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John Fraser MacKenzie
Chairman at
CAPSTONE COPPER CORP.
Net worth: 109 M $ as of 2026-05-30
Profile
John Fraser MacKenzie is the founder of Mantos Copper SA, established in 1955, where the title held is Chief Executive Officer & Director.
Current jobs include Chairman at Gold Fields Ltd. starting in 2026, Chairman at Capstone Copper Corp.
starting in 2025, and Director at Mantoverde SA (Chile).
Former jobs include Chief Executive Officer-Copper at Anglo American Plc from 2009 to 2013, Independent Non-Executive Director at KAZ Minerals Ltd., and Independent Non-Executive Director at Horizonte Minerals Plc from 2023 to 2024.
Education history includes undergraduate and graduate degrees from the University of the Witwatersrand conferred in 1989 and 1993 respectively, and a graduate degree from the University of South Africa conferred in 2000.
Known holdings in public companies
| Company | Date | Number of shares | Valuation | Valuation date |
|---|---|---|---|---|
| 2026-05-11 | 10,000,040 ( 1.31% ) | 109 M $ | 2026-05-30 | |
| 2026-06-22 | 500 ( 0% ) | 19 804 $ | 2026-05-30 |
John Fraser MacKenzie active positions
| Companies | Position | Start |
|---|---|---|
| CAPSTONE COPPER CORP. | Chairman | 2025-05-01 |
| GOLD FIELDS LIMITED | Chairman | 2026-05-24 |
Mantos Copper SA
 Mantos Copper SA Other Metals/MineralsNon-Energy Minerals Engages in mining, extracting and sale of copper | Founder | 1954-12-31 |
Mantoverde | Director/Board Member | - |
Former positions of John Fraser MacKenzie
| Companies | Position | End |
|---|---|---|
| HORIZONTE MINERALS PLC | Director/Board Member | 2024-08-04 |
| ANGLO AMERICAN PLC | Corporate Officer/Principal | 2012-12-31 |
| KAZ MINERALS | Director/Board Member | - |
Training of John Fraser MacKenzie
Experiences
Positions held
Active
Inactive
Listed companies
Private companies
Connections
77
1st degree connections
9
1st degree companies
Male
Female
Members of the board
Executives
Linked companies
| Private companies | 9 |
|---|---|
Anglo American Plc
 Anglo American Plc Other Metals/MineralsNon-Energy Minerals Explores and mines precious base & ferrous metals | Non-Energy Minerals |
KAZ Minerals Ltd.
 KAZ Minerals Ltd. Other Metals/MineralsNon-Energy Minerals Engages in copper mining | Non-Energy Minerals |
Horizonte Minerals Plc
 Horizonte Minerals Plc Other Metals/MineralsNon-Energy Minerals Engages in exploration and development of nickel-cobalt metals | Non-Energy Minerals |
Gold Fields Ltd.
 Gold Fields Ltd. Precious MetalsNon-Energy Minerals Provides gold and copper exploration and mining services | Non-Energy Minerals |
University of the Witwatersrand
 University of the Witwatersrand Other Consumer ServicesConsumer Services Functions as a College/University | Consumer Services |
University of South Africa
 University of South Africa Other Consumer ServicesConsumer Services Functions as a College/University | Consumer Services |
Mantos Copper SA
Mantos Copper SA Other Metals/MineralsNon-Energy Minerals Engages in mining, extracting and sale of copper | Non-Energy Minerals |
Mantoverde | |
Capstone Copper Corp.
 Capstone Copper Corp. Other Metals/MineralsNon-Energy Minerals Provides copper, gold, silver and molybdenum mining services | Non-Energy Minerals |
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