Report Summary (current at 31 December 2025) in respect of Kibali, Richard Peattie and Derek Holm are employed by Barrick. Both Richard Peattie and Derek Holm have consented to the inclusion of the Mineral Resource and Mineral Reserve in respect of Kibali included in this report.
AngloGold Ashanti has internal controls for documenting the information supporting the Mineral Resource and Mineral Reserve estimates, describing the methods used and ensuring the validity of the estimates. Information that is utilised to compile the Mineral Resource and Mineral Reserve in the Company’s annual report on Form 20-F for the financial year ended 31 December 2025 is prepared and reviewed by the relevant Qualified Persons at each property.
All Qualified Persons have sufficient experience relevant to the style of mineralisation and the type of deposit under consideration, and relevant to the activity which they are undertaking. AngloGold Ashanti has recognised that in preparing the information with respect to Kibali, the Mineral Resource and Mineral Reserve were prepared through the Kibali joint venture’s estimation and governance processes and under the supervision of Barrick’s Qualified Persons. The legal tenure of each material property has been verified to the satisfaction of the accountable Qualified Person and all of the Mineral Reserve has been confirmed to be covered by the required mining permits or there exists a realistic expectation that these permits will be issued. The Qualified Persons have provided consent to the inclusion of the Mineral Resource and Mineral Reserve information in this report in the form and context in which it appears.
The Company has a tiered internal review process whereby the Mineral Resource and Mineral Reserve is reviewed by the Qualified Persons at a regional level, before review at the corporate level prior to publication.
Accordingly, the Chairperson of the RRLT, Tarryn Flitton, Vice President Resource and Reserve, Master of Engineering (Mining), Bachelor of Science (Honours, Geology), SME RM, Pr.Sci.Nat (SACNASP), FGSSA, assumes responsibility for the Mineral Resource and Mineral Reserve processes for AngloGold Ashanti. Tarryn Flitton has 24 years’ experience in mining with 13 years directly leading and managing Mineral Resource and Mineral Reserve reporting. She is employed full-time by AngloGold Ashanti and can be contacted at the following address: 6363 S. Fiddlers Green Circle, Suite 1000, Greenwood Village, CO 80111, United States. Tarryn Flitton consents to the inclusion of the Mineral Resource and Mineral Reserve information in this report, in the form and context in which it appears in the narrative disclosure.
Qualified Persons in respect of the material properties
| Responsibility | Qualified Person | Professional organisation | Membership number | Relevant experience | Qualification |
|---|---|---|---|---|---|
| Kibali Mineral Resource and Mineral Reserve | Richard Peattie (1) | FAusIMM | 301029 | 29 years | MPhil (Geostatistics) |
| Kibali Mineral Reserve | Derek Holm (1) | FAusIMM | 3138099 | 25 years | BSc Hons (Mining Engineering) |
| Obuasi Mineral Resource | Eric Kofi Owusu Acheampong | MAusIMM (CP) | 220644 | 28 years | MSc (Mineral Resource Evaluation), BSc (Geological Engineering) |
| Obuasi Mineral Reserve | Douglas Atanga | SME RM | 5282632 | 17 years | BSc (Mining Engineering) |
| Geita Mineral Resource | Janeth Luponelo | SME RM | 5345424 | 25 years | MEng (Mining Engineering), Bachelor in Mineral Sciences |
| Geita Mineral Reserve | Duan Campbell | Pr. Eng | 202101953 | 23 years | BEng (Mining) |
| Sukari Mineral Resource | Doxel Mutunda | MAIG | 8063 | 12 years | BSc (Geological Engineering, Exploration and Mining) |
| Sukari Mineral Reserve (underground) | Mahmoud Abdelmonem | MIMMM QMR | 703310 | 8 years | BSc (Mining Engineering) |
| Sukari Mineral Reserve (open pit) | Sherif Moemen | MAusIMM (CP) | 3152447 | 6 years | BSc (Mining Engineering) |
| Arthur Gold Project Mineral Resource | Geoffrey Gushée | FAusIMM | 207957 | 37 years | MEng (Mineral Resource Management) |
| Arthur Gold Project Mineral Reserve | Hamid Taghavi | SME RM | 4184627 | 23 years | BEng (Mining Engineering) |
Notes:
All Qualified Persons, unless otherwise stated, were employed by AngloGold Ashanti at the time of preparing the Technical Report Summaries in respect of AngloGold Ashanti’s material properties.
(1)The Qualified Persons who provided the information for the Technical Report Summary (report current at 31 December 2025) in respect of the Kibali Mineral Resource and Mineral Reserve are employed by Barrick. Barrick is the operator of the Kibali joint venture.